[Title 46 CFR ]
[Code of Federal Regulations (annual edition) - October 1, 2017 Edition]
[From the U.S. Government Publishing Office]



[[Page i]]

          

          Title 46

Shipping


________________________

Parts 140 to 155

                         Revised as of October 1, 2017

          Containing a codification of documents of general 
          applicability and future effect

          As of October 1, 2017
                    Published by the Office of the Federal Register 
                    National Archives and Records Administration as a 
                    Special Edition of the Federal Register

[[Page ii]]

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[[Page iii]]




                            Table of Contents



                                                                    Page
  Explanation.................................................       v

  Title 46:
          Chapter I--Coast Guard, Department of Homeland 
          Security (Continued)                                       3
  Finding Aids:
      Table of CFR Titles and Chapters........................     349
      Alphabetical List of Agencies Appearing in the CFR......     369
      List of CFR Sections Affected...........................     379

[[Page iv]]


      


                     ----------------------------

                     Cite this Code:  CFR
                     To cite the regulations in 
                       this volume use title, 
                       part and section number. 
                       Thus, 46 CFR 140.100 
                       refers to title 46, part 
                       140, section 100.

                     ----------------------------

[[Page v]]



                               EXPLANATION

    The Code of Federal Regulations is a codification of the general and 
permanent rules published in the Federal Register by the Executive 
departments and agencies of the Federal Government. The Code is divided 
into 50 titles which represent broad areas subject to Federal 
regulation. Each title is divided into chapters which usually bear the 
name of the issuing agency. Each chapter is further subdivided into 
parts covering specific regulatory areas.
    Each volume of the Code is revised at least once each calendar year 
and issued on a quarterly basis approximately as follows:

Title 1 through Title 16.................................as of January 1
Title 17 through Title 27..................................as of April 1
Title 28 through Title 41...................................as of July 1
Title 42 through Title 50................................as of October 1

    The appropriate revision date is printed on the cover of each 
volume.

LEGAL STATUS

    The contents of the Federal Register are required to be judicially 
noticed (44 U.S.C. 1507). The Code of Federal Regulations is prima facie 
evidence of the text of the original documents (44 U.S.C. 1510).

HOW TO USE THE CODE OF FEDERAL REGULATIONS

    The Code of Federal Regulations is kept up to date by the individual 
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    To determine whether a Code volume has been amended since its 
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OMB CONTROL NUMBERS

    The Paperwork Reduction Act of 1980 (Pub. L. 96-511) requires 
Federal agencies to display an OMB control number with their information 
collection request.

[[Page vi]]

Many agencies have begun publishing numerous OMB control numbers as 
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PAST PROVISIONS OF THE CODE

    Provisions of the Code that are no longer in force and effect as of 
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This material, like any other properly issued regulation, has the force 
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[[Page vii]]

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    Oliver A. Potts,
    Director,
    Office of the Federal Register.
    October 1, 2017.

                                
                                      
                            

  

[[Page ix]]



                               THIS TITLE

    Title 46--Shipping is composed of nine volumes. The parts in these 
volumes are arranged in the following order: Parts 1-40, 41-69, 70-89, 
90-139, 140-155, 156-165, 166-199, 200-499, and 500 to end. The first 
seven volumes containing parts 1-199 comprise chapter I--Coast Guard, 
DHS. The eighth volume, containing parts 200--499, includes chapter II--
Maritime Administration, DOT and chapter III--Coast Guard (Great Lakes 
Pilotage), DHS. The ninth volume, containing part 500 to end, includes 
chapter IV--Federal Maritime Commission. The contents of these volumes 
represent all current regulations codified under this title of the CFR 
as of October 1, 2017.

    For this volume, Bonnie Fritts was Chief Editor. The Code of Federal 
Regulations publication program is under the direction of John Hyrum 
Martinez, assisted by Stephen J. Frattini.

[[Page 1]]



                           TITLE 46--SHIPPING




                  (This book contains parts 140 to 155)

  --------------------------------------------------------------------
                                                                    Part

chapter i--Coast Guard, Department of Homeland Security 
  (Continued)...............................................         140

[[Page 3]]



   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)




  --------------------------------------------------------------------

                      SUBCHAPTER M--TOWING VESSELS
Part                                                                Page
140             Operations..................................           5
141             Lifesaving..................................          17
142             Fire protection.............................          23
143             Machinery and electrical systems and 
                    equipment...............................          30
144             Construction and arrangement................          42
                     SUBCHAPTER N--DANGEROUS CARGOES
145-146

[Reserved]

147             Hazardous ships' stores.....................          51
147A            Interim regulations for shipboard fumigation          58
148             Carriage of bulk solid materials that 
                    require special handling................          62
149

[Reserved]

              SUBCHAPTER O--CERTAIN BULK DANGEROUS CARGOES
150             Compatibility of cargoes....................          92
151             Barges carrying bulk liquid hazardous 
                    material cargoes........................         143
152

[Reserved]

153             Ships carrying bulk liquid, liquefied gas, 
                    or compressed gas hazardous materials...         210
154             Safety standards for self-propelled vessels 
                    carrying bulk liquefied gases...........         284
155

[Reserved]

               SUBCHAPTER P--MANNING OF VESSELS [RESERVED]

[[Page 5]]



                       SUBCHAPTER M_TOWING VESSELS





PART 140_OPERATIONS--Table of Contents



                            Subpart A_General

Sec.
140.100  Purpose.
140.105  Applicability and delayed implementation for existing vessels.

                  Subpart B_General Operational Safety

140.205  General vessel operation.
140.210  Responsibilities of the master and crew.

Subpart C [Reserved]

                          Subpart D_Crew Safety

140.400  Personnel records.
140.405  Emergency duties and duty stations.
140.410  Safety orientation.
140.415  Orientation for individuals that are not crewmembers.
140.420  Emergency drills and instruction.
140.425  Fall overboard prevention.
140.430  Wearing of work vests.
140.435  First aid equipment.

                       Subpart E_Safety and Health

140.500  General.
140.505  General health and safety requirements.
140.510  Identification and mitigation of health and safety hazards.
140.515  Training requirements.

                   Subpart F_Vessel Operational Safety

140.600  Applicability.
140.605  Vessel stability.
140.610  Hatches and other openings.
140.615  Examinations and tests.
140.620  Navigational safety equipment.
140.625  Navigation underway.
140.630  Lookout.
140.635  Navigation assessment.
140.640  Pilothouse resource management.
140.645  Navigation safety training.
140.650  Operational readiness of lifesaving and fire suppression and 
          detection equipment.
140.655  Prevention of oil and garbage pollution.
140.660  Vessel security.
140.665  Inspection and testing required when making alterations, 
          repairs, or other such operations involving riveting, welding, 
          burning, or like fire-producing actions.
140.670  Use of auto pilot.

            Subpart G_Navigation and Communication Equipment

140.700  Applicability.
140.705  Charts and nautical publications.
140.710  Marine radar.
140.715  Communications equipment.
140.720  Navigation lights, shapes, and sound signals.
140.725  Additional navigation equipment.

                         Subpart H_Towing Safety

140.800  Applicability.
140.801  Towing gear.
140.805  Towing safety.
140.820  Recordkeeping for towing gear.

                        Subpart I_Vessel Records

140.900  Marine casualty reporting.
140.905  Official logbooks.
140.910  Towing vessel record or record specified by TSMS.
140.915  Items to be recorded.

                           Subpart J_Penalties

140.1000  Statutory penalties.
140.1005  Suspension and revocation.

    Authority: 46 U.S.C. 3103, 3301, 3306, 3308, 3316, 8104, 8904; 33 
CFR 1.05; DHS Delegation 0170.1.

    Source: USCG-2006-24412, 81 FR 40101, June 20, 2016, unless 
otherwise noted.



                            Subpart A_General



Sec. 140.100  Purpose.

    This part contains the health, safety, and operational requirements 
for towing vessels and the crewmembers serving onboard them.



Sec. 140.105  Applicability and delayed implementation for existing vessels.

    This part applies to all towing vessels subject to this subchapter.
    (a) With the exception Sec. 140.500, which has a later 
implementation date, an existing towing vessel must comply with the 
requirements in this part no later than either July 20, 2018 or the date 
the vessel obtains a Certificate of Inspection (COI), whichever date is 
earlier.
    (b) The delayed implementation provisions in paragraph (a) of this 
section do not apply to a new towing vessel.

[[Page 6]]



                  Subpart B_General Operational Safety



Sec. 140.205  General vessel operation.

    (a) A vessel must be operated in accordance with applicable laws and 
regulations and in such a manner as to afford protection against hazards 
to life, property, and the environment.
    (b) Towing vessels with a Towing Safety Management System (TSMS) 
must be operated in accordance with the TSMS applicable to the vessel.
    (c) Vessels must be manned in accordance with the COI. Manning 
requirements are contained in part 15 of this chapter.
    (d) Each crewmember that is required to hold a Merchant Mariner 
Credential (MMC) must have the credential on board and available for 
examination at all times when the vessel is operating.
    (e) All individuals who are not required to hold an MMC permitted 
onboard the vessel must have and present on request a valid personal 
identification that meets the requirements set forth in 33 CFR 101.515.



Sec. 140.210  Responsibilities of the master and crew.

    (a) The safety of the towing vessel is the responsibility of the 
master and includes:
    (1) Adherence to the provisions of the COI;
    (2) Compliance with the applicable provisions of this subchapter;
    (3) Compliance with the TSMS, if one is applicable to the vessel; 
and
    (4) Supervision of all persons onboard in carrying out their 
assigned duties.
    (b) If the master or officer in charge of a navigational watch 
believes it is unsafe for the vessel to proceed, that an operation 
endangers the vessel or crew, or that an unsafe condition exists, he or 
she must ensure that adequate corrective action is taken and must not 
proceed until it is safe to do so.
    (c) Nothing in this subpart may be construed in a manner which 
limits the master or officer in charge of a navigational watch, at his 
or her own responsibility, from diverting from the route prescribed in 
the COI or taking such steps as deemed necessary and prudent to assist 
vessels in distress or for other emergency conditions.
    (d) It is the responsibility of the crew to:
    (1) Adhere to the provisions of the COI;
    (2) Comply with the applicable provisions of this subchapter;
    (3) Comply with the TSMS, if one is applicable to the vessel;
    (4) Ensure that the master or officer in charge of a navigational 
watch is made aware of all known aspects of the condition of the vessel, 
including:
    (i) Those vessels being pushed, pulled, or hauled alongside; and
    (ii) Equipment and other accessories used for pushing, pulling, or 
hauling alongside other vessels.
    (5) Minimize any distraction from the operation of the vessel or 
performance of duty; and
    (6) Report unsafe conditions to the master or officer in charge of a 
navigational watch and take effective action to prevent accidents.

Subpart C [Reserved]



                          Subpart D_Crew Safety



Sec. 140.400  Personnel records.

    (a) The master of each towing vessel must keep an accurate list of 
crewmembers and their assigned positions and responsibilities aboard the 
vessel.
    (b) The master must keep an accurate list of individuals to be 
carried as persons in addition to the crew and any passengers.
    (c) The date and time that a navigation watchstander, including 
master, officer in charge of a navigational watch, and lookout assumes a 
watch and is relieved of a watch must be recorded in the towing vessel 
record (TVR), official logbook, or in accordance with the TSMS 
applicable to the vessel. If an engineering watch is maintained, 
comparable records documenting the engineering watch are required.



Sec. 140.405  Emergency duties and duty stations.

    (a) Crewmembers must meet the requirements in Secs. 15.405 and 
15.1105 of this chapter, as appropriate.

[[Page 7]]

    (b) Any towing vessel with alternating watches (shift work) or 
overnight accommodations must identify the duties and duty stations of 
each person onboard during an emergency, including:
    (1) Responding to fires and flooding;
    (2) Responding to emergencies that necessitate abandoning the 
vessel;
    (3) Launching survival craft;
    (4) Taking action during heavy weather;
    (5) Taking action in the event of a person overboard;
    (6) Taking action relative to the tow;
    (7) Taking action in the event of failure of propulsion, steering, 
or control system;
    (8) Managing individuals onboard who are not crewmembers;
    (9) Managing any other event or condition which poses a threat to 
life, property, or the environment; and
    (10) Responding to other special duties essential to addressing 
emergencies as determined by the TSMS applicable to the vessel, if a 
TSMS is used.
    (c) The emergency duties and duty stations required by this section 
must be posted at each operating station and in a conspicuous location 
in a space commonly visited by crewmembers. If posting is impractical, 
such as in an open boat, they may be kept onboard in a location readily 
available to the crew.



Sec. 140.410  Safety orientation.

    (a) Personnel must meet the requirements in Secs. 15.405 and 15.1105 
of this chapter, as appropriate.
    (b) Prior to getting underway for the first time on a particular 
towing vessel, each crewmember must receive a safety orientation on:
    (1) His or her duties in an emergency;
    (2) The location, operation, and use of lifesaving equipment;
    (3) Prevention of falls overboard;
    (4) Personal safety measures;
    (5) The location, operation, and use of Personal Protective 
Equipment;
    (6) Emergency egress procedures;
    (7) The use and operation of watertight and weathertight closures;
    (8) Responsibilities to provide assistance to individuals that are 
not crewmembers;
    (9) How to respond to emergencies relative to the tow; and
    (10) Awareness of, and expected response to, any other hazards 
inherent to the operation of the towing vessel which may pose a threat 
to life, property, or the environment.
    (c) The safety orientation provided to crewmembers who received a 
safety orientation on another vessel may be modified to cover only those 
areas unique to the other vessel on which service will occur.
    (d) Safety orientations and other crew training must be documented 
in the TVR, official logbook, or in accordance with the TSMS applicable 
to the vessel. The entry must include:
    (1) The date of the safety orientation or training;
    (2) A general description of the safety orientation or training 
topics;
    (3) The name(s) and signature(s) of individual(s) providing the 
orientation or training; and
    (4) The name(s) of the individual(s) receiving the safety 
orientation or training.



Sec. 140.415  Orientation for individuals that are not crewmembers.

    Individuals, who are not crewmembers, on board a towing vessel must 
receive a safety orientation prior to getting underway or as soon as 
practicable thereafter, to include:
    (a) The location, operation, and use of lifesaving equipment;
    (b) Emergency procedures;
    (c) Methods to notify crewmembers in the event of an emergency; and
    (d) Prevention of falls overboard.



Sec. 140.420  Emergency drills and instruction.

    (a) Master's responsibilities. The master of a towing vessel must 
ensure that drills are conducted and instructions are given to ensure 
that all crewmembers are capable of performing the duties expected of 
them during emergencies. This includes abandoning the vessel, recovering 
persons from the water, responding to onboard fires and flooding, or 
responding to other threats to life, property, or the environment.
    (b) Nature of drills. Each drill must, as far as practicable, be 
conducted as if there was an actual emergency.

[[Page 8]]

    (c) Annual instruction for each crew member. Unless otherwise 
stated, each crewmember must receive the instruction required by this 
section annually.
    (d) Instructions and drills required. The following instruction and 
drills are required:
    (1) Response to fires, as required by Sec. 142.245 of this 
subchapter;
    (2) Launching of a skiff, if listed as an item of emergency 
equipment to abandon ship or recover a person-overboard;
    (3) Instruction on the use of davit-launched liferafts, if 
installed.
    (4) If a rescue boat is installed, instruction on how it must be 
launched, with its assigned crew aboard, and maneuvered in the water as 
if during an actual man-overboard situation.
    (5) Credentialed mariners holding an officer endorsement do not 
require instruction in accordance with paragraphs (d)(1), (3), and (4) 
of this section.
    (e) Alternative forms of instruction. (1) Instruction as required by 
this section may be conducted via an electronic format followed by a 
discussion and demonstration by a competent individual. This instruction 
may occur either on board or off the vessel but must include the 
equipment that is the subject of the instruction.
    (2) Instruction as required by this section may be performed in 
accordance with the TSMS applicable to the vessel, provided that it 
meets the minimum requirements of this section.
    (f) Location of drills, full crew participation, and use of 
equipment. As far as practicable, drills must take place on board the 
vessel. They must include:
    (1) Participation by all crewmembers; and
    (2) Actual use of, or realistic simulation of the use of, emergency 
equipment.
    (g) Recordkeeping. Records of drills and instruction must be 
maintained in the TVR, official logbook, or in accordance with the TSMS 
applicable to the vessel. The record must include:
    (1) The date of the drill and instruction;
    (2) A description of the drill scenario and instruction topics;
    (3) The personnel involved.



Sec. 140.425  Fall overboard prevention.

    (a) The owner or managing operator of a towing vessel must establish 
procedures to address fall overboard prevention and recovery of persons 
in the water, including, but not limited to:
    (1) Personal protective equipment;
    (2) Safely working on the tow;
    (3) Safety while line handling;
    (4) Safely moving between the vessel and a tow, pier, structure, or 
other vessel; and
    (5) Use of retrieval equipment.
    (b) The owner, managing operator, or master must ensure that all 
persons on board comply with the policies and procedures in this 
section.



Sec. 140.430  Wearing of work vests.

    (a) Personnel dispatched from the vessel or that are working in an 
area on the exterior of the vessel without rails and guards must wear a 
lifejacket meeting requirements in 46 CFR 141.340, an immersion suit 
meeting requirements in 46 CFR 141.350, or a work vest approved by the 
Commandant under 46 CFR subpart 160.053. When worn at night, the work 
vest must be equipped with a light that meets the requirements of 46 CFR 
141.340(g)(1). Work vests may not be substituted for the lifejackets 
required by 46 CFR part 141.
    (b) Each storage container containing a work vest must be marked 
``WORK VEST''.



Sec. 140.435  First aid equipment.

    Each towing vessel must be equipped with an industrial type first 
aid cabinet or kit, appropriate to the size of the crew and operating 
conditions. Each towing vessel operating on oceans, coastwise, or Great 
Lakes routes must have a means to take blood pressure readings, splint 
broken bones, and apply large bandages for serious wounds.



                       Subpart E_Safety and Health



Sec. 140.500  General.

    (a) No later than July 22, 2019, the owner or managing operator must 
implement a health and safety plan. The health and safety plan must 
document

[[Page 9]]

compliance with this part and include recordkeeping procedures.
    (b) The owner, managing operator, or master must ensure that all 
persons on board a towing vessel comply with the health and safety plan.



Sec. 140.505  General health and safety requirements.

    (a) The owner or managing operator must implement procedures for 
reporting unsafe conditions and must have records of the activities 
conducted under this section. The owner or managing operator must 
maintain records of health and safety incidents that occur on board the 
vessel, including any medical records associated with the incidents. 
Upon request, the owner or managing operator must provide crewmembers 
with incident reports and the crewmember's own associated medical 
records.
    (b) All vessel equipment must be used in accordance with the 
manufacturer's recommended practice and in a manner that minimizes risk 
of injury or death. This includes machinery, deck machinery, towing 
gear, ladders, embarkation devices, cranes, portable tools, and safety 
equipment.
    (c) All machinery and equipment that is not in proper working order 
(including missing or malfunctioning guards or safety devices) must be 
removed; made safe through marking, tagging, or covering; or otherwise 
made unusable.
    (d) Personal Protective Equipment (PPE). (1) Appropriate Personal 
Protective Equipment (PPE) must be made available and on hand for all 
personnel engaged in an activity that requires the use of PPE.
    (2) PPE must be suitable for the vessel's intended service; meet the 
standards of 29 CFR part 1910, subpart I; and be used, cleaned, 
maintained, and repaired in accordance with manufacturer's requirements.
    (3) All individuals must wear PPE appropriate to the activity being 
performed;
    (4) All personnel engaged in an activity must be trained in the 
proper use, limitations, and care of the PPE specified by this subpart;
    (e) The vessel, including crew's quarters and the galley, must be 
kept in a sanitary condition.



Sec. 140.510  Identification and mitigation of health and safety hazards.

    (a) The owner or managing operator must implement procedures to 
identify and mitigate health and safety hazards, including but not 
limited to:
    (1) Tools and equipment, including deck machinery, rigging, welding 
and cutting, hand tools, ladders, and abrasive wheel machinery found on 
board the vessel;
    (2) Slips, trips, and falls;
    (3) Working aloft;
    (4) Hazardous materials;
    (5) Confined space entry;
    (6) Blood-borne pathogens and other biological hazards;
    (7) Electrical;
    (8) Noise;
    (9) Falls overboard;
    (10) Vessel embarkation and disembarkation (including pilot 
transfers);
    (11) Towing gear, including winches, capstans, wires, hawsers and 
other related equipment;
    (12) Personal hygiene;
    (13) Sanitation and safe food handling; and
    (14) Potable water supply.
    (b) As far as practicable, the owner or managing operator must 
implement other types of safety control measures before relying on 
Personal Protective Equipment. These controls may include 
administrative, engineering, source modification, substitution, process 
change or controls, isolation, ventilation, or other controls.



Sec. 140.515  Training requirements.

    (a) All crewmembers must be provided with health and safety 
information and training that includes:
    (1) Content and procedures of the owner or managing operator's 
health and safety plan;
    (2) Procedures for reporting unsafe conditions;
    (3) Proper selection and use of PPE appropriate to the vessel 
operation;
    (4) Safe use of equipment including deck machinery, rigging, welding 
and cutting, hand tools, ladders, and abrasive wheel machinery found 
onboard the vessel;

[[Page 10]]

    (5) Hazard communication and cargo knowledge;
    (6) Safe use and storage of hazardous materials and chemicals;
    (7) Confined space entry;
    (8) Respiratory protection; and
    (9) Lockout/Tagout procedures.
    (b) Individuals, other than crewmembers, must be provided with 
sufficient information or training on hazards relevant to their 
potential exposure on or around the vessel.
    (c) Crewmember training required by this section must be conducted 
as soon as practicable, but not later than 5 days after employment.
    (d) Refresher training must be repeated annually and may be 
conducted over time in modules covering specific topics. Refresher 
training may be less comprehensive, provided that the information 
presented is sufficient to provide employees with continued 
understanding of workplace hazards. The refresher training of persons 
subject to this subpart must include the information and training 
prescribed in this section.
    (e) The owner, managing operator, or master must determine the 
appropriate training and information to provide to each individual 
permitted on the vessel who is not a crewmember, relative to the 
expected risk exposure of the individual.
    (f) All training required in this section must be documented in 
owner or managing operator's records.



                   Subpart F_Vessel Operational Safety



Sec. 140.600  Applicability.

    This subpart applies to all towing vessels unless otherwise 
specified. Certain vessels remain subject to the navigation safety 
regulations in 33 CFR part 164.



Sec. 140.605  Vessel stability.

    (a) Prior to getting underway, and at all other times necessary to 
ensure the safety of the vessel, the master or officer in charge of a 
navigational watch must determine whether the vessel complies with all 
stability requirements in the vessel's trim and stability book, 
stability letter, COI, and Load Line Certificate, as applicable.
    (b) A towing vessel must be maintained and operated so the 
watertight integrity and stability of the vessel are not compromised.



Sec. 140.610  Hatches and other openings.

    (a) All towing vessels must be operated in a manner that minimizes 
the risk of down-flooding and progressive flooding.
    (b) The master must ensure that all hatches, doors, and other 
openings designed to be watertight or weather-tight function properly.
    (c) The master or officer in charge of a navigational watch must 
ensure all hatches and openings of the hull and deck are kept tightly 
closed except:
    (1) When access is needed through the opening for transit;
    (2) When operating on rivers with a tow, if the master determines 
the safety of the vessel is not compromised; or
    (3) When operating on lakes, bays, and sounds, without a tow during 
calm weather, and only if the master determines that the safety of the 
vessel is not compromised.
    (d) Where installed, all watertight doors in watertight bulkheads 
must be closed during the operation of the vessel, unless they are being 
used for transit between compartments; and
    (e) When downstreaming, all exterior openings at the main deck level 
must be closed.
    (f) Decks and bulkheads designed to be watertight or weathertight 
must be maintained in that condition.



Sec. 140.615  Examinations and tests.

    (a) This section applies to a towing vessel not subject to 33 CFR 
164.80.
    (b) Prior to getting underway, the master or officer in charge of a 
navigational watch of the vessel must examine and test the steering 
gear, signaling whistle, propulsion control, towing gear, navigation 
lights, navigation equipment, and communication systems of the vessel. 
This examination and testing does not need to be conducted more than 
once in any 24-hour period.
    (c) The results of the examination and testing must be recorded in 
the TVR, official logbook, or in accordance with the TSMS applicable to 
the vessel.

[[Page 11]]



Sec. 140.620  Navigational safety equipment.

    (a) This section applies to a towing vessel not subject to the 
requirements of 33 CFR 164.82.
    (b) The owner, managing operator, or master of each towing vessel 
must maintain the required navigational-safety equipment in a fully-
functioning, operational condition.
    (c) Navigational safety equipment such as radar, gyrocompass, echo 
depth-sounding or other sounding device, automatic dependent 
surveillance equipment, or navigational lighting that fails during a 
voyage must be repaired at the earliest practicable time. The owner, 
managing operator, or master must consider the state of the equipment 
(along with such factors as weather, visibility, traffic, and the 
dictates of good seamanship) when deciding whether it is safe for the 
vessel to proceed.
    (d) The failure and subsequent repair or replacement of navigational 
safety equipment must be recorded. The record must be made in the TVR, 
official logbook, or in accordance with the TSMS applicable to the 
vessel.



Sec. 140.625  Navigation underway.

    (a) At all times, the movement of a towing vessel and its tow must 
be under the direction and control of a master or mate (pilot) properly 
licensed under subchapter B of this chapter.
    (b) The master or officer in charge of a navigational watch must 
operate the vessel in accordance with the conditions and restrictions 
stated on the COI and the TSMS applicable to the vessel.
    Note to Sec. 140.625. Certain towing vessels subject to Sec. 140.625 
are also subject to the requirements of 33 CFR 164.78.



Sec. 140.630  Lookout.

    (a) Throughout the trip or voyage the master and officer in charge 
of the navigational watch must assess the requirement for a lookout, 
consistent with 33 CFR 83.05. A lookout in addition to the master or 
mate (pilot) should be added when necessary to:
    (1) Maintain a state of vigilance with regard to any significant 
change in the operational environment;
    (2) Assess the situation and the risk of collision/allision;
    (3) Anticipate stranding and other dangers to navigation; and
    (4) Detect any other potential hazards to safe navigation.
    (b) In determining the requirement for a lookout, the officer in 
charge of the navigational watch must take full account of relevant 
factors including, but not limited to: state of weather, visibility, 
traffic density, proximity of dangers to navigation, and the attention 
necessary when navigating in areas of increased vessel traffic.



Sec. 140.635  Navigation assessment.

    (a) The officer in charge of a navigational watch must conduct a 
navigation assessment for the intended route and operations prior to 
getting underway. The navigation assessment must incorporate the 
requirements of pilothouse resource management of Sec. 140.640, assess 
operational risks, and anticipate and manage workload demands. At a 
minimum, this assessment must consider:
    (1) The velocity and direction of currents in the area being 
transited;
    (2) Water depth, river stage, and tidal state along the route and at 
mooring location;
    (3) Prevailing visibility and weather conditions and changes 
anticipated along the intended route;
    (4) Density (actual and anticipated) of marine traffic;
    (5) The operational status of pilothouse instrumentation and 
controls, to include alarms, communication systems, variation and 
deviation errors of the compass, and any known nonconformities or 
deficiencies;
    (6) Air draft relative to bridges and overhead obstructions taking 
tide and river stage into consideration;
    (7) Horizontal clearance, to include bridge transits;
    (8) Lock transits;
    (9) Navigation hazards such as logs, wrecks or other obstructions in 
the water;
    (10) Any broadcast notice to mariners, safety or security zones or 
special navigation areas;

[[Page 12]]

    (11) Configuration of the vessel and tow, including handling 
characteristics, field of vision from the pilothouse, and activities 
taking place onboard;
    (12) The knowledge, qualifications, and limitations of crewmembers 
who are assigned as members on watch and the experience and familiarity 
of crewmembers with the towing vessels particulars and equipment; and
    (13) Any special conditions not covered above that impact the safety 
of navigation.
    (b) The officer in charge of a navigational watch must keep the 
navigation assessment up-to-date to reflect changes in conditions and 
circumstances. This includes updates during the voyage or trip as 
necessary. At each change of the navigational watch, the oncoming 
officer in charge of the navigational watch must review the current 
navigation assessment for necessary changes.
    (c) The officer in charge of a navigational watch must ensure that 
the navigation assessment and any updates are communicated to other 
members of the navigational watch.
    (d) A navigation assessment entry must be recorded in the TVR, 
official log, or in accordance with the TSMS applicable to the vessel. 
The entry must include the date and time of the assessment, the name of 
the individual making the assessment, and the starting and ending points 
of the voyage or trip that the assessment covers.
    Note to Sec. 140.635. Certain towing vessels subject to Sec. 140.635 
are also subject to the voyage planning requirements of 33 CFR 164.80.



Sec. 140.640  Pilothouse resource management.

    (a) The officer in charge of a navigational watch must:
    (1) Ensure that other members of the navigational watch have a 
working knowledge of the navigation assessment required by Sec. 140.635, 
and understand the chain of command, the decision-making process, and 
the fact that information sharing is critical to the safety of the 
vessel.
    (2) Ensure that the navigation assessment required by Sec. 140.635 
is complete, updated, communicated and available throughout the trip.
    (3) Ensure that watch change procedures incorporate all items listed 
in paragraph (a)(1) of this section.
    (4) Take actions (to include delaying watch change or pausing the 
voyage) if there is reasonable cause to believe that an oncoming 
watchstander is not immediately capable of carrying out his or her 
duties effectively.
    (5) Maintain situational awareness and minimize distractions.
    (b) Prior to assuming duties as officer in charge of a navigational 
watch, a person must:
    (1) Complete the navigation assessment required by Sec. 140.635;
    (2) Verify the operational condition of the towing vessel; and
    (3) Verify that there are adequate personnel available to assume the 
watch.
    (c) If at any time the officer in charge of a navigational watch is 
to be relieved when a maneuver or other action to avoid any hazard is 
taking place, the relief of that officer in charge of a navigational 
watch must be deferred until such action has been completed.



Sec. 140.645  Navigation safety training.

    (a) Prior to assuming duties related to the safe operation of a 
towing vessel, each crewmember must receive training to ensure that they 
are familiar with:
    (1) Watchstanding terms and definitions;
    (2) Duties of a lookout;
    (3) Communication with other watchstanders;
    (4) Change of watch procedures;
    (5) Procedures for reporting other vessels or objects; and
    (6) Watchstanding safety.
    (b) Crewmember training must be recorded in the TVR, official 
logbook, or in accordance with the TSMS applicable to the vessel.
    (c) Credentialed mariners holding Able Seaman or officer 
endorsements will be deemed to have met the training requirements in 
this section.



Sec. 140.650  Operational readiness of lifesaving and fire suppression
and detection equipment.

    The owner, managing operator, or master of a towing vessel must 
ensure

[[Page 13]]

that the vessel's lifesaving and fire suppression and detection 
equipment complies with the applicable requirements of parts 141 and 142 
of this subchapter and is in good working order.



Sec. 140.655  Prevention of oil and garbage pollution.

    (a) Each towing vessel must be operated in compliance with:
    (1) Applicable sections of the Federal Water Pollution Control Act, 
including section 311 of the Federal Water Pollution Control Act, as 
amended (33 U.S.C. 1321);
    (2) Applicable sections of the Act to Prevent Pollution from Ships 
(33 U.S.C. 1901 et seq.); and
    (3) Parts 151, 155, and 156, of 33 CFR, as applicable.
    (b) Each towing vessel must be capable of preventing all oil spills 
from reaching the water during transfers by:
    (1) Pre-closing the scuppers/freeing ports, if the towing vessel is 
so equipped;
    (2) Using fixed or portable containment of sufficient capacity to 
contain the most likely spill, if 33 CFR 155.320 does not apply; or
    (3) Pre-deploying sorbent material on the deck around vents and 
fills.
    (c) No person may intentionally drain oil or hazardous material into 
the bilge of a towing vessel from any source. For purposes of this 
section, ``oil'' has the same meaning as ``oil'' defined in 33 U.S.C. 
1321.



Sec. 140.660  Vessel security.

    Each towing vessel must be operated in compliance with:
    (a) The Maritime Transportation Security Act of 2002 (46 U.S.C. 
Chapter 701); and
    (b) 33 CFR parts 101 and 104, as applicable.



Sec. 140.665  Inspection and testing required when making alterations, 
repairs, or other such operations involving riveting, welding, burning, 
or like fire-producing actions.

    (a) The inspections and issuance of certificates required by this 
section must be conducted in accordance with the provisions of NFPA 306 
(incorporated by reference, see Sec. 136.112 of this subchapter) before 
alterations, repairs, or other operations involving riveting, welding, 
burning, or other fire producing actions may be made aboard a vessel.
    (b) Until an inspection has been made to determine that such 
operation can be undertaken with safety, no alterations, repairs, or 
other such operations involving riveting, welding, burning, or like 
fire-producing actions must be made:
    (1) Within or on the boundaries of cargo tanks which have been used 
to carry combustible liquid or chemicals in bulk;
    (2) Within or on the boundaries of fuel tanks; or,
    (3) To pipe lines, heating coils, pumps, fittings, or other 
appurtenances connected to such cargo or fuel tanks.
    (c) Such inspections must be made and evidenced as follows:
    (1) In ports or places in the United States or its territories and 
possessions the inspection must be made by a marine chemist certificated 
by the National Fire Protection Association. However, if the services of 
such certified marine chemist are not reasonably available, the Officer 
in Charge, Marine Inspection (OCMI), upon the recommendation of the 
vessel owner and his or her contractor or their representative, must 
select a person who, in the case of an individual vessel, must be 
authorized to make such inspection. If the inspection indicated that 
such operations can be undertaken with safety, a certificate setting 
forth the fact in writing and qualified as may be required, must be 
issued by the certified marine chemist or the authorized person before 
the work is started. Such qualifications must include any requirements 
as may be deemed necessary to maintain the safe conditions in the spaces 
certified throughout the operation and must include such additional 
tests and certifications as considered required. Such qualifications and 
requirements must include precautions necessary to eliminate or minimize 
hazards that may be present from protective coatings or residues from 
cargoes.
    (2) When not in such a port or place, and a marine chemist or such 
person authorized by the OCMI, is not reasonably available, the 
inspection must be made by the master or person in charge

[[Page 14]]

and a proper entry must be made in the vessel's logbook.
    (d) The master or person in charge must secure copies of 
certificates issued by the certified marine chemist or such person 
authorized by the OCMI. The master or person in charge must maintain a 
safe condition on the vessel by full observance of all qualifications 
and requirements listed by the marine chemist or person authorized by 
the OCMI in the certificate.



Sec. 140.670  Use of auto pilot.

    Except for towing vessels in compliance with requirements in 33 CFR 
164.13(d), when an automatic pilot is used in areas of high traffic 
density, conditions of restricted visibility, or any other hazardous 
navigational situations, the master must ensure that:
    (a) It is possible to immediately establish manual control of the 
ship's steering;
    (b) A competent person is ready at all times to take over steering 
control; and
    (c) The changeover from automatic to manual steering and vice versa 
is made by, or under, the supervision of the officer in charge of the 
navigational watch.



            Subpart G_Navigation and Communication Equipment



Sec. 140.700  Applicability.

    This subpart applies to all towing vessels unless otherwise 
specified. Certain towing vessels are also subject to the navigation 
safety regulations in 33 CFR part 164.



Sec. 140.705  Charts and nautical publications.

    (a) This section applies to a towing vessel not subject to the 
requirements of 33 CFR 164.72.
    (b) A towing vessel must carry adequate and up-to-date charts, maps, 
and nautical publications for the intended voyage, including:
    (1) Charts, including electronic charts acceptable to the Coast 
Guard, of appropriate scale to make safe navigation possible. Towing 
vessels operating on the Western Rivers must have maps of appropriate 
scale issued by the Army Corps of Engineers or a river authority;
    (2) ``U.S. Coast Pilot'' or similar publication;
    (3) Coast Guard light list; and
    (4) Towing vessels that operate the Western Rivers must have river 
stage(s) or Water Surface Elevations as appropriate to the trip or 
route, as published by the U.S. Army Corps of Engineers or a river 
authority, must be available to the person in charge of the navigation 
watch.
    (c) Extracts or copies from the publications listed in paragraph (b) 
of this section may be carried, so long as they are applicable to the 
route.



Sec. 140.710  Marine radar.

    Requirements for marine radar are set forth in 33 CFR 164.72.



Sec. 140.715  Communications equipment.

    (a) Towing vessels must meet the communications requirements of 33 
CFR part 26 and 33 CFR 164.72, as applicable.
    (b) Towing vessels not subject to the provisions of 33 CFR part 26 
or 33 CFR 164.72 must have a Very High Frequency-Frequency Modulated 
(VHF-FM) radio installed and capable of monitoring VHF-FM Channels 13 
and 16, except when transmitting or receiving traffic on other VHF-FM 
channels, when participating in a Vessel Traffic Service (VTS), or when 
monitoring a channel of a VTS. The VHF-FM radio must be installed at 
each operating station and connected to a functioning battery backup.
    (c) All towing vessels must have at least one properly operating 
handheld VHF-FM radio in addition to the radios otherwise required.



Sec. 140.720  Navigation lights, shapes, and sound signals.

    Each towing vessel must be equipped with navigation lights, shapes, 
and sound signals in accordance with the International Regulations for 
Prevention of Collisions at Sea (COLREGS) or 33 CFR part 84 as 
appropriate to its area of operation.

[[Page 15]]



Sec. 140.725  Additional navigation equipment.

    Towing vessels must be equipped with the following equipment, as 
applicable to the area of operation:
    (a) Fathometer (except Western Rivers).
    (b) Search light, controllable from the vessel's operating station 
and capable of illuminating objects at a distance of at least two times 
the length of the tow.
    (c) Electronic position-fixing device, satisfactory for the area in 
which the vessel operates, if the towing vessel engages in towing 
seaward of the navigable waters of the U.S. or more than 3 nautical 
miles from shore on the Great Lakes.
    (d) Illuminated magnetic compass or an illuminated swing-meter 
(Western Rivers vessels only). The compass or swing-meter must be 
readable from each operating station.
    Note to Sec. 140.725. Certain towing vessels subject to Sec. 140.725 
are also subject to the requirements of 33 CFR 164.72 and Automatic 
Identification System requirements of 33 CFR 164.46.



                         Subpart H_Towing Safety



Sec. 140.800  Applicability.

    This subpart applies to all towing vessels unless otherwise 
specified. Certain vessels are also subject to the navigation safety 
regulations in 33 CFR parts 163 and 164.



Sec. 140.801  Towing gear.

    The owner, managing operator, master or officer in charge of a 
navigational watch of a towing vessel must ensure the following:
    (a) The strength of each component used for securing the towing 
vessel to the tow and for making up the tow is adequate for its intended 
service.
    (b) The size, material, and condition of towlines, lines, wires, 
push gear, cables, and other rigging used for making up a tow or 
securing the towing vessel to a tow must be appropriate for:
    (1) The horsepower or bollard pull of the vessel;
    (2) The static loads and dynamic loads expected during the intended 
service;
    (3) The environmental conditions expected during the intended 
service; and
    (4) The likelihood of mechanical damage.
    (c) Emergency procedures related to the tow have been developed and 
appropriate training provided to the crew for carrying out their 
emergency duties.



Sec. 140.805  Towing safety.

    Prior to getting underway, and giving due consideration to the 
prevailing and expected conditions of the trip or voyage, the officer in 
charge of the navigational watch for a towing vessel must ensure that:
    (a) The barges, vessels, or objects making up the tow are properly 
configured and secured;
    (b) Equipment, cargo, and industrial components on board the tow are 
properly secured and made ready for transit;
    (c) The towing vessel is safely and securely made up to the tow; and
    (d) The towing vessel has appropriate horsepower or bollard pull and 
is capable of safely maneuvering the tow.



Sec. 140.820  Recordkeeping for towing gear.

    (a) The results of the inspections required by 33 CFR 164.76 must be 
documented in the TVR, official logbook, or in accordance with the TSMS 
applicable to the vessel.
    (b) A record of the type, size, and service of each towline, face 
wire, and spring line, used to make the towing vessel fast to her tow, 
must be available to the Coast Guard or third-party auditor for review. 
The following minimum information is required in the record: The dates 
when examinations were performed, the identification of each item of 
towing gear examined, and the name(s) of the person(s) conducting the 
examinations.



                        Subpart I_Vessel Records



Sec. 140.900  Marine casualty reporting.

    Each towing vessel must comply with the requirements of part 4 of 
this chapter for reporting marine casualties and retaining voyage 
records.

[[Page 16]]



Sec. 140.905  Official logbooks.

    (a) A towing vessel of the United States, except one on a voyage 
from a port in the United States to a port in Canada, is required by 46 
U.S.C. 11301 to have an official logbook if the vessel is:
    (1) On a voyage from a port in the United States to a foreign port; 
or
    (2) Of at least 100 gross tons and on a voyage between a port in the 
United States on the Atlantic Ocean and one on the Pacific Ocean.
    (b) The Coast Guard furnishes, without fee, to masters of vessels of 
the United States, the official logbook as Form CG-706B or CG-706C, 
depending on the number of persons employed as crew. The first several 
pages of this logbook list various acts of Congress governing logbooks 
and the entries required in them.
    (c) When a voyage is completed, or after a specified time has 
elapsed, the master must file the official logbook containing required 
entries with the cognizant OCMI at or nearest the port where the vessel 
may be.



Sec. 140.910  Towing vessel record or record specified by TSMS.

    (a) This section applies to a towing vessel other than a vessel 
operating only in a limited geographic area or a vessel required by 
Sec. 140.905 to maintain an official logbook.
    (b) A towing vessel subject to this section must maintain a TVR or 
in accordance with the TSMS applicable to the towing vessel.
    (c) The TVR must include a chronological record of events as 
required by this subchapter. The TVR may be electronic or paper.
    (d) Except as required by Secs. 140.900 and 140.905, records do not 
need to be filed with the Coast Guard, but must be kept available for 
review by the Coast Guard upon request. Records, unless required to be 
maintained for a longer period by statute or other federal regulation, 
must be retained for at least 1 year after the date of the latest entry.



Sec. 140.915  Items to be recorded.

    (a) The following list of items must be recorded in the TVR, 
official logbook, or in accordance with the TSMS applicable to the 
vessel:
    (1) Personnel records, in accordance with Sec. 140.400;
    (2) Safety orientation, in accordance with Sec. 140.410;
    (3) Record of drills and instruction, in accordance with 
Sec. 140.420;
    (4) Examinations and tests, in accordance with Sec. 140.615;
    (5) Operative navigational safety equipment, in accordance with 
Sec. 140.620;
    (6) Navigation assessment, in accordance with Sec. 140.635;
    (7) Navigation safety training, in accordance with Sec. 140.645;
    (8) Oil residue discharges and disposals, in accordance with 
Sec. 140.655;
    (9) Record of inspection of towing gear, in accordance with 
Sec. 140.820; and
    (10) Fire-detection and fixed fire-extinguishing, in accordance with 
Sec. 142.240.
    (b) For the purposes of this subchapter, if items are recorded 
electronically in a TVR or other record as specified by the TSMS 
applicable to the towing vessel, these electronic entries must include 
the date and time of entry and name of the person making the entry. If 
after an entry has been made, someone responsible for entries determines 
there is an error in an entry, any entries to correct the error must 
include the date and time of entry and name of the person making the 
correction and must preserve a record of the original entry being 
corrected.
    Note to Sec. 140.915. For towing vessels subject to 46 U.S.C. 11301, 
there are statutory requirements in that U.S. Code section for 
additional items that must be entered in the official logbook. Regarding 
requirements outside this subchapter, such as requirements in 33 CFR 
151.25 to make entries in an oil record book, Sec. 140.915 does not 
change those requirements.



                           Subpart J_Penalties



Sec. 140.1000  Statutory penalties.

    Violations of the provisions of this subchapter will subject the 
violator to the applicable penalty provisions of Subtitle II of Title 
46, and Title 18, United States Code.

[[Page 17]]



Sec. 140.1005  Suspension and revocation.

    An individual is subject to proceedings under the provisions of 46 
U.S.C. 7703 and 7704, and part 5 of this chapter with respect to 
suspension or revocation of a license, certificate, document, or 
credential if the individual holds a license, certificate of registry, 
merchant mariner document, or merchant mariner credential and:
    (a) Commits an act of misconduct, negligence or incompetence;
    (b) Uses or is addicted to a dangerous drug; or
    (c) Violates or fails to comply with this subchapter or any other 
law or regulation intended to promote marine safety; or
    (d) Becomes a security risk, as described in 46 U.S.C. 7703.



PART 141_LIFESAVING--Table of Contents



                            Subpart A_General

Sec.
141.100  Purpose.
141.105  Applicability and delayed implementation for existing vessels.

            Subpart B_General Requirements for Towing Vessels

141.200  General provisions.
141.225  Alternate arrangements or equipment.
141.230  Readiness.
141.235  Inspection, testing, and maintenance.
141.240  Requirements for training crews.

          Subpart C_Lifesaving Requirements for Towing Vessels

141.305  Survival craft requirements for towing vessels.
141.310  Stowage of survival craft.
141.315  Marking of survival craft and stowage locations.
141.320  Inflatable survival craft placards.
141.325  Survival craft equipment.
141.330  Skiffs as survival craft.
141.340  Lifejackets.
141.350  Immersion suits.
141.360  Lifebuoys.
141.370  Miscellaneous lifesaving requirements for towing vessels.
141.375  Visual distress signals.
141.380  Emergency position indicating radio beacon (EPIRB).
141.385  Line throwing appliance.

    Authority: 46 U.S.C. 3103, 3301, 3306, 3308, 3316, 8104, 8904; 33 
CFR 1.05; DHS Delegation 0170.1.

    Source: USCG-2006-24412, 81 FR 40101, June 20, 2016, unless 
otherwise noted.



                            Subpart A_General



Sec. 141.100  Purpose.

    This part contains requirements for lifesaving equipment, 
arrangements, systems, and procedures on towing vessels.



Sec. 141.105  Applicability and delayed implementation for existing
vessels.

    (a) This part applies to all towing vessels subject to this 
subchapter.
    (1) An existing towing vessel must comply with the requirements in 
this part no later than either July 20, 2018 or the date the vessel 
obtains a Certificate of Inspection (COI), whichever date is earlier.
    (2) The delayed implementation provisions in paragraph (a)(1) of 
this section do not apply to a new towing vessel.
    (b) A towing vessel on an international voyage, subject to SOLAS 
(incorporated by reference, see Sec. 136.112 of this subchapter), must 
meet the applicable requirements in subchapter W of this chapter.
    (c) Towing vessels in compliance with SOLAS Chapter III will be 
deemed in compliance with this part.



            Subpart B_General Requirements for Towing Vessels



Sec. 141.200  General provisions.

    (a) Unless otherwise specified, all lifesaving equipment must be 
approved by the Commandant under the approval series specified in each 
section. Lifesaving equipment for personal use which is not required by 
this part need not be approved by the Commandant.
    (b) A listing of approved equipment and materials may be found at 
https://cgmix.uscg.mil/equipment. Each cognizant Officer in Charge, 
Marine Inspection (OCMI) may be contacted for information concerning 
approved equipment and materials.
    (c) Equipment requirements are based on the area in which a towing 
vessel is operating, not the route for

[[Page 18]]

which it is certificated. However, the towing vessel must be equipped 
per the requirements of its certificated route at the time of 
certification.



Sec. 141.225  Alternate arrangements or equipment.

    (a) Alternate arrangements or equipment to comply with this part may 
be approved in accordance with Sec. 136.115 of this subchapter.
    (b) If a Towing Safety Management System (TSMS) is applicable to the 
towing vessel, alternative means for complying with Secs. 141.340, 
141.350, and 141.360 may be approved by a third-party organization (TPO) 
and documented in the TSMS applicable to the vessel.
    (c) The Coast Guard may approve a novel lifesaving appliance or 
arrangement as an equivalent if it has performance characteristics at 
least equivalent to the appliance or arrangement required under this 
subchapter, and if it has been evaluated and tested under IMO Resolution 
A.520(13) (incorporated by reference, see Sec. 136.112 of this 
subchapter). Requests for evaluation of novel lifesaving appliances must 
be sent to the Commandant (CG-ENG).
    (d) The cognizant OCMI may require a towing vessel to carry 
specialized or additional lifesaving equipment if:
    (1) He or she determines that the conditions of the voyage render 
the requirements of this part inadequate; or
    (2) The towing vessel is operated in globally remote areas or severe 
environments not covered under this part. Such areas may include, but 
are not limited to, polar regions, remote islands, areas of extreme 
weather, and other remote areas where timely emergency assistance cannot 
be anticipated.



Sec. 141.230  Readiness.

    The master must ensure that all lifesaving equipment is properly 
maintained and ready for use at all times.



Sec. 141.235  Inspection, testing, and maintenance.

    (a) All lifesaving equipment must be tested and maintained in 
accordance with the minimum requirements of Sec. 199.190 of this 
chapter, as applicable, and the vessel's TSMS, if the vessel has a TSMS.
    (b) Inspections and tests of lifesaving equipment must be recorded 
in the TVR, official logbook, or in accordance with any TSMS applicable 
to the vessel. The following minimum information is required:
    (1) The dates when inspections and tests were performed, the number 
or other identification of each unit inspected and tested, the results 
of the inspections and tests, and the name of the crewmember, surveyor 
or auditor and any others conducting the inspections and tests; and
    (2) Receipts and other records documenting these inspections and 
tests must be retained for at least 1 year after the expiration of the 
COI and made available upon request.



Sec. 141.240  Requirements for training crews.

    Training requirements are contained in part 140 of this subchapter.



          Subpart C_Lifesaving Requirements for Towing Vessels



Sec. 141.305  Survival craft requirements for towing vessels.

    (a) General purpose. Survival craft provide a means for survival 
when evacuation from the towing vessel is necessary. The craft and 
related equipment should be selected so as to provide for the basic 
needs of the crew, such as shelter from life threatening elements, until 
rescue resources are expected to arrive, taking into account the scope 
and nature of the towing vessel's operations.
    (b) Functional requirements. A towing vessel's survival craft must 
meet the functional requirements of paragraphs (b)(1) through (5) of 
this section. Functional requirements describe the objectives of the 
regulation. Survival craft must:
    (1) Be readily accessible;
    (2) Have an aggregate capacity sufficient to accommodate the total 
number of individuals onboard, as specified in paragraph (c) of this 
section;
    (3) Provide a means for sheltering its complement appropriate to the 
route;

[[Page 19]]

    (4) Provide minimum equipment for survival if recovery time is 
expected to be greater than 24 hours; and
    (5) Be marked so that an individual not familiar with the operation 
of the specific survival craft has sufficient guidance to utilize the 
craft for its intended use.
    (c) Compliance options. A towing vessel must meet the applicable 
functional requirements. Compliance with the functional requirements of 
paragraph (b) of this section may be met by one of these two options:
    (1) A towing vessel that meets the prescriptive requirements of 
paragraph (d) of this section will have complied with the functional 
requirements; or
    (2) If an owner or managing operator chooses to meet the functional 
requirement through means other than as specified in paragraph (c)(1) of 
this section, the means must be accepted by the cognizant OCMI or, if 
the vessel has a TSMS, then by a TPO and, in the latter case, documented 
in the TSMS applicable to the vessel. The design, testing, and 
examination scheme for meeting these functional requirements must be 
included as part of the TSMS applicable to the vessel.
    (d) Prescriptive requirements. (1) Except as provided in paragraphs 
(d)(2) through (4) of this section, each towing vessel must carry the 
survival craft specified in Table 141.305 of this section, as 
appropriate for the towing vessel, in an aggregate capacity to 
accommodate the total number of individuals onboard.

                                          Table 141.305--Survival Craft
----------------------------------------------------------------------------------------------------------------
                                                                  Area of operation
                                    ----------------------------------------------------------------------------
                                                                  Great Lakes and   Coastwise and ltd.
                                                                 lakes, bays, and        coastwise
                                          Limited                sounds as defined --------------------
    Equipment (approval series)       geographic area            in Sec.  136.110
                                       or protected     Rivers --------------------  3 miles  >3 miles   Oceans
                                          waters                 3 miles  >3 miles    from      from
                                                                  from      from      shore     shore
                                                                  shore     shore
----------------------------------------------------------------------------------------------------------------
                                              Cold Water Operation
----------------------------------------------------------------------------------------------------------------
Inflatable Buoyant Apparatus         None \1\........  \2\ 100  \2\ 100%  ........  \2\ 100%
 (160.010).                                                  %
Inflatable Liferaft with SOLAS B     None \1\........  .......  ........      100%  ........      100%
 Pack (160.151).
Inflatable Liferaft with SOLAS A     None \1\........  .......  ........  ........  ........  ........      100%
 Pack (160.151).
----------------------------------------------------------------------------------------------------------------
                                              Warm Water Operation
----------------------------------------------------------------------------------------------------------------
Rigid Buoyant Apparatus (160.010)..  None \1\........  \2\ 100  \2\ 100%  \2\ 100%  \2\ 100%
                                                             %
Inflatable Liferaft with SOLAS B     None \1\........  .......  ........  ........  ........  \3\ 100%
 Pack (160.151).
Inflatable Liferaft with SOLAS A     None \1\........  .......  ........  ........  ........  ........      100%
 Pack (160.151).
----------------------------------------------------------------------------------------------------------------
\1\ No survival craft are required unless deemed necessary by the cognizant OCMI or a TSMS applicable to the
  towing vessel.
\2\ A skiff that meets requirements in Sec.  141.330(a) through (f) may be substituted for all or part of
  required equipment.
\3\ Inflatable buoyant apparatus (approval series 160.010) may be accepted or substituted if the vessel carries
  a 406 MHz Cat 1 emergency position indicating radio beacon (EPIRB) meeting 47 CFR part 80.

    (2) The following approved survival craft may be substituted for 
survival craft required by Table 141.305 of this section:
    (i) A lifeboat approved under approval series 160.135 may be 
substituted for any survival craft required by this section, provided it 
is arranged and equipped in accordance with part 199 of this chapter.
    (ii) An inflatable liferaft approved under approval series 160.051 
or 160.151, may be substituted for an inflatable buoyant apparatus or 
rigid buoyant apparatus.
    (iii) An inflatable buoyant apparatus approved under approval series 
160.010 may be substituted for a rigid buoyant apparatus.
    (iv) A life float approved under approval series 160.027 may be 
substituted for a rigid buoyant apparatus.
    (3) Unless it is determined to be necessary by the cognizant OCMI 
under Sec. 141.225, or a TSMS applicable to the towing vessel, each 
towing vessel that operates solely on rivers need not carry survival 
craft if:
    (i) It carries a 406 MHz Cat 1 EPIRB meeting 47 CFR part 80;

[[Page 20]]

    (ii) It is designed for pushing ahead and has a TSMS that contains 
procedures for evacuating crewmembers onto the tow or other safe 
location; or
    (iii) It operates within 1 mile of shore.
    (4) A towing vessel which is not required by this part to carry 
survival craft may carry a non-approved survival craft as excess 
equipment, provided that it is maintained in good working condition and 
maintained according to the manufacturer's instructions.



Sec. 141.310  Stowage of survival craft.

    Survival craft must be stowed in accordance with the requirements of 
Sec. 199.130 of this chapter, as far as is practicable on existing 
towing vessels.



Sec. 141.315  Marking of survival craft and stowage locations.

    Survival craft and stowage locations must be marked in accordance 
with the requirements of Secs. 199.176 and 199.178 of this chapter.



Sec. 141.320  Inflatable survival craft placards.

    Every towing vessel equipped with an inflatable survival craft must 
have, in conspicuous places near each inflatable survival craft, 
approved placards or other posted instructions for launching and 
inflating inflatable survival craft.



Sec. 141.325  Survival craft equipment.

    (a) Each item of survival craft equipment must be of good quality, 
effective for the purpose it is intended to serve, and secured to the 
craft.
    (b) Each towing vessel carrying a lifeboat must carry equipment in 
accordance with Sec. 199.175 of this chapter.
    (c) Each life float and rigid buoyant apparatus must be fitted with 
a lifeline, pendants, a painter, and floating electric water light 
approved under approval series 161.010.



Sec. 141.330  Skiffs as survival craft.

    A skiff may be substituted for all or part of the approved survival 
craft for towing vessels that do not operate more than 3 miles from 
shore. A skiff used as a survival craft does not require Coast Guard 
approval but must:
    (a) Be capable of being launched within 5 minutes under all 
circumstances;
    (b) Be of suitable size for all persons on board the towing vessel;
    (c) Not exceed the loading specified on the capacity plate required 
by 33 CFR 183.23;
    (d) Not contain modifications affecting the buoyancy or structure of 
the skiff;
    (e) Be of suitable design for the vessel's intended service; and
    (f) Be marked in accordance with Secs. 199.176 and 199.178 of this 
chapter.



Sec. 141.340  Lifejackets.

    (a) Each towing vessel must carry at least one appropriately-sized 
lifejacket, approved under approval series 160.002, 160.005, 160.055, 
160.155, or 160.176, for each person on board.
    (b) For towing vessels with berthing aboard, a sufficient number of 
additional lifejackets must be carried so that a lifejacket is 
immediately available for persons at each normally manned watch station.
    (c) Where alternative means are used to meet the requirements of 
this section, as permitted by Sec. 141.225, there must be at least one 
lifejacket for each person onboard. Any TSMS applicable to the towing 
vessel must specify the number and location of lifejackets in such a 
manner as to facilitate immediate accessibility at normally occupied 
spaces including, but not limited to, accommodation spaces and watch 
stations.
    (d) Lifejackets must be readily accessible.
    (e) If the towing vessel carries inflatable lifejackets they must be 
of similar design to each other and have the same mode of operation.
    (f) Each lifejacket must be marked:
    (1) In block capital letters with the name of the vessel; and
    (2) With Type I retro-reflective material approved under approval 
series 164.018. The arrangement of the retro-reflective material must 
meet IMO Resolution A.658(16) (incorporated by reference, see 
Sec. 136.112 of this subchapter).
    (g) Lifejackets must have the following attachments and fittings:

[[Page 21]]

    (1) Each lifejacket must have a lifejacket light approved under 
approval series 161.012 or 161.112 securely attached to the front 
shoulder area of the lifejacket.
    (2) Each lifejacket must have a whistle firmly secured by a cord to 
the lifejacket.
    (h) Stowage positions for lifejackets stowed in a berthing space or 
stateroom and all lifejacket containers must be marked in block capital 
letters and numbers with the minimum quantity, identity, and, if sizes 
other than adult or universal sizes are used on the vessel, the size of 
the lifejackets stowed inside the container. The equipment may be 
identified in words or with the appropriate symbol from IMO Resolution 
A.760(18) (incorporated by reference, see Sec. 136.112 of this 
subchapter).



Sec. 141.350  Immersion suits.

    (a) Except as provided in paragraph (a)(4) of this section, each 
towing vessel operating north of lat. 32 deg. N. or south of lat. 
32 deg. S. must carry the number of immersion suits as prescribed in 
this paragraph (a):
    (1) Each towing vessel operating in those regions must carry at 
least one appropriate-size immersion suit, approved under approval 
series 160.171, for each person onboard.
    (2) In addition to the immersion suits required under paragraph 
(a)(1) of this section, each watch station, work station, and industrial 
work site must have enough immersion suits to equal the number of 
persons normally on watch in, or assigned to, the station or site at one 
time. However, an immersion suit is not required at a station or site 
for a person whose cabin or berthing area (and the immersion suits 
stowed in that location) is readily accessible to the station or site.
    (3) Where alternative means are used to meet the requirements of 
this section, as permitted by Sec. 141.225, there must be at least one 
immersion suit of the appropriate size for each person onboard. Any TSMS 
applicable to the towing vessel must specify the number and location of 
immersion suits in such a manner as to facilitate immediate 
accessibility at normally occupied spaces including, but not limited to, 
accommodation spaces and watch stations.
    (4) A towing vessel operating on rivers or in a limited geographic 
area is not required to carry immersion suits.
    (b) Immersion suits carried on towing vessels must meet the 
requirements of Sec. 199.70(c) and (d) of this chapter.



Sec. 141.360  Lifebuoys.

    (a) A towing vessel must carry lifebuoys as follows:
    (1) A towing vessel less than 26 feet length must carry a minimum of 
one lifebuoy of not less than 510 millimeters (20 inches) in diameter.
    (2) A towing vessel of at least 26 feet, but less than 79 feet, in 
length must carry a minimum of two lifebuoys located on opposite sides 
of the vessel where personnel are normally present. Lifebuoys must be at 
least 610 millimeters (24 inches) in diameter.
    (3) A towing vessel 79 feet or more in length must carry four 
lifebuoys, with one lifebuoy located on each side of the operating 
station. Lifebuoys must be at least 610 millimeters (24 inches) in 
diameter.
    (4) Where alternative means are used to meet the requirements of 
this section, as permitted by Sec. 141.225, any TSMS applicable to the 
towing vessel must specify the number and location of lifebuoys in such 
a manner as to facilitate rapid deployment of lifebuoys from exposed 
decks, including the pilot house.
    (b) Each lifebuoy on a towing vessel must:
    (1) Be approved under approval series 160.050 or 160.150;
    (2) Be capable of being rapidly cast loose;
    (3) Not be permanently secured to the vessel in any way;
    (4) Be marked in block capital letters with the name of the vessel; 
and
    (5) Be orange in color, if on a vessel on an oceans or coastwise 
route.
    (c) Lifebuoys must have the following attachments and fittings:
    (1) At least one lifebuoy must have a lifeline, secured around the 
body of the lifebuoy. If more than one lifebuoy is carried, at least one 
must not have a lifeline attached. Each lifeline on a lifebuoy must:
    (i) Be buoyant;

[[Page 22]]

    (ii) Be of at least 18.3 meters (60 feet) in length;
    (iii) Be non-kinking;
    (iv) Have a diameter of at least 7.9 millimeters (\5/16\ inch);
    (v) Have a breaking strength of at least 5 kilonewtons (1,124 
pounds); and
    (vi) Be of a dark color if synthetic, or of a type certified to be 
resistant to deterioration from ultraviolet light.
    (2) At least two lifebuoys on a towing vessel greater than 26 feet 
must be fitted with a floating electric water light approved under 
approval series 161.010 or 161.110, unless the towing vessel is limited 
to daytime operation, in which case no floating electric water light is 
required.
    (3) If a towing vessel carries only one lifebuoy, the lifebuoy must 
be fitted with a floating electric water light approved under approval 
series 161.010 or 160.110, unless the towing vessel is limited to 
daytime operation, in which case no floating electric water light is 
required. The water light must be attached by the lanyard with a 
corrosion-resistant clip to allow the water light to be quickly 
disconnected from the lifebuoy. The clip must have a strength of at 
least 22.7 kilograms (50 pounds).
    (4) Each lifebuoy with a floating electric water light must have a 
lanyard of at least 910 millimeters (3 feet) in length, but not more 
than 1,830 millimeters (6 feet), securing the water light around the 
body of the lifebuoy.



Sec. 141.370  Miscellaneous life saving requirements for towing vessels.

    Miscellaneous lifesaving requirements are summarized in Table 
141.370 of this section. Equipment requirements are based on the area in 
which a towing vessel is operating, not the route for which it is 
certificated.

                                                    Table 141.370--Miscellaneous Lifesaving Equipment
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                   Area of operation
                              --------------------------------------------------------------------------------------------------------------------------
                                                                    Great Lakes and lakes, bays, and     Coastwise and ltd. coastwise
  Equipment (46 CFR section)                                       sounds as defined in Sec.  136.110 ----------------------------------
                                    Limited           Rivers      ------------------------------------                                        Oceans
                                geographic area                      3 miles from      3 miles from      3 miles from    >3 miles from
                                                                         shore             shore            shore            shore
--------------------------------------------------------------------------------------------------------------------------------------------------------
Visual Distress Signals (Sec.  3 day and 3       3 day and 3       3 day and 3       6 day and 6       3 day and 3      6 day and 6      6 day and 6
  141.375).                     night.            night.            night.            night.            night.           night.           night.
EPIRBs (Sec.  141.380).......  ................  ................  ................  1 \1\...........  1-.............  1..............  1
Line Throwing Appliances       ................  ................  ................  ................  ...............  1-.............  1
 (Sec.  141.385).
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ Great Lakes service only.



Sec. 141.375  Visual distress signals.

    (a) Carriage requirement. A towing vessel must carry a combination 
of day and night visual distress signals indicated in Table 141.370 of 
Sec. 141.370 for specified areas where the vessel operates.
    (b) Day and night visual distress signals. Hand-held red flare 
distress signals, approved under approval series 160.021 or 160.121, and 
hand-held rocket-propelled parachute red flares, approved under approval 
series 160.036 or 160.136, are acceptable as both day and night signals.
    (c) Signals for day visual distress only. Floating orange smoke 
signals, approved under approval series 160.022, 160.122, or 160.157, 
and hand-held orange smoke distress signals, approved under approval 
series 160.037, are only acceptable as day signals.
    (d) Limited geographic area. A vessel operating in a limited 
geographic area on a short run limited to approximately 30 minutes away 
from the dock is not required to carry visual distress signals under 
this section.
    (e) Stowage. Each pyrotechnic distress signal carried to meet this 
section must be stowed in either:
    (1) A portable watertight container carried at the operating 
station. Portable watertight containers for pyrotechnic distress signals 
must be of a bright color and must be clearly marked in legible 
contrasting letters at least 12.7 millimeters (0.5 inches) high with 
``DISTRESS SIGNALS''; or

[[Page 23]]

    (2) A pyrotechnic locker secured above the freeboard deck, away from 
heat, in the vicinity of the operating station.



Sec. 141.380  Emergency position indicating radio beacon (EPIRB).

    (a) Each towing vessel operating on oceans, coastwise, limited 
coastwise, or beyond 3 nautical miles from shore upon the Great Lakes 
must carry a Category 1, 406 MHz satellite Emergency Position Indicating 
Radio Beacon (EPIRB) that meets the requirements of 47 CFR part 80.
    (b) When the towing vessel is underway, the EPIRB must be stowed in 
its float-free bracket with the controls set for automatic activation 
and be mounted in a manner so that it will float free if the towing 
vessel sinks.
    (c) The name of the towing vessel must be marked or painted in 
clearly legible letters on each EPIRB, except on an EPIRB in an 
inflatable liferaft.
    (d) The owner or managing operator must maintain valid proof of 
registration.
    Note to paragraph (d). Registration information can be found at 
www.beaconregistration.noaa.gov/.



Sec. 141.385  Line throwing appliance.

    Each towing vessel operating in oceans and coastwise service must 
have a line throwing appliance approved under approval series 160.040.
    (a) Stowage. The line throwing appliance and its equipment must be 
readily accessible for use.
    (b) Additional equipment. The line throwing appliance must have:
    (1) The equipment on the list provided by the manufacturer with the 
approved appliance; and
    (2) An auxiliary line that:
    (i) Is at least 450 meters (1,500 feet) long;
    (ii) Has a breaking strength of at least 40 kilonewtons (9,000 
pounds-force); and
    (iii) Is, if synthetic, of a dark color or certified by the 
manufacturer to be resistant to deterioration from ultraviolet light.



PART 142_FIRE PROTECTION--Table of Contents



                           Subpart A _General

Sec.
142.100  Purpose.
142.105  Applicability and delayed implementation for existing vessels.

            Subpart B_General Requirements for Towing Vessels

142.205  Alternate standards.
142.210  Alternate arrangements or equipment.
142.215  Approved equipment.
142.220  Fire hazards to be minimized.
142.225  Storage of flammable or combustible products.
142.226  Firefighter's outfit.
142.227  Fire axe.
142.230  Hand-portable fire extinguishers and semi-portable fire-
          extinguishing systems.
142.235  Vessels contracted for prior to November 19, 1952.
142.240  Inspection, testing, maintenance, and records.
142.245  Requirements for training crews to respond to fires.

         Subpart C_Fire Extinguishing and Detection Requirements

142.300  Excepted vessels.
142.315  Additional fire-extinguishing equipment requirements.
142.325  Fire pumps, fire mains, and fire hoses.
142.330  Fire-detection system requirements.

    Authority: 46 U.S.C. 3103, 3301, 3306, 3308, 3316, 8104, 8904; 33 
CFR 1.05; DHS Delegation 0170.1.

    Source: USCG-2006-24412, 81 FR 40101, June 20, 2016, unless 
otherwise noted.



                            Subpart A_General



Sec. 142.100  Purpose.

    This part contains requirements for fire suppression and detection 
equipment and arrangements on towing vessels.



Sec. 142.105  Applicability and delayed implementation for existing
vessels.

    This part applies to all towing vessels subject to this subchapter.
    (a) An existing towing vessel must comply with the requirements in 
this part no later than either July 20, 2018

[[Page 24]]

or the date the vessel obtains a Certificate of Inspection (COI), 
whichever date is earlier.
    (b) The delayed implementation provisions in paragraph (a) of this 
section do not apply to a new towing vessel.



            Subpart B_General Requirements for Towing Vessels



Sec. 142.205  Alternate standards.

    (a) Towing vessels in compliance with Chapter II-2 of SOLAS 
(incorporated by reference, see Sec. 136.112 of this subchapter) will be 
deemed to be in compliance with this part.
    (b) Towing vessels that comply with other alternate standards, 
deemed by the Commandant to provide an equivalent level of safety and 
performance, will be in compliance with this part.



Sec. 142.210  Alternate arrangements or equipment.

    (a) Alternate arrangements or equipment to comply with this part may 
be approved in accordance with Sec. 136.115 of this subchapter.
    (b) All owners or operators of towing vessels with a Towing Safety 
Management System (TSMS) may comply with the requirements of subpart B 
of this part by outfitting their vessels with appropriate alternate 
arrangements or equipment so long as these variations provide an 
equivalent level of safety and performance and are properly documented 
in the TSMS.
    (c) The cognizant Officer in Charge, Marine Inspection (OCMI) may 
require a towing vessel to carry specialized or additional fire 
protection, suppression, or detection equipment if:
    (1) He or she determines that the conditions of the voyage render 
the requirements of this part inadequate; or
    (2) The towing vessel is operated in globally remote areas or severe 
environments not covered under this part. These areas may include, but 
are not limited to, polar regions, remote islands, areas of extreme 
weather, and other remote areas where timely emergency assistance cannot 
be anticipated.



Sec. 142.215  Approved equipment.

    (a) All hand-portable fire extinguishers, semi-portable fire-
extinguishing systems, and fixed fire-extinguishing systems required by 
this part must be approved by the Commandant (CG-ENG). Where other 
equipment in this part is required to be approved, such equipment 
requires the specific approval of the Commandant.
    (b) A listing of approved equipment and materials may be found 
online at https://cgmix.uscg.mil/equipment. Each cognizant OCMI may be 
contacted for information concerning approved equipment and materials.
    (c) New installations of fire-extinguishing and fire-detection 
equipment of a type not required, or in excess of that required by this 
part, may be permitted if Coast Guard approved, or if accepted by the 
local OCMI, a TPO, or a Nationally Recognized Testing Laboratory (NRTL). 
Existing equipment and installations not meeting the applicable 
requirements of this part may be continued in service so long as they 
are in good condition and accepted by the local OCMI or TPO.



Sec. 142.220  Fire hazards to be minimized.

    Each towing vessel must be maintained and operated so as to minimize 
fire hazards and to ensure the following:
    (a) All bilges and void spaces are kept free from accumulation of 
combustible and flammable materials and liquids insofar as practicable.
    (b) Storage areas are kept free from accumulation of combustible and 
flammable materials insofar as practicable.



Sec. 142.225  Storage of flammable or combustible products.

    (a) Paints, coatings, or other flammable or combustible products 
onboard a towing vessel must be stored in a designated storage room or 
cabinet when not in use.
    (b) If a storage room is provided, it may be any room or compartment 
that is free of ignition sources.
    (c) If a dedicated storage cabinet is provided it must be secured to 
the vessel so that it does not move and must be either:
    (1) A flammable liquid storage cabinet that satisfies UL 1275 
(incorporated by reference, see Sec. 136.112 of this subchapter); or

[[Page 25]]

    (2) A flammable liquid storage cabinet that satisfies FM Approvals 
Standard 6050 (incorporated by reference, see Sec. 136.112 of this 
subchapter); or
    (3) Another suitable steel container that provides an equivalent 
level of protection.
    (d) A B-II portable fire extinguisher must be located near the 
storage room or cabinet. This is in addition to the portable fire 
extinguishers required by Tables 142.230(d)(1) and 142.230(d)(2) of 
Sec. 142.230.



Sec. 142.226  Firefighter's outfit.

    Each towing vessel 79 feet or more in length operating on oceans and 
coastwise routes that does not have an installed fixed fire-
extinguishing system must have the following:
    (a) At least two firefighter's outfits that meet NFPA 1971 
(incorporated by reference, see Sec. 136.112 of this subchapter); and
    (b) Two self-contained breathing apparatus of the pressure demand, 
open circuit type, approved by the National Institute for Occupational 
Safety and Health (NIOSH), under 42 CFR part 84. The breathing apparatus 
must have a minimum 30-minute air supply and full facepiece.



Sec. 142.227  Fire axe.

    Each towing vessel must be equipped with at least one fire axe that 
is readily accessible for use from the exterior of the vessel.



Sec. 142.230  Hand-portable fire extinguishers and semi-portable
fire-extinguishing systems.

    (a) Hand-portable fire extinguishers and semi-portable fire-
extinguishing systems are classified by a combination letter and Roman 
numeral. The letter indicates the type of fire which the unit could be 
expected to extinguish, and the Roman numeral indicates the relative 
size of the unit.
    (b) For the purpose of this subchapter, all required hand-portable 
fire extinguishers and semi-portable fire-extinguishing systems must 
include Type B classification, suitable for extinguishing fires 
involving flammable liquids, grease, etc.
    (c) The number designations for size run from ``I'' for the smallest 
to ``V'' for the largest. Sizes I and II are hand-portable fire 
extinguishers; sizes III, IV, and V are semi-portable fire-extinguishing 
systems, which must be fitted with hose and nozzle or other practical 
means to cover all portions of the space involved. Examples of the sizes 
for some of the typical hand-portable fire extinguishers and semi-
portable fire-extinguishing systems appear in Table 142.230(c) of this 
section.

                           Table 142.230(c)--Portable and Semi-Portable Extinguishers
----------------------------------------------------------------------------------------------------------------
                                                                                 Carbon dioxide,   Dry chemical,
                          Classification                           Foam, liters     kilograms        kilograms
                                                                     (gallons)       (pounds)        (pounds)
----------------------------------------------------------------------------------------------------------------
B-I..............................................................   4.75 (1.25)            2 (4)           1 (2)
B-II.............................................................     9.5 (2.5)           7 (15)        4.5 (10)
B-III............................................................       45 (12)          16 (35)          9 (20)
B-IV.............................................................       75 (20)          23 (50)       13.5 (30)
B-V..............................................................      125 (33)         45 (100)         23 (50)
----------------------------------------------------------------------------------------------------------------

    (d)(1) Towing vessels of 65 feet or less in length must carry at 
least the minimum number of hand-portable fire extinguishers set forth 
in Table 142.230(d)(1) of this section.

        Table 142.230(d)(1)--B-I Hand-Portable Fire Extinguishers
------------------------------------------------------------------------
                                     Minimum number of B-I hand-portable
                                       fire extinguishers required \1\
                                   -------------------------------------
           Length, feet               No fixed fire-      Fixed fire-
                                      extinguishing      extinguishing
                                        system in          system in
                                     machinery space    machinery space
------------------------------------------------------------------------
Under 26 \2\......................                 1                  0
26 and over, but under 40.........                 2                  1
40 and over, but not over 65......                 3                  2
------------------------------------------------------------------------
\1\ One B-II hand-portable fire extinguisher may be substituted for two
  B-I hand-portable fire extinguishers.
\2\ See Sec.  136.105 of this subchapter concerning vessels under 26
  feet.

    (2) Towing vessels of more than 65 feet in length must carry at 
least the minimum number of hand-portable fire extinguishers set forth 
in Table 142.230(d)(2) of this section.

       Table 142.230(d)(2)--B-II Hand-Portable Fire Extinguishers
------------------------------------------------------------------------
                   Gross tonnage--                     Minimum number of
------------------------------------------------------     B-II hand-
                                                         portable fire
              Over                      Not over         extinguishers
------------------------------------------------------------------------
                                  50.................                 1
50..............................  100................                 2
100.............................  500................                 3
500.............................  1,000..............                 6

[[Page 26]]

 
1,000...........................  ...................                 8
------------------------------------------------------------------------

    (i) In addition to the hand-portable extinguishers required by 
paragraph (d)(2) of this section, one Type B-II hand-portable fire 
extinguisher must be fitted in the engine room for each 1,000 brake 
horsepower of the main engines or fraction thereof. A towing vessel is 
not required to carry more than six additional B-II extinguishers in the 
engine room for this purpose, irrespective of horsepower.
    (ii) [Reserved]
    (e) The frame or support of any size III, IV, or V semi-portable 
extinguisher fitted with wheels must be welded or otherwise permanently 
attached to a steel bulkhead or deck to prevent it from rolling under 
heavy sea conditions.



Sec. 142.235  Vessels contracted for prior to November 19, 1952.

    (a) Towing vessels contracted for construction prior to November 19, 
1952, must meet the applicable provisions of this part concerning the 
number and general type of equipment required.
    (b) Existing equipment and installations previously approved, but 
not meeting the applicable requirements for approval by the Commandant, 
may be continued in service so long as they are in good condition.
    (c) All new installations and replacements must meet the 
requirements of this part.



Sec. 142.240  Inspection, testing, maintenance, and records.

    (a) Inspection and testing. All hand-portable fire extinguishers, 
semi-portable fire-extinguishing systems, fire-detection systems, and 
fixed fire-extinguishing systems, including ventilation, machinery 
shutdowns, and fixed fire-extinguishing system pressure-operated dampers 
onboard the vessel, must be inspected or tested at least once every 12 
months, as prescribed in paragraphs (a)(1) through (8) of this section, 
or more frequently if otherwise required by the TSMS applicable to the 
vessel.
    (1) Portable fire extinguishers must be tested in accordance with 
the inspection, maintenance procedures and hydrostatic pressure tests 
required by Chapters 7 and 8 of NFPA 10, Portable Fire Extinguishers 
(incorporated by reference, see Sec. 136.112 of this subchapter), with 
the frequency as specified by NFPA 10. In addition, carbon dioxide and 
Halocarbon portable fire extinguishers must be refilled when the net 
content weight loss exceeds that specified for fixed systems in Table 
142.240 of this section.
    (2) Semi-portable and fixed fire-extinguishing systems must be 
inspected and tested, as required by Table 142.240 of this section, in 
addition to the tests required by Secs. 147.60 and 147.65 of this 
chapter.
    (3) Flexible connections and discharge hoses on all semi-portable 
extinguishers and fixed extinguishing systems must be inspected and 
tested in accordance with Sec. 147.65 of this chapter.
    (4) All cylinders containing compressed gas must be tested and 
marked in accordance with Sec. 147.60 of this chapter.
    (5) All piping, controls, valves, and alarms must be inspected; and 
the operation of controls, alarms, ventilation shutdowns, and pressure-
operated dampers for each fixed fire-extinguishing system and detecting 
system must be tested, to determine that the system is operating 
properly.
    (6) The fire main system must be charged, and sufficient pressure 
must be verified at the most remote and highest outlets.
    (7) All fire hoses must be inspected for excessive wear, and 
subjected to a test pressure equivalent to the maximum service pressure. 
All fire hoses which are defective and incapable of repair must be 
destroyed.
    (8) All smoke- and fire-detection systems, including detectors and 
alarms, must be tested.

[[Page 27]]



    Table 142.240--Semi-Portable and Fixed Fire-Extinguishing Systems
------------------------------------------------------------------------
            Type system                             Test
------------------------------------------------------------------------
Carbon dioxide....................  Weigh cylinders. Recharge if weight
                                     loss exceeds 10 percent of weight
                                     of the charge. Test time delays,
                                     alarms, and ventilation shutdowns
                                     with carbon dioxide, nitrogen, or
                                     other nonflammable gas as stated in
                                     the system manufacturer's
                                     instruction manual. Inspect hoses
                                     for damage or decay. Ensure that
                                     nozzles are unobstructed. Cylinders
                                     must be tested and marked, and all
                                     flexible connections on fixed
                                     carbon dioxide systems must be
                                     tested or renewed, as required by
                                     Secs.  147.60 and 147.65 of this
                                     chapter.
Halon and Halocarbon..............  Recharge or replace if weight loss
                                     exceeds 5 percent of the weight of
                                     the charge or if cylinder has a
                                     pressure gauge, recharge cylinder
                                     if pressure loss exceeds 10 percent
                                     adjusted for temperature. Test time
                                     delays, alarms, and ventilation
                                     shutdowns with carbon dioxide,
                                     nitrogen, or other nonflammable gas
                                     as stated in the system
                                     manufacturer's instruction manual.
                                     Inspect hoses for damage or decay.
                                     Ensure that nozzles are
                                     unobstructed. Cylinders must be
                                     tested and marked, and all flexible
                                     connections to Halon 1301 and
                                     halocarbon cylinders must be tested
                                     or renewed, as required by Secs.
                                     147.60 and 147.65 or Sec.  147.67
                                     of this chapter.
                                    NOTE: Halon 1301 system approvals
                                     have expired, but existing systems
                                     may be retained if they are in good
                                     and serviceable condition to the
                                     satisfaction of the Coast Guard
                                     inspector.
Dry Chemical (cartridge operated).  Inspect pressure cartridge and
                                     replace if end is punctured or if
                                     determined to have leaked or is in
                                     an unsuitable condition. Inspect
                                     hose and nozzle to see if they are
                                     clear. Insert charged cartridge.
                                     Ensure dry chemical is free flowing
                                     (not caked) and extinguisher
                                     contains full charge.
Dry chemical (stored pressure)....  See that pressure gauge is within
                                     operating range. If not, or if the
                                     seal is broken, weigh or otherwise
                                     determine that extinguisher is
                                     fully charged with dry chemical.
                                     Recharge if pressure is low or dry
                                     chemical is needed.
Foam (stored pressure)............  See that pressure gauge, if so
                                     equipped, is within the operating
                                     range. If not, or if the seal is
                                     broken, weigh or otherwise
                                     determine that extinguisher is
                                     fully charged with foam. Recharge
                                     if pressure is low or foam is
                                     needed. Replace premixed agent
                                     every 3 years.
Inert gas.........................  Recharge or replace if cylinder
                                     pressure loss exceeds 5 percent,
                                     adjusted for temperature. Test time
                                     delays, alarms, and ventilation
                                     shutdowns with carbon dioxide,
                                     nitrogen, or other nonflammable gas
                                     as stated in the system
                                     manufacturer's instruction manual.
                                     Inspect hoses and nozzles to ensure
                                     they are clear.
Water mist........................  Test and inspect system in
                                     accordance with the maintenance
                                     instructions in the system
                                     manufacturer's design,
                                     installation, operation, and
                                     maintenance manual.
------------------------------------------------------------------------

    (b) Maintenance. In addition to the requirements in paragraph (a) of 
this section, all fire-suppression and detection equipment and systems 
on board a towing vessel must be maintained in accordance with the 
attached nameplate, manufacturer's approved design manual, or as 
otherwise provided in any TSMS applicable to the vessel.
    (c) Records. (1) The records of inspections and tests of fire-
detection systems and fixed fire-extinguishing systems must be recorded 
in the TVR, official logbook, or in accordance with any TSMS applicable 
to the vessel. The following minimum information is required:
    (i) The dates when inspections and tests were performed, the number 
and any other identification of each unit inspected and tested, the 
results of the inspections and tests, and the name of the crewmember, 
surveyor or auditor and any others conducting the inspections and tests, 
must be included.
    (ii) Receipts and other records generated by these inspections and 
tests must be retained for at least 1 year and made available upon 
request.
    (2) The records of inspections and tests of hand-portable fire 
extinguishers and semi-portable fire-extinguishing systems may be 
recorded in accordance with paragraph (c)(1) of this section, or on a 
tag attached to each unit by a qualified servicing organization.



Sec. 142.245  Requirements for training crews to respond to fires.

    (a) Drills and instruction. The master of a towing vessel must 
ensure that each crewmember participates in fire-fighting drills and 
receives instruction at least once each month. The instruction may 
coincide with the drills, but is not required to do so. All crewmembers 
must be familiar with their fire-fighting duties, and, specifically how 
to:
    (1) Fight a fire in the engine room and elsewhere onboard the towing 
vessel, including how to:
    (i) Operate all of the fire-extinguishing equipment onboard the 
towing vessel;

[[Page 28]]

    (ii) Stop any mechanical ventilation system for the engine room and 
effectively seal all natural openings to the space to prevent leakage of 
the extinguishing agent; and
    (iii) Operate the fuel shut-off(s) for the engine room.
    (2) Activate the general alarm;
    (3) Report inoperative alarm systems and fire-detection systems; and
    (4) Don a firefighter's outfit and a self-contained breathing 
apparatus, if the vessel is so equipped.
    (b) Alternative form of instruction. Video training, followed by a 
discussion led by someone familiar with the contingencies listed in 
paragraph (a) of this section, is an acceptable, alternative form of 
instruction. This instruction may occur either onboard or off the towing 
vessel.
    (c) Participation in drills. Drills must take place onboard the 
towing vessel as if there were an actual emergency. They must include:
    (1) Participation by all crewmembers;
    (2) Breaking out and using, or simulating the use of, emergency 
equipment;
    (3) Testing of all alarm and detection systems by operation of the 
test switch or by activation of one or more devices;
    (4) Putting on protective clothing by at least one person, if the 
towing vessel is so equipped; and
    (5) Functionally testing the self-priming capability of the portable 
fire pump, if the towing vessel is so equipped.
    (d) Safety orientation. The master must ensure that each crewmember 
who has not participated in the drills required by paragraph (a) of this 
section and received the instruction required by that paragraph (a) 
receives a safety orientation within 24 hours of reporting for duty. The 
safety orientation must cover the particular contingencies listed in 
paragraph (a) of this section.
    Note to Sec. 142.245. See Sec. 140.915 for requirements for keeping 
records of training.



    Subpart C_Fire Extinguishing and Detection Equipment Requirements



Sec. 142.300  Excepted vessels.

    Excepted vessels, as defined in Sec. 136.110 of this subchapter, 
need not comply with the provisions of Secs. 142.315 through 142.330.



Sec. 142.315  Additional fire-extinguishing equipment requirements.

    (a) A towing vessel that is:
    (1) Certificated for rivers, lakes, bays, and sounds, less than 3 
nautical miles from shore on the Great Lakes; or
    (2) Certificated for limited coastwise, coastwise, oceans or waters 
beyond 3 nautical miles from shore on the Great Lakes, whose contract 
for construction was executed prior to August 27, 2003; or
    (3) Pushing a barge ahead or hauling a barge alongside, when the 
barge's coastwise, limited coastwise, or Great Lakes route is 
restricted, as indicated on its COI, so that the barge may operate ``in 
fair weather only, within 12 miles of shore'' or with words to that 
effect, must be equipped with either:
    (i) An approved B-V semi-portable fire-extinguishing system to 
protect the engine room; or
    (ii) A fixed fire-extinguishing system installed to protect the 
engine room.
    (b) A towing vessel that is certificated for limited coastwise, 
coastwise, oceans, or beyond 3 nautical miles from shore on the Great 
Lakes whose contract for construction was executed on or after August 
27, 2003, except for those specified in paragraph (a)(3) of this 
section, must be equipped with both:
    (1) An approved B-V semi-portable fire-extinguishing system to 
protect the engine room; and
    (2) A fixed fire-extinguishing system installed to protect the 
engine room.



Sec. 142.325  Fire pumps, fire mains, and fire hoses.

    Each towing vessel must have either a self-priming, power-driven, 
fixed fire pump, a fire main, and hoses and nozzles in accordance with 
paragraphs (a) through (d) of this section; or a portable pump, and 
hoses and nozzles, in

[[Page 29]]

accordance with paragraphs (e) and (f) of this section.
    (a) A fixed fire pump must be capable of:
    (1) Delivering water simultaneously from the two highest hydrants, 
or from both branches of the fitting if the highest hydrant has a 
Siamese fitting, at a pitot-tube pressure of at least 344 kilopascals 
(kPa) (50 pounds per square inch (psi)), and a flow rate of at least 300 
liters per minute (lpm) (80 gallons per minute (gpm)); and
    (2) Being energized remotely from a safe place outside the engine 
room and at the pump.
    (b) All suction valves necessary for the operation of the fire main 
must be kept in the open position or capable of operation from the same 
place where the remote fire pump control is located.
    (c) The fire main must have a sufficient number of fire hydrants 
with attached hose to allow a stream of water to reach any part of the 
machinery space using a single length of fire hose.
    (d) The hose must be a lined commercial fire hose 15 meters (50 
feet) in length, at least 40 millimeters (1.5 inches) in diameter, and 
fitted with a nozzle made of corrosion-resistant material capable of 
providing a solid stream and a spray pattern.
    (e) The portable fire pump must be self-priming and power-driven, 
with:
    (1) A minimum capacity of at least 300 LPM (80 gpm) at a discharge 
gauge pressure of not less than 414 kPa (60 psi), measured at the pump 
discharge;
    (2) A sufficient amount of lined commercial fire hose 15 meters (50 
feet) in length, at least 40 mm (1.5 inches) in diameter and immediately 
available to attach to it so that a stream of water will reach any part 
of the vessel; and
    (3) A nozzle made of corrosion-resistant material capable of 
providing a solid stream and a spray pattern.
    (f) The pump must be stowed with its hose and nozzle outside of the 
machinery space.



Sec. 142.330  Fire-detection system requirements.

    (a) Fire-detection systems. Except as provided in paragraph (a)(8) 
of this section, each towing vessel must have a fire-detection system 
installed to detect engine room fires. The owner or managing operator 
must ensure the following:
    (1) Each detector, control panel, remote indicator panel, and fire 
alarm are approved by the Commandant under approval series 161.002 or 
listed by a NRTL as set forth in 29 CFR 1910.7;
    (2) The system is installed, tested, and maintained in accordance 
with the manufacturer's design manual;
    (3) The system is arranged and installed so a fire in the engine 
room automatically sets off alarms on a fire detection control panel at 
the operating station. On vessels with more than one operating station, 
only one of them must be outfitted with a fire detection control panel. 
Any other operating station must be outfitted with either a fire 
detection control panel or a remote indicator panel;
    (4) The control panel includes:
    (i) A power available light;
    (ii) An audible to notify crew of a fire;
    (iii) Visual alarm alarms to identify the zone or zones of origin of 
the fire;
    (iv) A means to silence the audible alarm while maintaining 
indication by the visual alarms;
    (v) A circuit-fault detector test-switch, or internal supervision of 
circuit integrity; and
    (vi) Labels for all switches and indicator lights, identifying their 
functions.
    (5) The system draws power from two sources. Switchover from the 
primary source to the secondary source may be either manual or 
automatic;
    (6) The system serves no other purpose, unless it is an engine room 
monitoring system complying with paragraph (a)(8) of this section; and
    (7) The design of the system and its installation on the towing 
vessel is certified and inspected by a registered professional engineer 
with experience in fire-detection system design, by a technician with 
qualifications as a National Institute for Certification in Engineering 
Technologies (NICET) level IV fire alarm engineering technician, or by 
an authorized classification society with equivalent experience, to 
comply with paragraphs (a)(1) through (6) of this section.

[[Page 30]]

    (8) A towing vessel whose construction was contracted for prior to 
January 18, 2000, may use an existing engine room monitoring system 
(with fire-detection capability) instead of a fire-detection system, if 
the monitoring system is operable and complies with paragraphs (a)(2) 
through (7) of this section, and uses detectors listed by an NRTL.
    (b) Smoke detection in berthing spaces. Each towing vessel must be 
equipped with a means to detect smoke in the berthing spaces and lounges 
that alerts individuals in those spaces. This may be accomplished by an 
installed detection system, or by using individual battery-operated 
detectors meeting UL 217 (incorporated by reference, see Sec. 136.112 of 
this subchapter). Detection systems or individual detectors must be kept 
operational at all times when the crew is onboard the towing vessel.
    (c) Heat-detection system in galley. Each new towing vessel equipped 
with a galley must have a heat-detection system with one or more 
restorable heat-sensing detectors to detect fires in the galley. The 
system must be arranged to sound an audible alarm at each operating 
station. This may be a separate zone in the detection system required by 
paragraph (a) of this section, or a separate detection system complying 
with paragraphs (a)(1) and (2) of this section.



PART 143_MACHINERY AND ELECTRICAL SYSTEMS AND EQUIPMENT--Table of Contents



                            Subpart A_General

Sec.
143.100  Purpose.
143.105  Applicability.
143.115  Definitions.

              Subpart B_Requirements for All Towing Vessels

143.200  Applicability.
143.205  General.
143.210  Alternate design or operational considerations.
143.215  Existing vessels built to class.
143.220  Machinery space fire prevention.
143.225  Control and monitoring requirements.
143.230  Alarms and monitoring.
143.235  General alarms.
143.240  Communication requirements.
143.245  Readiness and testing.
143.250  System isolation and markings.
143.255  Fuel system requirements.
143.260  Fuel shutoff requirements.
143.265  Additional fuel system requirements for towing vessels built 
          after January 18, 2000.
143.270  Piping systems and tanks.
143.275  Bilge pumps or other dewatering capability.
143.300  Pressure vessels.
143.400  Electrical systems, general.
143.410  Shipboard lighting.
143.415  Navigation lights.
143.450  Pilothouse alerter system.
143.460  Towing machinery.

              Subpart C_Requirements for New Towing Vessels

143.500  Applicability.
143.510  Verification of compliance with design standards.
143.515  Towing vessels built to recognized classification society 
          rules.
143.520  Towing vessels built to American Boat and Yacht Council 
          standards.
143.540  Pumps, pipes, valves, and fittings for essential systems.
143.545  Pressure vessels.
143.550  Steering systems.
143.555  Electrical power sources, generators, and motors.
143.560  Electrical distribution panels and switchboards.
143.565  Electrical overcurrent protection other than generators and 
          motors.
143.570  Electrical grounding and ground detection.
143.575  Electrical conductors, connections, and equipment.
143.580  Alternative electrical installations.
143.585  General requirements for propulsion, steering, and related 
          controls on vessels that move tank barges carrying oil or 
          hazardous material in bulk.
143.590  Propulsor redundancy on vessels that move tank barges carrying 
          oil or hazardous material in bulk.
143.595  Vessels with one propulsor that move tank barges carrying oil 
          or hazardous material in bulk.
143.600  Alternative standards for vessels that move tank barges 
          carrying oil or hazardous material in bulk.
143.605  Demonstration of compliance on vessels that move tank barges 
          carrying oil or hazardous material in bulk.

    Authority: 46 U.S.C. 3103, 3301, 3306, 3308, 3316, 8104, 8904; 33 
CFR 1.05; DHS Delegation No. 0170.1.

    Source: USCG-2006-24412, 81 FR 40101, June 20, 2016, unless 
otherwise noted.

[[Page 31]]



                            Subpart A_General



Sec. 143.100  Purpose.

    This part contains requirements for the design, installation, and 
operation of primary and auxiliary machinery and electrical systems and 
equipment on towing vessels.



Sec. 143.105  Applicability.

    This part applies to all towing vessels subject to this subchapter. 
The specific applicability of requirements in each subpart is set forth 
in that subpart.



Sec. 143.115  Definitions.

    The definitions provided in Sec. 136.110 of this subchapter apply to 
this part. In addition, the following definition applies exclusively to 
this part:
    Independent means the equipment is arranged to perform its required 
function regardless of the state of operation, or failure, of other 
equipment.



              Subpart B_Requirements for All Towing Vessels



Sec. 143.200  Applicability.

    (a) This subpart applies to all towing vessels subject to this 
subchapter.
    (b) Except as noted paragraph (c) of this section, which lists later 
implementation dates for requirements in Secs. 143.450 and 143.460, an 
existing towing vessel must comply with the applicable requirements in 
this part no later than either July 20, 2018 or the date the vessel 
obtains a Certificate of Inspection (COI), whichever date is earlier. 
The delayed implementation provisions in this section do not apply to a 
new towing vessel.
    (c) Existing vessels must meet the pilothouse alerter and towing 
machinery requirements of Secs. 143.450 and 143.460 no later than 5 
years after the issuance of the first COI for the vessel.



Sec. 143.205  General.

    (a) Machinery and electrical systems must be designed and maintained 
to provide for safe operation of the towing vessel and safety of persons 
onboard under normal and emergency conditions.
    (b) The crew of each towing vessel must demonstrate the ability to 
operate the primary and auxiliary machinery and electrical systems for 
which they are responsible, and to do so under normal and emergency 
conditions. This includes, but is not limited to, responses to alarms 
and restoration of propulsion and steering in the event of failure.
    (c) Propulsion machinery, including main engines, reduction gears, 
shafting, bearings, and electrical equipment and systems, must:
    (1) Be maintained to ensure proper operation;
    (2) Be suitable for route and service; and
    (3) Have suitable propulsion controls to provide the operator full 
control at each operating station.
    (d) Repairs and minor alterations to existing towing vessels must be 
made in accordance with this part. New installations that are not 
replacements in kind must comply with the requirements of subpart C of 
this part, if applicable.



Sec. 143.210  Alternate design or operational considerations.

    (a) Machinery or electrical systems of a novel design, unusual form, 
or special material that cannot be reviewed or approved in accordance 
with this part, may be approved by the Commanding Officer, Marine Safety 
Center. It must be shown by systematic analysis, based on engineering 
principles, that the machinery or electrical equipment or system 
provides an equivalent level of safety. The owner or managing operator 
must submit detailed plans, material component specifications, and 
design criteria, including the expected towing vessel service and 
operating environment, to the Marine Safety Center. Examples of novel 
design include use of liquefied natural gas, compressed natural gas, or 
propane fuel for propulsion, and hybrid, fuel cell, or battery 
propulsion.
    (b) Alternate arrangements or equipment to comply with this part may 
be approved in accordance with Sec. 136.115 of this subchapter.

[[Page 32]]



Sec. 143.215  Existing vessels built to class.

    (a) An existing towing vessel classed by a recognized classification 
society, as appropriate for the intended service and routes, is 
considered in compliance with the machinery and electrical standards of 
this subpart.
    (b) An existing vessel built and equipped to conform to a recognized 
classification society's rules, appropriate for the intended service and 
routes, but not currently classed, may be deemed by the Officer in 
Charge, Marine Inspection (OCMI), or third-party organization (TPO), to 
be in compliance with this part, provided that the towing vessel 
conforms to the class rules.
    (c) Existing vessels meeting either paragraph (a) or (b) of this 
section must also meet the requirements of Secs. 143.245 and 143.450.



Sec. 143.220  Machinery space fire prevention.

    (a) All seals and gaskets must be properly maintained to prevent 
leaks of flammable or combustible liquid, as those terms are defined in 
46 CFR subpart 30.10, into the machinery space.
    (b) Piping and machinery components that exceed 220  deg.C (428 
deg.F), including fittings, flanges, valves, exhaust manifolds, and 
turbochargers, must be insulated. Measures must be in place to prevent 
flammable or combustible liquid piping leaks from coming into contact 
with these components.
    (c) Flammable and combustible products must not be stored in 
machinery spaces, unless they are stored in a suitable container that 
meets the requirements of Sec. 142.225 of this subchapter.



Sec. 143.225  Control and monitoring requirements.

    (a) Each towing vessel must have a means to monitor and control the 
amount of thrust, rudder angle, and (if applicable) direction of thrust, 
at each operating station.
    (b) Each towing vessel equipped with rudder(s) must have a means to 
monitor and control the position of the rudder(s) at each operating 
station.



Sec. 143.230  Alarms and monitoring.

    (a) Each towing vessel must have a reliable means to provide 
notification when an emergency condition exists or an essential system 
develops problems that require attention. The following alarms must be 
provided:
    (1) Main engine low lubricating oil pressure;
    (2) Main engine high cooling water temperature;
    (3) Auxiliary generator engine low lubricating oil pressure;
    (4) Auxiliary generator engine high cooling water temperature;
    (5) High bilge levels;
    (6) Low hydraulic steering fluid levels, if applicable; and
    (7) Low fuel level, if fitted with a day tank.
    (b) Alarms must:
    (1) Be visible and audible at each operating station. The alarm 
located at the operating station may be a summary alarm; if the alarm at 
the operating station is a summary alarm, the specific alarm condition 
must be indicated at the machinery or bilge location;
    (2) Have a means to test actuation at each operating station or have 
a continuous self-monitoring alarm system which actuates if an alarm 
point fails or becomes disabled;
    (3) Continue until they are acknowledged; and
    (4) Not interfere with night vision at the operating station.
    (c) The following systems must be equipped with gauges at the 
machinery location:
    (1) Main engine lubricating oil pressure and main engine RPM;
    (2) Main engine cooling water temperature;
    (3) Auxiliary generator engine lubricating oil pressure and 
auxiliary generator engine RPM;
    (4) Auxiliary generator engine cooling water temperature; and
    (5) Hydraulic steering fluid pressure, if the vessel is equipped 
with hydraulic steering systems.



Sec. 143.235  General alarms.

    (a) This section does not apply to an excepted vessel as defined in 
Sec. 136.110 of this subchapter.
    (b) Each towing vessel must be fitted with a general alarm that:

[[Page 33]]

    (1) Is activated at each operating station and can notify persons 
onboard in the event of an emergency;
    (2) Is capable of notifying persons in any accommodation, work 
space, and the engine room;
    (3) Has installed, in the engine room and any other area where 
background noise makes a general alarm hard to hear, a supplemental 
flashing red light that is identified with a sign that reads: 
``Attention General Alarm--When Alarm Sounds or Flashes Go to Your 
Station''; and
    (4) A public-address (PA) system or other means of alerting all 
persons on the towing vessel may be used in lieu of the general alarm in 
paragraph (b) of this section if the system meets the requirements of 
paragrahs (b)(2) and (3) of this section.



Sec. 143.240  Communication requirements.

    (a) This section does not apply to an excepted towing vessel as 
defined in Sec. 136.110 of this subchapter.
    (b) Each towing vessel must be fitted with a communication system 
between the pilothouse and the engine room that:
    (1) Consists of either fixed or portable equipment, such as a sound-
powered telephone, portable radios, or other reliable method of voice 
communication, with a main or reserve power supply that is independent 
of the towing vessel's electrical system; and
    (2) Provides two-way voice communication and calling between the 
pilothouse and either the engine room or a location immediately adjacent 
to an exit from the engine room.
    (c) Towing vessels with more than one propulsion unit and 
independent pilothouse control for all engines are not required to have 
internal communication systems.
    (d) When the pilothouse engine controls and the access to the engine 
room are within 3 meters (10 feet) of each other and allow unobstructed 
visible contact between them, direct voice communication is acceptable 
instead of a communication system.



Sec. 143.245  Readiness and testing.

    (a) Essential systems or equipment must be regularly tested and 
examined. Tests and examinations must verify that the system or 
equipment functions as designed. If a component is found unsatisfactory, 
it must be repaired or replaced. Test and examination procedures must be 
in accordance with manufacturer's instructions or the Towing Safety 
Management System (TSMS) applicable to the vessel, if the vessel has a 
TSMS.
    (b) Each towing vessel must perform the applicable tests in Table 
143.245(b) of this section. The tests required by this section must be 
recorded in accordance with part 140 of this subchapter.

             Table 143.245(b)--Required Tests and Frequency
------------------------------------------------------------------------
                 Tests of:                           Frequency:
------------------------------------------------------------------------
Propulsion controls; ahead and astern at    Before the vessel gets
 the operating station.                      underway, but no more than
                                             once in any 24 hour period.
Steering controls at the operating station  Before the vessel gets
                                             underway, but no more than
                                             once in any 24 hour period.
Pilothouse alerter system.................  Weekly.
All alternate steering and propulsion       At least once every 3
 controls.                                   months.
Power supply for alarm actuation circuits   At least once every 3
 for alarms required by Sec.  143.230.       months.
Communications required by Sec.  143.240..  Weekly.
General alarm if the vessel is so equipped  Weekly.
Emergency lighting and power if the vessel  At least once every 3
 is so equipped.                             months.
Charge of storage batteries if the vessel   At least once every 3
 is so equipped, for emergency lighting      months.
 and power.
Alarm setpoints...........................  Twice every 5 years, with no
                                             more than 3 years elapsing
                                             since last test.
Pressure vessel relief valves.............  Twice every 5 years, with no
                                             more than 3 years elapsing
                                             since last test.
All other essential systems...............  At least once every 3
                                             months.
------------------------------------------------------------------------



Sec. 143.250  System isolation and markings.

    Electrical equipment, piping for flammable or combustible liquid, 
seawater cooling, or fire-fighting systems must be provided with 
isolation devices and markings as follows:
    (a) Electrical equipment must be provided with circuit isolation and 
must be marked as described in Sec. 143.400.
    (b) Electrical panels or other enclosures containing more than one 
source of power must be fitted with a sign

[[Page 34]]

warning persons of this condition and identifying where to secure all 
sources.
    (c) Piping for flammable or combustible liquid, seawater cooling, or 
firefighting systems must be fitted with isolation valves that are 
clearly marked by labeling or color coding that enables the crew to 
identify its function.
    (d) Any piping system that penetrates the hull below the waterline 
must be fitted with an accessible valve, located as close to the hull 
penetration as is practicable, for preventing the accidental admission 
of water into the vessel either through such pipes or in the event of a 
fracture of such pipe. The valve must be clearly marked by labeling or 
color coding that enables the crew to identify its function.
    (e) Color coding required by this section may be met by complying 
with coding standards contained in the ISO 14726:2008(E) (incorporated 
by reference, see Sec. 136.112 of this subchapter), or in accordance 
with the TSMS applicable to the vessel.



Sec. 143.255  Fuel system requirements.

    (a) Fuel systems for towing vessel main engines and generators must 
have a documented maintenance plan to ensure proper operation of the 
system.
    (b) A continuous supply of clean fuel must be provided to main 
propulsion engines and generators.
    (c) The fuel system must include filters and/or purifiers. Where 
filters are used:
    (1) A supply of spare fuel filters must be provided onboard; and
    (2) Fuel filters must be replaced in accordance with manufacturer's 
requirements or the vessel's TSMS, if applicable.
    (d) Except as otherwise permitted under Sec. 143.210 or 
Sec. 143.520, no fuel other than diesel fuel may be used.



Sec. 143.260  Fuel shutoff requirements.

    (a) This section does not apply to an excepted towing vessel as 
defined in Sec. 136.110 of this subchapter.
    (b) To stop the flow of fuel in the event of a fire or break in the 
fuel line, a remote fuel shutoff valve must be fitted on any fuel line 
that supplies fuel directly to a propulsion engine or generator prime 
mover.
    (c) The valve must be installed in the fuel piping directly outside 
of the fuel oil supply tank.
    (d) The valve must be operable from a safe place outside the space 
where the valve is installed.
    (e) Each remote valve control must be marked in clearly legible 
letters, at least 25 millimeters (1 inch) high, indicating the purpose 
of the valve and the way to operate it.



Sec. 143.265  Additional fuel system requirements for towing vessels
built after January 18, 2000.

    (a) Applicability. This section applies to towing vessels that are 
not excepted vessels, as defined in Sec. 136.110 of this subchapter, and 
that were built after January 18, 2000. Except for outboard engines or 
portable bilge or fire pumps, each fuel system must comply with this 
section.
    (b) Portable fuel systems. The vessel must not incorporate or carry 
portable fuel systems, including portable tanks and related fuel lines 
and accessories, except when used for outboard engines or portable bilge 
or fire pumps. The design, construction, and stowage of portable tanks 
and related fuel lines and accessories must comply with the ABYC H-25 
(incorporated by reference, see Sec. 136.112 of this subchapter).
    (c) Vent pipes for integral fuel tanks. Each integral fuel tank must 
have a vent that connects to the highest point of the tank, discharges 
on a weather deck through a bend of 180 degrees, and is fitted with a 
30-by-30-mesh corrosion-resistant flame screen. Vents from two or more 
fuel tanks may combine in a system that discharges on a weather deck. 
The net cross-sectional area of the vent pipe for the tank must be not 
less than 312.3 square millimeters (0.484 square inches), for any tank 
filled by gravity. The cross-sectional area of the vent pipe, or the sum 
of the vent areas when multiple vents are used, must not be less than 
that of the fill pipe cross-sectional area for any tank filled by pump 
pressure.
    (d) Fuel piping. Except as permitted in paragraphs (d)(1) through 
(3) of this section, each fuel line must be seamless and made of steel, 
annealed copper, nickel-copper, or copper-nickel.

[[Page 35]]

Each fuel line must have a wall thickness no less than 0.9 millimeters 
(0.035 inches) except for the following:
    (1) Aluminum piping is acceptable on an aluminum-hull towing vessel 
if it is at least Schedule 80 in thickness.
    (2) Nonmetallic flexible hose is acceptable if it:
    (i) Is used in lengths of not more than 0.76 meters (30 inches);
    (ii) Is visible and easily accessible;
    (iii) Does not penetrate a watertight bulkhead;
    (iv) Is fabricated with an inner tube and a cover of synthetic 
rubber or other suitable material reinforced with wire braid; and
    (v) Either:
    (A) If designed for use with compression fittings, is fitted with 
suitable, corrosion-resistant, compression fittings, or fittings 
compliant with the SAE J1475 Revised JUN96 (incorporated by reference, 
see Sec. 136.112 of this subchapter); or
    (B) If designed for use with clamps, is installed with two clamps at 
each end of the hose. Clamps must not rely on spring tension and must be 
installed beyond the bead or flare or over the serrations of the mating 
spud, pipe, or hose fitting.
    (3) Nonmetallic flexible hose complying with SAE J1942 Revised 
APR2007 (incorporated by reference, see Sec. 136.112 of this 
subchapter), is also acceptable.
    (e) Alternative standards. A towing vessel of less than 79 feet in 
length may comply with any of the following standards for fuel systems 
instead of those of paragraph (d) in this section:
    (1) ABYC H-33 (incorporated by reference, see Sec. 136.112 of this 
subchapter);
    (2) Chapter 5 of NFPA 302 (incorporated by reference, see 
Sec. 136.112 of this subchapter); or
    (3) 33 CFR chapter I, subchapter S (Boating Safety).



Sec. 143.270  Piping systems and tanks.

    Piping and tanks exposed to the outside of the hull must be made of 
metal and maintained in a leak free condition.



Sec. 143.275  Bilge pumps or other dewatering capability.

    There must be an installed or portable bilge pump for emergency 
dewatering. Any portable pump must have sufficient hose length and 
pumping capability. All installed bilge piping must have a check/foot 
valve in each bilge suction that prevents unintended backflooding 
through bilge piping.



Sec. 143.300  Pressure vessels.

    (a) Pressure vessels over 5 cubic feet in volume and over 15 pounds 
per square inch maximum allowable working pressure (MAWP) must be 
equipped with an indicating pressure gauge (in a readily visible 
location) and with one or more spring-loaded relief valves. The total 
relieving capacity of such relief valves must prevent pressure from 
exceeding the MAWP, as established by the manufacturer, by more than 10 
percent.
    (b) Pressure vessels must be externally examined annually. Relief 
valves must be tested in accordance with Sec. 143.245.
    (c) All pressure vessels must have the MAWP indicated by a stamp, 
nameplate, or other means visible to the crew.
    (d) Pressure vessels installed after July 20, 2018, or the date the 
vessel obtains a Certificate of Inspection (COI), whichever date is 
earlier, must meet the requirements of Sec. 143.545.

[USCG-2006-24412, 81 FR 40101, June 20, 2016; 81 FR 47312, July 21, 
2016]



Sec. 143.400  Electrical systems, general.

    (a) Electrical systems and equipment must function properly and 
minimize system failures and fire and shock hazards.
    (b) Installed electrical power source(s) must be capable of carrying 
the electrical load of the towing vessel under normal operating 
conditions.
    (c) Electrical equipment must be marked with its respective current 
and voltage ratings.
    (d) Individual circuit breakers on switchboards and distribution 
panels must be labeled with a description of the loads they serve.
    (e) Electrical connections must be suitably installed to prevent 
them from coming loose through vibration or accidental contact.

[[Page 36]]

    (f) Electrical equipment and electrical cables must be suitably 
protected from wet and corrosive environments.
    (g) Electrical components that pose an electrical hazard must be in 
an enclosure.
    (h) Electrical conductors passing though watertight bulkheads must 
be installed so that the bulkhead remains watertight.
    (i) The connections of flexible cable plugs and socket outlets must 
be designed to prevent unintended separation.



Sec. 143.410  Shipboard lighting.

    (a) Sufficient lighting suitable for the marine environment must be 
provided within crew working and living areas.
    (b) Emergency lighting must be provided for all internal crew 
working and living areas. Emergency lighting sources must provide for 
sufficient illumination under emergency conditions to facilitate egress 
from each space and must be either:
    (1) Automatic, battery-operated with a duration of no less than 2 
hours; or
    (2) Non-electric, phosphorescent adhesive lighting strips that are 
installed along escape routes and sufficiently visible to enable egress 
with no power.
    (c) Each towing vessel must be equipped with at least two portable, 
battery-powered lights. One must be located in the pilothouse and the 
other at the access to the engine room.



Sec. 143.415  Navigation lights.

    (a) Towing vessels more than 65 feet in length must use navigation 
lights that meet UL 1104 (incorporated by reference, see Sec. 136.112 of 
this subchapter) or other standards accepted by the Coast Guard.
    (b) Towing vessels 65 feet or less in length may meet the 
requirements listed in 33 CFR 183.810 or paragraph (a) of this section.



Sec. 143.450  Pilothouse alerter system.

    (a) Except as provided in paragraph (d) or (e) of this section, a 
towing vessel with overnight accommodations and alternating watches 
(shift work), when pulling, pushing or hauling alongside one or more 
barges, must have a system to detect when its master or mate (pilot) 
becomes incapacitated. The system must:
    (1) Have an alarm in the pilothouse distinct from any other alarm;
    (2) Require action from the master or officer in charge of a 
navigational watch, during an interval not to exceed 10 minutes, in 
order to reset the alarm timer; and
    (3) Immediately (within 30 seconds) notify another crewmember if the 
pilothouse alarm is not acknowledged.
    (b) The time interval for the system alarm must be adjustable. The 
time may be adjusted by the owner or managing operator but must not be 
in excess of 10 minutes. This time interval, and information on alerter 
operation, must be provided on board and specified in the vessel's TSMS 
if applicable.
    (c) The system alarm may be reset physically (e.g. a push button), 
or the reset may be accomplished by a link to other pilothouse action 
such as rudder or throttle control movement, or motion detection of 
personnel.
    (d) A towing vessel need not comply with this section if a second 
person is provided in the pilothouse.
    (e) Towing vessels 65 feet or less in length are not required to 
have a pilothouse alerter system.



Sec. 143.460  Towing machinery.

    (a) Towing machinery such as capstans, winches, and other mechanical 
devices used to connect the towing vessel to the tow must be designed 
and installed to maximize control of the tow.
    (b) Towing machinery for towing astern must have sufficient 
safeguards, e.g., towing bitt with crossbar, to prevent the machinery 
from becoming disabled in the event the tow becomes out of line.
    (c) Towing machinery used to connect the towing vessel to the tow 
must be suitable for its intended service. It must be capable of 
withstanding exposure to the marine environment, likely mechanical 
damage, static and dynamic loads expected during intended service, the 
towing vessel's horsepower, and arrangement of the tow.
    (d) When a winch that has the potential for uncontrolled release 
under tension is used, a warning must be in place at the winch controls 
that indicates

[[Page 37]]

this. When safeguards designed to prevent uncontrolled release are 
utilized, they must not be disabled.
    (e) Each owner or managing operator must develop procedures to 
routinely examine, maintain, and replace capstans, winches, and other 
machinery used to connect the towing vessel to the tow.



              Subpart C_Requirements for New Towing Vessels



Sec. 143.500  Applicability.

    (a) This subpart applies to a new towing vessel, as defined in 
Sec. 136.110 of this subchapter, unless it is an excepted vessel.
    (b) Machinery or electrical systems of a novel design, unusual form, 
or special material must meet section Sec. 143.210.
    (c) Unless otherwise noted in Secs. 143.515 and 143.520, new towing 
vessels must also meet the requirements of subpart B of this part.



Sec. 143.510  Verification of compliance with design standards.

    Verification of compliance with the machinery and electrical design 
standards in this subpart is obtained by following the provisions in 
Secs. 144.135 through 144.145 of this subchapter.



Sec. 143.515  Towing vessels built to recognized classification society
rules.

    (a) Except as noted in paragraph (c) of this section, a towing 
vessel classed by the American Bureau of Shipping (ABS), in accordance 
with the ABS Rules for Building and Classing Steel Vessels Under 90 
Meters (295 Feet) in Length, or the ABS Rules for Building and Classing 
Steel Vessels for Service on Rivers and Intracoastal Waterways 
(incorporated by reference, see Sec. 136.112 of this subchapter), as 
appropriate for the intended service and routes, complies with this 
subpart.
    (b) Except as noted in paragraph (c) of this section, a towing 
vessel built and equipped to conform to the ABS rules specified in 
paragraph (a) of this section and appropriate for the intended service 
and routes, but not currently classed, may be deemed by the OCMI or a 
TPO to be in compliance with this subpart if it can be shown that the 
vessel continues to conform to the ABS rules.
    (c) A vessel that complies with this subpart as described in 
paragraph (a) or (b) must also meet the requirements described in 
Secs. 143.585 through 143.595 or the requirements of Sec. 143.600 if it 
moves tank barges carrying oil or hazardous material in bulk.
    (d) Vessels meeting either paragraph (a) or (b) of this section are 
considered as being in compliance with subpart B of this part except for 
the readiness and testing requirements of Sec. 143.245, and pilothouse 
alerter requirements of Sec. 143.450.
    (e) Towing vessels built to other recognized classification society 
rules, appropriate for the intended route and service, may be considered 
compliant with provisions in this subpart upon approval by the Coast 
Guard.



Sec. 143.520  Towing vessels built to American Boat and Yacht Council
standards.

    (a) Except as noted in paragraphs (b) and (c) of this section, a new 
towing vessel 65 feet (19.8 meters) or less in length built to conform 
with the American Boat and Yacht Council (ABYC) standards listed in this 
paragraph (a) (incorporated by reference, see Sec. 136.112 of this 
subchapter), complies with this subpart:
    (1) E-11 (2003)--AC & DC Electrical Systems on Boats;
    (2) H-2 (2002)--Ventilation of Boats Using Gasoline;
    (2) H-22 (2005)--Electric Bilge Pump Systems;
    (3) H-24 (2007)--Gasoline Fuel Systems;
    (4) H-25 (2003)--Portable Gasoline Fuel Systems;
    (5) H-32 (2004)--Ventilation of Boats Using Diesel Fuel;
    (6) H-33 (2005)--Diesel Fuel Systems;
    (7) P-1 (2002)--Installation of Exhaust Systems for Propulsion and 
Auxiliary Engines; and
    (8) P-4 (2004)--Marine Inboard Engines and Transmissions.
    (b) New towing vessels, 65 feet or less in length, built to the ABYC 
standards specified in this section are considered compliant with 
subpart B of this part except for the readiness and testing requirements 
of Sec. 143.245.

[[Page 38]]

    (c) If the vessel moves tank barges carrying oil or hazardous 
material in bulk, it must meet either the requirements described in 
Secs. 143.585 through 143.595 or the requirements described in 
Sec. 143.600.



Sec. 143.540  Pumps, pipes, valves, and fittings for essential systems.

    (a) Pumps, pipes, valves, and fittings in essential systems on 
vessels must meet ABS Rules for Building and Classing Steel Vessels 
Under 90 Meters (295 Feet) in Length (incorporated by reference, see 
Sec. 136.112 of this subchapter), Part 4, Chapter 4.
    (b) Pumps, pipes, valves, and fittings in essential systems on 
towing vessels operating exclusively on rivers or intracoastal waterways 
may meet ABS Rules for Building and Classing Steel Vessels for Service 
on Rivers and Intracoastal Waterways (incorporated by reference, see 
Sec. 136.112 of this subchapter), Part 4, Chapter 3.



Sec. 143.545  Pressure vessels.

    (a) In lieu of meeting the requirements of Sec. 143.300, pressure 
vessels installed on new towing vessels must meet the requirements of 
this section.
    (b) Pressure vessels over 5 cubic feet in volume and more than 15 
psi maximum allowable working pressure must meet ABS Rules for Building 
and Classing Steel Vessels under 90 Meters (295 Feet) in Length 
(incorporated by reference, see Sec. 136.112 of this subchapter), Part 
4, Chapter 1, Section 1.



Sec. 143.550  Steering systems.

    (a) Steering systems must meet ABS Rules for Building and Classing 
Steel Vessels under 90 Meters (295 Feet) in Length (incorporated by 
reference, see Sec. 136.112 of this subchapter), Part 4, Chapter 3, 
Section 3.
    (b) Steering systems on new towing vessels operating exclusively on 
rivers or intracoastal waterways may meet ABS Rules for Building and 
Classing Steel Vessels for Service on Rivers and Intracoastal Waterways 
(incorporated by reference, see Sec. 136.112 of this subchapter), Part 
4, Chapter 2, Section 3.



Sec. 143.555  Electrical power sources, generators, and motors.

    (a) General requirements. (1) There must be a source of electrical 
power sufficient for:
    (i) All essential systems as defined by Sec. 136.110 of this 
subchapter;
    (ii) Minimum conditions of habitability; and
    (iii) Other installed or portable systems and equipment.
    (2) Generators and motors must be suitably rated for the environment 
where they operate, marked with their respective ratings, and suitably 
protected against overcurrent.
    (3) A towing vessel, other than an excepted vessel, must have a 
backup or a second power source that has adequate capacity to supply 
power to essential alarms, lighting, radios, navigation equipment, and 
any other essential system identified by the cognizant OCMI or a TPO.
    (b) Specific requirements. (1) The owner or managing operator must 
complete a load analysis that shows that the electrical power source is 
sufficient to power the sum of connected loads described in paragraph 
(a)(1) of this section utilizing an appropriate load factor for each 
load. A record of the analysis must be retained by the owner or managing 
operator.
    (2) Installed generators and motors must have a data plate listing 
rated kilowatts and power factor (or current), voltage, and rated 
ambient temperature.
    (3) Generators must be provided with overcurrent protection no 
greater than 115 percent of their rated current and utilize a 
switchboard or distribution panel.
    (4) Motors must be provided with overcurrent protection that meets 
Parts I through VII, Article 430 of NFPA's National Electrical Code 
(NEC) (incorporated by reference, see Sec. 136.112 of this subchapter). 
Steering motor circuits must be protected as per Part 4 Chapter 6 
Section 2, Regulation 11 (except 11.7) ofABS Rules for Building and 
Classing Steel Vessels Under 90 Meters (295 feet) in Length 
(incorporated by reference, see Sec. 136.112 of this subchapter).
    (5) Generators and motors installed in machinery spaces must be 
certified

[[Page 39]]

to operate in an ambient temperature of 50  deg.C or be derated, or it 
can be shown that 40  deg.C ambient temperature will not be exceeded in 
these spaces.
    (6) Each generator and motor, except a submersible-pump motor, must 
be in an accessible space which is adequately ventilated and as dry as 
practicable, and must be mounted above the bilges.
    (7) A generator driven by a main propulsion unit (such as a shaft 
generator) may be considered one of the power sources required by 
paragraph (a) of this section.
    (8) Other than excepted vessels, each towing vessel must be arranged 
so that the following essential loads can be energized from two 
independent sources of electricity:
    (i) High bilge level alarm required by Sec. 143.230;
    (ii) Emergency egress lighting, unless the requirements of 
Sec. 143.410(b)(1) or (2) are met;
    (iii) Navigation lights;
    (iv) Pilothouse lighting;
    (v) Engine room lighting;
    (vi) Any installed radios and navigation equipment as required by 
Secs. 140.715 and 140.725;
    (vii) All distress alerting communications equipment listed in 
Secs. 140.715 and 140.725;
    (viii) Any installed fire detection system; and
    (ix) Any essential system identified by the cognizant OCMI or TPO, 
if applicable.
    (9) If a battery is used as the second source of electricity 
required by paragraph (b)(8) of this section, it must be capable of 
supplying the loads for at least three hours. There must be a means to 
monitor the condition of the battery backup power source.



Sec. 143.560  Electrical distribution panels and switchboards.

    (a) Each distribution panel or switchboard on a towing vessel must 
be:
    (1) In a location that is accessible, as dry as practicable, 
adequately ventilated, and protected from falling debris and dripping or 
splashing water; and
    (2) Totally enclosed and of the dead-front type.
    (b) Each switchboard accessible from the rear must be constructed to 
prevent a person's accidental contact with energized parts.
    (c) Nonconductive mats or grating must be provided on the deck in 
front of each switchboard and, if it is accessible from the rear, on the 
deck behind the switchboard.
    (d) Each un-insulated current-carrying part must be mounted on 
noncombustible, nonabsorbent, and high-dielectric insulating material.
    (e) Equipment mounted on a door of an enclosure must be constructed 
or shielded so that a person will not come into accidental contact with 
energized parts.



Sec. 143.565  Electrical overcurrent protection other than generators
and motors.

    (a) General requirement. Power and lighting circuits on towing 
vessels must be protected by suitable overcurrent protection.
    (b) Specific requirements. (1) Cable and wiring used in power and 
lighting circuits must have overcurrent protection that opens the 
circuit at the standard setting closest to 80 percent of the 
manufacturer's listed ampacity. Overcurrent protection setting 
exceptions allowed by NFPA's National Electrical Code (NEC), Article 240 
(incorporated by reference, see Sec. 136.112 of this subchapter) may be 
employed.
    (2) If the manufacturer's listed ampacity is not known, tables 
referenced in Article 310.15(B) of the NEC (incorporated by reference, 
see Sec. 136.112 of this subchapter) must be used, assuming a 
temperature rating of 75  deg.C and an assumed temperature of 50  deg.C 
for machinery spaces and 40  deg.C for other spaces.
    (3) Overcurrent protection devices must be installed in a manner 
that will not open the path to ground in a circuit; only ungrounded 
conductors must be protected. Overcurrent protection must be coordinated 
such that an overcurrent situation is cleared by the circuit breaker or 
fuse nearest to the fault.
    (4) Each transformer must have protection against overcurrent that 
meets Article 450 of the NEC (incorporated by reference, see 
Sec. 136.112 of this subchapter).

[[Page 40]]

    (5) On a towing vessel, other than an excepted vessel as defined in 
Sec. 136.110 of this subchapter, essential systems and non-essential 
systems must not be on the same circuit or share the same overcurrent 
protective device.



Sec. 143.570  Electrical grounding and ground detection.

    (a) An ungrounded distribution system must be provided with a ground 
detection system located at the main switchboard or distribution panel 
that provides continuous indication of circuit status to ground, with a 
provision to temporarily remove the indicating device from the reference 
ground.
    (b) A dual voltage or grounded electrical distribution system must 
have the neutral suitably grounded. There must be only one connection to 
ground, regardless of the number of power sources. This connection must 
be at the main switchboard or distribution panel.
    (c) On a metallic towing vessel, a grounded distribution system must 
be grounded to the hull. This grounded system must be connected to a 
common, non-aluminum ground plate. The ground plate must have only one 
connection to the main switchboard or distribution panel, and the 
connection must be readily accessible for examination.
    (d) On a nonmetallic towing vessel, all electrical equipment must be 
grounded to a common ground. Multiple ground plates bonded together are 
acceptable.
    (e) Each grounding conductor of a cable must be identified by one of 
the following means:
    (1) Green braid or green insulation; or
    (2) Stripping the insulation from the entire exposed length of the 
grounding conductor.
    (f) A towing vessel's hull may not carry current as a conductor, 
except for an impressed-current cathodic-protection system or a battery 
system used to start an engine.
    (g) Cable armor may not be used to ground electrical equipment or 
systems.
    (h) Each receptacle outlet and attachment plug for a portable lamp, 
tool, or similar apparatus operating at 100 or more volts must have a 
grounding pole and a grounding conductor in the portable cord.
    (i) In a grounded distribution system, only grounded, three-prong 
appliances may be used. This does not apply to double-insulated 
appliances or tools and appliances of 50 volts or less.



Sec. 143.575  Electrical conductors, connections, and equipment.

    (a) Each cable and wire on a towing vessel must be installed to meet 
the following requirements:
    (1) Each conductor must have sufficient current-carrying capacity 
for the circuit in which it is used.
    (2) Cable hangers for overhead and vertical cable runs must be 
installed with metal supports and retention devices at least every 48 
inches.
    (3) Each wire and cable run must be installed in a manner to prevent 
contact with personnel, mechanical hazards, and leaking fluids. Wire and 
cable runs must not be installed in bilges, across a normal walking 
path, or less than 24 inches from the path of movable machinery (e.g., 
cranes, elevators, forktrucks, etc., where the machinery location can 
change) unless adequately protected.
    (4) Connections and terminations must be suitable for the installed 
conductors, and must retain the original electrical, mechanical, flame-
retarding, and where necessary, fire-resisting properties of the 
conductor. If twist-on types of connectors are used, the connections 
must be made within an enclosure and the insulated cap of the connector 
must be secured to prevent loosening due to vibration. Twist-on type of 
connectors may not be used for making joints in cables, facilitating a 
conductor splice, or extending the length of a circuit.
    (5) Each cable and wire must be installed so as to avoid or reduce 
interference with radio reception and compass indication.
    (6) Each cable and wire must be protected from the weather.
    (7) Each cable and wire must be supported in order to avoid chafing 
or other damage.
    (8) Each cable and wire must be protected by metal coverings or 
other

[[Page 41]]

suitable means, if in areas subject to mechanical abuse.
    (9) Each cable and wire must be suitable for low temperature and 
high humidity, if installed in refrigerated compartments.
    (10) Each cable and wire must be located outside a tank, unless it 
supplies power to equipment in the tank.
    (11) If wire is installed in a tank, it must have sheathing or wire 
insulation compatible with the fluid in a tank.
    (b) Extension cords must not be used as a permanent connection to a 
source of electrical power.
    (c) Multi-outlet adapters (power strips) may not be connected to 
other adapters (``daisy-chained''), or otherwise used in a manner that 
could overload the capacity of a receptacle.



Sec. 143.580  Alternative electrical installations.

    In lieu of meeting the requirements of Secs. 143.555 through 
143.575, a vessel may meet the following:
    (a) ABS Rules for Building and Classing Steel Vessels Under 90 
Meters (295 Feet) in Length (incorporated by reference, see Sec. 136.112 
of this subchapter), Part 4, Chapter 6; or
    (b) ABS Rules for Building and Classing Steel Vessels for Service on 
Rivers and Intracoastal Waterways (incorporated by reference, see 
Sec. 136.112 of this subchapter), Part 4, Chapter 5, if they operate 
exclusively on rivers or intracoastal waterways.



Sec. 143.585  General requirements for propulsion, steering, and related
controls on vessels that move tank barges carrying oil or hazardous
material in bulk.

    (a) There must be an alternate means to control the propulsion and 
steering system which must:
    (1) Be independent of the primary control required by Sec. 143.225;
    (2) Be located at or near the propulsion and steering equipment; and
    (3) Be readily accessible and suitable for prolonged operation.
    (b) There must be a means to communicate between each operating 
station and the alternate propulsion and steering controls.
    (c) There must be a means to stop each propulsion engine and 
steering motor from each operating station.
    (d) The means to monitor the amount of thrust, rudder angle, and if 
applicable, direction (ahead or astern) of thrust must be independent of 
the controls required by Sec. 143.225.
    (e) The propulsion control system required by Sec. 143.225 must be 
designed so that, in the event of a single failure of any component of 
the system, propeller speed and direction of thrust are maintained or 
reduced to zero.
    (f) On a towing vessel with an integrated steering and propulsion 
system, such as a Z-drive, the control system required by Sec. 143.225 
must be designed so that, in the event of a single failure of any 
component of the system, propeller speed and direction of thrust are 
maintained or the propeller speed is reduced to zero.
    (g) An audible and visual alarm must actuate at each operating 
station when:
    (1) The propulsion control system fails;
    (2) A non-follow up steering control system fails, if installed; and
    (3) The ordered rudder angle does not match the actual rudder 
position on a follow-up steering control system, if installed. This 
alarm must have an appropriate delay and error tolerance to eliminate 
nuisance alarms.
    (h) Alarms must be separate and independent of the control system 
required by Sec. 143.225.
    (i) A means of communication must be provided between each operating 
station and any crewmember(s) required to respond to alarms.
    (j) The two sources of electricity required by Sec. 143.555(a)(3) 
and (b)(8) must be capable of powering electrical loads needed to 
maintain propulsion, steering, and related controls for not less than 3 
hours.
    (k) The second source of supply required by Sec. 143.555(a)(3) must 
automatically start to help restore or maintain power to propulsion, 
steering, and related controls when the main power source fails.
    (l) Propulsion, steering, or related controls that are directly 
reliant on stored energy, such as compressed air, battery power, or 
hydraulic pressure, must have two independent stored energy systems, 
such as compressed air cylinders, battery banks, or hydraulic

[[Page 42]]

cylinders, that are capable of maintaining the vessel's propulsion, 
steering, and related controls.
    (m) After a power failure, electrical motors used to maintain 
propulsion and steering must automatically restart when power is 
restored, unless remote control starting is provided at the operating 
station.



Sec. 143.590  Propulsor redundancy on vessels that move tank barges
carrying oil or hazardous material in bulk.

    (a) A towing vessel must be provided with at least two independent 
propulsors unless the requirements of Sec. 143.595 are met.
    (b) There must be independent controls for each propulsor at each 
operating station.
    (c) In the event of a failure of a single propulsor, the remaining 
propulsor(s) must have sufficient power to maneuver the vessel to a safe 
location.



Sec. 143.595  Vessels with one propulsor that move tank barges carrying
oil or hazardous material in bulk.

    (a) A towing vessel must have independent, duplicate vital 
auxiliaries. For the purpose of this section, vital auxiliaries are the 
equipment necessary to operate the propulsion engine, and include fuel 
pumps, lubricating oil pumps, and cooling water pumps. In the event of a 
failure or malfunction of any single vital auxiliary, the propulsion 
engine must continue to provide propulsion adequate to maintain control 
of the tow.
    (b) In the event of a failure, the corresponding independent 
duplicate vital auxiliary, described in paragraph (a) of this section, 
must be fully capable of assuming the operation of the failed unit.



Sec. 143.600  Alternative standards for vessels that move tank barges
carrying oil or hazardous material in bulk.

    In lieu of meeting Secs. 143.585 through 143.595, a towing vessel 
may comply with Sections 7-5 (class ABCU) and 3-5 (class R2) of Part 4 
of the ABS Rules for Building and Classing Steel Vessels Under 90 Meters 
(295 Feet) in Length (incorporated by reference, see Sec. 136.112 of 
this subchapter), except that a vessel that operates exclusively on 
rivers or intracoastal waterways does not need to comply with 4-7-4/3.9 
and the automatic day tank fill pump requirement of 4-7-4/25.3.



Sec. 143.605  Demonstration of compliance on vessels that move tank
barges carrying oil or hazardous material in bulk.

    (a) The owner or managing operator of each towing vessel must devise 
test procedures that demonstrate compliance with the design and 
engineering requirements prescribed in this subpart.
    (b) The tests required in paragraph (a) of this section must be 
satisfactorily conducted and witnessed by the cognizant OCMI or a TPO. A 
record of the tests must be retained by the owner or managing operator 
and be available upon request of the cognizant OCMI or TPO.



PART 144_CONSTRUCTION AND ARRANGEMENT--Table of Contents



                            Subpart A_General

Sec.
144.100  Purpose.
144.105  Applicability and delayed implementation.
144.120  A classed vessel.
144.125  A vessel with a load line.
144.130  A vessel built to the International Convention for the Safety 
          of Life at Sea, 1974, as amended, requirements.
144.135  Verification of compliance with design standards.
144.140  Qualifications.
144.145  Procedures for verification of compliance with design 
          standards.
144.155  Verification of compliance with design standards for a sister 
          vessel.
144.160  Marking.

                           Subpart B_Structure

144.200  Structural standards for an existing vessel.
144.205  Structural standards for a new vessel.
144.215  Special consideration.

              Subpart C_Stability and Watertight Integrity

144.300  Stability standards for an existing vessel.
144.305  Stability standards for a new vessel.
144.310  Lifting requirements for a new vessel.

[[Page 43]]

144.315  Weight and moment history requirements for a vessel with 
          approved lightweight characteristics.
144.320  Watertight or weathertight integrity.
144.330  Review of a vessel's watertight and weathertight integrity.

                        Subpart D_Fire Protection

144.400  Applicability.
144.405  Fire hazards to be minimized.
144.410  Separation of machinery and fuel tank spaces from accommodation 
          spaces.
144.415  Combustibles insulated from heated surfaces.
144.425  Waste receptacles.
144.430  Mattresses.

                       Subpart E_Emergency Escape

144.500  Means of escape.
144.505  Location of escapes.
144.510  Window as a means of escape.
144.515  One means of escape required.

                          Subpart F_Ventilation

144.600  Ventilation for accommodations.
144.605  Means to stop fans and close openings.
144.610  Ventilation in a vessel more than 65 feet in length.

                          Subpart G_Crew Spaces

144.700  General requirements.
144.710  Overnight accommodations.
144.720  Crew rest consideration.

                       Subpart H_Rails and Guards

144.800  Handrails and bulwarks.
144.810  Storm rails.
144.820  Guards in dangerous places.
144.830  Protection against hot piping.

                          Subpart I_Visibility

144.905  Operating station visibility.
144.920  Window or portlight strength in a new vessel.

    Authority: 46 U.S.C. 3103, 3301, 3306, 3308, 3316, 8104, 8904; 33 
CFR 1.05; DHS Delegation No. 0170.1.

    Source: USCG-2006-24412, 81 FR 40101, June 20, 2016, unless 
otherwise noted.



                            Subpart A_General



Sec. 144.100  Purpose.

    This part details the requirements for design, construction and 
arrangement, and verification of compliance with this part, including 
document review.



Sec. 144.105  Applicability and delayed implementation.

    This part applies to each towing vessel subject to this subchapter. 
Note that Secs. 144.200 and 144.300 only apply to an existing vessel and 
that the following sections only apply to a new vessel: Secs. 144.205, 
144.305, 144.310, 144.405, 144.410, 144.420, 144.425, 144.430, 144.910, 
and 144.920.
    (a) An existing towing vessel must comply with Sec. 144.320 starting 
July 20, 2016 and it must comply with the other applicable requirements 
in this part no later than either July 20, 2018 or the date the vessel 
obtains a Certificate of Inspection (COI), whichever date is earlier.
    (b) The delayed implementation provisions in paragraph (a) of this 
section do not apply to a new towing vessel.
    (c) Alterations or modifications made to the structure or 
arrangements of an existing vessel that are a major conversion, made on 
or after the July 20, 2017, must comply with the regulations applied to 
a new towing vessel of this part insofar as is reasonable and 
practicable. Repairs conducted on an existing vessel, resulting in no 
significant changes to the original structure or arrangement of the 
vessel, must comply with the standards applicable to the vessel at the 
time of construction or, as an alternative, with the regulations in this 
part.

[USCG-2006-24412, 81 FR 40101, June 20, 2016; 81 FR 47312, July 21, 
2016]



Sec. 144.120  A classed vessel.

    A vessel currently classed by a recognized classification society is 
deemed to be in compliance with the requirements of subparts B and C of 
this part.



Sec. 144.125  A vessel with a load line.

    A vessel with a valid load line certificate issued in accordance 
with subchapter E of this chapter may be deemed in compliance with the 
requirements of subparts B and C of this part.



Sec. 144.130  A vessel built to the International Convention for the
Safety of Life at Sea, 1974, as amended, requirements.

    A vessel built to the International Convention for the Safety of 
Life at

[[Page 44]]

Sea, 1974, as amended, is considered to be in compliance with this part.



Sec. 144.135  Verification of compliance with design standards.

    Verification of compliance with the construction and arrangement 
design standards of this part must be performed according to the 
following table:

     Table 144.135--Verification of Compliance With Design Standards
------------------------------------------------------------------------
                                                 Then the applicable
            If the vessel is--               requirements must be met--
------------------------------------------------------------------------
(a) A new vessel,.........................  Before the COI is issued.
(b) A vessel to undergo a major conversion  Before the major conversion
 or alteration to the hull, machinery, or    or alteration is performed.
 equipment that may affect the vessel's
 safety,
(c) A vessel on which a new installation    Before the new installation
 that is not a ``replacement in kind'',      is performed.
------------------------------------------------------------------------


[USCG-2006-24412, 81 FR 40101, June 20, 2016; 81 FR 47312, July 21, 
2016]



Sec. 144.140  Qualifications.

    Use the following table to determine the individual or entity that 
may conduct a verification of compliance with design standards required 
by Sec. 144.135.

                              Table 144.140
------------------------------------------------------------------------
  Verification of compliance with design
      standards may be performed by--              Provided that--
------------------------------------------------------------------------
(a) A registered professional engineer      The PE ensures he or she
 (P.E.) licensed by one of the states of     does not exceed the scope
 the United States or the District of        of his or her P.E. license.
 Columbia;
(b) An authorized classification society    The authorized
 that has been delegated the authority to    classification society
 issue the SOLAS Cargo Ship Safety           ensures that the employees
 Construction Certificate under 46 CFR       that perform the
 8.320;                                      verification of compliance
                                             holds proper qualifications
                                             for the type of
                                             verification performed.
(c) The Coast Guard.......................  ............................
------------------------------------------------------------------------



Sec. 144.145  Procedures for verification of compliance with design
standards.

    (a) Verification of compliance with design standards, when required 
by Sec. 144.135, must be performed by an individual or entity who meets 
the requirements of Sec. 144.140.
    (b) Verification of compliance with design standards must be based 
on objective evidence of compliance with the applicable requirements and 
include:
    (1) A description of the vessel's intended service and route;
    (2) The standards used for the vessel's design and construction;
    (3) Deviations from the standards used, if any;
    (4) A statement that the vessel is suitable for the intended service 
and route; and
    (5) The identification of the individual or entity in Table 144.140 
of Sec. 144.140 who conducted the verification of compliance.
    (c) Verification of compliance with design standards must include 
review and analyses of sufficient plans, drawings, schematics, 
calculations, and other documents to ensure the vessel complies with the 
standards used. The plans must be stamped with the seal authorized for 
use by the individual or entity performing the verification of 
compliance, or otherwise indicate that they have been reviewed and 
determined to meet the applicable standards by an individual or entity 
who meets the requirements of Sec. 144.140.
    (d) A copy of the verified plan must be provided to the cognizant 
Officer in Charge, Marine Inspection (OCMI) and the third-party 
organization (TPO) conducting the surveys, if applicable, except as 
provided in paragraph (e) of this section.
    (e) Plans verified by an authorized classification society need only 
be provided to the Coast Guard upon request.
    (f) If the vessel is a new vessel, a copy of the verified plan must 
be available at the construction site.
    (g) As referred to in this section, the term plan may include, but 
is not limited to drawings, documents, or diagrams of the following:
    (1) Outboard profile.
    (2) Inboard profile.
    (3) Arrangement of decks.
    (4) Midship section and scantling plans.
    (5) Survival craft embarkation stations.
    (6) Machinery installation, including, but not limited to:
    (i) Propulsion and propulsion control, including shaft details;

[[Page 45]]

    (ii) Steering and steering control, including rudder details;
    (iii) Ventilation diagrams;
    (iv) Fuel transfer and service system, including tanks;
    (v) Piping systems including: bilge, ballast, hydraulic, combustible 
and flammable liquids, vents, and overflows; and
    (vi) Hull penetrations and shell connections;
    (7) Electrical installation including, but not limited to:
    (i) Elementary one-line diagram of the power system;
    (ii) Cable lists;
    (iii) Type and size of generators and prime movers;
    (iv) Type and size of generator cables, bus-tie cables, feeders, and 
branch circuit cables;
    (v) Power and lighting panelboards with number of circuits and 
rating of energy consuming devices;
    (vi) Capacity of storage batteries;
    (vii) Rating of circuit breakers and switches, interrupting capacity 
of circuit breakers, and rating and setting of overcurrent devices; and
    (viii) Electrical plant load analysis as required by Sec. 143.555 of 
this subchapter.
    (8) Lifesaving equipment locations and installation;
    (9) Fire protection equipment installation including, but not 
limited to:
    (i) Fire main system plans and calculations;
    (ii) Fixed gas fire extinguishing system plans and calculations;
    (iii) Fire detecting system and smoke detecting system plans;
    (iv) Sprinkler system diagram and calculations; and
    (v) Portable fire extinguisher types, sizes, and locations;
    (10) Lines and offsets, curves of form, cross curves of stability, 
tank capacities including size and location on vessel, and other 
stability documents needed to show compliance; and
    (11) Towing arrangements.



Sec. 144.155  Verification of compliance with design standards for a
sister vessel.

    (a) Verification of compliance required by Sec. 144.135 is not 
required for a sister vessel, provided that:
    (1) The original vessel has been verified as complying with this 
part;
    (2) The owner authorizes the use of the plans for the original 
vessels for the new construction of the sister vessel;
    (3) The standards used in the design and construction of the 
original vessel have not changed since the original verification of 
compliance;
    (4) The sister vessel is built to the same verified plans, drawings, 
schematics, calculations, and other documents and equipped with 
machinery of the same make and model as the original vessel, and has not 
been subsequently modified;
    (5) The sister vessel is built in the same shipyard facility as the 
original vessel; and
    (6) For a sister vessel subject to a stability standard, that the 
conditions in Table 144.155 of this section are met:

                              Table 144.155
------------------------------------------------------------------------
                   If--                                Then--
------------------------------------------------------------------------
(i) The delivery date of the sister vessel  The approved lightweight
 is not more than 2 years after a previous   characteristics of that
 stability test date of either the           earlier vessel are adopted
 original vessel or an earlier sister        by the sister vessel;
 vessel,
(ii) Paragraph (a)(6)(i) of this section    The vertical center of
 does not apply, and the lightweight         gravity (VCG) of the
 characteristics determined from a           earlier vessel is adopted
 deadweight survey of the sister vessel      by the sister vessel and
 are shown to meet both the following        used with the lightweight
 criteria:                                   displacement and LCG
 (A) the lightweight displacement differs    determined from the
 by not more than 3 percent of the earlier   deadweight survey of the
 vessel's lightweight displacement, and      sister vessel;
 (B) the longitudinal center of gravity
 (LCG) differs by not more than 1 percent
 of the length between perpendiculars
 (LBP) of the earlier vessel's LCG,
(iii) Neither paragraph (a)(6)(i) nor (ii)  The vessel must undergo a
 of this section apply because both the      stability test in
 criteria in paragraphs (a)(6)(ii)(A) and    accordance with 46 CFR part
 (B) of this section are not met and         170, subpart F;
 lightweight characteristics were
 determined from a stability test on
 either the original vessel or a sister
 vessel,
(iv) No vessel of the class of sister       One vessel of the class must
 vessels previously underwent a stability    undergo a stability test in
 test,                                       accordance with 46 CFR part
                                             170, subpart F, and each
                                             sister vessel to which a
                                             stability standard applies
                                             must meet either paragraph
                                             (a)(6)(ii) or (iii) of this
                                             section.
------------------------------------------------------------------------


[[Page 46]]

    (b) A statement that verifies sister vessel status for each element 
of paragraph (a) of this section from an individual or entity meeting 
the requirements of Sec. 144.140 must be retained and produced upon 
request.



Sec. 144.160  Marking.

    (a) The hull of each documented vessel must be marked as required by 
part 67 of this chapter.
    (b) The hull of each undocumented vessel must be marked with its 
name and hailing port.
    (c) A vessel complying with either Sec. 144.300(a) or Sec. 144.305 
must have draft marks that meet the requirements of Sec. 97.40-10 of 
this chapter.
    (d) Each vessel assigned a load line must have the load line marks 
and the deck line permanently scribed or embossed as required by 
subchapter E of this chapter.
    (e) Each watertight door and watertight hatch must be marked on both 
sides in clearly legible letters at least 25 millimeters (1 inch) high: 
``WATERTIGHT DOOR--KEEP CLOSED'' or ``WATERTIGHT HATCH--KEEP CLOSED''.
    (f) Each escape hatch and emergency exit used as means of escape 
must be marked on both sides in clearly legible letters at least 50 
millimeters (2 inches) high: ``EMERGENCY EXIT, KEEP CLEAR''.



                           Subpart B_Structure



Sec. 144.200  Structural standards for an existing vessel.

    An existing vessel may be deemed by the OCMI, or TPO, to be in 
compliance with this subpart provided that either:
    (a) The vessel is built, equipped, and maintained to conform to the 
rules of a recognized classification society appropriate for the 
intended service and routes, but not classed; or
    (b) The vessel has been both in satisfactory service insofar as 
structural adequacy is concerned and does not cause the structure of the 
vessel to be questioned by either the OCMI, or TPO engaged to perform an 
audit or survey.



Sec. 144.205  Structural standards for a new vessel.

    (a) Except as provided in paragraphs (b) and (c) of this section, a 
new vessels must comply with the standards established by the American 
Bureau of Shipping (ABS) as provided in the following table.

         Table 144.205(a)--Structural Standards for a New Vessel
------------------------------------------------------------------------
  For a new vessel to be certificated for    ABS Rules for Building and
               service on--                          Classing--
------------------------------------------------------------------------
(1) Lakes, bays, and sounds, limited        Steel Vessels Under 90
 coastwise, coastwise, and oceans routes;    Meters (295 Feet) in Length
                                             (incorporated by reference,
                                             see Sec.  136.112 of this
                                             subchapter) apply; or
(2) Rivers or intracoastal waterways        Steel Vessels for Service on
 routes.                                     Rivers and Intracoastal
                                             Waterways (incorporated by
                                             reference, see Sec.
                                             136.112 of this subchapter)
                                             apply.
------------------------------------------------------------------------

    (b) Alternate design standards to comply with this subpart may be 
approved in accordance with Sec. 136.115 of this subchapter.
    (c) The current standards of a recognized classification society, 
other than ABS, may be used provided they are accepted by the Coast 
Guard as providing an equivalent level of safety.
    (d) The structural standard selected must be applied throughout the 
vessel including design, construction, installation, maintenance, 
alteration, and repair. Deviations are subject to approval by the 
Commanding Officer, Marine Safety Center.



Sec. 144.215  Special consideration.

    The cognizant OCMI may give special consideration to the structural 
requirements for a vessel if that vessel is:
    (a) Not greater than 65 feet in length;
    (b) Operating exclusively within a limited geographic area; or
    (c) Of an unusual design not contemplated by the rules of the 
American Bureau of Shipping or other recognized classification society.



              Subpart C_Stability and Watertight Integrity



Sec. 144.300  Stability standards for an existing vessel.

    (a) The owner or managing operator of an existing vessel operating 
under a

[[Page 47]]

stability document must be able to readily produce a copy of such 
document.
    (b) The owner or managing operator of an existing vessel not 
operating under a stability document must be able to show at least one 
of the following:
    (1) The vessel's operation or a history of satisfactory service does 
not cause the stability of the vessel to be questioned by either the 
Coast Guard or a TPO engaged to perform an audit or survey.
    (2) The vessel performs successfully on operational tests to 
determine whether the vessel has adequate stability and handling 
characteristics.
    (3) The vessel has a satisfactory stability assessment by means of 
giving due consideration to each item that impacts a vessel's stability 
characteristics which include, but are not limited to, the form, 
arrangement, construction, number of decks, route, and operating 
restrictions of the vessel.



Sec. 144.305  Stability standards for a new vessel.

    Each new vessel must meet the applicable stability requirements of 
part 170 and, if applicable, of part 173, subpart E, of this chapter in 
addition to the requirements in the following table:

           Table 144.305--Stability Standards for a New Vessel
------------------------------------------------------------------------
  Each new vessel certificated to operate    Must meet the requirements
                   on--                                 of--
------------------------------------------------------------------------
(a) Protected waters......................  Sec.  170.173(e)(2) of this
                                             chapter.
(b) Partially protected waters............  Secs.  170.170 and
                                             170.173(e)(1) of this
                                             chapter.
(c) Exposed waters or that is assigned a    Secs.  170.170 and 174.145
 load line.                                  of this chapter.
------------------------------------------------------------------------



Sec. 144.310  Lifting requirements for a new vessel.

    Each new vessel equipped for lifting must meet the requirements of 
part 173, subpart B, of this chapter.



Sec. 144.315  Weight and moment history requirements for a vessel with
approved lightweight characteristics.

    (a) A weight and moment history of changes to the vessel since 
approval of its lightweight characteristics (displacement, Longitudinal 
Center of Gravity (LCG) and Vertical Center of Gravity (VCG)) must be 
maintained. All weight modifications to the vessel (additions, removals, 
and relocations) including a calculation of the aggregate weight change 
(absolute total of all additions, removals, and relocations) must be 
recorded in the history, along with a description of the change(s), when 
and where accomplished, moment arms, etc. After each modification, the 
lightweight characteristics must be recalculated.
    (b) When the aggregate weight change is more than 2 percent of the 
vessel's approved lightweight displacement, or the recalculated change 
in the vessel's lightweight LCG is more than 1 percent of the LBP, a 
deadweight survey must be performed to determine the vessel's current 
lightweight displacement and LCG. Use the following table to determine 
when the deadweight survey results or the vessel's aggregate weight 
change requires the vessel to undergo a specified stability test:

                              Table 144.315
------------------------------------------------------------------------
                   If--                                Then--
------------------------------------------------------------------------
(1) The deadweight survey results are both  the recalculated lightweight
 within 1 percent of the recalculated        VCG can be accepted as
 lightweight displacement and within 1       accurate;
 percent LBP of the recalculated
 lightweight LCG,
(2) The deadweight survey results do not    the vessel must undergo a
 meet the criteria of paragraph (b)(1) of    stability test in
 this section,                               accordance with 46 CFR 170,
                                             subpart F;
(3) The aggregate weight change is more     the vessel must undergo a
 than 10 percent of the vessel's approved    stability test in
 lightweight displacement,                   accordance with 46 CFR 170,
                                             subpart F.
------------------------------------------------------------------------



Sec. 144.320  Watertight or weathertight integrity.

    (a) Each vessel fitted with installed bulwarks around the exterior 
of the main deck must have sufficient freeing ports or scuppers or a 
combination of freeing ports and scuppers to allow water to run off the 
deck quickly without adversely affecting the stability of the vessel.
    (b) Closure devices must be provided for deckhouse or hull 
penetrations, which open to the exterior of the vessel and which may 
allow water to enter the vessel. These devices must be suitable for the 
expected route.

[[Page 48]]



Sec. 144.330  Review of a vessel's watertight and weathertight integrity.

    The cognizant OCMI may require review of a vessel's watertight and 
weathertight integrity. This review may be performed by an individual 
who meets the requirements of Sec. 144.140. The review may include an 
examination of a plan that shows the original placement of decks and 
bulkheads.



                        Subpart D_Fire Protection



Sec. 144.400  Applicability.

    Except for Sec. 144.415, which applies to each new and existing 
vessel, this subpart applies to each new towing vessel.



Sec. 144.405  Fire hazards to be minimized.

    Each vessel must be designed and constructed to minimize fire 
hazards insofar as reasonable and practicable.



Sec. 144.410  Separation of machinery and fuel tank spaces from
accommodation spaces.

    Machinery and fuel tank spaces must be separated from accommodation 
spaces by bulkheads. Doors may be installed provided they are the self-
closing type.



Sec. 144.415  Combustibles insulated from heated surfaces.

    Internal combustion engine exhaust ducts, galley exhaust ducts and 
similar ignition sources must be insulated with noncombustible 
insulation if less than 450 mm (18 inches) away from combustible 
material. Installations in accordance with ABYC P-1 or NFPA 302 
(incorporated by reference, see Sec. 136.112 of this subchapter) will be 
considered as meeting the requirements of this section.



Sec. 144.425  Waste receptacles.

    Unless other means are provided to ensure that a potential waste 
receptacle fire would be limited to the receptacle, waste receptacles 
must be constructed of noncombustible materials with no openings in the 
sides or bottom.



Sec. 144.430  Mattresses.

    Each mattress must comply with either:
    (a) The Consumer Product Safety Commission Standard for Mattress 
Flammability (FF 4-72, Amended), 16 CFR part 1632, subpart A, and not 
contain polyurethane foam; or
    (b) IMO Resolution A.688(17) (incorporated by reference, see 
Sec. 136.112 of this subchapter) in which case the mattress may contain 
polyurethane foam.



                       Subpart E_Emergency Escape



Sec. 144.500  Means of escape.

    Where practicable and except as provided in Sec. 144.515, each space 
where crew may be quartered or normally employed must have at least two 
means of escape. Arrangements on an existing vessel may be retained if 
it is impracticable or unreasonable to provide two means of escape.



Sec. 144.505  Location of escapes.

    The two required means of escape must be widely separated and, if 
possible, at opposite ends or sides of the space. Means may include 
normal and emergency exits, passageways, stairways, ladders, deck 
scuttles, doors, and windows.



Sec. 144.510  Window as a means of escape.

    On a vessel of 65 feet (19.8 meters) or less in length, a window or 
windshield of sufficient size and proper accessibility may be used as 
one of the required means of escape from an enclosed space, provided it:
    (a) Does not lead directly overboard;
    (b) Is suitably marked; and
    (c) Has a means to open the window or break the glass.



Sec. 144.515  One means of escape required.

    Only one means of escape is required from a space where:
    (a) The space has a deck area less than 30 square meters (322 square 
feet);
    (b) There is no stove, heater, or other source of fire in the space;
    (c) The means of escape is located as far as possible from a 
machinery space or fuel tank; and

[[Page 49]]

    (d) If an accommodation space, the single means of escape does not 
include a deck scuttle or a ladder.



                          Subpart F_Ventilation



Sec. 144.600  Ventilation for accommodations.

    Each accommodation space on a vessel must be ventilated in a manner 
suitable for the purpose of the space.



Sec. 144.605  Means to stop fans and close openings.

    Means must be provided for stopping each fan in a ventilation system 
serving machinery spaces and for closing, in case of fire, each doorway, 
ventilator, and annular space around funnels and other openings into 
such spaces.



Sec. 144.610  Ventilation in a vessel more than 65 feet in length.

    A vessel of more than 65 feet (19.8 meters) in length with overnight 
accommodations must have a mechanical ventilation system unless a 
natural system, such as opening windows, portholes, or doors, will 
provide adequate ventilation in ordinary weather.



                          Subpart G_Crew Spaces



Sec. 144.700  General requirements.

    (a) A crew accommodation space and a work space must be of 
sufficient size, adequate construction, and with suitable equipment to 
provide for the safe operation of the vessel and the protection and 
accommodation of the crew in a manner practicable for the size, 
facilities, service, route, and modes of operation of the vessel.
    (b) The deck above a crew accommodation space must be located above 
the deepest load waterline.



Sec. 144.710  Overnight accommodations.

    Overnight accommodations must be provided for crewmembers if it is 
operated more than 12 hours in a 24-hour period, unless the crew is put 
ashore and the vessel is provided with a new crew.



Sec. 144.720  Crew rest consideration.

    The condition of the crew accommodations must consider the 
importance of crew rest. Factors to consider include vibrations, ambient 
light, noise levels, and general comfort. Every effort must be made to 
ensure that quarters help provide a suitable environment for sleep and 
off-duty rest.



                       Subpart H_Rails and Guards



Sec. 144.800  Handrails and bulwarks.

    (a) Rails or equivalent protection must be installed near the 
periphery of all decks accessible to crew. Equivalent protection may 
include lifelines, wire rope, chains, and bulwarks that provide strength 
and support equivalent to fixed rails.
    (b) In areas where space limitations make deck rails impractical, 
such as at narrow catwalks in way of deckhouse sides, hand grabs may be 
substituted.



Sec. 144.810  Storm rails.

    On a vessel in oceans or coastwise service, suitable storm rails or 
hand grabs must be installed in all passageways and at the deckhouse 
sides where persons onboard might have normal access.



Sec. 144.820  Guards in dangerous places.

    An exposed hazard such as gears and rotating machinery, must be 
protected by a cover, guard or rail. This is not meant to restrict 
access to towing equipment such as winches, drums, towing gear or 
steering compartment equipment necessary for the operation of the 
vessel.



Sec. 144.830  Protection against hot piping.

    Each exhaust pipe from an internal combustion engine which is within 
reach of personnel must be insulated or otherwise guarded to prevent 
burns. On a new vessel, each pipe that contains vapor, gas, or liquid 
that has a temperature exceeding 150  deg.F (65.5  deg.C) which is 
within reach of personnel must be insulated where necessary or otherwise 
guarded to prevent injury.

[[Page 50]]



                          Subpart I_Visibility



Sec. 144.905  Operating station visibility.

    (a) Windows and other openings at the operating station must be of 
sufficient size and properly located to provide a clear field of vision 
for safe operation in any condition.
    (b) Means must be provided to ensure that windows immediately 
forward of the operating station in the pilothouse allow for adequate 
visibility to ensure safe navigation regardless of weather conditions. 
This may include mechanical means such as windshield wipers, defoggers, 
clear-view screens, or other such means, taking into consideration the 
intended route of the vessel.
    (c) The field of vision from the operating station on a new vessel 
must extend over an arc from dead ahead to at least 60 degrees on either 
side of the vessel.
    (d) If a new vessel is towing astern, the operating station must be 
provided with a view aft.
    (e) In a new vessel, glass or other glazing material used in windows 
at the operating station must have a light transmission of not less than 
70 percent according to Test 2 of ANSI/SAE Z 26.1-1996 (incorporated by 
reference, see Sec. 136.112 of this subchapter) and must comply with 
Test 15 of ANSI/SAE Z 26.1-1996 for Class I Optical Deviation.



Sec. 144.920  Window or portlight strength in a new vessel.

    (a) Each window or portlight, and its means of attachment to the 
hull or the deckhouse, must be capable of withstanding the maximum 
expected load from wind and waves, due to its location on the vessel and 
the vessel's authorized route.
    (b) Any covering or protection placed over a window or porthole that 
could be used as a means of escape must be able to be readily removed or 
opened from within the space.
    (c) Glass and other glazing materials used in windows of a new 
towing vessel must be materials that will not break into dangerous 
fragments if fractured.

[[Page 51]]



                     SUBCHAPTER N_DANGEROUS CARGOES



                        PARTS 145	146 [RESERVED]



PART 147_HAZARDOUS SHIPS' STORES--Table of Contents



                      Subpart A_General Provisions

Sec.
147.1  Purpose and applicability.
147.3  Definitions.
147.5  Commandant (CG-OES); address.
147.7  Incorporation by reference.
147.8  OMB control numbers assigned pursuant to the Paperwork Reduction 
          Act.
147.9  Waivers.
147.15  Hazardous ships' stores permitted on board vessels.
147.30  Labeling.
147.33  Right of appeal.

    Subpart B_Stowage and Other Special Requirements for Particular 
                                Materials

147.35  Purpose of subpart.
147.40  Materials requiring Commandant (CG-OES) approval.
147.45  Flammable and combustible liquids.
147.50  Fuel for cooking, heating, and lighting.
147.60  Compressed gases.
147.65  Carbon dioxide and Halon fire extinguishing systems.
147.66  Inert gas fire extinguishing systems.
147.67  Halocarbon fire extinguishing systems.
147.70  Acetylene.
147.85  Oxygen.
147.90  Refrigerants.
147.95  Explosives.
147.100  Radioactive materials.
147.105  Anesthetics, drugs, and medicines.

    Authority: 46 U.S.C. 3306; E.O. 12234, 45 FR 58801, 3 CFR, 1980 
Comp., p. 277; Department of Homeland Security Delegation No. 0170.1.

    Source: CGD 84-044, 53 FR 7749, Mar. 10, 1988, unless otherwise 
noted.

    Editorial Note: Nomenclature changes to part 147 appear by USCG-
2009-0702, 74 FR 49235, Sept. 25, 2009, and USCG-2012-0832, 77 FR 59782, 
Oct. 1, 2012.



                      Subpart A_General Provisions



Sec. 147.1  Purpose and applicability.

    (a) This part prescribes regulations designating what hazardous 
materials may be on board vessels as ships' stores and prescribes 
requirements for the labeling, stowage, and use of those materials.
    (b) This part applies to all vessels listed in 46 U.S.C. 3301 as 
subject to inspection under part B of 46 U.S.C. Subtitle II. On foreign 
vessels in the navigable waters of the United States, the Captain of the 
Port or District Commander may prohibit the unsafe use or stowage of 
hazardous ships' stores under 33 CFR 160.109.
    (c) All certifications previously issued by the Coast Guard under 
this part permitting the use of particular materials or products as 
ships' stores are null and void.
    (d) The regulations in this subchapter (46 CFR parts 147, 147A, and 
148) have preemptive effect over State or local regulations in the same 
field.

[CGD 84-044, 53 FR 7749, Mar. 10, 1988, as amended by USCG-2006-24797, 
77 FR 33885, June 7, 2012; USCG-2012-0196, 81 FR 48272, July 22, 2016]



Sec. 147.3  Definitions.

    As used in this part:
    Accommodation, control, or service spaces means living quarters, 
including walkways, dining rooms, galleys, pantries, lounges, 
lavatories, cabins, staterooms, offices, hospitals, cinemas, and game 
and hobby rooms; areas containing controls for equipment and navigation; 
workshops, other than those forming part of machinery spaces; and store 
rooms adjacent to these spaces.
    Combustible liquid means combustible liquid as the term is defined 
in 49 CFR 173.120(b).
    Compressed gas means compressed gas as the term is defined in 49 CFR 
173.115.
    Consumer commodity means a commodity, such as a polish, insecticide, 
cleaning compound, or distillate, that is packaged and distributed in a 
form and quantity intended for sale through retail sales establishments.
    Flammable liquid means flammable liquid as the term is defined in 49 
CFR 173.120(a).
    Hazardous material means hazardous material as the term is defined 
in 49 CFR 171.8.

[[Page 52]]

    Hazardous ships' stores means ships' stores that are hazardous 
materials.
    Proper shipping name means the name of the hazardous ships' stores 
shown in Roman print (not in italics) in 49 CFR 172.101.
    Ships' stores means materials which are on board a vessel for the 
upkeep, maintenance, safety, operation, or navigation of the vessel 
(except for fumigants under part 147A of this chapter, for fuel and 
compressed air used for the vessel's primary propulsion machinery, or 
for fixed auxiliary equipment) or for the safety or comfort of the 
vessel's passengers or crew.
    Technical name means the recognized chemical name used in scientific 
or technical publications.

[CGD 84-044, 53 FR 7749, Mar. 10, 1988, as amended by CGD 97-057, 62 FR 
51048, Sept. 30, 1997]



Sec. 147.5  Commandant (CG-OES); address.

    Commandant (CG-ENG) is the Office of Design and Engineering 
Standards. The mailing address is Commandant (CG-ENG), Attn: Office of 
Design and Engineering Systems, U.S. Coast Guard Stop 7509, 2703 Martin 
Luther King Jr. Avenue SE., Washington, DC 20593-7509; telephone 202-
372-1372.

[USCG-2013-0671, 78 FR 60154, Sept. 30, 2013]



Sec. 147.7  Incorporation by reference.

    (a) Certain material is incorporated by reference into this part 
with the approval of the Director of the Federal Register under 5 U.S.C. 
552(a) and 1 CFR part 51. To enforce any edition other than that 
specified in this section, the Coast Guard must publish notice of change 
in the Federal Register and the material must be available to the 
public. All approved material is available for inspection at Coast Guard 
Headquarters. Contact Commandant (CG-ENG), Attn: Office of Design and 
Engineering Systems, U.S. Coast Guard Stop 7509, 2703 Martin Luther King 
Jr. Avenue SE., Washington, DC 20593-7509. The material is also 
available from the sources listed below. It is also available for 
inspection at the National Archives and Records Administration (NARA). 
For information on the availability of this material at NARA, call 202-
741-6030 or go to http://www.archives.gov/federal_register/
code_of_federal_regulations/ibr_locations.html.
    (b) American Boat and Yacht Council, Inc. (ABYC), 613 Third Street, 
Suite 10, Annapolis, MD 21403, telephone 410-990-4460, www.abyinc.org.
    (1) ABYC H-25-81, Portable Fuel Systems and Portable Containers for 
Flammable Liquids, (May 12, 1981), (``ABYC H-25-81''), IBR approved for 
Sec. 147.45.
    (2) [Reserved]
    (c) American Society of Heating, Refrigerating, and Air-Conditioning 
Engineers, Inc. (ASHRAE), Publication Sales Department, 1791 Tullie 
Circle NE., Atlanta, GA 30329, telephone 404-636-8400, www.ashrae.org.
    (1) ANSI/ASHRAE 34-78, Number Designation of Refrigerants (approved 
1978), (``ANSI/ASHRAE 34-78''), IBR approved for Sec. 147.90.
    (2) [Reserved]
    (d) Compressed Gas Association, Inc. (CGA), 14501 George Carter Way, 
Suite 103, Chantilly, Virginia 20151, 703-788-2700, http://
www.cganet.com.
    (1) CGA C-6-2007, Standards for Visual Inspection of Steel 
Compressed Gas Cylinders, Tenth Edition, 2007, IBR approved for 
Sec. 147.65(b).
    (2) [Reserved]
    (e) National Fire Protection Association (NFPA), 1 Batterymarch 
Park, Quincy, MA 02169, 617-770-3000, http://www.nfpa.org.
    (1) NFPA 2001, Standard on Clean Agent Fire Extinguishing Systems, 
2008 Edition, IBR approved for Secs. 147.66(c) and 147.67(c).
    (2) NFPA 12A, Standard on Halon 1301 Fire Extinguishing Systems, 
2009 Edition, effective July 18, 2008, IBR approved for Sec. 147.65(b).
    (f) Public Health Service (PHS), Department of Health and Human 
Services (DHHS), Superintendent of Documents, U.S. Government Printing 
Office, 710 North Capitol Street NW., Washington, DC 20401, 866-512-
1800, http://www.gpo.gov.
    (1) DHHS Publication No. PHS 84-2024, The Ship's Medicine Chest and 
Medical Aid at Sea, revised 1984, IBR approved for Sec. 147.105.
    (2) [Reserved]

[[Page 53]]

    (g) UL (formerly Underwriters Laboratories), 12 Laboratory Drive, 
P.O. Box 13995, Research Triangle Park, NC 27709, 919-549-1400, http://
www.ul.com.
    (1) UL 30, Standard for Metal Safety Cans, 7th Ed., revised March 3, 
1987, (``UL 30''), IBR approved for Sec. 147.45(f).
    (2) UL 1185, Standard for Portable Marine Fuel Tanks, Second 
Edition, revised July 6, 1984, (``UL 1185''), IBR approved for 
Sec. 147.45(f).
    (3) UL 1313, Standard for Nonmetallic Safety Cans for Petroleum 
Products, 1st Ed., revised March 22, 1985, (``UL 1313''), IBR approved 
for Sec. 147.45(f).
    (4) UL 1314, Standard for Special-Purpose Containers, 1st Ed., 
revised February 7, 1984, (``UL 1314''), IBR approved for 
Sec. 147.45(f).

[USCG-2006-24797, 77 FR 33885, June 7, 2012, as amended by USCG-2013-
0671, 78 FR 60154, Sept. 30, 2013; USCG-2012-0196, 81 FR 48272, July 22, 
2016]



Sec. 147.8  OMB control numbers assigned pursuant to the Paperwork
Reduction Act.

    (a) Purpose. This section collects and displays the control numbers 
assigned to information collection and recordkeeping requirements in 
this subchapter by the Office of Management and Budget (OMB) pursuant to 
the Paperwork Reduction Act of 1980 (44 U.S.C. 3501 et seq.). The Coast 
Guard intends that this section comply with the requirements of 44 
U.S.C. 3507(f), which requires that agencies display a current control 
number assigned by the Director of the OMB for each approved agency 
information collection requirement.
    (b) Display.

------------------------------------------------------------------------
                                                             Current OMB
    46 CFR part or section where identified or described     control no.
------------------------------------------------------------------------
Sec.  147.9................................................    1625-0034
Sec.  147.30...............................................    1625-0034
Sec.  147.40...............................................    1625-0034
Sec.  147.60(c)(2).........................................    1625-0034
------------------------------------------------------------------------


[CGD 88-072, 53 FR 34298, Sept. 6, 1988; CGD 88-072, 53 FR 37570, Sept. 
27, 1988, as amended by USCG-2004-18884, 69 FR 58349, Sept. 30, 2004]



Sec. 147.9  Waivers.

    (a) Any requirement in this part may be waived on a case by case 
basis if it is determined by Commandant (CG-ENG) that the requirement is 
impracticable under the circumstances and that an acceptable level of 
safety can be maintained.
    (b) Requests for issuance of a waiver must be in writing and contain 
a detailed explanation of--
    (1) Why the requirement is impracticable; and
    (2) What measures will be taken to maintain an acceptable or 
equivalent level of safety.

[CGD 84-044, 53 FR 7749, Mar. 10, 1988, as amended by CGD 95-072, 60 FR 
50465, Sept. 29, 1995; CGD 96-041, 61 FR 50731, Sept. 27, 1996; USCG-
2013-0671, 78 FR 60154, Sept. 30, 2013]



Sec. 147.15  Hazardous ships' stores permitted on board vessels.

    Unless prohibited under subpart B of this part, any hazardous 
material may be on board a vessel as ships' stores if the material--
    (a) Is labeled according to Sec. 147.30; and
    (b) Meets the requirements, if any, in subpart B of this part 
applicable to the material.



Sec. 147.30  Labeling.

    (a) Except as provided in paragraph (b) of this section, all 
immediate receptacles, containers, or packages containing hazardous 
ships' stores must be labeled in English with the following information 
concerning the contents:
    (1) Technical name or proper shipping name.
    (2) For hazardous ships' stores other than liquid fuels, 
manufacturer's or supplier's name and address.
    (3) Hazard classification under 49 CFR 172.101, 173.2, and 173.2(a).
    (4) For hazardous ships' stores other than liquid fuels, step by 
step procedures for proper use.
    (5) First aid instructions in the event of personnel contact, 
including antidotes in the event of ingestion.
    (6) Stowage and segregation requirements.
    (b) Hazardous ships' stores that are consumer commodities labeled in 
accordance with the Federal Hazardous Substances Act Regulations in 16 
CFR

[[Page 54]]

part 1500 need not be labeled as specified in paragraph (a) of this 
section.

[CGD 84-044, 53 FR 7749, Mar. 10, 1988, as amended by CGD 97-057, 62 FR 
51048, Sept. 30, 1997; USCG-2005-22329, 70 FR 57183, Sept. 30, 2005]



Sec. 147.33  Right of appeal.

    Any person directly affected by a decision or action taken under 
this part, by or on behalf of the Coast Guard, may appeal therefrom in 
accordance with subpart 1.03 of this chapter.

[CGD 88-033, 54 FR 50381, Dec. 6, 1989; 55 FR 21386, May 24, 1990]



    Subpart B_Stowage and Other Special Requirements for Particular 
                                Materials



Sec. 147.35  Purpose of subpart.

    This subpart prescribes special requirements applicable to 
particular, named materials. These requirements are in addition to the 
general requirements in subpart A applicable to those materials.



Sec. 147.40  Materials requiring Commandant (CG-OES) approval.

    (a) Commandant (CG-ENG) approval is required before the following 
hazardous materials may be on board a vessel as ships' stores:
    (1) Poison gases of Class 2, Division 2.3 and toxic liquids of Class 
6, Division 6.1 which are poisonous by inhalation in Hazard Zone A.
    (2) Explosives of Divisions 1.1 or 1.2.
    (3) Flammable gases, other than those addressed specifically in this 
subpart.
    (4) Forbidden materials listed in 49 CFR 172.101.
    (b) Request for approval must be submitted to the Commandant (CG-
ENG), identify the material, and explain the need for its use.
    (c) Upon approval, the material is added to the list of materials 
approved under this section. A copy of this list is available from the 
Commandant (CG-ENG) at the address in Sec. 147.5.

[CGD 84-044, 53 FR 7749, Mar. 10, 1988, as amended by CGD 95-072, 60 FR 
50465, Sept. 29, 19955; CGD 96-041, 61 FR 50731, Sept. 27, 1996; CGD 97-
057, 62 FR 51048, Sept. 30, 1997; USCG-2013-0671, 78 FR 60154, Sept. 30, 
2013]



Sec. 147.45  Flammable and combustible liquids.

    (a) This section applies to the stowage and transfer of flammable 
and combustible liquids (including gasoline and diesel oil), other than 
liquids used as fuel for cooking, heating, and lighting under 
Sec. 147.50.
    (b) No flammable or combustible liquids may be stowed in any 
accommodation, control, or service space (other than a paint locker).
    (c) No more than 19 liters (five gallons) of flammable liquids may 
be stowed in any machinery space. The flammable liquids must be in 
containers of 3.8 liters (one gallon) or less.
    (d) No more than 208 liters (55 gallons) of combustible liquids may 
be stowed in any machinery space.
    (e) An aggregate of more than 7.6 liters (two gallons) of flammable 
or combustible liquids stowed outside of an accommodation, control, or 
service, space (other than a paint locker) or outside of a machinery 
space must be stowed in a paint locker that is marked with a warning 
sign indicating flammable or combustible liquid storage.
    (f) Flammable and combustible liquids used as fuel for portable 
auxiliary equipment must be stored in--
    (1) Integral tanks that form part of the vessel's structure;
    (2) An independent tank meeting the requirements of subpart 58.50 of 
Part 58 of this chapter;
    (3) A non-bulk packaging authorized for Class 3 (flammable) liquids 
or combustible liquids under 49 CFR 173.201, 173.202, or 173.203, as 
referenced for the specific liquid in column 8B of the Hazardous 
Materials Table of 49 CFR 172.101.
    (4) A portable outboard fuel tank meeting the specifications of ABYC 
H-25-81 (incorporated by reference, see Sec. 147.7) or one identified by 
Underwriters Laboratories as meeting the specifications of UL 1185 
(incorporated by reference, see Sec. 147.7);
    (5) A portable safety container identified by Underwriters 
Laboratories as meeting the specifications of UL 30 or UL 1313 (both 
incorporated by reference, see Sec. 147.7); or
    (6) A portable safety container identified by Underwriters 
Laboratories as

[[Page 55]]

meeting the requirements of UL 1314 (incorporated by reference, see 
Sec. 147.7).
    (g) Each portable container of flammable or combustible liquid used 
for portable auxiliary equipment must be stowed in a paint locker or an 
open location designated by the master.
    (h) Fuel tanks for portable auxiliary equipment using flammable or 
combustible liquids may only be refilled on a vessel--
    (1) By using a container described in paragraph (f)(2), (f)(3), or 
(f)(5) of this section which has a capacity not exceeding 23 liters (6 
gallons); or
    (2) In the case of portable outboard fuel tanks described in 
paragraph (f)(4) of this section, in accordance with paragraph (i) of 
this section.
    (i) Portable containers or portable outboard fuel tanks may be 
refilled from a larger container of flammable or combustible liquid on 
the weather deck of a vessel, other than a small passenger vessel 
subject to Subchapter T of this chapter, provided that--
    (1) A drip pan of adequate size is used to collect any drippings; 
and
    (2) At least one Coast Guard approved Type B, Size I, fire 
extinguisher is within three meters (9.75 feet) of the refilling 
location.

[CGD 84-044, 53 FR 7749, Mar. 10, 1988, as amended by CGD 92-100, 59 FR 
17001, Apr. 11, 1994; CGD 97-057, 62 FR 51048, Sept. 30, 1997; USCG-
2006-24797, 77 FR 33885, June 7, 2012]



Sec. 147.50  Fuel for cooking, heating, and lighting.

    (a) Flammable and combustible liquids and gases not listed in this 
section are prohibited for cooking, heating, or lighting on any vessel, 
with the exception of combustible liquids on cargo vessels.
    (b) Fluid alcohol is prohibited for cooking, heating, or lighting on 
ferry vessels. Fluid alcohol burners, where wet primed, must have a 
catch pan not less than \3/4\ of an inch deep secured inside of the 
frame of the stove or have the metal protection under the stove flanged 
up \3/4\ of an inch to form a pan.
    (c) Containers of solidified alcohol must be secured on a fixed 
base.
    (d) Liquefied or non-liquefied gas is prohibited for cooking, 
heating, and lighting on ferry vessels, but may be used on other 
inspected vessels if the system in which it is used meets the applicable 
requirements of subpart 58.16 or subpart 184.05 of this chapter, as 
appropriate, or is approved by the Commandant (CG-ENG).
    (e) Kerosene and commercial standard fuel oil No. 1, No. 2, and No. 
3 are prohibited for cooking, heating, or lighting on ferry or passenger 
vessels, unless the following conditions are met:
    (1) Pressure or gravity feed must be used.
    (2) Where wet priming is used in a cooking device, the device must 
have a catch pan not less than three fourths of an inch deep secured 
inside the frame of the device or a metal protector under the device 
with a least a three fourths inch flange to form a pan.
    (3) Where wet priming is used, a non-flammable priming liquid must 
be used.
    (4) Fuel tanks for fixed stoves must be separated from the stove and 
mounted in a location open to the atmosphere or mounted inside a 
compartment with an outside fill and vent.
    (5) Fuel lines must have an easily accessible shut-off valve at the 
tank.
    (6) If the fuel tank is outside of a stove compartment, a shut-off 
valve must be fitted at the stove.

[CGD 84-044, 53 FR 7749, Mar. 10, 1988, as amended by CGD 83-013, 54 FR 
6402, Feb. 10, 1989; CGD 95-072, 60 FR 50465, Sept. 29, 1995; CGD 96-
041, 61 FR 50731, Sept. 27, 1996]



Sec. 147.60  Compressed gases.

    (a) Cylinder requirements. Cylinders used for containing hazardous 
ships' stores that are compressed gases must be--
    (1) Authorized for the proper shipping name of the gas in accordance 
with 49 CFR 172.101 and 49 CFR part 173;
    (2) Constructed in accordance with subpart C of 49 CFR part 178 or 
exempted under 49 CFR part 107;
    (3) Filled, marked, and inspected in accordance with 49 CFR 173.301 
through 173.308; and
    (4) Except as provided in 46 CFR 147.65, 147.66, and 147.67, 
maintained and retested in accordance with 49 CFR 180.
    (b) Stowage and care of cylinders. (1) Cylinders must always be 
secured and, when not in use, they must be stowed

[[Page 56]]

in a rack in an upright position, with the valve protection cap in 
place.
    (2) Lockers or housings must be vented to the open air near the top 
and bottom for positive circulation of vapors.
    (3) Cylinders must be protected from all sources of heat which may 
cause the cylinders to be heated to a temperature higher than 130 
deg.F.
    (c) Pressure vessels other than cylinders. Pressure vessels, other 
than cylinders subject to paragraph (a) of this section, used for 
containing ships' stores that are compressed gases must--
    (1) Be constructed and inspected in accordance with part 54 of this 
chapter; and
    (2) Carry only nitrogen or air, unless permission is granted by 
Commandant (CG-ENG) to do otherwise.

[CGD 84-044, 53 FR 7749, Mar. 10, 1988, as amended by CGD 95-072, 60 FR 
50465, Sept. 29, 19955; CGD 96-041, 61 FR 50731, Sept. 27, 1996; USCG-
2006-24797, 77 FR 33886, June 7, 2012; USCG-2013-0671, 78 FR 60154, 
Sept. 30, 2013]



Sec. 147.65  Carbon dioxide and Halon fire extinguishing systems.

    (a) Carbon dioxide cylinders forming part of a fixed fire 
extinguishing system must be maintained as follows:
    (1) Cylinders must be retested at least every 12 years. If a 
cylinder is discharged and more than 5 years have elapsed since the last 
test, it must be retested before recharging.
    (2) Carbon dioxide cylinders must be rejected for further service 
when they:
    (i) Leak;
    (ii) Are dented, bulging, severely corroded, or otherwise in a 
weakened condition;
    (iii) Have lost more than 5 percent of their tare weight; or
    (iv) Have been involved in a fire.
    (3) Cylinders which have contained gas agents for fixed fire 
extinguishing systems and have not been tested within 5 years must not 
be used to contain another compressed gas onboard a vessel, unless the 
cylinders are retested and re-marked in accordance with 
Sec. 147.60(a)(3) and (4).
    (4) Flexible connections between cylinders and distribution piping 
of semi-portable or fixed carbon dioxide fire extinguishing systems and 
discharge hoses in semi-portable carbon dioxide fire extinguishing 
systems must be replaced or tested at a pressure of 6.9 MPa (1,000 
psig). At test pressure, the pressure must not drop at a rate greater 
than 1.03 MPa (150 psi) per minute for a 2-minute period. The test must 
be performed when the cylinders are retested.
    (b) Halon cylinders forming part of a fixed fire extinguishing 
system must be maintained as follows:
    (1) The agent weight must be ascertained annually by one of the 
methods identified in paragraphs (b)(2) through (b)(4) of this section. 
Measured weights or liquid levels must be recorded and compared with the 
recommended fill levels and previous readings. If cylinder weight or 
liquid level, adjusted for temperature, shows a 5 percent loss of 
pressure, the cylinder must be refilled. If cylinder pressure, adjusted 
for temperature, shows a 10 percent loss of pressure, the cylinders must 
be refilled.
    (2) The cylinders may be removed from the mounting racks and 
weighed.
    (3) The contents of cylinders fitted with integral floating dipstick 
liquid level indicators may be measured with the dipstick indicator.
    (4) With approval of the cognizant Officer in Charge, Marine 
Inspection (OCMI), liquid level indication measures such as ultrasonic/
audio gauging or radioisotope gauging may be used, provided that all of 
the following conditions are met:
    (i) Measurement equipment is calibrated for the cylinder wall 
thickness and Halon liquid.
    (ii) Calibration is verified by weighing the cylinders that indicate 
the lowest levels of Halon in each release group, but in no case less 
than 10 percent of the inspected cylinders in each release group.
    (iii) The acceptable liquid level is identified by the original 
system installer or coincides with all other cylinder liquid levels of 
the same release group.
    (iv) Measurements are made by personnel skilled in ultrasonic/audio 
gauging or radioisotope gauging techniques.
    (5) Effective 12 years after commissioning of the system or 5 years 
after the last hydrostatic test, whichever is

[[Page 57]]

later, the following inspections must be completed every 5 years:
    (i) Cylinders continuously in service without discharging must be 
removed from mounting racks and given a complete external visual 
inspection. The inspection must be conducted in accordance with the CGA 
Pamphlet C-6 (incorporated by reference, see Sec. 147.7).
    (ii) The volume of agent must be ascertained either by removing and 
weighing the cylinder or by floating liquid level indicators, integral 
with the cylinder construction, taking into account adjustments 
necessary for cylinder temperature and pressure.
    (6) Flexible connections between cylinders and distribution piping 
of fixed Halon fire extinguishing systems must be:
    (i) Visually inspected for damage, corrosion, or deterioration every 
year and replaced if found unserviceable; and
    (ii) Inspected and tested in accordance with NFPA 12A, paragraph 
6.3.1 (incorporated by reference, see Sec. 147.7) except that 
hydrostatic testing must be performed every 12 years instead of every 5 
years.
    (7) During any inspection, cylinders must be removed from service if 
they:
    (i) Leak;
    (ii) Are dented, bulging, severely corroded, or otherwise in a 
weakened condition; or
    (iii) Have been involved in a fire.
    (c) Cylinders that have contained carbon dioxide or Halon and have 
not been tested within 5 years must not be used to contain another 
compressed gas onboard a vessel, unless the cylinder is retested and re-
marked in accordance with Sec. 147.60(a)(3) and (4).

[USCG-2012-0196, 81 FR 48272, July 22, 2016]



Sec. 147.66  Inert gas fire extinguishing systems.

    (a) Inert gas cylinders forming part of a clean agent fixed fire 
extinguishing system must be retested every five years, except that 
cylinders with a water capacity of 125 pounds or less may be retested 
every 10 years in accordance with 49 CFR 180.209(b).
    (b) An inert gas cylinder must be removed from service if it:
    (1) Leaks;
    (2) Is dented, bulging, severely corroded, or otherwise weakened;
    (3) Has lost more than 5 percent of its tare weight; or
    (4) Has been involved in a fire.
    (c) Flexible connections between cylinders and discharge piping for 
fixed inert gas fire extinguishing systems must be renewed or retested 
in accordance with section 7.3 of NFPA 2001 (incorporated by reference, 
see Sec. 147.7).

[USCG-2006-24797, 77 FR 33886, June 7, 2012]



Sec. 147.67  Halocarbon fire extinguishing systems.

    (a) Each halocarbon cylinder forming part of a clean agent fixed 
fire extinguishing system must be:
    (1) Retested at least once every 12 years and before recharging if 
it has been discharged and more than five years have elapsed since the 
last test; or
    (2) As an alternative, a cylinder conforming to the requirements of 
49 CFR 180.209(g) may be given the complete external visual inspection 
in lieu of hydrostatic testing provided for by that section.
    (b) A halocarbon cylinder must be removed from service if it:
    (1) Leaks;
    (2) Is dented, bulging, severely corroded, or otherwise weakened;
    (3) Has lost more than 5 percent of its tare weight; or
    (4) Has been involved in a fire.
    (c) Flexible connections between cylinders and discharge piping for 
halocarbon fire extinguishing systems must be renewed or retested in 
accordance with section 7.3 of NFPA 2001 (incorporated by reference, see 
Sec. 147.7).

[USCG-2006-24797, 77 FR 33886, June 7, 2012]



Sec. 147.70  Acetylene.

    (a) Seventeen cubic meters (600 standard cubic feet) or less of 
acetylene may be stowed on or below decks on any vessel.
    (b) More than 17 m\3\ (600 standard cubic feet) of acetylene may be 
on board a vessel engaged in industrial operations, if it is stowed on 
deck.

[[Page 58]]



Sec. 147.85  Oxygen.

    (a) Eighty five cubic meters (3000 standard cubic feet) or less of 
oxygen may be on board any vessel.
    (b) More than 85 m\3\ (3000 standard cubic feet) of oxygen may be on 
board a vessel engaged in industrial operations, if it is stowed on deck 
or in a well ventilated space.



Sec. 147.90  Refrigerants.

    (a) Only refrigerants listed in ANSI/ASHRAE 34-78 may be carried as 
ships' stores.
    (b) Refrigerants contained in a vessel's operating system are not 
considered as being carried as ship's stores.



Sec. 147.95  Explosives.

    (a) Explosives--general. Except as provided for elsewhere in this 
subchapter, explosives, as defined in 49 CFR 173.50, which are hazardous 
ships' stores must be stowed in accordance with 49 CFR 176.116 through 
176.138.
    (b) Small arms ammunition. (1) No person shall bring, have in their 
possession, or use on board a vessel any small arms ammunition, except 
by express permission of the master of the vessel.
    (2) All small arms ammunition must be stowed and locked in a metal 
closed cargo transport unit for Class 1 (explosive) materials as defined 
in 49 CFR 176.2. The key to the cargo transport unit must be kept in the 
possession of the master or a person designated by the master.
    (c) Ships' signals and emergency equipment. (1) Explosive ships' 
signals and emergency equipment, including pyrotechnic distress signals 
and line throwing equipment, must be stowed in watertight containers or 
wood lined magazine chests.
    (2) All pyrotechnic distress signals, rockets, and line throwing 
guns must be stowed in accordance with the requirements of 49 CFR 
176.140 through 176.146.

[CGD 84-044, 53 FR 7749, Mar. 10, 1988, as amended by CGD 92-100, 59 FR 
17001, Apr. 11, 1994; CGD 97-057, 62 FR 51048, Sept. 30, 1997; USCG-
2013-0671, 78 FR 60154, Sept. 30, 2013]



Sec. 147.100  Radioactive materials.

    (a) Radioactive materials must not be brought on board, used in any 
manner, or stored on the vessel, unless the use of the materials is 
authorized by a current license issued by the Nuclear Regulatory 
Commission (NRC) under 10 CFR parts 30 and 34.
    (b) Stowage of radioactive materials must conform to the 
requirements of the NRC license.



Sec. 147.105  Anesthetics, drugs, and medicines.

    Anesthetics, drugs, and medicines must be stowed and dispensed in 
accordance with the DHHS Publication No. (PHS) 84-2024.



PART 147A_INTERIM REGULATIONS FOR SHIPBOARD FUMIGATION--Table of Contents



                                 General

Sec.
147A.1  Purpose.
147A.3  Applicability.
147A.5  General requirement.
147A.6  Right of appeal
147A.7  Definitions.
147A.9  Persons in charge of fumigation and the vessel; designation.
147A.10  Notice to Captain of the Port.

                            Before Fumigation

147A.11  Person in charge of fumigation; before fumigation.
147A.13  Person in charge of the vessel; before fumigation.

                            During Fumigation

147A.21  Person in charge of fumigation; during fumigation.
147A.23  Person in charge of vessel; during fumigation.
147A.25  Entry.

                            After Ventilation

147A.31  Removal of fumigation material and warning signs.

              Special Requirements for Flammable Fumigants

147A.41  Person in charge of fumigation; flammable fumigants.
147A.43  Other sources of ignition; flammable fumigants.

    Authority: 46 U.S.C. 5103; Department of Homeland Security 
Delegation No. 0170.1.

    Source: CGD 74-144, 39 FR 32998, Sept. 13, 1974, unless otherwise 
noted.

[[Page 59]]

                                 General



Sec. 147A.1  Purpose.

    The purpose of this part is to prescribe the requirements for 
shipboard fumigation that are critical for the health and safety of the 
crew and any other person who is on board a vessel during fumigation. 
These are interim rules pending further study and promulgation of 
comprehensive regulations on shipboard fumigation.



Sec. 147A.3  Applicability.

    This part prescribes the rules for shipboard fumigation on vessels 
to which 49 CFR parts 171-179 apply under 49 CFR 176.5.

[CGD 86-033, 53 FR 36026, Sept. 16, 1988]



Sec. 147A.5  General requirement.

    No person may cause or authorize shipboard fumigation contrary to 
the rules in this part.



Sec. 147A.6  Right of appeal.

    Any person directly affected by a decision or action taken under 
this part, by or on behalf of the Coast Guard, may appeal therefrom in 
accordance with subpart 1.03 of this chapter.

[CGD 88-033, 54 FR 50381, Dec. 6, 1989]



Sec. 147A.7  Definitions.

    As used in this part:
    (a) Qualified person means a person who has experience with the 
particular fumigant or knowledge of its properties and is familiar with 
fumigant detection equipment and procedures, or an applicator who is 
certified by the Environmental Protection Agency if his certification 
covers the fumigant that is used.
    (b) Fumigant means a substance or mixture of substances that is a 
gas or is rapidly or progressively transformed to the gaseous state 
though some nongaseous or particulate matter may remain in the space 
that is fumigated.
    (c) Fumigation means the application of a fumigant on board a vessel 
to a specific treatment space.



Sec. 147A.9  Persons in charge of fumigation and the vessel; designation.

    (a) The person, including any individual, firm, association, 
partnership, or corporation, that is conducting a fumigation operation 
shall designate a person in charge of fumigation for each operation.
    (b) The operator of each vessel shall designate a person in charge 
of the vessel for each fumigation operation.



Sec. 147A.10  Notice to Captain of the Port.

    Unless otherwise authorized by the Captain of the Port, at least 24 
hours before fumigation the operator of the vessel shall notify the 
Coast Guard Captain of the Port, for the area where the vessel is to be 
fumigated, of the time and place of the fumigation, and the name of the 
vessel that is to be fumigated.

                            Before Fumigation



Sec. 147A.11  Person in charge of fumigation; before fumigation.

    (a) The person in charge of fumigation shall notify the person in 
charge of the vessel of:
    (1) The space that is to be fumigated;
    (2) The name, address, and emergency telephone number of the 
fumigation company;
    (3) The dates and times of fumigation;
    (4) The characteristics of the fumigant;
    (5) The spaces that are determined to be safe for occupancy 
paragraph (b)(1)(i) of this section;
    (6) The maximum allowable concentration of fumigant in spaces, if 
any, that are determined to be safe for occupancy under paragraph 
(b)(1)(i) of this section;
    (7) The symptoms of exposure to the fumigant; and
    (8) Emergency first aid treatment for exposure to the fumigant.
    (b) The person in charge of fumigation shall ensure that:
    (1) A marine chemist or other qualified person who has knowledge of 
and experience in shipboard fumigation evaluates the vessel's 
construction and configuration and determines:
    (i) Which spaces, if any, are safe for occupancy during fumigation; 
and
    (ii) The intervals that inspections must be made under 
Sec. 147A.21(a)(1);
    (2) No persons or domestic animals are in the space that is to be 
fumigated

[[Page 60]]

or the spaces that are designated as unsafe for occupancy under 
paragraph (b)(1)(i) of this section;
    (3) There is proper and secure sealing to confine the fumigant to 
the space that is to be fumigated, including blanking off and sealing 
any ventilation ducts and smoke detectors;
    (4) The personal protection and fumigation detection equipment for 
the fumigant that is to be used is on board the vessel;
    (5) Warning signs are:
    (i) Posted upon all gangplanks, ladders, and other points of access 
to the vessel;
    (ii) Posted on all entrances to the spaces that are designated as 
unsafe for occupancy under paragraph (b)(1)(i) of this section; and
    (iii) In accordance with 49 CFR 173.9(c) or section 8.10 of the 
General Introduction of the International Maritime Dangerous Goods Code. 
The word ``unit'' on the warning sign may be replaced with ``vessel,'' 
``barge,'' ``hold,'' or ``space,'' as appropriate.
    (6) Watchmen are stationed at all entrances to:
    (i) Spaces that are not determined to be safe for occupancy under 
paragraph (b)(1)(i) of this section; or
    (ii) The vessel, if no spaces are determined to be safe for 
occupancy under paragraph (b)(1)(i) of this section.

[CGD 74-144, 39 FR 32998, Sept. 13, 1974; 39 FR 37771, Oct. 24, 19745; 
CGD 96-041, 61 FR 50731, Sept. 27, 1996; CGD 97-057, 62 FR 51048, Sept. 
30, 1997]



Sec. 147A.13  Person in charge of the vessel; before fumigation.

    (a) After notice under Sec. 147A.11 (a)(5), the person in charge of 
the vessel shall notify the crew and all other persons on board the 
vessel who are not participating in the fumigation of the spaces that 
are determined to be safe for occupancy under Sec. 147A.11(b)(1)(i).
    (b) If no spaces are determined to be safe for occupancy under 
Sec. 147A.11 (b)(1)(i), the person in charge of the vessel shall ensure 
that the crew and all persons who are not participating in the 
fumigation leave the vessel and remain away during fumigation.

                            During Fumigation



Sec. 147A.21  Person in charge of fumigation; during fumigation.

    (a) Until ventilation begins, or until the vessel leaves port, the 
person in charge of fumigation shall ensure that a qualified person 
inspects the vessel as follows:
    (1) He must use detection equipment for the fumigant that is used to 
ensure that the fumigant is confined to:
    (i) The space that is fumigated, if partial occupancy is allowed 
under Sec. 147A.11(b)(1)(i); or
    (ii) The vessel, if no space is determined to be safe for occupancy 
under Sec. 147A.11(b)(1)(i).
    (2) He must make inspections at the intervals that are determined to 
be necessary by the marine chemist or qualified person under 
Sec. 147A.11 (b)(1)(ii).
    (b) If leakage occurs, the person in charge of fumigation shall:
    (1) Notify the person in charge of the vessel that there is leakage;
    (2) Ensure that all necessary measures are taken for the health and 
safety of any person; and
    (3) Notify the person in charge of the vessel when there is no 
danger to the health and safety of any person.
    (c) After the exposure period, if the vessel is in port, the person 
in charge of fumigation shall ensure that fumigators or other qualified 
persons ventilate the space that is fumigated as follows:
    (1) Hatch covers and vent seals must be removed, other routes of 
access to the atmosphere must be opened, and if necessary, mechanical 
ventilation must be used.
    (2) Personal protection equipment that is appropriate for the 
fumigant that is used must be worn.
    (d) If ventilation is completed before the vessel leaves port, the 
person in charge of fumigation shall:
    (1) Ensure that a qualified person, who is wearing the personal 
protection equipment for the fumigant that is used if remote detection 
equipment is not used, tests the space that is fumigated and determines 
if there is any danger to the health and safety of any

[[Page 61]]

person, including a danger from fumigant that may be retained in bagged, 
baled, or other absorbent cargo;
    (2) Notify the person in charge of the vessel of this determination; 
and
    (3) If it is determined that there is a danger:
    (i) Ensure that all measures are taken that are necessary for the 
health and safety of all persons; and
    (ii) Notify the person in charge of the vessel when there is no 
danger to the health and safety of any person.



Sec. 147A.23  Person in charge of vessel; during fumigation.

    (a) The person in charge of the vessel shall ensure that the crew 
and all other persons on board the vessel who are not participating in 
the fumigation restrict their movement during fumigation to the spaces 
that are determined to be safe for occupancy under 
Sec. 147A.11(b)(1)(i).
    (b) The person in charge of the vessel shall ensure that the crew 
and all other persons who are not participating in the fumigation follow 
any instructions of the person in charge of fumigation that are issued 
under Sec. 147A.21(b)(2) or (d)(3)(i) and that the vessel does not leave 
port if he is notified under:
    (1) Section 147A.21(b)(1) that there is leakage, unless the person 
in charge of fumigation notifies him under Sec. 147A.21(b)(3) of this 
subpart that there is no danger; or
    (2) Section 147A.21(d)(2) that there is a danger after ventilation, 
unless the person in charge of the fumigation notifies him under 
Sec. 147A.21(d)(3)(ii) that there is no danger.
    (c) If fumigation is not completed before the vessel leaves port, 
the person in charge of the vessel shall ensure that personal protection 
and fumigant detection equipment for the fumigant that is used is on 
board the vessel.
    (d) If the vessel leaves port before fumigation is completed, the 
person in charge of the vessel shall ensure that a qualified person 
makes periodic inspections until ventilation is completed and this 
person shall use detection equipment for the fumigant that is used to 
determine if:
    (1) There is leakage of fumigant; or
    (2) There is a concentration of fumigant that is a danger to the 
health and safety of any person.
    (e) If the qualified person determines under paragraph (d) of this 
section that there is leakage or a concentration of fumigant that is a 
danger to the health and safety of any person, the person in charge of 
the vessel shall take all measures that are, in his discretion, 
necessary to ensure health and safety of all persons who are on board 
the vessel. If the danger is due to leakage, he shall also ensure that 
qualified persons immediately ventilate in accordance with paragraphs 
(c)(1) and (2) of Sec. 147A.21.
    (f) If the vessel leaves port during the exposure period, the person 
in charge of the vessel shall ensure that the space that is fumigated is 
ventilated by qualified persons after the exposure period in accordance 
with paragraphs (c) (1) and (2) of Sec. 147A.21.
    (g) If ventilation is completed after the vessel leaves port, the 
person in charge of the vessel shall ensure that a qualified person, who 
is wearing the personal protection equipment for the fumigant that is 
used if remote detection equipment is not used, tests the space that is 
fumigated to determine if there is a danger to the health and safety of 
any person, including a danger from fumigant that may be retained in 
bagged, baled, or other absorbent cargo. If the qualified person 
determines that there is a danger, the person in charge of the vessel 
shall take all measures that are, in his discretion, necessary to ensure 
the health and safety of all persons who are on board the vessel.



Sec. 147A.25  Entry.

    (a) No person may enter the spaces that immediately adjoin the space 
that is fumigated during fumigation unless entry is for emergency 
purposes or the space is tested and declared safe for human occupancy by 
a marine chemist or other qualified person and is inspected under 
Sec. 147A.21(a)(2) or Sec. 147A.23(d).
    (b) If entry is made for emergency purposes:
    (1) No person may enter the space that is fumigated or any adjoining 
spaces during fumigation unless he

[[Page 62]]

wears the personal protection equipment for the fumigant that is in use;
    (2) No person may enter the space that is fumigated unless the entry 
is made by a two person team; and
    (3) No person may enter the space that is fumigated unless he wears 
a lifeline and safety harness and each life-line is tended by a person 
who is outside the space and who is wearing the personal protection 
equipment for the fumigant that is in use.

                            After Ventilation



Sec. 147A.31  Removal of fumigation material and warning signs.

    After ventilation is completed and a marine chemist or other 
qualified person determines that there is no danger to the health and 
safety of any person under Sec. 147A.21(d) or Sec. 147A.23(g), the 
person in charge of fumigation, or, if the vessel has left port, the 
person in charge of the vessel, shall ensure that all warning signs are 
removed and fumigation containers and materials are removed and disposed 
of in accordance with the manufacturer's recommendations.

              Special Requirements for Flammable Fumigants



Sec. 147A.41  Person in charge of fumigation; flammable fumigants.

    (a) The person in charge of fumigation shall ensure that:
    (1) Before the space that is to be fumigated is sealed, it is 
thoroughly cleaned, and all refuse, oily waste, and other combustible 
material is removed;
    (2) Before fumigation, all fire fighting equipment, including 
sprinklers and fire pumps, is in operating condition; and
    (3) Before and during fumigation, electrical circuits that are in 
the space that is fumigated are de-energized.
    (b) [Reserved]



Sec. 147A.43  Other sources of ignition; flammable fumigants.

    While the space that is fumigated is being sealed or during 
fumigation, no person may use matches, smoking materials, fires, open 
flames, or any other source of ignition in any spaces that are not 
determined to be safe for occupancy under Sec. 147A.11(b)(1)(i).



PART 148_CARRIAGE OF BULK SOLID MATERIALS THAT REQUIRE SPECIAL HANDLING
--Table of Contents



                            Subpart A_General

Sec.
148.1  Purpose and applicability.
148.2  Responsibility and compliance.
148.3  Definitions.
148.5  Alternative procedures.
148.7  OMB control numbers assigned under the Paperwork Reduction Act.
148.8  Incorporation by reference.
148.9  Right of appeal.
148.10  Permitted materials.
148.11  Hazardous or potentially dangerous characteristics.
148.12  Assignment and certification.

                        Subpart B_Special Permits

148.15  Petition for a special permit.
148.20  Deadlines for submission of petition and related requests.
148.21  Necessary information.
148.25  Activities covered by a special permit.
148.26  Standard conditions for special permits.
148.30  Records of special permits issued.

              Subpart C_Minimum Transportation Requirements

148.50  Cargoes subject to this subpart.
148.51  Temperature readings.
148.55  International shipments.
148.60  Shipping papers.
148.61  Emergency response information.
148.62  Location of shipping papers and emergency response information.
148.70  Dangerous cargo manifest; general.
148.71  Information included in the dangerous cargo manifest.
148.72  Dangerous cargo manifest; exceptions.
148.80  Supervision of cargo transfer.
148.85  Required equipment for confined spaces.
148.86  Confined space entry.
148.90  Preparations before loading.
148.100  Log book entries.
148.110  Procedures followed after unloading.
148.115  Report of incidents.

                    Subpart D_Stowage and Segregation

148.120  Stowage and segregation requirements.
148.125  Stowage and segregation for materials of Class 4.1.
148.130  Stowage and segregation for materials of Class 4.2.
148.135  Stowage and segregation for materials of Class 4.3.

[[Page 63]]

148.140  Stowage and segregation for materials of Class 5.1.
148.145  Stowage and segregation for materials of Class 7.
148.150  Stowage and segregation for materials of Class 9.
148.155  Stowage and segregation for potentially dangerous materials.

          Subpart E_Special Requirements for Certain Materials

148.200  Purpose.
148.205  Ammonium nitrate and ammonium nitrate fertilizers.
148.220  Ammonium nitrate-phosphate fertilizers.
148.225  Calcined pyrites (pyritic ash, fly ash).
148.227  Calcium nitrate fertilizers.
148.230  Calcium oxide (lime, unslaked).
148.235  Castor beans.
148.240  Coal.
148.242  Copra.
148.245  Direct reduced iron (DRI); lumps, pellets, and cold-molded 
          briquettes.
148.250  Direct reduced iron (DRI); hot-molded briquettes.
148.255  Ferrosilicon, aluminum ferrosilicon, and aluminum silicon 
          containing more than 30% but less than 90% silicon.
148.260  Ferrous metal.
148.265  Fish meal or fish scrap.
148.270  Hazardous substances.
148.275  Iron oxide, spent; iron sponge, spent.
148.280  Magnesia, unslaked (lightburned magnesia, calcined magnesite, 
          caustic calcined magnesite).
148.285  Metal sulfide concentrates.
148.290  Peat moss.
148.295  Petroleum coke, calcined or uncalcined, at 55  deg.C (131 
          deg.F) or above.
148.300  Radioactive materials.
148.310  Seed cake.
148.315  Sulfur.
148.320  Tankage; garbage tankage; rough ammonia tankage; or tankage 
          fertilizer.
148.325  Wood chips; wood pellets; wood pulp pellets.
148.330  Zinc ashes; zinc dross; zinc residues; zinc skimmings.

                Subpart F_Additional Special Requirements

148.400  Applicability.
148.405  Sources of ignition.
148.407  Smoking.
148.410  Fire hoses.
148.415  Toxic gas analyzers.
148.420  Flammable gas analyzers.
148.435  Electrical circuits in cargo holds.
148.445  Adjacent spaces.
148.450  Cargoes subject to liquefaction.

    Authority: 33 U.S.C. 1602; E.O. 12234, 45 FR 58801, 3 CFR, 1980 
Comp., p. 277; 46 U.S.C. 3306, 5111; 49 U.S.C. 5103; Department of 
Homeland Security Delegation No. 0170.1.

    Source: 75 FR 64591, Oct. 19, 2010, unless otherwise noted.

    Editorial Note: Nomenclature changes to part 148 appear by USCG-
2012-0832, 77 FR 59783, Oct. 1, 2012.



                            Subpart A_General



Sec. 148.1  Purpose and applicability.

    (a) This part prescribes special handling procedures for certain 
solid materials that present hazards when transported in bulk by vessel.
    (b) Except as noted in paragraph (c) of this section, this part 
applies to all domestic and foreign vessels in the navigable waters of 
the United States that transport bulk solid materials requiring special 
handling.
    (c) This part does not apply to an unmanned barge on a domestic 
voyage carrying a Potentially Dangerous Material (PDM) found in Table 
148.10 of this part. All barges on international voyages must follow the 
requirements for PDM.
    (d) The regulations in this part have preemptive impact over State 
law on the same subject. The Coast Guard has determined, after 
considering the factors developed by the Supreme Court in U.S. v. Locke, 
529 U.S. 89 (2000), that in directing the Secretary to regulate the safe 
transportation of hazardous material and the safety of individuals and 
property on board vessels subject to inspection, as well as the 
provision of loading information, Congress intended to preempt the field 
of safety standards for solid materials requiring special handling when 
transported in bulk on vessels.



Sec. 148.2  Responsibility and compliance.

    Each master of a vessel, person in charge of a barge, owner, 
operator, shipper, charterer, or agent must ensure compliance with this 
part. These persons are also responsible for communicating requirements 
to every person performing any function covered by this part.



Sec. 148.3  Definitions.

    As used in this part--
    A-60 class division means a division as defined in Sec. 32.57-5 of 
this chapter.

[[Page 64]]

    Adjacent space means any enclosed space on a vessel, such as a cargo 
hold, cargo compartment, accommodation space, working space, storeroom, 
passageway, or tunnel, that shares a common bulkhead or deck with a 
hatch, door, scuttle, cable fitting or other penetration, with a cargo 
hold or compartment containing a material listed in Table 148.10 of this 
part.
    Away from means a horizontal separation of at least 3 meters (10 
feet) projected vertically is maintained between incompatible materials 
carried in the same hold or on deck.
    Bulk applies to any solid material, consisting of a combination of 
particles, granules, or any larger pieces of material generally uniform 
in composition, that is loaded directly into the cargo spaces of a 
vessel without any intermediate form of containment.
    Bulk Cargo Shipping Name or BCSN identifies a bulk solid material 
during transport by sea. When a cargo is listed in this Part, the BCSN 
of the cargo is identified by Roman type and is listed in Column 1 of 
Table 148.10 of this part. When the cargo is a hazardous material, as 
defined in 49 CFR part 173, the proper shipping name of that material is 
the BCSN.
    Cold-molded briquettes are briquettes of direct reduced iron (DRI) 
that have been molded at a temperature of under 650  deg.C (1,202 
deg.F) or that have a density of under 5.0 g/cm3;.
    Commandant (CG-ENG-5) means the Chief, Hazardous Materials Division 
of the Office of Design and Engineering Systems. The mailing address is: 
Commandant (CG-ENG-5), Attn: Hazardous Materials Division, U.S. Coast 
Guard Stop 7509, 2703 Martin Luther King Jr. Avenue SE., Washington, DC 
20593-7509; telephone 202-372-1420 or email [email protected]
    Compartment means any space on a vessel that is enclosed by the 
vessel's decks and its sides or permanent steel bulkheads.
    Competent authority means a national agency responsible under its 
national law for the control or regulation of a particular aspect of the 
transportation of hazardous materials.
    Confined space means a cargo hold containing a material listed in 
Table 148.10 of this part or an adjacent space not designed for human 
occupancy.
    Domestic voyage means transportation between places within the 
United States other than through a foreign country.
    Hazard class means the category of hazard assigned to a material 
under this part and 49 CFR parts 171 through 173.

                        Hazard Class Definitions

 Hazard Classes Used in This Part Are Defined in the Following Sections
                               of Title 49
------------------------------------------------------------------------
                Division No. (if                              Reference
  Class No.           any)                Description          (49 CFR)
------------------------------------------------------------------------
1............  1.1, 1.2, 1.3,      Explosives..............  Sec.  173.5
                1.4, 1.5, 1.6.                                         0
2............  2.1, 2.2, 2.3.....  Flammable Gas, Non-       Sec.  173.1
                                    Flammable Compressed              15
                                    Gas, Poisonous Gas.
3............  ..................  Flammable and             Sec.  173.1
                                    Combustible Liquid.               20
4............  4.1, 4.2, 4.3.....  Flammable Solid,          Sec.  173.1
                                    Spontaneously                     24
                                    Combustible Material,
                                    Dangerous When Wet
                                    Material.
5............  5.1...............  Oxidizer................  Sec.  173.1
                                                                      27
5............  5.2...............  Organic Peroxide........  Sec.  173.1
                                                                      28
6............  6.1...............  Poisonous Materials.....  Sec.  173.1
                                                                      32
6............  6.2...............  Infectious Substance....  Sec.  173.1
                                                                      34
7............  ..................  Radioactive Material....  Sec.  173.4
                                                                      03
8............  ..................  Corrosive Material......  Sec.  173.1
                                                                      36
9............  ..................  Miscellaneous Hazardous   Sec.  173.1
                                    Material.                         40
------------------------------------------------------------------------

    Hazardous substance is a hazardous substance as defined in 49 CFR 
171.8.
    Hold means a compartment below deck that is used exclusively for the 
stowage of cargo.
    Hot-molded briquettes are briquettes of DRI that have been molded at 
a temperature of 650  deg.C (1,202  deg.F) or higher, and that have a 
density of 5.0 g/cm3 (312 lb/ft3) or greater.

[[Page 65]]

    IMSBC Code means the English version of the ``International Maritime 
Solid Bulk Cargoes Code'' published by the International Maritime 
Organization (incorporated by reference, see Sec. 148.8).
    Incompatible materials means two materials whose stowage together 
may result in undue hazards in the case of leakage, spillage, or other 
accident.
    International voyage means voyages--
    (1) Between any place in the United States and any place in a 
foreign country;
    (2) Between places in the United States through a foreign country; 
or
    (3) Between places in one or more foreign countries through the 
United States.
    Lower flammability limit or LFL means the lowest concentration of a 
material or gas that will propagate a flame. The LFL is usually 
expressed as a percent by volume of a material or gas in air.
    Master means the officer having command of a vessel. The functions 
assigned to the master in this part may also be performed by a 
representative of the master or by a person in charge of a barge.
    Material safety data sheet or MSDS is as defined in 29 CFR 
1910.1200.
    Person in charge of a barge means an individual designated by the 
owner or operator of a barge to have charge of the barge.
    Potentially Dangerous Material or PDM means a material that does not 
fall into a particular hazard class but can present a danger when 
carried in bulk aboard a vessel. The dangers often result from the 
material's tendency to self-heat or cause oxygen depletion. Materials 
that present a potential danger due solely to their tendency to shift in 
the cargo hold are not PDMs. For international shipments prepared in 
accordance with the IMSBC Code (incorporated by reference, see 
Sec. 148.8), equivalent terminology to PDM is Material Hazardous only in 
Bulk (MHB).
    Readily combustible material means a material that may not be a 
hazardous material but that can easily ignite and support combustion. 
Examples are wood, straw, vegetable fibers, and products made from these 
materials, and coal lubricants and oils. The term does not include 
packaging material or dunnage.
    Reportable quantity or RQ means the quantity of a hazardous 
substance spilled or released that requires a report to the National 
Response Center. The specific RQs for each hazardous substance are 
available in 49 CFR 172.101, Appendix A.
    Responsible person means a knowledgeable person who the master of a 
vessel or owner or operator of a barge makes responsible for all 
decisions relating to his or her specific task.
    Seed cake means the residue remaining after vegetable oil has been 
extracted by a solvent or mechanical process from oil-bearing seeds, 
such as coconuts, cotton seed, peanuts, and linseed.
    Shipper means any person by whom, or in whose name, or on whose 
behalf, a contract of carriage of goods by sea has been concluded with a 
carrier; or any person by whom or in whose name, or on whose behalf, the 
goods are actually delivered to the carrier in relation to the contract 
of carriage by sea.
    Shipping paper means a shipping order, bill of lading, manifest, or 
other shipping document serving a similar purpose.
    Stowage factor means the volume in cubic meters of 1,000 kilograms 
(0.984 long tons) of a bulk solid material.
    Threshold limit value or TLV means the time-weighted average 
concentration of a material that the average worker can be exposed to 
over a normal eight-hour working day, day after day, without adverse 
effect. This is a trademark term of the American Conference of 
Governmental Industrial Hygienists (ACGIH).
    Transported includes the various operations associated with cargo 
transportation, such as loading, off-loading, handling, stowing, 
carrying, and conveying.
    Trimming means any leveling of a cargo within a cargo hold or 
compartment, either partial or total.
    Tripartite agreement means an agreement between the national 
administrations of the port of loading, the port of discharge, and the 
flag state of the vessel, on the conditions of carriage of a cargo.

[[Page 66]]

    Ventilation means exchange of air from outside to inside a cargo 
space and includes the following types:
    (1) Continuous ventilation means ventilation that is operating at 
all times. Continuous ventilation may be either natural or mechanical;
    (2) Mechanical ventilation means power-generated ventilation;
    (3) Natural ventilation means ventilation that is not power-
generated; and
    (4) Surface ventilation means ventilation of the space above the 
cargo. Surface ventilation may be either natural or mechanical.
    Vessel means a cargo ship or barge.

[75 FR 64591, Oct. 19, 2010, as amended by USCG-2013-0671, 78 FR 60154, 
Sept. 30, 2013]



Sec. 148.5  Alternative procedures.

    (a) The Commandant (CG-ENG-5) may authorize the use of an 
alternative procedure, including exemptions to the IMSBC Code 
(incorporated by reference, see Sec. 148.8), in place of any requirement 
of this part if it is demonstrated to the satisfaction of the Coast 
Guard that the requirement is impracticable or unnecessary and that an 
equivalent level of safety can be maintained.
    (b) Each request for authorization of an alternative procedure 
must--
    (1) Be in writing;
    (2) Name the requirement for which the alternative is requested; and
    (3) Contain a detailed explanation of--
    (i) Why the requirement is impractical or unnecessary; and
    (ii) How an equivalent level of safety will be maintained.



Sec. 148.7  OMB control numbers assigned under the Paperwork Reduction Act.

    The information collection requirements in this part are approved by 
the Office of Management and Budget, and assigned OMB control number 
1625-0025.



Sec. 148.8  Incorporation by reference.

    (a) Certain material is incorporated by reference into this part 
with the approval of the Director of the Federal Register under 5 U.S.C. 
552(a) and 1 CFR part 51. To enforce any edition other than that 
specified in this section, the Coast Guard must publish notice of change 
in the Federal Register and the material must be available to the 
public. All approved material is available for inspection at the 
National Archives and Records Administration (NARA). For information on 
the availability of this material at NARA, call 202-741-6030 or go to 
http://www.archives.gov/federal_register/code_of_federal_regulations/
ibr_locations.html. Also, it is available for inspection at the Coast 
Guard Headquarters. Contact Commandant (CG-ENG-5), Attn: Hazardous 
Materials Division, U.S. Coast Guard Stop 7509, 2703 Martin Luther King 
Jr. Avenue SE., Washington, DC 20593-7509. The material is also 
available from the sources listed in paragraphs (b) and (c) of this 
section.
    (b) International Maritime Organization (IMO), 4 Albert Embankment, 
London SE1 7SR, United Kingdom, + 44 (0)20 7735 7611, http://
www.imo.org.
    (1) International Maritime Solid Bulk Cargoes Code and Supplement, 
2009 edition (``IMSBC Code''), incorporation by reference, excluding 
supplemental materials, approved for Secs. 148.3; 148.5(a); 148.15(d); 
148.55(b); 148.205(b); 148.220(b) and (c); 148.240(h); 148.450(a), (d), 
and (g).
    (2) [Reserved]
    (c) United Nations Publications, 2 United Nations Plaza, Room DC2-
853, Dept. C089, New York, NY 10017, (800) 253-9646, http://unp.un.org.
    (1) Recommendations on the Transport of Dangerous Goods, Manual of 
Tests and Criteria, Fifth revised edition (2009) (``UN Manual of Tests 
and Criteria''), incorporation by reference approved for 
Secs. 148.205(b); 148.220(b) and (c).
    (2) [Reserved]

[75 FR 64591, Oct. 19, 2010, as amended by USCG-2013-0671, 78 FR 60154, 
Sept. 30, 2013]



Sec. 148.9  Right of appeal.

    Any person directly affected by enforcement of this part by or on 
behalf of the Coast Guard may appeal the decision or action under 
Subpart 1.03 of this chapter.



Sec. 148.10  Permitted materials.

    (a) A material listed in Table 148.10 of this section may be 
transported as a

[[Page 67]]

bulk solid cargo on a vessel if it is carried according to this part. A 
material that is not listed in Table 148.10 of this section, but which 
is hazardous or a Potentially Dangerous Material (PDM), requires a 
Special Permit under Sec. 148.15 of this part to be transported on the 
navigable waters of the United States.
    (b) For each listed material, Table 148.10 identifies the hazard 
class and gives the BCSN or directs the user to the preferred BCSN. In 
addition, the table lists specific hazardous or potentially dangerous 
characteristics associated with each material and specifies or 
references detailed special requirements in this part pertaining to the 
stowage or transport of specific bulk solid materials. The column 
descriptions for Table 148.10 are defined as follows:
    (1) Column 1: Bulk Solid Material Descriptions and Bulk Cargo 
Shipping Names (BCSN). Column 1 lists the bulk solid material 
descriptions and the BCSNs of materials designated as hazardous or PDM. 
BCSNs are limited to those shown in Roman type. Trade names and 
additional descriptive text are shown in italics.
    (2) Column 2: I.D. Number. Column 2 lists the identification number 
assigned to each BCSN associated with a hazardous material. Those 
preceded by the letters ``UN'' are associated with BCSNs considered 
appropriate for international voyages as well as domestic voyages. Those 
preceded by the letters ``NA'' are associated with BCSNs not recognized 
for international voyages, except to and from Canada.
    (3) Column 3: Hazard Class or Division. Column 3 designates the 
hazard class or division, or PDM, as appropriate, corresponding to each 
BCSN.
    (4) Column 4: References. Column 4 refers the user to the preferred 
BCSN corresponding to bulk solid material descriptions listed in Column 
1.
    (5) Column 5: Hazardous or Potentially Dangerous Characteristics. 
Column 5 specifies codes for hazardous or potentially dangerous 
characteristics applicable to specific hazardous materials or PDMs. 
Refer to Sec. 148.11 of this part for the meaning of each code.
    (6) Column 6: Other Characteristics. Column 6 contains other 
pertinent characteristics applicable to specific bulk solid materials 
listed in Column 1.
    (7) Column 7: Special Requirements. Column 7 specifies the 
applicable sections of Part 148 of this chapter that contain detailed 
special requirements pertaining to stowage and/or transportation of 
specific bulk solid materials in this part. This column is completed in 
a manner which indicates that ``Sec. 148.'' precedes the designated 
numerical entry.
    (c) The following requirements apply to combinations of bulk solids 
carried at the same time and in the same compartment or hold:

------------------------------------------------------------------------
  Combinations of bulk solid materials             Requirements
------------------------------------------------------------------------
(1) Material listed in Table 148.10      Requirements specified in Table
 carried with any other non-hazardous     148.10 for the listed
 bulk solid material.                     material.
(2) Material carried under Special       Requirements specified in the
 Permit with any non-hazardous bulk       Special Permit.
 solid material.
(3) Two or more materials listed in      Must apply for a Special
 Table 148.10.                            Permit.
------------------------------------------------------------------------

    (d) An owner, agent, master, operator, or person in charge of a 
vessel or barge carrying materials listed in Table 148.10 of this 
section must follow the requirements contained in 46 CFR part 4 for 
providing notice and reporting of marine casualties and retaining voyage 
records.

[[Page 68]]



                                                   Table 148.10--Bulk Solid Hazardous Materials Table
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                            Hazardous or
                                                     Hazard                                  potentially                                    Special
 Bulk solid material descriptions and   I.D. No.    class or          References              dangerous        Other characteristics      requirements
      bulk cargo shipping names                     division                               characteristics                             (Sec.  148.* * *)
                                                                                         (see Sec.  148.11)
--------------------------------------------------------------------------------------------------------------------------------------------------------
(1)                                          (2)          (3)  (4).....................                 (5)  (6).....................               (7)
--------------------------------------------------------------------------------------------------------------------------------------------------------
Aluminum Ferrosilicon Powder.........     UN1395     4.3, 6.1    ......................                2, 3  Fine powder or            135, 255, 405(b),
                                                                                                              briquettes.                 407, 415(a) &
                                                                                                                                       (e), 420(b), 445
Aluminum Nitrate.....................     UN1438          5.1    ......................                   4  Colorless or white                     140
                                                                                                              crystals.
Aluminum Silicon Powder, Uncoated....     UN1398          4.3    ......................                2, 3    ......................  135, 255, 405(b),
                                                                                                                                       407 415(a) & (e),
                                                                                                                                            420(b), 445
Aluminum Smelting By-products or          UN3170          4.3    ......................             1, 2, 3  Includes aluminum dross,      135, 405(b),
 Aluminum Re-melting Byproducts.                                                                              residues, spent               420(b), 445
                                                                                                              cathodes, spent
                                                                                                              potliner, and skimmings.
Ammonium Nitrate.....................     UN1942          5.1    ......................               5, 27    ......................  140, 205, 405(a),
                                                                                                                                               407, 410
Ammonium Nitrate Based Fertilizer....     UN2067          5.1    ......................               5, 27    ......................  140, 205, 405(a),
                                                                                                                                               407, 410
Ammonium Nitrate Based Fertilizer....     UN2071            9    ......................                   6  Nitrogen, Phosphate, or   140, 220, 405(a),
                                                                                                              Potash.                               407
Barium Nitrate.......................     UN1466     5.1, 6.1    ......................                4, 7    ......................               140
Brown Coal Briquettes................  .........          PDM    ......................      11, 12, 14, 25    ......................  155, 240, 405(b),
                                                                                                                                           407, 415(b),
                                                                                                                                            420(a), 445
Calcium fluoride.....................  .........  ...........  See Fluorospar..........  ..................    ......................
Calcium Nitrate......................     UN1454          5.1    ......................                   4  White crystals or powder          140, 227
Calcium Oxide........................  .........  ...........  See Lime, Unslaked......  ..................    ......................
Castor Beans.........................     UN2969            9    ......................                  10  Whole beans.............          150, 235
Charcoal.............................  .........          PDM    ......................           1, 11, 12  Screenings, briquettes..               155
Chili Saltpeter......................  .........  ...........  See Sodium Nitrate......  ..................  ........................
Chilean Natural Nitrate..............  .........  ...........  See Sodium Nitrate......  ..................    ......................
Coal.................................  .........          PDM    ......................  11, 12, 13, 14, 25    ......................  155, 240, 405(b),
                                                                                                                                           407, 415(b),
                                                                                                                                          420(a) & (c),
                                                                                                                                               445, 450
Copra................................     UN1363          4.2    ......................              11, 12  Dry.....................          130, 242
Direct reduced iron (A) with not more  .........          PDM    ......................            1, 2, 12  Hot-molded briquettes...  155, 250, 420(b)
 than 5% fines.
Direct reduced iron (B) with not more  .........          PDM    ......................            1, 2, 12  Lumps, pellets, and cold- 155, 245, 405(b),
 than 5% fines.                                                                                               molded briquettes.       407, 420(b), 445
Environmentally Hazardous Substances,     UN3077            9  Hazardous substances                      15    ......................          150, 270
 Solid, n.o.s..                                                 listed in 40 CFR part
                                                                302.
Ferrophosphorous.....................  .........          PDM    ......................                2, 3  Including briquettes....  155, 415(e), 445

[[Page 69]]

 
Ferrosilicon with 30-90% silicon.....     UN1408     4.3, 6.1    ......................                2, 3    ......................  135, 255, 405(b),
                                                                                                                                          407, 415(a) &
                                                                                                                                       (e), 420(b), 445
Ferrosilicon with 25%-30% silicon or   .........          PDM    ......................  ..................    ......................  155, 255, 405(b),
 90% or more silicon.                                                                                                                    407, 415 (a) &
                                                                                                                                       (e), 420(b), 445
Ferrous Sulfate......................  .........  ...........  See Environmentally       ..................    ......................
                                                                Hazardous Substances,
                                                                Solid, n.o.s.
Ferrous Metal Borings, Shavings,          UN2793          4.2    ......................              11, 12    ......................          130, 260
 Turnings, or Cuttings.
Fish Meal Stabilized or Fish Scrap,       UN2216            9    ......................              11, 12  Ground and pelletized             150, 265
 Stabilized.                                                                                                  (mixture), anti-oxidant
                                                                                                              treated.
Fluorospar...........................  .........          PDM    ......................               8, 24    ......................  155, 440(a), 450
Garbage Tankage......................  .........  ...........  See Tankage.............  ..................    ......................
Iron Oxide, Spent or Iron Sponge,         UN1376          4.2    ......................       3, 11, 12, 14    ......................  130, 275, 415(c),
 Spent.                                                                                                                                  (d) & (f), 445
Iron Swarf...........................  .........  ...........  See Ferrous Metal         ..................    ......................
                                                                Borings, Shavings,
                                                                Turnings, or Cuttings.
Lead Nitrate.........................     UN1469     5.1, 6.1    ......................        4, 7, 22, 26    ......................          140, 270
Lignite..............................  .........  ...........  See Brown Coal            ..................    ......................
                                                                Briquettes.
Lime, Unslaked.......................  .........          PDM    ......................                   1    ......................          155, 230
Linted Cotton Seed containing not      .........          PDM    ......................              11, 12    ......................               155
 more than 9% moisture and not more
 than 20.5% oil.
Magnesia, Unslaked...................  .........          PDM    ......................                   1  Lightburned magnesia,             155, 280
                                                                                                              calcined magnesite.
Magnesium Nitrate....................     UN1474          5.1    ......................                   4    ......................               140
Metal Sulfide Concentrates...........  .........          PDM    ......................   8, 11, 12, 22, 24  Solid, finely divided        155, 285, 450
                                                                                                              sulfide concentrates of
                                                                                                              copper, iron, lead,
                                                                                                              nickel, zinc, or other
                                                                                                              metalliferous ores.
Peat Moss with moisture content of     .........          PDM    ......................   8, 12, 13, 14, 24  Fine to coarse fibrous       155, 290, 450
 more than 65% by weight.                                                                                     structure.
Pencil Pitch.........................  .........  ...........  See Pitch Prill.........  ..................    ......................

[[Page 70]]

 
Petroleum Coke calcined or uncalcined  .........          PDM    ......................                  11    ......................          155, 295
 at >55 C (131 F).
Pitch Prill..........................  .........          PDM    ......................              14, 16    ......................               155
Potassium Nitrate....................     UN1486          5.1    ......................                   4    ......................               140
Prilled Coal Tar.....................  .........  ...........  See Pitch Prill.........  ..................    ......................
Pyrites, Calcined....................  .........          PDM    ......................            8, 9, 24  Fly ash.................     155, 225, 450
Pyritic ash..........................  .........  ...........  See Pyrites, Calcined...  ..................    ......................
Quicklime............................  .........  ...........  See Lime, Unslaked......  ..................    ......................
Radioactive Material.................     UN2912            7    ......................                  17  Low specific activity...          145, 300
Radioactive Material.................     UN2913            7    ......................                  17  Surface contaminated              145, 300
                                                                                                              objects.
Rough Ammonia Tankage................  .........  ...........  See Tankage.............  ..................    ......................
Saltpeter............................  .........  ...........  See Potassium Nitrate...  ..................    ......................
Sawdust..............................  .........          PDM    ......................              12, 18    ......................  155, 405(a), 407
Seed Cake............................     UN1386          4.2    ......................              12, 19  Mechanically expelled or          130, 310
                                                                                                              solvent extractions.
Seed Cake............................     UN2217          4.2    ......................              12, 19  Solvent extractions.....          130, 310
Silicomanganese with silicon content   .........          PDM    ......................            2, 3, 12  With known hazard         155, 405(b), 407,
 of 25% or more.                                                                                              profile or known to         415(a) & (d),
                                                                                                              evolve gases.                 420(b), 445
Sodium Nitrate.......................     UN1498          5.1    ......................                   4    ......................               140
Sodium Nitrate and Potassium Nitrate      UN1499          5.1    ......................                   4  Mixtures prepared as                   140
 Mixture.                                                                                                     fertilizer.
Steel Swarf..........................  .........  ...........  See Ferrous Metal         ..................    ......................
                                                                Borings, Shavings,
                                                                Turnings, or Cuttings.
Sulfur...............................     UN1350          4.1    ......................              14, 20  Lumps or coarse-grained   125, 315, 405(a),
                                                                                                              powder.                          407, 435
Sulfur...............................     NA1350            9    ......................              14, 20  Not subject to the        125, 315, 405(a),
                                                                                                              requirements of this             407, 435
                                                                                                              subchapter when formed
                                                                                                              into specific shapes
                                                                                                              (i.e., prills,
                                                                                                              granules, pellets,
                                                                                                              pastiles, or flakes).
Tankage..............................  .........          PDM    ......................                  11    ......................          155, 320
Tankage Fertilizer...................  .........  ...........  See Tankage.............  ..................    ......................
Vanadium Ore.........................  .........          PDM    ......................                  21    ......................               155
Wood chips, Wood Pellets, Wood Pulp    .........          PDM    ......................                  12    ......................          155, 325
 Pellets.
Zinc Ashes...........................     UN1435          4.3    ......................            2, 3, 23  Includes zinc dross,      135, 330, 405(b),
                                                                                                              residues, and skimmings. 407, 420(b), 435,
                                                                                                                                                    445
--------------------------------------------------------------------------------------------------------------------------------------------------------


[[Page 71]]



Sec. 148.11  Hazardous or potentially dangerous characteristics.

    (a) General. When Column 5 refers to a code for a hazardous material 
or PDM, the meaning of that code is set forth in this section.
    (b) Table of Hazardous or Potentially Dangerous Characteristics.

----------------------------------------------------------------------------------------------------------------
                  Code                              Hazardous or potentially dangerous characteristic
----------------------------------------------------------------------------------------------------------------
1......................................  Contact with water may cause heating.
2......................................  Contact with water may cause evolution of flammable gases, which may
                                          form explosive mixtures with air.
3......................................  Contact with water may cause evolution of toxic gases.
4......................................  If involved in a fire, will greatly intensify the burning of
                                          combustible materials.
5......................................  A major fire aboard a vessel carrying this material may involve a risk
                                          of explosion in the event of contamination (e.g., by a fuel oil) or
                                          strong confinement. If heated strongly will decompose, giving off
                                          toxic gases that support combustion.
6......................................  These mixtures may be subject to self-sustaining decomposition if
                                          heated. Decomposition, once initiated, may spread throughout the
                                          remainder, producing gases that are toxic.
7......................................  Toxic if swallowed and by dust inhalation.
8......................................  Harmful and irritating by dust inhalation.
9......................................  Highly corrosive to steel.
10.....................................  Powerful allergen. Toxic by ingestion. Skin contact or inhalation of
                                          dust may cause severe irritation of skin, eyes, and mucous membranes
                                          in some people.
11.....................................  May be susceptible to spontaneous heating and ignition.
12.....................................  Liable to cause oxygen depletion in the cargo space.
13.....................................  Liable to emit methane gas which can form explosive mixtures with air.
14.....................................  Dust forms explosive mixtures with air.
15.....................................  May present substantial danger to the public health or welfare or the
                                          environment when released into the environment. Skin contact and dust
                                          inhalation should be avoided.
16.....................................  Combustible. Burns with dense black smoke. Dust may cause skin and eye
                                          irritation.
17.....................................  Radiation hazard from dust inhalation and contact with mucous
                                          membranes.
18.....................................  Susceptible to fire from sparks and open flames.
19.....................................  May self-heat slowly and, if wet or containing an excessive proportion
                                          of unoxidized oil, ignite spontaneously.
20.....................................  Fire may produce irritating or poisonous gases.
21.....................................  Dust may contain toxic constituents.
22.....................................  Lead nitrate and lead sulfide are hazardous substances; see code 15 of
                                          this table and Sec.  148.270.
23.....................................  Hazardous substance when consisting of pieces having a diameter less
                                          than 100 micrometers (0.004 in.); see code 15 of this table and Sec.
                                          148.270.
24.....................................  Cargo subject to liquefaction.
25.....................................  Subject to liquefaction if average particle size of cargo is less than
                                          10 mm (.394 in.).
26.....................................  This entry is considered a Marine Pollutant in accordance with 49 CFR
                                          172.101 Appendix B.
27.....................................  This entry is considered a certain dangerous cargo in accordance with
                                          33 CFR 160.202.
----------------------------------------------------------------------------------------------------------------


[75 FR 64591, Oct. 19, 2010, as amended by USCG-2005-21869, 80 FR 5336, 
Jan. 30, 2015]



Sec. 148.12  Assignment and certification.

    (a) The National Cargo Bureau is authorized to assist the Coast 
Guard in administering the provisions of this part by--
    (1) Inspecting vessels for suitability for loading solid materials 
in bulk;
    (2) Examining stowage of solid materials loaded in bulk on board 
vessels;
    (3) Making recommendations on stowage requirements applicable to the 
transportation of solid materials in bulk; and
    (4) Issuing certificates of loading that verify stowage of the solid 
material in bulk meets requirements of this part.
    (b) Certificates of loading from the National Cargo Bureau are 
accepted as evidence of compliance with bulk solid transport 
regulations.



                        Subpart B_Special Permits



Sec. 148.15  Petition for a special permit.

    (a) Each shipper who wishes to ship a bulk solid material not listed 
in Table 148.10 of this part must determine whether the material meets 
the definition of any hazard class, or the definition of a PDM, as those 
terms are defined in Sec. 148.3 of this part.
    (b) If the material meets any of the definitions described in 
paragraph (a) of this section, the shipper then must submit a petition 
in writing to the Commandant (CG-ENG-5) for authorization to ship any 
hazardous material or PDM not listed in Table 148.10 of this part.
    (c) If the Commandant (CG-ENG-5) approves a petition for 
authorization, the Commandant (CG-ENG-5) issues the petitioner a Coast 
Guard special permit. The permit allows the material

[[Page 72]]

to be transported in bulk by vessel and outlines requirements for this 
transport.
    (d) A tripartite agreement developed in conjunction with the United 
States and in accordance with the IMSBC Code (incorporated by reference, 
see Sec. 148.8) may be used in lieu of a special permit.



Sec. 148.20  Deadlines for submission of petition and related requests.

    (a) A petition for a special permit must be submitted at least 45 
days before the requested effective date. Requests for extension or 
renewal of an existing special permit must be submitted 20 days before 
the date of expiration.
    (b) Requests for extension or renewal must include the information 
required under Sec. 148.21(a), (f), and (g) of this part.



Sec. 148.21  Necessary information.

    Each petition for a special permit must contain at least the 
following:
    (a) A description of the material, including, if a hazardous 
material--
    (1) The proper shipping name from the table in 49 CFR 172.101;
    (2) The hazard class and division of the material; and
    (3) The identification number of the material.
    (b) A material safety data sheet (MSDS) for the material or--
    (1) The chemical name and any trade names or common names of the 
material;
    (2) The composition of the material, including the weight percent of 
each constituent;
    (3) Physical data, including color, odor, appearance, melting point, 
and solubility;
    (4) Fire and explosion data, including auto-ignition temperature, 
any unusual fire or explosion hazards, and any special fire fighting 
procedures;
    (5) Health hazards, including any dust inhalation hazards and any 
chronic health effects;
    (6) The threshold limit value (TLV) of the material or its major 
constituents, if available, and any relevant toxicity data;
    (7) Reactivity data, including any hazardous decomposition products 
and any incompatible materials; and
    (8) Special protection information, including ventilation 
requirements and personal protection equipment required.
    (c) Other potentially dangerous characteristics of the material not 
covered by paragraph (b) of this section, including--
    (1) Self-heating;
    (2) Depletion of oxygen in the cargo space;
    (3) Dust explosion; and
    (4) Liquefaction.
    (d) A detailed description of the proposed transportation operation, 
including--
    (1) The type of vessel proposed for water movements;
    (2) The expected loading and discharge ports, if known;
    (3) Procedures to be used for loading and unloading the material;
    (4) Precautions to be taken when handling the material; and
    (5) The expected temperature of the material at the time it will be 
loaded on the vessel.
    (e) Test results (if required under Subpart E of this part).
    (f) Previous approvals or permits.
    (g) Any relevant shipping or accident experience (or any other 
relevant transportation history by any mode of transport).



Sec. 148.25  Activities covered by a special permit.

    (a) Each special permit covers any shipment of the permitted 
material by the shipper and also covers for each shipment--
    (1) Each transfer operation;
    (2) Each vessel involved in the shipment; and
    (3) Each individual involved in any cargo handling operation.
    (b) Each special permit is valid for a period determined by the 
Commandant (CG-ENG-5) and specified in the special permit. The period 
will not exceed 4 years and is subject to suspension or revocation 
before its expiration date.



Sec. 148.26  Standard conditions for special permits.

    (a) Each special permit holder must comply with all the requirements 
of this part unless specifically exempted by the terms of the special 
permit.

[[Page 73]]

    (b) Each special permit holder must provide a copy of the special 
permit and the information required in Sec. 148.60 of this part to the 
master or person in charge of each vessel carrying the material.
    (c) The master of a vessel transporting a special permit material 
must ensure that a copy of the special permit is on board the vessel. 
The special permit must be kept with the dangerous cargo manifest if 
such a manifest is required by Sec. 148.70 of this part.
    (d) The person in charge of a barge transporting any special permit 
material must ensure that a copy of the special permit is on board the 
tug or towing vessel. When the barge is moored, the special permit must 
be kept on the barge with the shipping papers as prescribed in 
Sec. 148.62 of this part.



Sec. 148.30  Records of special permits issued.

    A list of all special permits issued, and copies of each, are 
available from the Commandant (CG-ENG-5).



              Subpart C_Minimum Transportation Requirements



Sec. 148.50  Cargoes subject to this subpart.

    The regulations in this subpart apply to each bulk shipment of--
    (a) A material listed in Table 148.10 of this part; and
    (b) Any solid material shipped under the terms of a Coast Guard 
special permit.



Sec. 148.51  Temperature readings.

    When Subpart D of this part sets a temperature limit for loading or 
transporting a material, apply the following rules:
    (a) The temperature of the material must be measured 20 to 36 
centimeters (8 to 14 inches) below the surface at 3 meter (10 foot) 
intervals over the length and width of the stockpile or cargo hold.
    (b) The temperature must be measured at every spot in the stockpile 
or cargo hold that shows evidence of heating.
    (c) Before loading or transporting the material, all temperatures 
measured must be below the temperature limit set in Subpart D of this 
part.



Sec. 148.55  International shipments.

    (a) Importer's responsibility. Each person importing any bulk solid 
material requiring special handling into the United States must provide 
the shipper and the forwarding agent at the place of entry into the 
United States with timely and complete information as to the 
requirements of this part that will apply to the shipment of the 
material within the United States.
    (b) IMSBC Code. Notwithstanding the provisions of this part, a bulk 
solid material that is classed, described, stowed, and segregated in 
accordance with the IMSBC Code (incorporated by reference, see 
Sec. 148.8), and otherwise conforms to the requirements of this section, 
may be offered and accepted for transportation and transported within 
the United States. The following conditions and limitations apply:
    (1) A bulk solid material that is listed in Table 148.10 of this 
part, but is not subject to the requirements of the IMSBC Code, may not 
be transported under the provisions of this section and is subject to 
the requirements of this part. Examples of such materials include 
environmentally hazardous substances, solid, n.o.s.
    (2) Zinc Ashes must conform to the requirements found in 
Sec. 148.330 of this part.
    (3) Exemptions granted by other competent authorities in accordance 
with the IMSBC Code must be approved by the Commandant (CG-ENG-5) in 
accordance with Sec. 148.5 of this part.
    (4) Tripartite agreements granted by other competent authorities in 
accordance with the IMSBC Code must be authorized for use in the United 
States by the Commandant (CG-ENG-5).



Sec. 148.60  Shipping papers.

    The shipper of a material listed in Table 148.10 of this part must 
provide the master or his representative with appropriate information on 
the cargo in the form of a shipping paper, in English, prior to loading. 
Information on the shipping paper must include the following:

[[Page 74]]

    (a) The appropriate BCSN. Secondary names may be used in addition to 
the BCSN;
    (b) The identification number, if applicable;
    (c) The hazard class of the material as listed in Table 148.10 of 
this part or on the Special Permit for the material;
    (d) The total quantity of the material to be transported;
    (e) The stowage factor;
    (f) The need for trimming and the trimming procedures, as necessary;
    (g) The likelihood of shifting, including angle of repose, if 
applicable;
    (h) A certificate on the moisture content of the cargo and its 
transportable moisture limit for cargoes that are subject to 
liquefaction;
    (i) Likelihood of formation of a wet base;
    (j) Toxic or flammable gases that may be generated by the cargo, if 
applicable;
    (k) Flammability, toxicity, corrosiveness, and propensity to oxygen 
depletion of the cargo, if applicable;
    (l) Self-heating properties of the cargo, if applicable;
    (m) Properties on emission of flammable gases in contact with water, 
if applicable;
    (n) Radioactive properties, if applicable;
    (o) The name and address of the U.S. shipper (consignor) or, if the 
shipment originates in a foreign country, the U.S. consignee.
    (p) A certification, signed by the shipper, that bears the following 
statement: ``This is to certify that the above named material is 
properly named, prepared, and otherwise in proper condition for bulk 
shipment by vessel in accordance with the applicable regulations of the 
U.S. Coast Guard.''



Sec. 148.61  Emergency response information.

    The shipper of a material listed in Table 148.10 of this part must 
provide the master or his representative with appropriate emergency 
response information. This information may be included on the shipping 
papers or in a separate document such as a material safety data sheet 
(MSDS). The information must include preliminary first aid measures and 
emergency procedures to be carried out in the event of an incident or 
fire involving the cargo.



Sec. 148.62  Location of shipping papers and emergency response information.

    (a) The shipping paper and emergency response information required 
by Secs. 148.60 and 148.61 of this part must be kept on board the vessel 
along with the dangerous cargo manifest required by Sec. 148.70 of this 
part. When the shipment is by unmanned barge the shipping papers and 
emergency response information must be kept on the tug or towing vessel. 
When an unmanned barge is moored, the shipping paper and emergency 
response information must be on board the barge in a readily retrievable 
location.
    (b) Any written certification or statement from the shipper to the 
master of a vessel or to the person in charge of a barge must be on, or 
attached to, the shipping paper. See Subparts E and F of this part for 
required certifications.



Sec. 148.70  Dangerous cargo manifest; general.

    (a) Except as provided in paragraph (b) of this section and in 
Sec. 148.72 of this part, each vessel transporting materials listed in 
Table 148.10 of this part must have a dangerous cargo manifest on board.
    (b) This document must be kept in a designated holder on or near the 
vessel's bridge. When required for an unmanned barge, the document must 
be on board the tug or towing vessel.



Sec. 148.71  Information included in the dangerous cargo manifest.

    The dangerous cargo manifest must include the following:
    (a) The name and official number of the vessel. If the vessel has no 
official number, the international radio call sign must be substituted;
    (b) The nationality of the vessel;
    (c) The name of the material as listed in Table 148.10 of this part;
    (d) The hold or cargo compartment in which the material is being 
transported;

[[Page 75]]

    (e) The quantity of material loaded in each hold or cargo 
compartment; and
    (f) The signature of the master acknowledging that the manifest is 
correct, and the date of the signature.



Sec. 148.72  Dangerous cargo manifest; exceptions.

    (a) No dangerous cargo manifest is required for--
    (1) Shipments by unmanned barge, except on an international voyage; 
and
    (2) Shipments of materials designated as potentially dangerous 
materials in Table 148.10 of this part.
    (b) When a dangerous cargo manifest is required for an unmanned 
barge on an international voyage, Sec. 148.71(d) of this part does not 
apply, unless the barge has more than one cargo compartment.



Sec. 148.80  Supervision of cargo transfer.

    The master must ensure that cargo transfer operations are supervised 
by a responsible person as defined in Sec. 148.3 of this part.



Sec. 148.85  Required equipment for confined spaces.

    When transporting a material that is listed in Table 148.10 of this 
part, each vessel, other than an unmanned barge, must have on board the 
following:
    (a) Equipment capable of measuring atmospheric oxygen. At least two 
members of the crew must be knowledgeable in the use of the equipment, 
which must be maintained in a condition ready for use and calibrated 
according to the manufacturer's instructions.
    (b) At least two self-contained, pressure-demand-type, air breathing 
apparatus approved by the Mine Safety and Health Administration (MSHA) 
or the National Institute for Occupational Safety and Health (NIOSH), 
each having at least a 30-minute air supply. Each foreign flag vessel 
must have on board at least two such apparatus that are approved by the 
flag state administration. The master must ensure that the breathing 
apparatus is used only by persons trained in its use.



Sec. 148.86  Confined space entry.

    (a) Except in an emergency, no person may enter a confined space 
unless that space has been tested to ensure there is sufficient oxygen 
to support life. If the oxygen content is below 19.5 percent, the space 
must be ventilated and retested before entry.
    (b) In an emergency, a confined space may be entered by a trained 
person wearing self-contained breathing apparatus, suitable protective 
clothing as necessary, and a wire rope safety line tended by a trained 
person outside the hold or in an adjacent space. Emergency entry into a 
confined space must be supervised by a responsible person as defined in 
Sec. 148.3 of this part.



Sec. 148.90  Preparations before loading.

    Before loading any material listed in Table 148.10 of this part, in 
bulk on board a vessel, the following conditions must be met:
    (a) If a hold previously has contained any material required under 
Subpart D of this part to be segregated from the material to be loaded, 
the hold must be thoroughly cleaned of all residue of the previous 
cargoes.
    (b) If the material to be loaded is Class 4.1, 4.2, or 5.1, then all 
combustible materials must be removed from the hold. Examples of some 
combustible materials are residue of previous cargoes, loose debris, and 
dunnage. Permanent wooden battens or sheathing may remain in the hold 
unless forbidden by Subpart E of this part.
    (c) If the material to be loaded is classified as Class 4.3, or is 
subject to liquefaction, the hold and associated bilge must be as dry as 
practicable.



Sec. 148.100  Log book entries.

    During the transport in bulk of a material listed in Table 148.10 of 
this part, the master must keep a record of each temperature measurement 
and each test for toxic or flammable gases required by this part. The 
date and time of each measurement and test must be recorded in the 
vessel's log.



Sec. 148.110  Procedures followed after unloading.

    (a) After a material covered by this part has been unloaded from a 
vessel, each hold or cargo compartment must

[[Page 76]]

be thoroughly cleaned of all residue of such material unless the hold is 
to be reloaded with that same cargo.
    (b) When on U.S. territorial seas or inland waters, cargo associated 
wastes, cargo residue, and deck sweepings must be retained on the vessel 
and disposed of in accordance with 33 CFR parts 151.51 through 151.77.



Sec. 148.115  Report of incidents.

    (a) When a fire or other hazardous condition occurs on a vessel 
transporting a material covered by this part, the master must notify the 
nearest Captain of the Port as soon as possible and comply with any 
instructions given.
    (b) Any incident or casualty occurring while transporting a material 
covered by this part must also be reported as required under 49 CFR 
171.15, if applicable. A copy of the written report required under 49 
CFR 171.16 must also be sent to the Commandant (CG-ENG-5), Attn: 
Hazardous Materials Division, U.S. Coast Guard Stop 7509, 2703 Martin 
Luther King Jr. Avenue SE., Washington, DC 20593-7509, at the earliest 
practicable moment.
    (c) Any release to the environment of a hazardous substance in a 
quantity equal to or in excess of its reportable quantity (RQ) must be 
reported immediately to the National Response Center at 800-424-8802 
(toll free) or 202-267-2675; or online at www.nrc.uscg.mil..

[75 FR 64591, Oct. 19, 2010, as amended by USCG-2013-0671, 78 FR 60154, 
Sept. 30, 2013]



                    Subpart D_Stowage and Segregation



Sec. 148.120  Stowage and segregation requirements.

    (a) Each material listed in Table 148.10 of this part must be 
segregated from incompatible materials in accordance with--
    (1) The requirements of Tables 148.120A and 148.120B of this section 
that pertain to the primary or subsidiary hazard class to which the 
materials belong. Whenever a subsidiary hazard may exist, the most 
stringent segregation requirement applies; and
    (2) Any specific requirements in Subpart D of this part.
    (b) Materials that are required to be separated during stowage must 
not be handled at the same time. Any residue from a material must be 
removed before a material required to be separated from it is loaded.
    (c) Definitions and application of segregation terms:
    (1) ``Separated from'' means located in different cargo compartments 
or holds when stowed under deck. If the intervening deck is resistant to 
fire and liquid, a vertical separation, i.e., in different cargo 
compartments, is acceptable as equivalent to this segregation.
    (2) ``Separated by a complete cargo compartment or hold from'' means 
either a vertical or horizontal separation, for example, by a complete 
cargo compartment or hold. If the intervening decks are not resistant to 
fire and liquid, only horizontal separation is acceptable.
    (3) ``Separated longitudinally by an intervening complete cargo 
compartment or hold from'' means that vertical separation alone does not 
meet this requirement.

                                           Table 148.120A--Segregation Between Incompatible Bulk Solid Cargoes
--------------------------------------------------------------------------------------------------------------------------------------------------------
                     Bulk solid materials                         Class      4.1       4.2       4.3       5.1       6.1        7         8       9/PDM
--------------------------------------------------------------------------------------------------------------------------------------------------------
Flammable solid...............................................      4.1         X   ........  ........  ........  ........  ........  ........
Spontaneously combustible material............................      4.2         2         X   ........  ........  ........  ........  ........
Dangerous when wet material...................................      4.3         3         3         X   ........  ........  ........  ........
Oxidizer......................................................      5.1         3         3         3         X   ........  ........  ........
Poisonous material............................................      6.1         X         X         X         2         X   ........  ........
Radioactive material..........................................        7         2         2         2         2         2         X   ........
Corrosive material............................................        8         2         2         2         2         X         X         X
Miscellaneous hazardous material and potential dangerous          9/PDM         X         X         X         X         X         2         X         X
 material.....................................................
--------------------------------------------------------------------------------------------------------------------------------------------------------
Numbers and symbols indicate the following terms as defined in Sec.  148.3 of this part:
2--``Separated from''.

[[Page 77]]

 
3--``Separated by a complete hold or compartment from''.
X--No segregation required, except as specified in an applicable section of this subpart or Subpart E of this part.


                                Table 148.120B--Segregation Between Bulk Solid Cargoes and Incompatible Packaged Cargoes
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                                   Bulk solid material
                  Packaged hazardous material                  -----------------------------------------------------------------------------------------
                                                                  Class      4.1       4.2       4.3       5.1       6.1        7         8       9/PDM
--------------------------------------------------------------------------------------------------------------------------------------------------------
Explosives....................................................      1.1         4         4         4         4         2         2         4         X
                                                                    1.2
                                                                    1.5
Explosives....................................................      1.3         3         3         4         4         2         2         2         X
                                                                    1.6
Explosives....................................................      1.4         2         2         2         2         X         2         2         X
Flammable gas.................................................      2.1         2         2         1         2         X         2         2         X
Non-flammable compressed gas..................................      2.2         2         2         X         X         X         2         1         X
Poisonous gas.................................................      2.3         2         2         X         X         X         2         1         X
Flammable liquid..............................................        3         2         2         2         2         X         2         1         X
Flammable solid...............................................      4.1         X         1         X         1         X         2         1         X
Spontaneously combustible material............................      4.2         1         X         1         2         1         2         1         X
Dangerous when wet material...................................      4.3         X         1         X         2         X         2         1         X
Oxidizer......................................................      5.1         1         2         2         X         1         1         2         X
Organic peroxide..............................................      5.2         2         2         2         2         1         2         2         X
Poisonous material............................................      6.1         X         1         X         1         X         X         X         X
Infectious substance..........................................      6.2         3         3         2         3         1         3         3         X
Radioactive material..........................................        7         2         2         2         1         X         X         2         X
Corrosive material............................................        8         1         1         1         2         X         2         X         X
Miscellaneous hazardous material..............................        9         X         X         X         X         X         X         X         X
--------------------------------------------------------------------------------------------------------------------------------------------------------
Numbers and symbols indicate the following terms as defined in Sec.  148.3 of this part:
1--``Away from''.
2--``Separated from''.
3--``Separated by a complete hold or compartment from''.
4--``Separated longitudinally by an intervening complete compartment or hold from''.
X--No segregation required, except as specified in an applicable section of this subpart or Subpart E of this part.



Sec. 148.125  Stowage and segregation for materials of Class 4.1.

    (a) Class 4.1 materials listed in Table 148.10 of this part must--
    (1) Be kept as cool and dry as practical before loading;
    (2) Not be loaded or transferred between vessels during periods of 
rain or snow;
    (3) Be stowed separated from foodstuffs; and
    (4) Be stowed clear of sources of heat and ignition and protected 
from sparks and open flame.
    (b) Bulkheads between a hold containing a Class 4.1 material and 
incompatible materials must have cable and conduit penetrations sealed 
against the passage of gas and vapor.



Sec. 148.130  Stowage and segregation for materials of Class 4.2.

    (a) Class 4.2 materials listed in Table 148.10 of this part must--
    (1) Be kept as cool and dry as practical before loading;
    (2) Not be loaded or transferred between vessels during periods of 
rain or snow;
    (3) Be stowed clear of sources of heat and ignition and protected 
from sparks and open flame; and
    (4) Except for copra and seed cake, be stowed separate from 
foodstuffs.
    (b) The bulkhead between a hold containing a Class 4.2 material and 
a hold containing a material not permitted to mix with Class 4.2 
materials must have cable and conduit penetrations sealed against the 
passage of gas and vapor.



Sec. 148.135  Stowage and segregation for materials of Class 4.3.

    (a) Class 4.3 materials listed in Table 148.10 of this part which, 
in contact with water, emit flammable gases, must--
    (1) Be kept as cool and dry as practical before loading;
    (2) Not be loaded or transferred between vessels during periods of 
rain or snow;
    (3) Be stowed separate from foodstuffs and all Class 8 liquids; and
    (4) Be stowed in a mechanically ventilated hold. Exhaust gases must 
not penetrate into accommodation, work or control spaces. Unmanned 
barges

[[Page 78]]

that have adequate natural ventilation need not have mechanical 
ventilation.
    (b) The bulkhead between a hold containing a Class 4.3 material and 
incompatible materials must have cable and conduit penetrations sealed 
against the passage of gas and vapor.



Sec. 148.140  Stowage and segregation for materials of Class 5.1.

    (a) Class 5.1 materials listed in Table 148.10 of this part must--
    (1) Be kept as cool and dry as practical before loading;
    (2) Be stowed away from all sources of heat or ignition; and
    (3) Be stowed separate from foodstuffs and all readily combustible 
materials.
    (b) Special care must be taken to ensure that holds containing Class 
5.1 materials are clean and, whenever practical, only noncombustible 
securing and protecting materials are used.
    (c) Class 5.1 materials must be prevented from entering bilges or 
other cargo holds.



Sec. 148.145  Stowage and segregation for materials of Class 7.

    (a) Class 7 material listed in Table 148.10 of this part must be 
stowed--
    (1) Separate from foodstuffs; and
    (2) In a hold or barge closed or covered to prevent dispersal of the 
material during transportation.
    (b) [Reserved]



Sec. 148.150  Stowage and segregation for materials of Class 9.

    (a) A bulk solid cargo of Class 9 material (miscellaneous hazardous 
material) listed in Table 148.10 of this part must be stowed and 
segregated as required by this section.
    (b) Ammonium nitrate fertilizer of Class 9 must be segregated as 
required for Class 5.1 materials in Secs. 148.120 and 148.140 of this 
part and must be stowed--
    (1) Separated by a complete hold or compartment from readily 
combustible materials, chlorates, hypochlorites, nitrites, 
permanganates, and fibrous materials (e.g., cotton, jute, sisal, etc.);
    (2) Clear of all sources of heat, including insulated piping; and
    (3) Out of direct contact with metal engine-room boundaries.
    (c) Castor beans must be stowed separate from foodstuffs and Class 
5.1 materials.
    (d) Fish meal must be stowed and segregated as required for Class 
4.2 materials in Secs. 148.120 and 148.130 of this part. In addition, 
its temperature at loading must not exceed 35  deg.C (95  deg.F), or 5 
deg.C (9  deg.F) above ambient temperature, whichever is higher.
    (e) Sulfur must be stowed and segregated as required under 
Secs. 148.120 and 148.125 of this part for a material of Class 4.1.



Sec. 148.155  Stowage and segregation for potentially dangerous materials.

    (a) A PDM must be stowed and segregated according to the 
requirements of this section and Table 148.155 of this section.
    (b) When transporting coal--
    (1) Coal must be stowed separate from materials of Class/division 
1.4 and Classes 2, 3, 4, and 5 in packaged form; and separated from bulk 
solid materials of Classes 4 and 5.1;
    (2) No material of Class 5.1, in either packaged or bulk solid form, 
may be stowed above or below a cargo of coal; and
    (3) Coal must be separated longitudinally by an intervening complete 
cargo compartment or hold from materials of Class 1 other than Class/
division 1.4.
    (c) When transporting direct reduced iron (DRI)--
    (1) DRI lumps, pellets, or cold-molded briquettes, and DRI hot-
molded briquettes, must be separated from materials of Class/division 
1.4, Classes 2, 3, 4, 5, Class 8 acids in packaged form, and bulk solid 
materials of Classes 4 and 5.1; and
    (2) No material of Class 1, other than Class/division 1.4, may be 
transported on the same vessel with DRI.
    (d) Petroleum coke, calcined or uncalcined, must be--
    (1) Separated longitudinally by an intervening complete cargo 
compartment or hold from materials of Class/divisions 1.1 and 1.5; and
    (2) Separated by a complete cargo compartment or hold from all 
hazardous materials and other potentially dangerous materials in 
packaged and bulk solid form.

[[Page 79]]



                                 Table 148.155--Stowage and Segregation Requirements for Potentially Dangerous Material
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                   Load only
                                     Segregate as   ``Separate     under dry                  Mechanical      ``Separate from''
   Potentially dangerous material      for class      from''        weather      Keep dry     ventilation      material listed       Special provisions
                                      listed \1\    foodstuffs    conditions                   required
--------------------------------------------------------------------------------------------------------------------------------------------------------
Aluminum Smelting By-products or             4.3             X             X             X             X   Class 8 liquids
 Aluminum Re-melting Byproducts.
Brown Coal Briquettes..............  ............  ............  ............  ............  ............  See paragraph (b) of    See paragraph (b) of
                                                                                                            this section.           this section.
Charcoal...........................          4.1   ............  ............            X   ............  Oily materials
Coal...............................  ............  ............  ............  ............  ............  See paragraph (b) of    See paragraph (b) of
                                                                                                            this section.           this section.
Direct reduced iron (A)............  ............  ............  ............  ............  ............  See paragraph (c) of    See paragraph (c) of
                                                                                                            this section.           this section.
Direct reduced iron (B)............  ............  ............  ............  ............  ............  See paragraph (c) of    See paragraph (c) of
                                                                                                            this section.           this section.
Ferrophosphorus....................          4.3             X             X             X             X   Class 8 liquids
Ferrolilicon.......................          4.3             X             X             X             X   Class 8 liquids
Fluorospar.........................  ............            X   ............  ............  ............  Class 8 liquids
Lime, Unslaked.....................  ............  ............  ............            X   ............  All packaged and bulk
                                                                                                            solid hazardous
                                                                                                            materials.
Linted Cotton Seed.................  ............  ............  ............            X   ............
Magnesia, Unslaked.................  ............  ............  ............  ............  ............  All packaged and bulk
                                                                                                            solid hazardous
                                                                                                            materials.
Metal Sulfide Concentrates.........          4.2             X   ............  ............  ............  Class 8 liquids
Petroleum Coke.....................  ............            X   ............  ............  ............                          See section
                                                                                                                                    148.155(d).
Pitch Prill........................          4.1   ............  ............  ............  ............
Pyrites, Calcined..................  ............            X             X             X             X
Sawdust............................          4.1   ............  ............            X   ............  All Class 5.1 and 8
                                                                                                            liquids.
Silicomanganese....................          4.3             X             X             X             X   Class 8 liquids
Tankage............................          4.2             X             X   ............  ............
Vanadium...........................          6.1             X   ............  ............  ............
Wood chips.........................          4.1   ............  ............  ............  ............
Wood pellets.......................          4.1   ............  ............  ............  ............
Wood pulp pellets..................          4.1   ............  ............  ............  ............
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ See Tables 148.120A and B.



          Subpart E_Special Requirements for Certain Materials



Sec. 148.200  Purpose.

    This subpart prescribes special requirements for specific materials. 
These requirements are in addition to the minimum transportation 
requirements in Subpart C of this part that are applicable to all 
materials listed in Table 148.10 of this part.

[[Page 80]]



Sec. 148.205  Ammonium nitrate and ammonium nitrate fertilizers.

    (a) This section applies to the stowage and transportation in bulk 
of ammonium nitrate and the following fertilizers composed of uniform, 
non-segregating mixtures containing ammonium nitrate:
    (1) Ammonium nitrate containing added organic matter that is 
chemically inert towards the ammonium nitrate; containing at least 90 
percent ammonium nitrate and a maximum of 0.2 percent of combustible 
material (including organic material calculated as carbon); or 
containing less than 90 percent but more than 70 percent of ammonium 
nitrate and a maximum of 0.4 percent combustible material;
    (2) Ammonium nitrate with calcium carbonate and/or dolomite, 
containing more than 80 percent but less than 90 percent of ammonium 
nitrate and a maximum of 0.4 percent of total combustible material;
    (3) Ammonium nitrate with ammonium sulfate containing more than 45 
percent but a maximum of 70 percent of ammonium nitrate and containing a 
maximum of 0.4 percent of combustible material; and
    (4) Nitrogen phosphate or nitrogen/potash type fertilizers or 
complete nitrogen/phosphate/potash type fertilizers containing more than 
70 percent but less than 90 percent of ammonium nitrate and a maximum of 
0.4 percent of combustible material.
    (b) No material covered by this section may be transported in bulk 
unless it demonstrates resistance to detonation when tested by one of 
the following methods:
    (1) Appendix 2, Section 5, of the IMSBC Code (incorporated by 
reference, see Sec. 148.8);
    (2) Test series 1 and 2 of the Class 1 (explosive) in the UN Manual 
of Tests and Criteria, Part I (incorporated by reference, see 
Sec. 148.8); or
    (3) An equivalent test satisfactory to the Administration of the 
country of shipment.
    (c) Before loading a material covered by this section--
    (1) The shipper must give the master of the vessel written 
certification that the material has met the test requirements of 
paragraph (b) of this section;
    (2) The cargo hold must be inspected for cleanliness and free from 
readily combustible materials;
    (3) Each cargo hatch must be weathertight as defined in Sec. 42.13-
10 of this chapter;
    (4) The temperature of the material must be less than 55  deg.C (131 
 deg.F); and
    (5) Each fuel tank under a cargo hold where the material is stowed 
must be pressure tested before loading to ensure that there is no 
leakage of manholes or piping systems leading through the cargo hold.
    (d) Bunkering or transferring of fuel to or from the vessel may not 
be performed during cargo loading and unloading operations involving a 
material covered by this section.
    (e) When a material covered by this section is transported on a 
cargo vessel--
    (1) No other material may be stowed in the same hold with that 
material;
    (2) In addition to the segregation requirements in Sec. 148.140 of 
this part, the material must be separated by a complete cargo 
compartment or hold from readily combustible materials, chlorates, 
chlorides, chlorites, hypochlorites, nitrites, permanganates, and 
fibrous materials; and
    (3) The bulkhead between a cargo hold containing a material covered 
by this section and the engine room must be insulated to ``A-60'' class 
division or an equivalent arrangement to the satisfaction of the 
cognizant Coast Guard Captain of the Port or the Administration of the 
country of shipment.



Sec. 148.220  Ammonium nitrate-phosphate fertilizers.

    (a) This section applies to the stowage and transportation of 
uniform, nonsegregating mixtures of nitrogen/phosphate or nitrogen/
potash type fertilizers, or complete fertilizers of nitrogen/phosphate/
potash type containing a maximum of 70 percent of ammonium nitrate and 
containing a maximum of 0.4 percent total added combustible material or 
containing a maximum of 45 percent ammonium nitrate with unrestricted 
combustible material.
    (b) A fertilizer mixture described in paragraph (a) of this section 
is exempt if--

[[Page 81]]

    (1) When tested in accordance with the trough test prescribed in 
Appendix 2, Section 4, of the IMSBC Code or in the UN Manual of Tests 
and Criteria, Part III, Subsection 38.2 (incorporated by reference, see 
Sec. 148.8), it is found to be free from the risk of self-sustaining 
decomposition.
    (2) [Reserved]
    (c) No fertilizer covered by this section may be transported in bulk 
if, when tested in accordance with the trough test prescribed in 
Appendix 2, Section 4, of the IMSBC Code or in the UN Manual of Tests 
and Criteria, Part III, Subsection 38.2 (incorporated by reference, see 
Sec. 148.8), it has a self-sustaining decomposition rate that is greater 
than 0.25 meters per hour, or is liable to self-heat sufficient to 
initiate decomposition.
    (d) Fertilizers covered by this section must be stowed away from all 
sources of heat, and out of direct contact with a metal engine 
compartment boundary.
    (e) Bunkering or transferring of fuel may not be performed during 
loading and unloading of fertilizer covered by this section.
    (f) Fertilizer covered by this section must be segregated as 
prescribed in Secs. 148.140 and 148.220(d) of this part.



Sec. 148.225  Calcined pyrites (pyritic ash, fly ash).

    (a) This part does not apply to the shipment of calcined pyrites 
that are the residual ash of oil or coal fired power stations.
    (b) This section applies to the stowage and transportation of 
calcined pyrites that are the residual product of sulfuric acid 
production or elemental metal recovery operations.
    (c) Before loading calcined pyrites covered by this section--
    (1) The cargo space must be as clean and dry as practical;
    (2) The calcined pyrites must be dry; and
    (3) Precautions must be taken to prevent the penetration of calcined 
pyrites into other cargo spaces, bilges, wells, and ceiling boards.
    (d) After calcined pyrites covered by this section have been 
unloaded from a cargo space, the cargo space must be thoroughly cleaned. 
Cargo residues and sweepings must be disposed of as prescribed in 33 CFR 
parts 151.55 through 151.77.



Sec. 148.227  Calcium nitrate fertilizers.

    This part does not apply to commercial grades of calcium nitrate 
fertilizers consisting mainly of a double salt (calcium nitrate and 
ammonium nitrate) and containing a maximum of 15.5 percent nitrogen and 
at least 12 percent of water.



Sec. 148.230  Calcium oxide (lime, unslaked).

    (a) When transported by barge, unslaked lime (calcium oxide) must be 
carried in an unmanned, all steel, double-hulled barge equipped with 
weathertight hatches or covers. The barge must not carry any other cargo 
while unslaked lime is on board.
    (b) The shipping paper requirements in Sec. 148.60 of this part and 
the dangerous cargo manifest requirements in Sec. 148.70 of this part do 
not apply to the transportation of unslaked lime under paragraph (a) of 
this section.



Sec. 148.235  Castor beans.

    (a) This part applies only to the stowage and transportation of 
whole castor beans. Castor meal, castor pomace, and castor flakes may 
not be shipped in bulk.
    (b) Persons handling castor beans must wear dust masks and goggles.
    (c) Care must be taken to prevent castor bean dust from entering 
accommodation, control, or service spaces during cargo transfer 
operations.



Sec. 148.240  Coal.

    (a) The electrical equipment in cargo holds carrying coal must meet 
the requirements of Subpart 111.105 of this chapter or an equivalent 
standard approved by the administration of the vessel's flag state.
    (b) Before coal is loaded in a cargo hold, the bilges must be as 
clean and dry as practical. The hold must also be free of any readily 
combustible material, including the residue of previous cargoes if other 
than coal.
    (c) The master of each vessel carrying coal must ensure that--
    (1) All openings to the cargo hold, except for unloading gates on 
self-unloading vessels, are sealed before loading

[[Page 82]]

the coal and, unless the coal is as described in paragraph (f) of this 
section, the hatches must also be sealed after loading;
    (2) As far as practical, gases emitted by the coal do not accumulate 
in enclosed working spaces such as storerooms, shops, or passageways, 
and tunnel spaces on self-unloading vessels, and that such spaces are 
adequately ventilated;
    (3) The vessel has adequate ventilation as required by paragraph (f) 
of this section; and
    (4) If the temperature of the coal is to be monitored under 
paragraph (e)(2)(i) of this section, the vessel has instruments that are 
capable of measuring the temperature of the cargo in the range 0 deg.-
100  deg.C (32  deg.-212  deg.F) without entry into the cargo hold.
    (d) A cargo hold containing coal must not be ventilated unless the 
conditions of paragraph (f) of this section are met, or unless methane 
is detected under paragraph (h) of this section.
    (e) If coal waiting to be loaded has shown a tendency to self-heat, 
has been handled so that it may likely self-heat, or has been observed 
to be heating, the master is responsible for monitoring the temperature 
of the coal at several intervals during these times:
    (1) Before loading; and
    (2) During the voyage, by--
    (i) Measuring the temperature of the coal;
    (ii) Measuring the emission of carbon monoxide; or
    (iii) Both.
    (f) If coal waiting to be loaded has a potential to emit dangerous 
amounts of methane, for example it is freshly mined, or has a history of 
emitting dangerous amounts of methane, then:
    (1) Surface ventilation, either natural or from fixed or portable 
nonsparking fans, must be provided; and
    (2) The atmosphere above the coal must be monitored for the presence 
of methane as prescribed in paragraph (h) of this section. The results 
of this monitoring must be recorded at least twice in every 24-hour 
period, unless the conditions of paragraph (m) of this section are met.
    (g) Electrical equipment and cables in a hold containing a coal 
described in paragraph (f) of this section must be either suitable for 
use in an explosive gas atmosphere or de-energized at a point outside 
the hold. Electrical equipment and cables necessary for continuous safe 
operations, such as lighting fixtures, must be suitable for use in an 
explosive gas atmosphere. The master of the vessel must ensure that the 
affected equipment and cables remain de-energized as long as this coal 
remains in the hold.
    (h) For all coal loaded on a vessel, other than an unmanned barge, 
the atmosphere above the coal must be routinely tested for the presence 
of methane, carbon monoxide, and oxygen, following the procedures in the 
Appendices to the schedules for Coal and Brown Coal Briquettes as 
contained in the IMSBC Code (incorporated by reference, see Sec. 148.8). 
This testing must be performed in such a way that the cargo hatches are 
not opened and entry into the hold is not necessary.
    (i) When carrying a coal described in paragraph (e) of this section, 
the atmosphere above the coal must be monitored for the presence of 
carbon monoxide as prescribed in paragraph (h) of this section. The 
results of this monitoring must be recorded at least twice in every 24-
hour period, unless the conditions of paragraph (m) of this section are 
met. If the level of carbon monoxide is increasing rapidly or reaches 20 
percent of the lower flammability limit (LFL), the frequency of 
monitoring must be increased.
    (j) When a cargo of coal has a potential to self-heat or has been 
observed to be heating, the hatches should be closed and sealed and all 
surface ventilation halted except as necessary to remove any methane 
that may have accumulated.
    (k) If the level of carbon monoxide monitored under paragraph (i) of 
this section continues to increase rapidly or the temperature of coal 
carried on board a vessel exceeds 55  deg.C (131  deg.F) and is 
increasing rapidly, the master must notify the nearest Coast Guard 
Captain of the Port of--
    (1) The name, nationality, and position of the vessel;
    (2) The most recent temperature, if measured, and levels of carbon 
monoxide and methane;

[[Page 83]]

    (3) The port where the coal was loaded and the destination of the 
coal;
    (4) The last port of call of the vessel and its next port of call; 
and
    (5) What action has been taken.
    (l) If the level of methane as monitored under paragraph (h) of this 
section reaches 20 percent of the LFL or is increasing rapidly, 
ventilation of the cargo hold, under paragraph (f) of this section, must 
be initiated. If this ventilation is provided by opening the cargo 
hatches, care must be taken to avoid generating sparks.
    (m) The frequency of monitoring required by paragraph (f) of this 
section may be reduced at the discretion of the master provided that--
    (1) The level of gas measured is less than 20 percent of the LFL;
    (2) The level of gas measured has remained steady or decreased over 
three consecutive readings, or has increased by less than 5 percent over 
four consecutive readings spanning at least 48 hours; and
    (3) Monitoring continues at intervals sufficient to determine that 
the level of gas remains within the parameters of paragraphs (m)(1) and 
(m)(2) of this section.



Sec. 148.242  Copra.

    Copra must have surface ventilation. It must not be stowed against 
heated surfaces including fuel oil tanks which may require heating.



Sec. 148.245  Direct reduced iron (DRI); lumps, pellets, and cold-molded
briquettes.

    (a) Before loading DRI lumps, pellets, or cold-molded briquettes--
    (1) The master must have a written certification from a competent 
person appointed by the shipper and recognized by the Commandant (CG-
ENG-5) stating that the DRI, at the time of loading, is suitable for 
shipment;
    (2) The DRI must be aged for at least 3 days, or be treated with an 
air passivation technique or some other equivalent method that reduces 
its reactivity to at least the same level as the aged DRI; and
    (3) Each hold and bilge must be as clean and dry as practical. Other 
than double bottom tanks, adjacent ballast tanks must be kept empty when 
possible. All wooden fixtures, such as battens, must be removed from the 
hold.
    (b) Each boundary of a hold where DRI lumps, pellets, or cold-molded 
briquettes are to be carried must be resistant to fire and passage of 
water.
    (c) DRI lumps, pellets, or cold-molded briquettes that are wet, or 
that are known to have been wetted, may not be accepted for transport. 
The moisture content of the DRI must not exceed 0.3 percent prior to 
loading.
    (d) DRI lumps, pellets and cold-molded briquettes must be protected 
at all times from contact with water, and must not be loaded or 
transferred from one vessel to another during periods of rain or snow.
    (e) DRI lumps, pellets, or cold-molded briquettes may not be loaded 
if their temperature is greater than 65  deg.C (150  deg.F).
    (f) The shipper of DRI lumps, pellets, or cold-molded briquettes in 
bulk must ensure that an inert atmosphere of less than 5 percent oxygen 
and 1 percent hydrogen, by volume, is maintained throughout the voyage 
in any hold containing these materials.
    (g) When DRI lumps, pellets, or cold-molded briquettes are loaded, 
precautions must be taken to avoid the concentration of fines (pieces 
less than 6.35mm in size) in any one location in the cargo hold.
    (h) Radar and RDF scanners must be protected against the dust 
generated during cargo transfer operations of DRI lumps, pellets, or 
cold-molded briquettes.



Sec. 148.250  Direct reduced iron (DRI); hot-molded briquettes.

    (a) Before loading DRI hot-molded briquettes--
    (1) The master must have a written certification from a competent 
person appointed by the shipper and recognized by the Commandant (CG-
ENG-5) that at the time of loading the DRI hot-molded briquettes are 
suitable for shipment; and
    (2) Each hold and bilge must be as clean and dry as practical. 
Except double bottom tanks, adjacent ballast tanks must be kept empty 
where possible. All wooden fixtures, such as battens, must be removed.

[[Page 84]]

    (b) All boundaries of a hold must be resistant to fire and passage 
of water to carry DRI hot-molded briquettes.
    (c) DRI hot-molded briquettes must be protected at all times from 
contact with water. They must not be loaded or transferred from one 
vessel to another during periods of rain or snow.
    (d) DRI hot-molded briquettes may not be loaded if their temperature 
is greater than 65  deg.C (150  deg.F).
    (e) When loading DRI hot-molded briquettes, precautions must be 
taken to avoid the concentration of fines (pieces less than 6.35mm in 
size) in any one location in the cargo hold.
    (f) Adequate surface ventilation must be provided when carrying or 
loading DRI hot-molded briquettes.
    (g) When DRI hot-molded briquettes are carried by unmanned barge--
    (1) The barge must be fitted with vents adequate to provide natural 
ventilation; and
    (2) The cargo hatches must be closed at all times after loading the 
DRI hot-molded briquettes.
    (h) Radar and RDF scanners must be adequately protected against dust 
generated during cargo transfer operations of DRI hot-molded briquettes.
    (i) During final discharge only, a fine spray of water may be used 
to control dust from DRI hot-molded briquettes.



Sec. 148.255  Ferrosilicon, aluminum ferrosilicon, and aluminum silicon
containing more than 30% but less than 90% silicon.

    (a) This section applies to the stowage and transportation of 
ferrosilicon, aluminum ferrosilicon, and aluminum silicon containing 
more than 30 percent but less than 90 percent silicon.
    (b) The shipper of material described in paragraph (a) of this 
section must give the master a written certification stating that after 
manufacture the material was stored under cover, but exposed to the 
weather, in the particle size in which it is to be shipped, for at least 
three days before shipment.
    (c) Material described in paragraph (a) of this section must be 
protected at all times from contact with water, and must not be loaded 
or unloaded during periods of rain or snow.
    (d) Except as provided in paragraph (e) of this section, each hold 
containing material described in paragraph (a) of this section must be 
mechanically ventilated by at least two separate fans. The total 
ventilation must be at least five air changes per hour, based on the 
empty hold. Ventilation must not allow escaping gas to reach 
accommodation or work spaces, on or under deck.
    (e) An unmanned barge which is provided with natural ventilation 
need not comply with paragraph (d) of this section.
    (f) Each space adjacent to a hold containing material described in 
paragraph (a) of this section must be well ventilated with mechanical 
fans. No person may enter that space unless it has been tested to ensure 
that it is free from phosphine and arsine gases.
    (g) Scuttles and windows in accommodation and work spaces adjacent 
to holds containing material described in paragraph (a) of this section 
must be kept closed while this material is being loaded and unloaded.
    (h) Any bulkhead between a hold containing material described in 
paragraph (a) of this section and an accommodation or work space must be 
gas tight and adequately protected against damage from any unloading 
equipment.
    (i) When a hold containing material described in paragraph (a) of 
this section is equipped with atmosphere sampling type smoke detectors 
with lines that terminate in accommodation or work spaces, those lines 
must be blanked off gas-tight.
    (j) If a hold containing material described in paragraph (a) of this 
section must be entered at any time, the hatches must be open for two 
hours before entry to dissipate any accumulated gases. The atmosphere in 
the hold must be tested to ensure that there is no phosphine or arsine 
gas present.
    (k) After unloading material described in paragraph (a) of this 
section, each cargo hold must be thoroughly cleaned and tested to ensure 
that no phosphine or arsine gas remains.



Sec. 148.260  Ferrous metal.

    (a) This part does not apply to the stowage and transportation in 
bulk of stainless steel borings, shavings, turnings, or cuttings; nor 
does this part apply to an unmanned barge on a

[[Page 85]]

voyage entirely on the navigable waters of United States.
    (b) Ferrous metal may not be stowed or transported in bulk unless 
the following conditions are met:
    (1) All wooden sweat battens, dunnage, and debris must be removed 
from the hold before the ferrous metal is loaded;
    (2) If weather is inclement during loading, hatches must be covered 
or otherwise protected to keep the material dry;
    (3) During loading and transporting, the bilge of each hold in which 
ferrous metal is stowed or will be stowed must be kept as dry as 
practical;
    (4) During loading, the ferrous metal must be compacted in the hold 
as frequently as practicable with a bulldozer or other means that 
provides equivalent surface compaction;
    (5) No other material may be loaded in a hold containing ferrous 
metal unless--
    (i) The material to be loaded in the same hold with the ferrous 
metal is not a material listed in Table 148.10 of this part or a readily 
combustible material;
    (ii) The loading of the ferrous metal is completed first; and
    (iii) The temperature of the ferrous metal in the hold is below 55 
deg.C (131  deg.F) or has not increased in eight hours before the 
loading of the other material; and
    (6) During loading, the temperature of the ferrous metal in the pile 
being loaded must be below 55  deg.C (131  deg.F).
    (c) The master of a vessel that is loading or transporting a ferrous 
metal must ensure that the temperature of the ferrous metal is taken--
    (1) Before loading;
    (2) During loading, in each hold and pile being loaded, at least 
once every twenty-four hours and, if the temperature is rising, as often 
as is necessary to ensure that the requirements of this section are met; 
and
    (3) After loading, in each hold, at least once every 24 hours.
    (d) During loading, if the temperature of the ferrous metal in a 
hold is 93  deg.C (200  deg.F) or higher, the master must notify the 
Coast Guard Captain of the Port and suspend loading until the Captain of 
the Port is satisfied that the temperature of the ferrous metal is 88 
deg.C (190  deg.F) or less.
    (e) After loading ferrous metal--
    (1) If the temperature of the ferrous metal in each hold is 65 
deg.C (150  deg.F) or above, the master must notify the Coast Guard 
Captain of the Port, and the vessel must remain in the port area until 
the Captain of the Port is satisfied that the temperature of ferrous 
metal has shown a downward trend below 65  deg.C (150  deg.F) for at 
least eight hours after completion of loading of the hold; or
    (2) If the temperature of the ferrous metal in each hold is less 
than 88  deg.C (190  deg.F) and has shown a downward trend for at least 
eight hours after the completion of loading, the master must notify the 
Coast Guard Captain of the Port, and the vessel must remain in the port 
area until the Captain of the Port confirms that the vessel is sailing 
directly to another port, no further than 12 hours sailing time, for the 
purpose of loading more ferrous metal in bulk or to completely off-load 
the ferrous metal.
    (f) Except for shipments of ferrous metal in bulk which leave the 
port of loading under the conditions specified in paragraph (e)(2) of 
this section, if after the vessel leaves the port, the temperature of 
the ferrous metal in the hold rises above 65  deg.C (150  deg.F), the 
master must notify the nearest Coast Guard Captain of the Port as soon 
as possible of--
    (1) The name, nationality, and position of the vessel;
    (2) The most recent temperature taken;
    (3) The length of time that the temperature has been above 65  deg.C 
(150  deg.F) and the rate of rise, if any;
    (4) The port where the ferrous metal was loaded and the destination 
of the ferrous metal;
    (5) The last port of call of the vessel and its next port of call;
    (6) What action has been taken; and
    (7) Whether any other cargo is endangered.



Sec. 148.265  Fish meal or fish scrap.

    (a) This part does not apply to fish meal or fish scrap that 
contains less than 5 percent moisture by weight.

[[Page 86]]

    (b) Fish meal or fish scrap may contain a maximum of 12 percent 
moisture by weight and a maximum of 15 percent fat by weight.
    (c) At the time of production, fish meal or fish scrap must be 
treated with an effective antioxidant (at least 400 mg/kg (ppm) 
ethoxyquin, at least 1000 mg/kg (ppm) butylated hydroxytoluene, or at 
least 1000 mg/kg (ppm) of tocopherol-based liquid antioxidant).
    (d) Shipment of the fish meal or fish scrap must take place a 
maximum of 12 months after the treatment prescribed in paragraph (c) of 
this section.
    (e) Fish meal or fish scrap must contain at least 100 mg/kg (ppm) of 
ethoxyquin or butylated hydroxytoluene or at least 250 mg/kg (ppm) of 
tocopherol-based antioxidant at the time of shipment.
    (f) At the time of loading, the temperature of the fish meal or fish 
scrap to be loaded may not exceed 35  deg.C (95  deg.F), or 5  deg.C (9 
deg.F) above the ambient temperature, whichever is higher.
    (g) For each shipment of fish meal or fish scrap, the shipper must 
give the master a written certification stating--
    (1) The total weight of the shipment;
    (2) The moisture content of the material;
    (3) The fat content of the material;
    (4) The type of antioxidant and its concentration in the fish meal 
or fish scrap at the time of shipment;
    (5) The date of production of the material; and
    (6) The temperature of the material at the time of shipment.
    (h) During a voyage, temperature readings must be taken of fish meal 
or fish scrap three times a day and recorded. If the temperature of the 
material exceeds 55  deg.C (131  deg.F) and continues to increase, 
ventilation to the hold must be restricted. This paragraph does not 
apply to shipments by unmanned barge.



Sec. 148.270  Hazardous substances.

    (a) Each bulk shipment of a hazardous substance must--
    (1) Be assigned a shipping name in accordance with 49 CFR 
172.203(c); and
    (2) If the hazardous substance is also listed as a hazardous solid 
waste in 40 CFR part 261, follow the applicable requirements of 40 CFR 
chapter I, subchapter I.
    (b) Each release of a quantity of a designated substance equal to or 
greater than the reportable quantity, as set out in Table 1 to Appendix 
A of 49 CFR 171.101, when discharged into or upon the navigable waters 
of the United States, adjoining shorelines, into or upon the contiguous 
zone, or beyond the contiguous zone, must be reported as required in 
subpart B of 33 CFR part 153.
    (c) A hazardous substance must be stowed in a hold or barge that is 
closed or covered and prevents dispersal of the material during 
transportation.
    (d) During cargo transfer operations, a spill or release of a 
hazardous substance must be minimized to the greatest extent possible. 
Each release must be reported as required in paragraph (b) of this 
section.
    (e) After a hazardous substance is unloaded, the hold in which it 
was carried must be cleaned thoroughly. The residue of the substance 
must be disposed of pursuant to 33 CFR 151.55 through 151.77 and the 
applicable regulations of 40 CFR subchapter I.



Sec. 148.275  Iron oxide, spent; iron sponge, spent.

    (a) Before spent iron oxide or spent iron sponge is loaded in a 
closed hold, the shipper must give the master a written certification 
that the material has been cooled and weathered for at least eight 
weeks.
    (b) Both spent iron oxide and spent iron sponge may be transported 
on open hold all-steel barges after exposure to air for a period of at 
least ten days.



Sec. 148.280  Magnesia, unslaked (lightburned magnesia, calcined 
magnesite, caustic calcined magnesite).

    (a) This part does not apply to the transport of natural magnesite, 
magnesium carbonate, or magnesia clinkers.
    (b) When transported by barge, unslaked magnesia must be carried in 
an unmanned, all-steel, double-hulled barge equipped with weathertight 
hatches or covers. The barge may not carry any other cargo while 
unslaked magnesia is on board.

[[Page 87]]

    (c) The shipping paper requirements in Sec. 148.60 of this part and 
the dangerous cargo manifest requirements in Sec. 148.70 of this part do 
not apply to unslaked magnesia transported under the requirements of 
paragraph (b) of this section.



Sec. 148.285  Metal sulfide concentrates.

    (a) When information given by the shipper under Sec. 148.60 of this 
part indicates that the metal sulfide concentrate may generate toxic or 
flammable gases, the appropriate gas detection equipment from 
Secs. 148.415 and 148.420 of this part must be on board the vessel.
    (b) No cargo hold containing a metal sulfide concentrate may be 
ventilated.
    (c) No person may enter a hold containing a metal sulfide 
concentrate unless--
    (1) The atmosphere in the cargo hold has been tested and contains 
sufficient oxygen to support life and, where the shipper indicates that 
toxic gas(es) may be generated, the atmosphere in the cargo hold has 
been tested for the toxic gas(es) and the concentration of the gas(es) 
is found to be less than the TLV; or
    (2) An emergency situation exists and the person entering the cargo 
hold is wearing the appropriate self-contained breathing apparatus.



Sec. 148.290  Peat moss.

    (a) Before shipment, peat moss must be stockpiled under cover to 
allow drainage and reduce its moisture content.
    (b) The cargo must be ventilated so that escaping gases cannot reach 
living quarters on or above deck.
    (c) Persons handling or coming into contact with peat moss must wear 
gloves, a dust mask, and goggles.



Sec. 148.295  Petroleum coke, calcined or uncalcined, at 55  deg.C 
(131  deg.F) or above.

    (a) This part does not apply to shipments of petroleum coke, 
calcined or uncalcined, on any vessel when the temperature of the 
material is less than 55  deg.C (131  deg.F).
    (b) Petroleum coke, calcined or uncalcined, or a mixture of calcined 
and uncalcined petroleum coke may not be loaded when its temperature 
exceeds 107  deg.C (225  deg.F).
    (c) No other hazardous materials may be stowed in any hold adjacent 
to a hold containing petroleum coke except as provided in paragraph (d) 
of this section.
    (d) Before petroleum coke at 55  deg.C (131  deg.F) or above may be 
loaded into a hold over a tank containing fuel or material having a 
flashpoint of less than 93  deg.C (200  deg.F), a 0.6 to 1.0 meter (2 to 
3 foot) layer of the petroleum coke at a temperature not greater than 43 
 deg.C (110  deg.F) must first be loaded.
    (e) Petroleum coke must be loaded as follows:
    (1) For a shipment in a hold over a fuel tank, the loading of a 
cooler layer of petroleum coke in the hold as required by paragraph (d) 
of this section must be completed before loading the petroleum coke at 
55  deg.C (131  deg.F) or above in any hold of the vessel;
    (2) Upon completion of the loading described in paragraph (e)(1) of 
this section, a 0.6 to 1.0 meter (2 to 3 foot) layer of the petroleum 
coke at 55  deg.C (131  deg.F) or above must first be loaded into each 
hold, including those holds already containing a cooler layer of the 
petroleum coke; and
    (3) Upon completion of the loading described in paragraph (e)(2) of 
this section, normal loading of the petroleum coke may be completed.
    (f) The master of the vessel must warn members of a crew that 
petroleum coke is hot, and that injury due to burns is possible.
    (g) During the voyage, the temperature of the petroleum coke must be 
monitored often enough to detect spontaneous heating.



Sec. 148.300  Radioactive materials.

    (a) Radioactive materials that may be stowed or transported in bulk 
are limited to those radioactive materials defined in 49 CFR 173.403 as 
Low Specific Activity Material, LSA-1, or Surface Contaminated Object, 
SCO-1.
    (b) Skin contact, inhalation or ingestion of dusts generated by 
Class 7 material listed in Table 148.10 of this part must be minimized.
    (c) Each hold used for the transportation of Class 7 material 
(radioactive) listed in Table 148.10 of this part must

[[Page 88]]

be surveyed after the completion of off-loading by a qualified person 
using appropriate radiation detection instruments. Such holds must not 
be used for the transportation of any other material until the non-fixed 
contamination on any surface, when averaged over an area of 300 cm\2\, 
does not exceed the following levels:
    (1) 4.0 Bq/cm\2\ (10-4 uCi/cm\2\;) for beta and gamma 
emitters and low toxicity alpha emitters, natural uranium, natural 
thorium, uranium-235, uranium-238, thorium-232, thorium-228 and thorium-
230 when contained in ores or physical or chemical concentrates, and 
radionuclides with a half-life of less than 10 days; and
    (2) 0.4 Bq/cm\2\ (10-5 uCi/cm\2\) for all other alpha 
emitters.



Sec. 148.310  Seed cake.

    (a) This part does not apply to solvent-extracted rape seed meal, 
pellets, soya bean meal, cotton seed meal, or sunflower seed meal that--
    (1) Contains a maximum of 4 percent vegetable oil and a maximum of 
15 percent vegetable oil and moisture combined; and
    (2) As far as practical, is free from flammable solvent.
    (b) This part does not apply to mechanically expelled citrus pulp 
pellets containing not more than 2.5 percent oil and a maximum of 14 
percent oil and moisture combined.
    (c) Before loading, the seed cake must be aged per the instructions 
of the shipper.
    (d) Before loading, the shipper must give the master or person in 
charge of a barge a certificate from a competent testing laboratory 
stating the oil and moisture content of the seed cake.
    (e) The seed cake must be kept as dry as practical at all times.
    (f) If the seed cake is solvent-extracted, it must be--
    (1) As free as practical from flammable solvent; and
    (2) Stowed in a mechanically ventilated hold.
    (g) For a voyage with a planned duration greater than 5 days, the 
vessel must be equipped with facilities for introducing carbon dioxide 
or another inert gas into the hold.
    (h) Temperature readings of the seed cake must be taken at least 
once in every 24-hour period. If the temperature exceeds 55  deg.C (131 
deg.F) and continues to increase, ventilation to the cargo hold must be 
discontinued. If heating continues after ventilation has been 
discontinued, carbon dioxide or the inert gas required under paragraph 
(g) of this section must be introduced into the hold. If the seed cake 
is solvent-extracted, the use of inert gas must not be introduced until 
fire is apparent, to avoid the possibility of igniting the solvent 
vapors by the generation of static electricity.
    (i) Seed cake must be carried under the terms of a Special Permit 
issued by the Commandant (CG-ENG-5) per subpart B of this part if--
    (1) The oil was mechanically expelled; and
    (2) It contains more than 10 percent vegetable oil or more than 20 
percent vegetable oil and moisture combined.



Sec. 148.315  Sulfur.

    (a) This part applies to lump or coarse grain powder sulfur only. 
Fine-grained powder (``flowers of sulfur'') may not be transported in 
bulk.
    (b) After the loading or unloading of lump or coarse grain powder 
sulfur has been completed, sulfur dust must be removed from the vessel's 
decks, bulkheads, and overheads. Cargo residues and deck sweepings must 
be disposed of pursuant to 33 CFR 151.55 through 151.77.
    (c) A cargo space that contains sulfur or the residue of a sulfur 
cargo must be adequately ventilated, preferably by mechanical means. 
Each ventilator intake must be fitted with a spark-arresting screen.



Sec. 148.320  Tankage; garbage tankage; rough ammonia tankage; or 
tankage fertilizer.

    (a) This part applies to rough ammonia tankage in bulk that contains 
7 percent or more moisture by weight, and garbage tankage and tankage 
fertilizer that contains 8 percent or more moisture by weight.
    (b) Tankage to which this part applies may not be loaded in bulk if 
its temperature exceeds 38  deg.C (100  deg.F).

[[Page 89]]

    (c) During the voyage, the temperature of the tankage must be 
monitored often enough to detect spontaneous heating.



Sec. 148.325  Wood chips; wood pellets; wood pulp pellets.

    (a) This part applies to wood chips and wood pulp pellets in bulk 
that may oxidize, leading to depletion of oxygen and an increase in 
carbon dioxide in the cargo hold.
    (b) No person may enter a cargo hold containing wood chips, wood 
pellets, or wood pulp pellets, unless--
    (1) The atmosphere in the cargo hold has been tested and contains 
enough oxygen to support life; or
    (2) The person entering the cargo hold is wearing the appropriate 
self-contained breathing apparatus.



Sec. 148.330  Zinc ashes; zinc dross; zinc residues; zinc skimmings.

    (a) The shipper must inform the cognizant Coast Guard Captain of the 
Port in advance of any cargo transfer operations involving zinc ashes, 
zinc dross, zinc residues, or zinc skimmings (collectively, ``zinc 
material'') in bulk.
    (b) Zinc material must be aged by exposure to the elements for at 
least one year before shipment in bulk.
    (c) Before loading in bulk, zinc material must be stored under cover 
for a period of time to ensure that it is as dry as practical. No zinc 
material that is wet may be accepted for shipment.
    (d) Zinc material may not be loaded in bulk if its temperature is 
greater than 11.1  deg.C (52  deg.F) in excess of the ambient 
temperature.
    (e) Paragraphs (e)(1) through (e)(5) of this section apply only when 
zinc materials are carried by a cargo vessel:
    (1) Zinc material in bulk must be stowed in a mechanically 
ventilated hold that--
    (i) Is designed for at least one complete air change every 30 
minutes based on the empty hold;
    (ii) Has explosion-proof motors approved for use in Class I, 
Division 1, Group B atmospheres or equivalent motors approved by the 
vessel's flag state administration for use in hydrogen atmospheres; and
    (iii) Has nonsparking fans.
    (2) Combustible gas detectors capable of measuring hydrogen 
concentrations of 0 to 4.1 percent by volume must be permanently 
installed in holds that will carry zinc material. If the concentration 
of hydrogen in the space above the cargo exceeds 1 percent by volume, 
the ventilation system must be run until the concentration drops below 1 
percent by volume.
    (3) Thermocouples must be installed approximately 6 inches below the 
surface of the zinc material or in the space immediately above the zinc 
material. If an increase in temperature is detected, the mechanical 
ventilation system required by paragraph (d) of this section must be 
used until the temperature of the zinc material is below 55  deg.C (131 
deg.F).
    (4) Except as provided in paragraph (e)(5) of this section, the 
cargo hatches of holds containing zinc material must remain sealed to 
prevent the entry of seawater.
    (5) If the concentration of hydrogen is near 4.1 percent by volume 
and increasing, despite ventilation, or the temperature of the zinc 
material reaches 65  deg.C (150  deg.F), the cargo hatches should be 
opened provided that weather and sea conditions are favorable. When 
hatches are opened take care to prevent sparks and minimize the entry of 
water.



                Subpart F_Additional Special Requirements



Sec. 148.400  Applicability.

    Unless stated otherwise, the requirements of this subpart apply only 
to the shipment or loading of materials, listed in Table 148.10 of this 
part, for which Table 148.10 contains a reference to a section or 
paragraph of this subpart.



Sec. 148.405  Sources of ignition.

    (a) Except in an emergency, no welding, burning, cutting, chipping, 
or other operations involving the use of fire, open flame, sparks, or 
arc-producing equipment, may be performed in a cargo hold containing a 
Table 148.10 material or in an adjacent space.
    (b) A cargo hold or adjacent space must not have any flammable gas 
concentrations over 10 percent of the LFL

[[Page 90]]

before the master may approve operations involving the use of fire, open 
flame, or spark- or arc-producing equipment in that hold or adjacent 
space.



Sec. 148.407  Smoking.

    When Table 148.10 of this part associates a material with a 
reference to this section, and that material is being loaded or 
unloaded, smoking is prohibited anywhere on the weatherdeck of the 
vessel. While such a material is on board the vessel, smoking is 
prohibited in spaces adjacent to the cargo hold and on the vessel's deck 
in the vicinity of cargo hatches, ventilator outlets, and other accesses 
to the hold containing the material. ``NO SMOKING'' signs must be 
displayed in conspicuous locations in the areas where smoking is 
prohibited.



Sec. 148.410  Fire hoses.

    When Table 148.10 of this part associates a material with a 
reference to this section, a fire hose must be available at each hatch 
through which the material is being loaded.



Sec. 148.415  Toxic gas analyzers.

    When Table 148.10 of this part associates a material with a 
reference to a paragraph in this section, each vessel transporting the 
material, other than an unmanned barge, must have on board a gas 
analyzer appropriate for the toxic gas listed in that paragraph. At 
least two members of the crew must be knowledgeable in the use of the 
equipment. The equipment must be maintained in a condition ready for use 
and calibrated according to the instructions of its manufacturer. The 
atmosphere in the cargo hold and adjacent spaces must be tested before a 
person is allowed to enter these spaces. If toxic gases are detected, 
the space must be ventilated and retested before entry. The toxic gases 
for which the requirements of this section must be met are:
    (a) Arsine;
    (b) Carbon monoxide;
    (c) Hydrogen cyanide;
    (d) Hydrogen sulfide;
    (e) Phosphine; and
    (f) Sulfur dioxide.



Sec. 148.420  Flammable gas analyzers.

    When Table 148.10 of this part associates a material with a 
reference to a paragraph in this section, each vessel transporting the 
material, other than an unmanned barge, must have on board a gas 
analyzer appropriate for the flammable gas listed in that paragraph. At 
least two members of the crew must be knowledgeable in the use of the 
equipment. The equipment must be maintained in a condition ready for 
use, capable of measuring 0 to 100 percent LFL for the gas indicated, 
and calibrated in accordance with the instructions of its manufacturer. 
The atmosphere in the cargo hold must be tested before any person is 
allowed to enter. If flammable gases are detected, the space must be 
ventilated and retested before entry. The flammable gases for which the 
requirements of this section must be met are:
    (a) Carbon monoxide;
    (b) Hydrogen; and
    (c) Methane.



Sec. 148.435  Electrical circuits in cargo holds.

    During transport of a material that Table 148.10 of this part 
associates with a reference to this section, each electrical circuit 
terminating in a cargo hold containing the material must be electrically 
disconnected from the power source at a point outside of the cargo hold. 
The point of disconnection must be marked to prevent the circuit from 
being reenergized while the material is on board.



Sec. 148.445  Adjacent spaces.

    When transporting a material that Table 148.10 of this part 
associates with a reference to this section, the following requirements 
must be met:
    (a) Each space adjacent to a cargo hold must be ventilated by 
natural ventilation or by ventilation equipment safe for use in an 
explosive gas atmosphere.
    (b) Each space adjacent to a cargo hold containing the material must 
be regularly monitored for the presence of the flammable gas indicated 
by reference to Sec. 148.420 of this part. If the level of flammable gas 
in any space reaches 30 percent of the LFL, all electrical equipment 
that is not certified

[[Page 91]]

safe for use in an explosive gas atmosphere must be de-energized at a 
location outside of that space. This location must be labeled to 
prohibit reenergizing until the atmosphere in the space is tested and 
found to be less than 30 percent of the LFL.
    (c) Each person who enters any space adjacent to a cargo hold or 
compartment containing the material must wear a self-contained breathing 
apparatus unless--
    (1) The space has been tested, or is routinely monitored, for the 
appropriate flammable gas and oxygen;
    (2) The level of flammable gas is less than 10 percent of the LFL; 
and
    (3) The level of toxic gas, if required to be tested, is less than 
the TLV.
    (d) No person may enter an adjacent space if the level of flammable 
gas is greater than 30 percent of the LFL. If emergency entry is 
necessary, each person who enters the space must wear a self-contained 
breathing apparatus and caution must be exercised to ensure that no 
sparks are produced.



Sec. 148.450  Cargoes subject to liquefaction.

    (a) This section applies only to cargoes identified in Table 148.10 
of this part with a reference to this section and cargoes identified in 
the IMSBC Code (incorporated by reference, see Sec. 148.8) as cargoes 
that may liquefy.
    (b) This section does not apply to--
    (1) Shipments by unmanned barge; or
    (2) Cargoes of coal that have an average particle size of 10mm (.394 
in.) or greater.
    (c) Definitions as used in this section--
    (1) Cargo subject to liquefaction means a material that is subject 
to moisture migration and subsequent liquefaction if shipped with 
moisture content in excess of the transportable moisture limit.
    (2) Moisture migration is the movement of moisture by settling and 
consolidation of a material, which may result in the development of a 
flow state in the material.
    (3) Transportable moisture limit or TML of a cargo that may liquefy 
is the maximum moisture content that is considered safe for carriage on 
vessels.
    (d) Except on a vessel that is specially constructed or specially 
fitted for the purpose of carrying such cargoes (see also section 7 of 
the IMSBC Code, incorporated by reference, see Sec. 148.8), a cargo 
subject to liquefaction may not be transported by vessel if its moisture 
content exceeds its TML.
    (e) The shipper of a cargo subject to liquefaction must give the 
master the material's moisture content and TML.
    (f) The master of a vessel shipping a cargo subject to liquefaction 
must ensure that--
    (1) A cargo containing a liquid is not stowed in the same cargo 
space with a cargo subject to liquefaction; and
    (2) Precautions are taken to prevent the entry of liquids into a 
cargo space containing a cargo subject to liquefaction.
    (g) The moisture content and TML of a material may be determined by 
the tests described in Appendix 2, Section 1, of the IMSBC Code 
(incorporated by reference, see Sec. 148.8).

                           PART 149 [RESERVED]

[[Page 92]]



               SUBCHAPTER O_CERTAIN BULK DANGEROUS CARGOES





PART 150_COMPATIBILITY OF CARGOES--Table of Contents



Sec.
150.105  OMB control numbers assigned pursuant to the Paperwork 
          Reduction Act.
150.110  Applicability.
150.115  Definitions.
150.120  Definition of incompatible cargoes.
150.130  Loading a cargo on vessels carrying cargoes with which it is 
          incompatible.
150.140  Cargoes not listed in Table I or II.
150.150  Exceptions to the compatibility chart.
150.160  Carrying a cargo as an exception to the compatibility chart.
150.170  Right of appeal.

Figure I to Part 150--Compatibility Chart
Table I to Part 150--Alphabetical List of Cargoes
Table II to Part 150--Grouping of Cargoes
Appendix I to Part 150--Exceptions to the Chart
Appendix II to Part 150--Explanation of Figure 1
Appendix III to Part 150--Testing Procedures for Determining Exceptions 
          to the Chart
Appendix IV to Part 150--Data Sheet

    Authority: 46 U.S.C. 3306, 3703; Department of Homeland Security 
Delegation No. 0170.1. Section 150.105 issued under 44 U.S.C. 3507; 
Department of Homeland Security Delegation No. 0170.1.

    Source: CGD 75-59, 45 FR 70263, Oct. 23, 1980, unless otherwise 
noted.

    Editorial Note: Nomenclature changes to part 150 appear by USCG-
2012-0832, 77 FR 59783, Oct. 1, 2012.



Sec. 150.105  OMB control numbers assigned pursuant to the Paperwork
Reduction Act.

    (a) Purpose. This section collects and displays the control numbers 
assigned to information collection and recordkeeping requirements in 
this subchapter by the Office of Management and Budget (OMB) pursuant to 
the Paperwork Reduction Act of 1980 (44 U.S.C. 3501 et seq.). The Coast 
Guard intends that this section comply with the requirements of 44 
U.S.C. 3507(f) which requires that agencies display a current control 
number assigned by the Director of the OMB for each approved agency 
information collection requirement.
    (b) Display.

------------------------------------------------------------------------
                                                          Current OMB
 46 CFR part or section where identified or described     control No.
------------------------------------------------------------------------
Sec.  150.01-15......................................          1625-0007
Sec.  153.5..........................................          1625-0007
Sec.  153.905........................................          1625-0094
Sec.  153.910........................................          1625-0094
Sec.  153.968........................................          1625-0094
Part 154.............................................          1625-0029
Sec.  154.12.........................................          1625-0007
------------------------------------------------------------------------


[49 FR 38121, Sept. 27, 1984, as amended by CGD 77-069, 52 FR 31626, 
Aug. 21, 1987; USCG-2004-18884, 69 FR 58349, Sept. 30, 2004]



Sec. 150.110  Applicability.

    This subpart prescribes rules for identifying incompatible hazardous 
materials and rules for carrying these materials in bulk as cargo in 
permanently attached tanks or in tanks that are loaded or discharged 
while aboard the vessel. The rules apply to all vessels that carry 
liquid dangerous cargoes in bulk that are subject to 46 U.S.C. Chapter 
37.

[CGD 95-028, 62 FR 51209, Sept. 30, 1997]



Sec. 150.115  Definitions.

    As used in this subpart: Hazardous material means:
    (a) A flammable liquid as defined in Sec. 30.10-22 or a combustible 
liquid as defined in Sec. 30.10-15 of this chapter;
    (b) A material listed in Table 151.05, Table 1 of part 153, or Table 
4 of part 154 of this chapter; or
    (c) A liquid, liquefied gas, or compressed gas listed in 49 CFR 
172.101.
    Person in charge means the master of a self-propelled vessel, or the 
person in charge of a barge.



Sec. 150.120  Definition of incompatible cargoes.

    Except as described in Sec. 150.150, a cargo of hazardous material 
is incompatible with another cargo listed in Table I if the chemical 
groups of the two cargoes have an ``X'' where their columns intersect in 
Figure 1 and are not shown as exceptions in Appendix I. (See also 
Sec. 150.140.)

[CGD 83-047, 50 FR 33038, Aug. 16, 1985]

[[Page 93]]



Sec. 150.130  Loading a cargo on vessels carrying cargoes with which it
is incompatible.

    Except as described in Sec. 150.160, the person in charge of a 
vessel shall ensure that the containment system for a cargo that is a 
hazardous material meets the following requirements:
    (a) The containment system must separate the hazardous material or 
its residue from any cargo in table I with which it is incompatible by 
two barriers such as formed by a:
    (1) Cofferdam;
    (2) Empty tank;
    (3) Void space;
    (4) Cargo handling space;
    (5) Tank containing a compatible cargo; or
    (6) Piping tunnel.
    (b) In this subpart, isolation across a cruciform joint is 
equivalent to isolation by two barriers.
    (c) The containment system for the hazardous material must not have 
a piping or venting system that connects to a containment system 
carrying a cargo with which the hazardous material is incompatible. Any 
such piping or venting system must have been separated from the 
containment system carrying the incompatible cargo by:
    (1) Removing a valve or spool piece and blanking off the exposed 
pipe ends, or
    (2) Installing two spectacle flanges in series with a means of 
detecting leakage into the pipe between the spectacle flanges.



Sec. 150.140  Cargoes not listed in Table I or II.

    A cargo of hazardous material not listed in Table I or II must be 
handled as if incompatible with all other cargoes until the Commandant 
CG-ENG-5) (Telephone 202-372-1420) assigns the hazardous material to a 
compatibility group. (Table I lists cargoes alphabetically while Table 
II lists cargoes by compatibility group).

[CGD 83-047, 50 FR 33038, Aug. 16, 1985, CGD 86-100, 52 FR 21037, June 
4, 1987; CGD 95-072, 60 FR 50465, Sept. 29, 19955; CGD 96-041, 61 FR 
50731, Sept. 27, 1996; USCG-2006-25697, 71 FR 55746, Sept. 25, 2006]



Sec. 150.150  Exceptions to the compatibility chart.

    The Commandant (CG-ENG-5) authorizes, on a case by case basis, 
exceptions to the rules in this subpart under the following conditions:
    (a) When two cargoes shown to be incompatible in Figure 1 meet the 
standards for a compatible pair in Appendix III, or
    (b) When two cargoes shown to be compatible in Figure 1 meet the 
standards for an incompatible pair in Appendix III.
    Appendix I contains cargoes which have been found to be exceptions 
to Figure 1, the Compatibility Chart.

[CGD 83-047, 50 FR 33038, Aug. 16, 1985, as amended at CGD 95-072, 60 FR 
50465, Sept. 29, 1995; CGD 96-041, 61 FR 50731, Sept. 27, 1996]



Sec. 150.160  Carrying a cargo as an exception to the compatibility chart.

    The Operator of a vessel having on board a cargo carried as an 
exception under Sec. 150.150 but not listed in Appendix I, Exceptions to 
the Chart, shall make sure that:
    (a) The Commandant (CG-ENG-5) has authorized by letter or message 
the cargo pair as an exception to the compatibility chart; and
    (b) A copy of the letter or message is on the vessel.

[CGD 75-59, 45 FR 70263, Oct. 23, 1980, as amended by CGD 82-063b, 48 FR 
4781, Feb. 3, 1983; CGD 83-047, 50 FR 33038, Aug. 16, 1985; CGD 95-072, 
60 FR 50465, Sept. 29, 19955; CGD 96-041, 61 FR 50731, Sept. 27, 1996]



Sec. 150.170  Right of appeal.

    Any person directly affected by a decision or action taken under 
this part, by or on behalf of the Coast Guard, may appeal therefrom in 
accordance with subpart 1.03 of this chapter.

[CGD 88-033, 54 FR 50381, Dec. 6, 1989]

[[Page 94]]



             Sec. Figure 1 to Part 150--Compatibility Chart
[GRAPHIC] [TIFF OMITTED] TC02FE91.079



         Sec. Table I to Part 150--Alphabetical List of Cargoes

----------------------------------------------------------------------------------------------------------------
                                            Group
              Chemical name                  No.    Footnote      CHRIS Code           Related CHRIS Codes
----------------------------------------------------------------------------------------------------------------
Acetaldehyde.............................       19  ........  AAD
Acetic acid..............................        4         2  AAC
Acetic anhydride.........................       11         2  ACA
Acetochlor...............................       10  ........  ACG
Acetone..................................       18         2  ACT
Acetone cyanohydrin......................        0      1, 2  ACY
Acetonitrile.............................       37  ........  ATN
Acetonitrile (low purity grade) *........       37         3  AIL
Acetophenone.............................       18  ........  ACP
Acid oil mixture from soybean, corn             34         3  .................  AOM.
 (maize) and sunflower oil refining, see
 Oil, misc: Acid mixture from soybean,
 corn (maize) and sunflower oil refining
 *.
Acrolein.................................       19         2  ARL
Acrylamide solution (50% or less) *......       10         3  AAM                AAO.
Acrylic acid.............................        4         2  ACR
Acrylic acid/ethenesulfonic acid                30         3  APG
 copolymer with phosphonate groups,
 sodium salt solution *.
Acrylonitrile............................       15         2  ACN
Acrylonitrile-Styrene copolymer                 20  ........  ALE
 dispersion in Polyether polyol.
Adiponitrile.............................       37  ........  ADN
Alachlor technical (90% or more) *.......       33         3  ALH                ALI.
Alcohol (C12-C13, branched and linear)          41         3  ABL
 poly (4-8) propoxy sulfates, sodium salt
 25-30% solution *.
Alcohol (C9-C11) poly (2.5-9) ethoxylates       40         3  AET                ALY/APV/APW.
 *.

[[Page 95]]

 
Alcohol (C6-C17) (secondary) poly (3-6)         40         3  AEA                AEB.
 ethoxylates *.
Alcohol (C6-C17) (secondary) poly (7-12)        40         3  AEB                AEA.
 ethoxylates *.
Alcohol (C12-C16) poly (1-6) ethoxylates        40         3  AED                AET/ALY/APW.
 *.
Alcohol (C12-C16) poly (7-19) ethoxylates       40         3  APV                AET/ALY/APV.
 *.
Alcohol (C12-C16) poly (20 + )                  40         3  APW                AET/ALY.
 ethoxylates *.
Alcoholic beverages, n.o.s.*.............       20         3  ABV
Alcohols (C13 + )........................       20  ........  ALY                ASY/AYK.
    Including:
        Oleyl alcohol (octadecenol)......
        Pentadecanol.....................
        Tallow alcohol...................
        Tetradecanol.....................
        Tridecanol.......................
Alcohol polyethoxylates..................       20  ........  .................  AEA/AEB/AED/AET/APV/APW.
Alcohol polyethoxylates, secondary.......       20  ........  .................  AEA/AEB.
Alcohol (C12-C15) poly (. . .)                  20
 ethoxylate, see Alcohol (C12-C16) poly
 (. . .) ethoxylate.
Alcohols (C12 + ), primary, linear *.....       20         3  ASY                ALR/AYK/AYL.
Alcohols (C8-C11), primary, linear and          20  ........  ALR                AYK/AYL.
 essentially linear.
Alcohols (C12-C13), primary, linear and         20         3  AYK                ALR/ASY/AYL.
 essentially linear *.
Alcohols (C14-C18), primary, linear and         20         3  AYL                ALR/ASY/AYK.
 essentially linear *.
Alkanes (C6-C9)..........................       31  ........  ALK
    Including:
        Heptanes.........................
        Hexanes..........................
        Nonanes..........................
        Octanes..........................
iso- & cyclo-Alkanes (C10-C11)...........       31  ........  AKI
iso- & cyclo-Alkanes (C12 + )............       31  ........  AKJ
Alkanes (C10-C26), linear and branched          31         3  ABD
 (flash point >60 C) *.
n-Alkanes (C10 + ) (all isomers).........       31  ........  ALV                ALJ.
    Including:
        Decanes..........................
        Dodecanes........................
        Heptadecanes.....................
        Tridecanes.......................
        Undecanes........................
Alkane (C14-C17) sulfonic acid, sodium          34  ........  AKA                SAA (AKE/SSU).
 salt solutions, see Sodium alkyl (C14-
 C17) sulfonates (60-65% solution).
Alkaryl polyethers (C9-C20)..............       41  ........  AKP
Alkenoic acid, polyhydroxy ester borated         0      1, 3  AAY
 *.
Alkenyl(C11 + )amide.....................       10  ........  AKM
Alkenyl (C8 + ) amine, Alkenyl (C12 + )
 acid ester mixture.
Alkenyl (C16-C20) succinic anhydride.....       11  ........  AAH
Alkyl acrylate-Vinyl pyridine copolymer         32  ........  AAP
 in Toluene.
Alkyl amine (C17 + ).....................        7  ........  AKY
Alkylaryl phosphate mixtures (more than         34  ........  ADP
 40% Diphenyl tolyl phosphate, less than
 0.02% ortho-isomers).
Alkylated (C4-C9) hindered phenols *.....       21         3  AYO
Alkyl(C3-C4)benzenes.....................       32  ........  AKC
    Including:
        Butylbenzenes....................
        Cumene...........................
        Propylbenzenes...................
Alkyl(C5-C8)benzenes.....................       32  ........  AKD.
    Including:
        Amylbenzenes.....................
        Heptylbenzenes...................
        Hexylbenzenes....................
        Octylbenzenes....................
Alkyl(C9 + )benzenes.....................       32  ........  AKB
    Including:
        Decylbenzenes....................
        Dodecylbenzenes..................
        Nonylbenzenes....................
        Tetradecylbenzenes...............
        Tetrapropylbenzenes..............
        Tridecylbenzenes.................
        Undecylbenzenes..................
Alkylbenzene, Alkylindane, Alkylindene          32  ........  AIH
 mixture (each C12-C17).
Alkyl benzene distillation bottoms *.....        0      1, 3  ABB
Alkylbenzene mixtures (containing at            32         3  AZT
 least 50% of Toluene) *.

[[Page 96]]

 
Alkyl (C11-C17) benzene sulfonic acid *..        0      1, 3  ABN                ABS/ABQ.
Alkylbenzenesulfonic acid (less than 4%).        0      1, 2  ABQ                ABS/ABN.
Alkylbenzene sulfonic acid, sodium salt         33  ........  ABT
 solution.
Alkyl (C12 + ) dimethylamine *...........        7         3  ADM
Alkyl dithiocarbamate (C19-C35) *........       34         3  ADB
Alkyl dithiothiadiazole (C6-C24).........       33  ........  ADT
Alkyl polyglucoside solution, see               43  ........  AGD                AGL/AGM AGN/AGO/AGP.
 individual polyglucoside solution.
Alkyl ester copolymer (C4-C20)...........       34  ........  AES                AEQ.
Alkyl (C8-C10)/(C12-C14):(40% or less/60%       43         3  AGN                AGD/AGL AGM/AGO/AGP.
 or more) polyglucoside solution (55% or
 less) *.
Alkyl (C8-C10)/(C12-C14):(50%/50%)              43         3  AGO                AGD/AGL/AGN/AGP.
 polyglucoside solution (55% or less) *.
Alkyl (C8-C10)/(C12-C14):(60% or more/40%       43         3  AGP                AGD/AGL/AGM/AGN/AGO.
 or less) polyglucoside solution (55% or
 less) *.
Alkyl(C7-C9) nitrates....................       34         2  AKN                ONE.
Alkyl (C4-C9) phenols....................       21  ........  AYI                BLT/BTP/NNP/OPH.
Alkyl(C7-C11) phenol poly(4-12)ethoxylate       40  ........  APN                NPE.
Alkyl (C8-C40) phenol sulfide............       34  ........  AKS
Alkyl phenol sulfide (C8-C40), see Alkyl        34  ........  .................  AKS.
 (C8-C40) phenol sulfide.
Alkyl(C8-C9) phenylamine in aromatic             9  ........  ALP
 solvents.
Alkyl(C9-C15) phenyl propoxylate.........       40  ........  AXL
Alkyl (C8-C10) polyglucoside solution           43         3  AGL                AGD/AGM/AGN/AGO/AGP.
 (65% or less) *.
Alkyl (C12-C14) polyglucoside solution          43         3  AGM                AGD/AGL/AGN/AGO/AGP.
 (55% or less) *.
Alkyl (C12-C16) propoxyamine ethoxylate *        8         3  AXE                LPE.
Alkyl ester copolymer in mineral oil.....       34  ........  AEQ                AES.
Alkyl phthalates, see individual                34  ........  AYS
 phthalates.
Alkyl(C10-C20), saturated and unsaturated       34  ........  AKL
 phosphite.
Alkyl succinic anhydride.................       11  ........  AUA
Alkyl sulfonic acid ester of phenol......       34  ........  AKH
Alkyl (C18 + ) toluenes *................       32         3  AUS                AYL.
Alkyl toluene............................       32  ........  AYL                AUS.
Alkyl (C18-C28) toluenesulfonic acid *...        0      1, 3  AUU
Alkyl (C18-C28) toluenesulfonic acid,           34         3  AUB
 Calcium salts, borated *.
Alkyl (C18-C28) toluenesulfonic acid,           33         3  AUL
 Calcium salts, low overbase *.
Alkyl (C18-C28) toluenesulfonic acid,           33         3  AUC
 Calcium salts, high overbase *.
Allyl alcohol............................       15         2  ALA
Allyl chloride...........................       15  ........  ALC
Aluminum chloride, Hydrochloric acid             0         1  AHS                AHG.
 solution, see ``Aluminum chloride/
 Hydrogen chloride solution''.
Aluminum chloride/Hydrogen chloride              0       1,3  AHG                AHS.
 solution *.
Aluminum hydroxide, sodium hydroxide,           43         3  AHN
 sodium carbonate solution (40% or less)
 *.
Aluminum sulfate solution................       43         2  ASX                ALM.
Amine C-6, morpholine process residue....        9  ........  AOI
2-(2-Aminoethoxy)ethanol.................        8  ........  AEX
Aminoethyldiethanolamine/                        8  ........  ADY
 Aminoethylethanolamine solution.
Aminoethylethanolamine...................        8  ........  AEE
N-Aminoethylpiperazine...................        7  ........  AEP
2-Amino-2-hydroxymethyl-1,3-propanediol         43  ........  AHL
 solution.
2-Amino-2-methyl-1-propanol..............        8  ........  APZ                APQ/APR.
Ammonia, anhydrous.......................        6  ........  AMA
Ammonia, aqueous (28% or less Ammonia),          6  ........  .................  AMH.
 see Ammonium hydroxide.
Ammonium bisulfite solution (70% or less)       43         2  ABX                ASU.
Ammonium chloride solution (less than           43         3  AIS                AMC.
 25%) *.
Ammonium hydrogen phosphate solution.....        0         1  AMI
Ammonium hydroxide (28% or less Ammonia).        6  ........  AMH
Ammonium lignosulfonate solution, see           43  ........  ALG                LNL.
 also Lignin liquor.
Ammonium nitrate solution (93% or less)..        0         1  ANW                AMN/AND/ANR.
Ammonium nitrate solution (45% or less)..        0         1  AND                AMN/ANR/ANW.
Ammonium nitrate/Urea solution                   6  ........  .................  UAS (ANU/UAT/UAU/UAV).
 (containing Ammonia), see Urea/Ammonium
 nitrate solution (containing more than
 2% Ammonia).
Ammonium nitrate/Urea solution                   6  ........  .................  UAT (ANU/UAS/UAU/UAV).
 (containing less than 2% free Ammonia),
 see Urea/Ammonium nitrate solution
 (containing less than 2% free Ammonia).
Ammonium nitrate/Urea solution (not              6  ........  .................  UAU (ANU/UAS/UAT/UAV).
 containing Ammonia), see Urea/Ammonium
 nitrate solution (containing less than
 1% Ammonia).
Ammonium phosphate/Urea solution, see           43  ........  .................  UAP (APP/URE).
 Urea/Ammonium phosphate solution.
Ammonium polyphosphate solution..........       43  ........  AMO
Ammonium sulfate solution................       43  ........  ASW                AME/AMS.

[[Page 97]]

 
Ammonium sulfate solution (20% or less)..       43  ........  AME                AMS/ASW.
Ammonium sulfide solution (45% or less *)        5         3  ASS                ASF.
Ammonium thiocyanate/Ammonium thiosulfate        0         1  ACV                ACS.
 solution.
Ammonium thiosulfate solution (60% or           43         3  ATV                ATF.
 less *).
Amyl acetate (all isomers *).............       34         3  AEC                IAT/AML/AAS/AYA.
Amyl acid phosphate......................       34  ........  AIA
n *-Amyl alcohol.........................       20         3  AAN                AAI/AAL/APM/ASE/IAA.
Amyl alcohol, primary *..................       20         3  APM                AAI/AAL/ANN/APM/IAA.
sec-Amyl alcohol *.......................       20         3  ASE                AAI/AAL/ANN/APM/IAA.
tert-Amyl alcohol *......................       20         3  AAL                AAI/APM/ASE/IAA.
Amylene, see Pentene (all isomers).......       30  ........  AMW                PTX (AMX/AMZ/PTE).
tert-Amylenes, see Pentene...............       30  ........  AMZ                PTX (AMW).
tert-Amyl methyl ether...................       41  ........  AYE
Amyl methyl ketone, see Methyl amyl             18  ........  AMJ                MAK (AMK).
 ketone.
Aniline..................................        9  ........  ANL
Animal and Fish oils, n.o.s..............       34  ........  AFN
    Including:
        Cod liver oil....................
        Lanolin..........................
        Neatsfoot oil....................
        Pilchard oil.....................
        Sperm oil........................
Animal and Fish acid oils and                   34  ........  AFA
 distillates, n.o.s..
    Including:
        Animal acid oil..................
        Fish acid oil....................
        Lard acid oil....................
        Mixed acid oil...................
        Mixed general acid oil...........
        Mixed hard acid oil..............
        Mixed soft acid oil..............
Anthracene oil (Coal tar fraction), see         33  ........  AHO                COR.
 Coal tar.
Apple juice..............................       43  ........  APJ
Argon, liquefied.........................        0         1  ARG
Aryl polyolefins (C11-C50)...............       32  ........  AYF
Asphalt..................................       33  ........  ASP                ACU.
Asphalt blending stocks, roofers flux....       33  ........  ARF
Asphalt blending stocks, straight run           33  ........  ASR
 residue.
Asphalt emulsion.........................       33  ........  ASQ
Asphalt, Kerosene, and other components..       33  ........  AKO
Aviation alkylates (C8 paraffins and iso-       31         3  AVA                GAK/GAV.
 paraffins BPT 95-120 C *).
Barium long-chain (C11-C50) alkaryl             34  ........  BCA
 sulfonate.
Barium long- chain alkyl(C8-C14)phenate         34  ........  BCH
 sulfide.
Behenyl alcohol..........................       20  ........  BHY
Benzene..................................       32         2  BNZ                BHA/BHB/PYG.
Benzene and mixtures having 10% Benzene         32  ........  BHB                BHA/BNZ/PYG.
 or more.
Benzene hydrocarbon mixtures (containing        32  ........  BHA                BHB/BNZ/PYG.
 Acetylenes) (having 10% Benzene or more).
Benzene sulfonyl chloride................        0      1, 2  BSC
Benzene/Toluene/Xylene mixtures (having         32  ........  BTX                BHB/BNZ/PYG/TOL/XLX/XLM/XLO/
 10% Benzene or more).                                                            XLP.
Benzenetricarboxylic acid, trioctyl ester       34  ........  BCE
Benzyl acetate...........................       34  ........  BZE
Benzyl alcohol...........................       21  ........  BAL
Benzyl chloride..........................       36  ........  BCL
Bio-fuel blends of Diesel/gas oil and           33         3  BIF                BIG/BIH/BII/BIJ/BIK.
 Alkanes (C10-C26), linear and branched
 with a flash point >60 C (>25% but <99%
 by volume) *.
Bio-fuel blends of Diesel/gas oil and           33         3  BIG                BIF/BIH/BII/BIJ/BIK.
 Alkanes (C10-C26), linear and branched
 with a flash point >60 C (>25% but <99%
 by volume) *.
Bio-fuel blends of Diesel/gas oil and           34         3  BIH                BIF/BIG/BII/BIJ/BIK.
 FAME (>25% but <99% by volume) *.
Bio-fuel blends of Diesel/gas oil and           34         3  BII                BIF/BIG/BIH/BIJ/BIK.
 vegetable oil (>25% but <99% by volume)
 *.
Bio-fuel blends of Gasoline and Ethyl           20         3  BIJ                BIF/BIG/BIH/BII/BIK.
 alcohol (>25% but <99% by volume) *.
Boronated Calcium sulfonate..............       34  ........  BCU
Brake fluid base mix: Poly(2-8)alkylene         20         3  BFY
 (C2-C3) glycols/Polyalkylene (C2-C10)
 glycols monoalkyl (C1-C4) ethers and
 their borate esters *.
Brominated Epoxy Resin in Acetone........       41  ........  BER
Bromochloromethane.......................       36  ........  BCM
Butadiene (all isomers)..................       30  ........  BDI

[[Page 98]]

 
Butadiene/Butylene mixtures (containing         30  ........  BBM                BBX/BDI/BTN/IBL.
 Acetylenes).
Butane (all isomers).....................       31  ........  BMX                IBT/BUT.
Butane/Propane mixture...................       31  ........  BUP                LPG
1,4-Butanediol, see Butylene glycol......       20  ........  BDO                BUG.
2-Butanone, see Methyl ethyl ketone......       18  ........  .................  MEK.
Butene, see Butylene.....................  .......  ........  .................  BUT/IBL.
Butene oligomer..........................       30  ........  BOL
Butyl acetate (all isomers *)............       34         3  BAX                BCN/BTA/BYA/IBA.
Butyl acrylate (all isomers *)...........       14         3  BAR                BAI/BTC.
Butyl alcohol (iso-, n-, sec-, tert-),          20         2  .................  BAN/BAS/BAT/BAY/IAL.
 see Butyl alcohol (all isomers).
Butyl alcohol (all isomers *)............       20      2, 3  BAY                BAN/BAS/BAT/IAL.
Butylamine (all isomers *)...............        7         3  BTY                BAM/BTL/BUA/IAM.
Butylbenzene (all isomers *), see               32         3  BBE                AKC.
 Alkyl(C3-C4)benzenes.
Butyl benzyl phthalate...................       34  ........  BPH
Butyl butyrate (all isomers *)...........       34         3  BBA                BIB/BUB.
Butyl/Decyl/Cetyl/Eicosyl methacrylate          14         3  DER                BMH/BMI/BMN/CEM.
 mixture *.
Butylenes (all isomers)..................       30  ........  BTN                IBL.
n *-Butyl ether..........................       41  ........  BTE
Butylene glycol..........................       20         2  BUG                BDO.
1,2-Butylene oxide.......................       16  ........  BTO
n-Butyl ether............................       41         3  BTE
n-Butyl formate..........................       34  ........  BFN                BFI/BFO.
Butyl heptyl ketone......................       18  ........  BHK
Butyl methacrylate.......................       14  ........  BMH                BMI/BMN.
Butyl methacrylate, Decyl methacrylate,         34  ........  .................  DER (BMH/BMI/BMN/CEM).
 Cetyl-Eicosyl methacrylate mixture, see
 Butyl/Decyl/Cetyl/Eicosyl methacrylate.
Butyl methyl ketone, see Methyl butyl           18  ........  .................  MBJ (MBK/MIK).
 ketone.
n-Butyl propionate.......................       34  ........  BPN
Butyl stearate...........................       34  ........  BST
Butyl toluene............................       32  ........  BUE
Butyraldehyde (all isomers *)............       19         3  BAE                BAD/BTR.
Butyric acid.............................        4  ........  BRA                IBR.
gamma-Butyrolactone......................        0      1, 2  BLA
Calcium alkaryl sulfonate (C11-C50), see        34         3  CAE                CAY.
 Calcium long-chain alkaryl sulfonate
 (C11-C50) *.
Calcium alkyl(C9)phenol sulfide,                34  ........  CPX
 polyolefin phosphorosulfide mixture.
Calcium alkyl (C10-C28) salicylate *.....       34         3  CAJ
Calcium alkyl salicylate, see Calcium           34  ........  .................  CAJ/CAK/CAZ.
 long-chain alkyl salicylate (C13 + ),
 Calcium long-chain alkyl (C18-C28)
 salicylate, or Calcium alkyl (C10-C28)
 salicylate.
Calcium bromide solution, see Drilling          43  ........  CBI                DRS.
 brines.
Calcium bromide/Zinc bromide solution,          43  ........  .................  DZB.
 see Drilling brine (containing Zinc
 salts).
Calcium carbonate slurry.................       34  ........  CSR
Calcium chloride solution................       43  ........  CCS                CLC.
Calcium hydroxide slurry.................        5  ........  COH                CAH.
Calcium hypochlorite solution (15% or            5         3  CHU                CHY/CHZ.
 less *).
Calcium hypochlorite solution (more than         5         3  CHZ                CHU/CHY.
 15% *).
Calcium lignosulfonate solution, see also       43  ........  CLL                LNL.
 Lignin liquor.
Calcium long-chain alkaryl sulfonate (C11-      34  ........  CAY
 C50).
Calcium long-chain alkyl (C5-C10 *)             34         3  CAU                CAN/CAQ/CAV/CAW.
 phenate.
Calcium long-chain alkyl (C5-C20) phenate       34  ........  CAV                CAN/CAQ/CAU/CAW.
Calcium long-chain alkyl (C11-C40)              34         3  CAW                CAN/CAQ/CAU/CAV.
 phenate *.
Calcium long-chain alkyl (C8-C40)               34  ........  CAQ                CAU/CAV (CAN/CAW).
 phenate, see Calcium long-chain alkyl
 (C5-C10) phenate or Calcium long-chain
 alkyl (C11-C40) phenate.
Calcium long-chain alkyl phenate sulfide        34  ........  CPI
 (C8-C40).
Calcium long-chain alkyl phenolic amine          9  ........  CPQ
 (C8-C40).
Calcium long-chain alkyl salicylate (C13        34  ........  CAK                CAJ/CAZ.
 + ).
Calcium long-chain alkyl (C18-C28)              34         3  CAJ
 salicylate *.
Calcium nitrate solutions (50% or less *)       34         3  CNU                CNT.
Calcium nitrate/Magnesium nitrate/              34  ........  CLM                CNT/CNU/MGN/MGO/PCS/PCU/PSD.
 Potassium chloride solution.
Calcium salts of fatty acids.............       34  ........  CFF
Calcium stearate.........................       34  ........  CSE
Calcium sulfonate/Calcium carbonate/            33  ........  CSH
 Hydrocarbon solvent mixture.
Camelina oil *...........................       34         3  CEL
Camphor oil (light)......................       18  ........  CPO
Canola oil, see Oil, edible: Repeseed,          34  ........  .................  ORO (ORP).
 (low erucic acid containing less than 4%
 free fatty acids).
epsilon-Caprolactam (molten or aqueous          22         3  CLU                CLS.
 solutions) *.
Caramel solution.........................       43  ........  CML
Carbolic oil.............................       21  ........  CBO

[[Page 99]]

 
Carbon dioxide, liquefied................        0         1  CDO                CDH/CDQ.
Carbon dioxide (high purity).............        0         1  CDH                CDO/CDQ.
Carbon dioxide (reclaimed quality).......        0         1  CDQ                CDH/CDO.
Carbon disulfide.........................       38  ........  CBB
Carbon tetrachloride.....................       36         2  CBT                CBU.
Cashew nut shell oil (untreated), see            4  ........  .................  OCN.
 Oil, misc: Cashew nut shell (untreated).
Castor oil, see Oil, edible: Castor......       34  ........  .................  OCA (VEO).
Catoxid feedstock........................       36         2  CXF
Caustic potash solution..................        5         2  CPS
Caustic soda solution....................        5         2  CSS
Cesium formate solution *................       34         3  CSM
Cetyl alcohol, see Alcohols (C13 + ).....       20  ........  .................  ALY (ASY/AYL).
Cetyl/Eicosyl methacrylate mixture.......       14         1  CEM
Cetyl/Stearyl alcohol, see Alcohols (C13        20  ........  .................  ALY (ASY/AYL).
 + ).
Chlorinated paraffins (C10-C13)..........       36  ........  CLH                CLG/CLJ/CLQ.
Chlorinated paraffins (C14-C17) (with 50%       36         3  CLJ                CLG/CLH/CLQ.
 Chlorine or more, and less than 1% C13
 or shorter chains *).
Chlorinated paraffins (C14-C17) (with 52%       36  ........  CLQ                CLG/CLH/CLJ.
 Chlorine).
Chlorinated paraffins (C18 + ) with any         36  ........  CLG                CLH/CLJ.
 level of chlorine.
Chlorine.................................        0         1  CLX
Chloroacetic acid (80% or less *)........        4         3  CHM                CHL/MCA.
Chlorobenzene............................       36  ........  CRB
Chlorodifluoromethane                           36  ........  MCF
 (monochlorodifluoromethane).
2-Chloro-4-ethylamino-6-isopropylamino-5-        0         1  CET
 triazine solution.
Chloroform...............................       36  ........  CRF
Chlorohydrins (crude *)..................       17         3  CHD
4-Chloro-2-methylphenoxyacetic acid,             9  ........  CDM
 dimethylamine salt solution.
o-Chloronitrobenzene.....................       42  ........  CNO                CNP.
1-(4-Chlorophenyl)-4,4-dimethyl pentan-3-       18         2  CDP
 one.
2- or 3-Chloropropionic acid.............        4  ........  CPM                CLA/CLP.
Chlorosulfonic acid......................        0         1  CSA
m-Chlorotoluene *........................       36         3  CTM                CHI/CRN/CTO.
o-Chlorotoluene *........................       36         3  CTO                CHI/CRN/CTM.
p-Chlorotoluene *........................       36         3  CRN                CHI/CTM/CTO.
Chlorotoluenes (mixed isomers) *.........       36         3  CHI                CRN/CTM/CTO.
Choline chloride solution................       20  ........  CCO
Citric acid (70% or less *)..............        4         3  CIS                CIT.
Clay slurry..............................       43  ........  CLY
Coal slurry..............................       43  ........  COG                COA.
Coal tar.................................       33  ........  COR                OCT.
Coal tar crude bases.....................       33  ........  CTB
Coal tar distillate, see Naphtha: Coal          33  ........  CDL                NCT (CTU).
 tar solvent.
Coal tar naphtha solvent, see Naphtha:          33  ........  .................  NCT (CDL/CTU).
 Coal tar solvent.
Coal tar pitch (molten *)................       33         3  CTP
Cocoa butter, see Oil, edible: Cocoa            34  ........  .................  OCB (VEO).
 butter.
Coconut oil, see Oil, edible: Coconut....       34  ........  .................  OCC (VEO).
Coconut oil, fatty acid, see Oil, misc:         34         2  .................  CFA.
 Coconut fatty acid.
Coconut oil, fatty acid methyl ester, see       34         3  .................  OCM.
 Oil, misc: Coconut fatty acid methyl
 ester *.
Copper salt of long-chain (C17 + )              34  ........  CUS                CFT.
 alkanoic acid.
Copper salt of long-chain (C3-C16) fatty        34  ........  CFT                CUS.
 acid.
Corn oil, see Oil, edible: Corn..........       34  ........  .................  OCO (VEO).
Cotton seed oil, see Oil, edible: Cotton        34  ........  .................  OCS (VEO).
 seed.
Cottonseed oil, fatty acid...............       34  ........  CFY
Creosote.................................       21         2  CCW                CCT/CWD.
Creosote (coal tar *)....................       21      2, 3  CCT                CCW.
Creosote (wood tar *)....................       21      2, 3  CWD                CCT/CCW.
Cresols (all isomers *)..................       21         3  CRS                CFO/CFP/CRL/CRO/CSC/CSO.
Cresols with less than 5% Phenol, see           21  ........  CFO                CRS (CFP/CRL/CRO/CSO).
 Cresols (all isomers).
Cresols with 5% or more Phenol, see             21  ........  CFP                PHN (CFO/CRL/CRO/CRS/CSO).
 Phenol.
Cresylate spent caustic, see Cresylic            5  ........  CSC                CYD.
 acid, sodium salt solution.
Cresylic acid, dephenolized..............       21  ........  CAD                CRY/CYN.
Cresylic acid, sodium salt solution......        5  ........  CYD                CSC.
Cresylic acid with 5% or more phenol.....       21  ........  CYN                CAD/CRY.
Cresylic acid tar........................       21  ........  CRX
Crotonaldehyde...........................       19         2  CTA
Crude isononylaldehyde, see                     19  ........  .................  INC.
 Isononyldehyde (crude).
Crude isopropanol, see Isoproyl alcohol,        20  ........  .................  IPB (IPA/PAL).
 crude.
Crude piperazine, see Piperazine, crude..        7  ........  .................  PZC (PPZ/PIZ).

[[Page 100]]

 
Cumene, see Propylbenzene (all isomers)..       32  ........  CUM                AKD (PBY/PBZ).
1,5,9-Cyclododecatriene..................       30  ........  CYT
Cycloheptane.............................       31  ........  CYE
Cyclohexane..............................       31  ........  CHX
Cyclohexanol.............................       20  ........  CHN
Cyclohexanone............................       18         2  CCH
Cyclohexanone/Cyclohexanol mixture.......       18         2  CYX
Cyclohexyl acetate.......................       34  ........  CYC
Cyclohexylamine..........................        7  ........  CHA
1,3-Cyclopentadiene dimer (molten *).....       30         3  CPD                DPT/DPV.
Cyclopentadiene/Styrene/Benzene mixture..       30  ........  CSB
Cyclopentane.............................       31  ........  CYP
Cyclopentene.............................       30  ........  CPE
p *-Cymene...............................       32  ........  CMP
Decahydronaphthalene.....................       33  ........  DHN
Decaldehyde..............................       19  ........  DAY                IDA/DAL.
Decane (all isomers), see n-Alkanes (C10        31  ........  DCC                ALV (ALJ).
 + ) (all isomers).
Decanoic acid............................        4  ........  DCO                NEA.
Decene...................................       30  ........  DCE
Decyl acetate............................       34  ........  DYA
Decyl acrylate...........................       14  ........  DAT                IAI/DAR.
Decyl alcohol (all isomers *)............       20      2, 3  DAX                ISA/DAN.
Decyl/Dodecyl/Tetradecyl alcohol mixture        20         3  DYO                DAN/DAX/DDN/ISA.
 *.
Decylbenzene, see Alkyl(C9 + ) benzenes..       32  ........  DBZ                AKB.
Decyloxytetrahydrothiophene dioxide......        0         1  DHT
Detergent alkylate.......................       32  ........  DKY                AKB/DBZ/DDB/TDB/TRB/UDB.
Dextrose solution, see Glucose solution..       43  ........  DTS                GLU.
Diacetone alcohol........................       20         2  DAA
Dialkyl(C10-C14) benzenes, see Alkyl(C9 +       32  ........  DAB                AKB.
 ) benzenes.
Dialkyl(C8-C9) diphenylamines............        9  ........  DAQ
Dialkyl(C7-C13) phthalates...............       34  ........  DAH
    Including:
        Di-(2-ethylhexyl) phthalate......
        Diheptyl phthalate...............
        Dihexyl phthalate................
        Diisooctyl phthalate.............
        Diisodecyl phthalate.............
        Diisononyl phthalate.............
        Dinonyl phthalate................
        Dioctyl phthalate................
        Ditridecyl phthalate.............
        Diundecyl phthalate..............
Dialkyl (C9-C10) phthalates, see Dialkyl        34  ........  DLK                DLH (DAP/DHL/DHP/DID/DIE/DIF/
 (C7-C13) phthalates.                                                             DIN/DIO/DIT/DOP/DPA/DTP/DUP).
Dialkyl thiophosphates sodium salts             34         3  DYH
 solution *.
Dibromomethane...........................       36  ........  DBH
Dibutylamine.............................        7  ........  DBA
Dibutyl carbinol, see Nonyl alcohol (all        20  ........  .................  NNS (DBC/NNI/NNN).
 isomers).
Dibutyl hydrogen phosphonate.............       34  ........  DHD
Dibutylphenols...........................       21  ........  DBT                DBV/DBW.
2,6-Di-tert-butylphenol *................       21         3  DBW                DBF/DBT/DBV.
Dibutyl phthalate........................       34  ........  DPA                DIT.
Dibutyl terephthalate *..................       34         3  DYE
Dichlorobenzene (all isomers *)..........       36         3  DBX                DBM/DBO/DBP.
3,4-Dichloro-1-butene....................       36  ........  DCD                DCB.
Dichlorodifluoromethane..................       36  ........  DCF
1,1-Dichloroethane.......................       36         2  DCH
Dichloroethyl ether *....................       41         3  DYR                DEE.
1,6-Dichlorohexane.......................       36  ........  DHX
2,2-Dichloroisopropyl ether..............       41  ........  DCI
Dichloromethane..........................       36         2  DCM
2,4-Dichlorophenol.......................       21  ........  DCP
2,4-Dichlorophenoxyacetic acid/                 43  ........  DDE
 Diethanolamine salt solution.
2,4-Dichlorophenoxyacetic acid/                  0   1, 2, 3  DDA                DAD/DSX.
 Dimethylamine salt solution (70% or
 less) *.
2,4-Dichlorophenoxyacetic acid/                 43         2  DTI
 Triisopropanolamine salt solution.
1,1-Dichloropropane......................       36  ........  DPB                DPC/DPL/DPP/DPX.
1,2-Dichloropropane *....................       36         3  DPP                DPB/DPC/DPL/DPX.
1,3-Dichlorpropane.......................       36  ........  DPC                DPB/DPL/DPP/DPX.
Dichloropropene (all isomers)............       15  ........  DCW                DPF/DPU.
1,3-Dichloropropene......................       15  ........  .................  DCW/DPF.

[[Page 101]]

 
Dichloropropene/Dichloropropane mixtures.       15  ........  DMX                DCW/DPB/DPC/DPL/DPP/DPU/DPX.
2,2-Dichloropropionic acid...............        4  ........  DCN
Dicyclopentadiene, see 1,3-                     30  ........  DPT                CPD (DPV).
 Cyclopentadiene dimer (molten).
Dicyclopentadiene, Resin Grade, 81-89% *.       30         3  DPV                CPD/DPT.
Diethanolamine...........................        8  ........  DEA
Diethanolamine salt of 2,4-                     43  ........  DZZ                DDE.
 Dichlorophenoxyacetic acid solution, see
 2,4-Dichlorophenoxyacetic acid,
 Diethanolamine salt solution.
Diethylamine.............................        7  ........  DEN
Diethylaminoethanol......................        8  ........  DAE
2,6-Diethylaniline.......................        9  ........  DMN                DIY.
Diethylbenzene...........................       32  ........  DEB
Diethylene glycol........................       40         2  DEG
Diethylene glycol butyl ether, see Poly(2-      40  ........  DME                PAG.
 8) alkylene glycol monoalkyl(C1-C6)
 ether.
Diethylene glycol butyl ether acetate,          34  ........  DEM                PAF.
 see Poly(2-8)alkylene glycol
 monoalkyl(C1-C6) ether acetate.
Diethylene glycol dibutyl ether..........       40  ........  DIG
Diethylene glycol diethyl ether..........       40  ........  DGS
Diethylene glycol ethyl ether, see Poly(2-      40  ........  DGE                PAG.
 8)alkylene glycol monoalkyl (C1-C6)
 ether.
Diethylene glycol ethyl ether acetate,          34  ........  DGA                PAF.
 see Poly(2-8)alkylene glycol
 monoalkyl(C1-C6) ether acetates.
Diethylene glycol n-hexyl ether, see            40  ........  DHE                PAG.
 Poly(2-8)alkylene glycol monoalkyl(C1-
 C6) ether.
Diethylene glycol methyl ether, see             40  ........  DGM                PAG.
 Poly(2-8)alkylene glycol monoalkyl(C1-
 C6) ether.
Diethylene glycol methyl ether acetate,         34  ........  DGR                PAF.
 see Poly(2-8)alkylene glycol
 monoalkyl(C1-C6) ether acetate.
Diethylene glycol phenyl ether...........       40  ........  DGP
Diethylene glycol phthalate..............       34  ........  DGL
Diethylene glycol propyl ether, see             40  ........  DGO                PAG.
 Poly(2-8)alkylene glycol monoalkyl(C1-
 C6) ether.
Diethylenetriamine.......................        7         2  DET
Diethylenetriaminepentaacetic acid,             43  ........  DYS
 pentasodium salt solution.
Diethylethanolamine, see                         8  ........  .................  DAE.
 Diethylaminoethanol.
Diethyl ether............................        8  ........  EET
Diethyl hexanol, see Decyl alcohol (all         20  ........  .................  DAX.
 isomers).
Di-(2-ethylhexyl) adipate................       34  ........  DEH
Di-(2-ethylhexyl) phosphoric acid........        1  ........  DEP
Di-(2-ethylhexyl) phthalate, see Dialkyl        34  ........  DIE                DAH.
 (C7-C13) phthalate.
Di-(2-ethylhexyl) terephthalate..........       34  ........  DHH
Diethyl phthalate........................       34  ........  DPH
Diethyl sulfate..........................       34  ........  DSU
Diglycidyl ether of Bisphenol A..........       41  ........  BDE
Diglycidyl ether of Bisphenol F..........       41  ........  DGF
Diheptyl phthalate, see Dialkyl (C7-C13)        34  ........  DHP                DAH.
 phthalate.
Di-n-hexyl adipate.......................       34  ........  DHA
Dihexyl phthalate........................       34  ........  DHL
1,4-Dihydro-9,10-dihydroxy anthracene,           5  ........  DDH
 disodium salt solution.
Diisobutylamine..........................        7  ........  DBU
Diisobutyl carbinol, see Nonyl alcohol          20  ........  DBC                NNS.
 (all isomers).
Diisobutylene............................       30  ........  DBL
Diisobutyl ketone........................       18  ........  DIK
Diisobutyl phthalate.....................       34  ........  DIT                DPA.
Diisodecyl phthalate, see Dialkyl (C7-          34  ........  DID                DAH.
 C13) phthalates.
Diisononyl adipate.......................       34  ........  DNY
Diisononyl phthalate, see Dialkyl (C7-          34         2  DIN                DAH.
 C13) phthalates.
Diisooctyl phthalate, see Dialkyl (C7-          34  ........  DIO                DAH/(DIE/DOP).
 C13) phthalate.
Diisopropanolamine.......................        8  ........  DIP
Diisopropylamine.........................        7  ........  DIA                DNA.
Diisopropylbenzene (all isomers).........       32  ........  DIX
Diisopropylnaphthalene...................       32  ........  DII
N,N-Dimethylacetamide....................       10  ........  DAC                DLS.
N,N-Dimethylacetamide solution (40% or          10         3  DLS                DAL.
 less *).
Dimethyl adipate.........................       34  ........  DLA
Dimethylamine............................        7  ........  DMA                DMC/DMG/DMY.
Dimethylamine solution (45% or less *)...        7         3  DMG                DMA/DMC/DMY.
Dimethylamine solution (greater than 45%         7         3  DMY                DMA/DMC/DMG.
 but not greater than 55%) *.
Dimethylamine solution (greater than 55%         7         3  DMC                DMA/DMG/DMY.
 but not greater than 65%) *.
Dimethylamine salt of 4-Chloro-2-                9  ........  .................  CDM.
 methylphenoxyacetic acid solution, see 4-
 Chloro-2-methylphenoxyacetic acid,
 Dimethylamine salt solution.
Dimethylamine salt of 2,4-                       9  ........  DAD                DDA (DSX).
 Dichlorophenoxyacetic acid solution, see
 2,4-Dichlorophenoxyacetic acid,
 Dimethylamine salt solution (70% or
 less).

[[Page 102]]

 
2,6-Dimethylaniline......................        9  ........  DMM                DDL.
Dimethylbenzene, see Xylenes.............       32  ........  .................  XLX/XLM/XLO/XLP.
N,N-Dimethylcyclohexylamine..............        7  ........  DXN
Dimethyl disulfide *.....................        0   1, 2, 3  DSK
Dimethyldodecylamine, see N,N-                   7  ........  .................  DDY.
 Dimethyldodecylamine.
N,N-Dimethyldodecylamine.................        7  ........  DDY
Dimethylethanolamine.....................        8  ........  DMB
Dimethyl ether...........................       41  ........  DIM
Dimethylformamide........................       10  ........  DMF
Dimethyl glutarate.......................       34  ........  DGT
Dimethyl hydrogen phosphite..............       34         2  DPI
Dimethyl octanoic acid...................        4  ........  DMO
Dimethyl phthalate.......................       34  ........  DTL
Dimethylpolysiloxane.....................       34  ........  DMP
2,2-Dimethylpropane-1,3-diol (molten or         20         3  DDI
 solution *).
Dimethyl succinate.......................       34  ........  DSE
Dinitrotoluene (molten *)................       42         3  DNM                DNL/DNU/DTT.
Dinonyl phthalate, see Dialkyl (C7-C13)         34  ........  DIF                DAH.
 phthalates.
Dioctyl phthalate, see Dialkyl (C7-C13)         34  ........  DOP                DAH (DIE/DIO).
 phthalates.
1,4-Dioxane..............................       41  ........  DOX
Dipentene................................       30  ........  DPN
Diphenyl.................................       32  ........  DIL
Diphenylamine (molten)...................        9  ........  DAG                DAM.
Diphenylamine, reaction product with             9  ........  DAK
 2,2,4-trimethylpentene.
Diphenylamines, alkylated................        9  ........  DAJ
Diphenyl/Diphenyl ether mixtures.........       33  ........  DDO
Diphenyl ether...........................       41  ........  DPE
Diphenyl ether/Biphenyl ether mixture,          41  ........  .................  DDO.
 see Diphenyl/Diphenyl ether mixture.
Diphenyl ether/Diphenyl phenyl ether            41  ........  DOB
 mixture.
Diphenylmethane diisocyanate.............       12  ........  DPM
Diphenylol propane-Epichlorohydrin resins        0         1  DPR
Diphenyl oxide, see Diphenyl ether.......       40  ........  .................  DPE.
Di-n-propylamine.........................        7  ........  DNA                DIA.
Dipropylene glycol.......................       40  ........  DPG
Dipropylene glycol butyl ether, see             40  ........  DBG                PAG.
 Poly(2-8)alkylene glycol monoalkyl(C1-
 C6) ether.
Dipropylene glycol dibenzoate............       34  ........  DGY
Dipropylene glycol methyl ether, see Poly       40  ........  DPY                PAG.
 (2-8)alkylene glycol monoalkyl(C1-C6)
 ether.
Distillates, flashed feed stocks.........       33  ........  DFF
Distillates, straight run................       33  ........  DSR
Di-tert-butyl phenol.....................       21  ........  DBF                DBT/DBV/DBW.
2,4-Di-tert-butyl phenol.................       21  ........  DBV                DBF/DBT/DBW.
2,6-Di-tert-butyl phenol.................       21  ........  DBW                DBF/DBT/DBV.
Dithiocarbamate ester (C7-C35)...........       34  ........  DHO
Ditridecyl adipate.......................       34  ........  DTY
Ditridecyl phthalate, see Dialkyl (C7-          34  ........  DTP                DAH.
 C13) phthalate.
Diundecyl phthalate, see Dialkyl (C7-C13)       34  ........  DUP                DAH.
 phthalates.
Dodecane (all isomers), see Alkanes (C10        31  ........  DOF                ALV (ALJ/DOC).
 + ) (all isomers).
tert-Dodecanethiol.......................        0      1, 2  DDL                LRM.
Dodecene (all isomers *).................       30         3  DOZ                DDC/DOD.
Dodecanol (all isomers), see Dodecyl            20         2  DDN                LAL.
 alcohol (all isomers).
2-Dodecenylsuccinic acid, dipotassium           34  ........  DSP
 salt solution.
Dodecyl alcohol (all isomers)............       20  ........  DDN                ASK/ASY/LAL.
Dodecylamine/Tetradecylamine mixture.....        7  ........  DTA
Dodecylbenzene, see Alkyl (C9 + )               32  ........  DDB                AKB.
 benzenes.
Dodecyldimethylamine/                            7  ........  DOT
 Tetradecyldimethylamine mixture.
Dodecyl diphenyl ether disulfonate              43  ........  DTA
 solution.
Dodecyl hydroxypropyl sulfide............        0         1  DOH
Dodecyl methacrylate.....................       14  ........  DDM
Dodecyl/Octadecyl methacrylate mixture...       14  ........  DOM                DDM.
Dodecyl/Pentadecyl methacrylate mixture..       14  ........  DDP
Dodecyl phenol...........................       21  ........  DOL
Dodecyl xylene...........................       32  ........  DXY
Drilling brines (containing Calcium,            43  ........  DRL                DRB/DRS.
 Potassium or Sodium salts).
Drilling brines (containing Zinc salts)..       43  ........  DZB                DRB.
Drilling brines, including: Calcium             43         3  .................  DRS/DRL.
 bromide solution, Calcium chloride
 solution and Sodium chloride solution *.
Drilling mud (low toxicity) (if flammable       33  ........  DRO                DRM/DRN/DRP.
 or combustible).
Drilling mud (low toxicity) (if non-            43  ........  DRP                DRM/DRN/DRO.
 flammable or non-combustible).
Epichlorohydrin..........................       17  ........  EPC
Epoxy resin..............................       18  ........  EPN

[[Page 103]]

 
ETBE, see Ethyl tert-butyl ether.........       40  ........  .................  EBE.
Ethane...................................       31  ........  ETH
Ethanolamine.............................        8  ........  MEA
2-Ethoxyethanol, see Ethylene glycol            40  ........  EEO                EGC (EGE).
 monoalkyl ethers.
2-Ethoxyethyl acetate....................       34         2  EEA                EGA.
Ethoxylated alkyloxy alkyl amine.........        8  ........  ELM
Ethoxylated alcohols, C11-C15, see the          40  ........  .................  AEA/AEB/AED/AET/APV/APW/APX.
 alcohol poylethoxylates.
Ethoxylated long-chain (C16 + )                  8  ........  ELA
 alkyloxyalkylamine.
Ethoxylated tallow alkyl amine...........        7  ........  TAY                TAG/TAR.
Ethoxylated tallow amine (>95%) *........        7         3  TAR                TAG/TAY.
Ethoxylated tallow alkyl amine, glycol           7  ........  TAG                TAR/TAY.
 mixture.
Ethoxy triglycol, see Poly (2-8) alkylene       40  ........  ETG                PAG (ETR/TGE).
 glycol monoalkyl (C1-C6) ether.
Ethoxy triglycol (crude).................       40  ........  ETR
Ethyl acetate............................       34         2  ETA
Ethyl acetoacetate.......................       34  ........  EAA
Ethyl acrylate...........................       14         2  EAC
Ethyl alcohol............................       20         2  EAL
Ethylamine...............................        7         2  EAM                EAN/EAO.
Ethylamine solution (72% or less *)......        7         3  EAN                EAM/EAO.
Ethyl amyl ketone........................       18  ........  EAK                ELK.
Ethylbenzene.............................       32  ........  ETB
Ethyl butanol............................       20  ........  EBT
N-Ethyl-butylamine.......................        7  ........  EBA
Ethyl tert-butyl ether...................       41         2  EBE
Ethyl butyrate...........................       34  ........  EBR
Ethyl chloride...........................       36  ........  ECL
Ethyl cyclohexane........................       31  ........  ECY
N-Ethylcyclohexylamine...................        7  ........  ECC
2-Ethyl-2-(2,4-dichlorophenoxy) acetate..       34  ........  EDY
2-Ethyl-2-(2,4-dichlorophenoxy)                 34  ........  EDP
 propionate.
S-Ethyl dipropylthiocarbamate *..........       34         3  ECB
Ethylene.................................       30  ........  ETL
Ethylene carbonate.......................       34  ........  ECR
Ethylene chlorohydrin....................       20  ........  ECH
Ethylene cyanohydrin.....................       20         2  ETC
Ethylenediamine..........................        7         2  EDA                EMX.
Ethylenediaminetetraacetic acid/                43  ........  EDS
 tetrasodium salt solution.
Ethylene dibromide.......................       36  ........  EDB
Ethylene dichloride......................       36         2  EDC
Ethylene glycol..........................       20         2  EGL                EAG.
Ethylene glycol acetate..................       34  ........  EGO
Ethylene glycol butyl ether, see Ethylene       40  ........  EGM                EGC.
 glycol monoalkyl ethers.
Ethylene glycol tert-butyl ether, see           40  ........  EGG                EGC.
 Ethylene glycol monoalkyl ethers.
Ethylene glycol butyl ether acetate......       34  ........  EMA
Ethylene glycol diacetate................       34  ........  EGY
Ethylene glycol dibutyl ether............       40  ........  EGB
Ethylene glycol ethyl ether, see Ethyl          40  ........  EGE                EGC/EEO.
 glycol monoalkyl ethers.
Ethylene glycol ethyl ether acetate, see        34         2  EGA                EEA.
 2-Ethoxyethyl acetate.
Ethylene glycol hexyl ether, see Ethylene       40  ........  EGH                EGC.
 glycol monoalkyl ethers.
Ethylene glycol isobutyl ether, see             40  ........  .................  EGC (EGG/EGM).
 Ethylene glycol monoalkyl ethers.
Ethylene glycol isopropyl ether, see            40  ........  EGI                EGN/EGP.
 Ethylene glycol monoalkyl ethers.
Ethylene glycol methyl butyl ether, see         40  ........  EMB                EGC.
 Ethylene glycol monoalkyl ethers.
Ethylene glycol methyl ether, see               40  ........  EME                EGC.
 Ethylene glycol monoalkyl ethers.
Ethylene glycol methyl ether acetate.....       34  ........  EGT
Ethylene glycol monoalkyl ethers.........       40         2  EGC
    Including:
        Ethylene glycol butyl ether......
        Ethylene glycol isobutyl ether...
        Ethylene glycol methyl butyl
         ether.
        Ethylene glycol tert-butyl ether.
        Ethylene glycol ethyl ether......
        Ethylene glycol hexyl ether......
        Ethylene glycol methyl ether.....
        Ethylene glycol propyl ether.....
        Ethylene glycol iso-propyl ether.
Ethylene glycol phenyl ether.............       40  ........  EPE
Ethylene glycol phenyl ether/Diethylene         40  ........  EDX
 glycol phenyl ether mixture.
Ethylene glycol propyl ether, see               40  ........  EGP                EGC/EGI/EGN.
 Ethylene glycol monoalkyl ethers.
Ethylene glycol iso-propyl ether, see           40  ........  EGI                EGC/EGN/EGP.
 Ethylene glycol monoalkyl ethers.
Ethylene glycol n-propyl ether, see             40  ........  EGN                EGC (EGI/EGP).
 Ethylene glycol monoalkyl ethers.
Ethylene oxide...........................        0         1  EOX
Ethylene oxide/Propylene oxide mixture...       16  ........  EPF                EPM.

[[Page 104]]

 
Ethylene oxide/Propylene oxide mixture          16         3  EPM                EPF.
 with an Ethylene oxide content not more
 than 30% by mass *.
Ethylene-Propylene copolymer (in liquid         31  ........  EPY
 mixtures).
Ethylene-Vinyl acetate copolymer                43  ........  ECV
 (emulsion).
Ethyl ether, see Diethyl ether...........       41  ........  .................  EET.
Ethyl-3-ethoxypropionate.................       34  ........  EEP
2-Ethylhexaldehyde, see Octyl aldehydes..       19  ........  EHA                OAL (OLX).
2-Ethylhexanoic acid, see Octanoic acid..        4  ........  EHO                OAY (OAA).
2-Ethylhexanol, see Octanol..............       20  ........  EHX                OCA (OTA).
2-Ethylhexyl acrylate....................       14  ........  EAI
2-Ethylhexylamine........................        7  ........  EHM
Ethyl hexyl phthalate....................       34  ........  EHE
Ethyl hexyl tallate......................       34  ........  EHT
2-Ethyl-2-(hydroxymethyl) propane-1,3-          34  ........  EHD
 diol, (C8-C10) ester.
Ethyl lactate............................       34  ........  ELT
Ethylidene norbornene....................       30         2  ENB
Ethyl methacrylate.......................       14  ........  ETM
N-Ethylmethylallylamine..................        7  ........  EML
Ethyl propionate.........................       34  ........  EPR
2-Ethyl-3-propylacrolein.................       19         2  EPA
Ethyl toluene............................       32  ........  ETE
Fatty acids (saturated, C13 + )..........       34  ........  FAB                FAD.
Fatty acids (saturated, C14 + ), see            34  ........  FAD                FAB.
 Fatty acids (saturated, C13 + ).
Fatty acid methyl esters *...............        4         3  FME
Fatty acids, (C8-C10) *..................        4         3  FDS
Fatty acids, (C12 + ) *..................        4         3  FDT                FAB/FAD/FAI/FDI.
Fatty acids, (C16 + ) *..................        4         3  FDI
Fatty acids, essentially linear (C6-C18)         4      2, 3  FAE
 2-ethylhexyl ester *.
Ferric chloride solution.................        1  ........  FCS                FCL.
Ferric                                          43         2  FHX                STA.
 hydroxyethylethylenediaminetriacetic
 acid, trisodium salt solution.
Ferric nitrate/Nitric acid solution......        3         2  FNN
Fish oil, see Oil, edible: Fish..........       34         2  .................  OFS (AFN).
Fish solubles (water based fish meal            43  ........  FSO
 extracts).
Fluorosilicic acid (20-30%) in water             1         3  FSK                FSJ/FSL/HFS.
 solution *.
Fluorosilicic acid (30% or less).........        1  ........  FSJ                FSK/FSL/HFS.
Formaldehyde (50% or more), Methanol            19         2  MTM
 mixtures.
Formaldehyde solutions (37%-50%).........       19         2  FMS                FMG/FMR.
Formaldehyde solutions (45% or less *)...       19      2, 3  FMR                FMG/FMS.
Formamide................................       10  ........  FAM
Formic acid..............................        4         2  FMA                FMB.
Formic acid (85% or less)................       19         2  FMB                FMA.
Formic acid (over 85%) *.................        4      2, 3  FMD
Formic acid mixture (containing up to 18%        4      2, 3  FMC                FMA/FMB.
 Propionic acid and up to 25% Sodium
 formate) *.
Fructose solution........................       43  ........  FTS                FRT.
Fumaric adduct of Rosin, water dispersion       43  ........  FAR
Furfural.................................       19  ........  FFA
Furfuryl alcohol.........................       20         2  FAL
Gas oil, cracked, see Oil, misc: Gas,           33  ........  .................  GOC.
 cracked.
Gasoline blending stock, alkylates.......       33  ........  GAK
Gasoline blending stock, reformates......       33  ........  GRF
Gasolines:
    Automotive (containing not over 4.23        33  ........  GAT
     grams lead per gal.).
    Aviation (containing not over 4.86          33  ........  GAV                AVA.
     grams lead per gal.).
    Casinghead (natural).................       33  ........  GCS
        Polymer..........................       33  ........  GPL
        Straight run.....................       33  ........  GSR
Gasolines: Pyrolysis (containing                33  ........  GPY                PYG.
 Benzene), see Pyrolysis gasoline
 (containing Benzene).
Glucitol/Glycerol blend propoxylated            40         3  GGA
 (containing less than 10% amines) *.
Glucose solution.........................       43  ........  GLS                DTS.
Glutaraldehyde solutions (50% or less)...       19  ........  GTA
Glycerine................................       20         2  GCR
Glycerine (83%)/Dioxanedimethanol (17%)         20  ........  GDN                GDM.
 mixture.
Glycerol, see Glycerine..................       20  ........  .................  GCR.
Glycerol ethoxylated.....................       40  ........  GXA
Glycerol monooleate......................       20  ........  GMO
Glycerol polyalkoxylate..................       40  ........  GPA
Glycerol propoxylated *..................       40         3  GXP
Glycerol, propoxylated and ethoxylated *.       40         3  GXE
Glycerol/Sucrose blend propoxylated and         40         3  GSB
 ethoxylated *.
Glyceryl triacetate......................       34  ........  GCT
Glycidyl ester of tertiary carboxylic           34  ........  GLT                GLU.
 acid, see Glycidyl ester of C10 trialkyl
 acetic acid.

[[Page 105]]

 
Gylcidyl ester of tridecyl acetic acid,         34  ........  GLT                GLU.
 see Glycidyl ester of C10 trialkyl
 acetic acid.
Glycidyl ester of C10 trialkyl acetic           34  ........  GLU                GLT.
 acid.
Glycidyl ester of Versatic acid, see            34  ........  GLT                GLU.
 Gylcidyl ester of C10 trialkyl acetic
 acid.
Glycine, sodium salt solution............        7  ........  GSS
Glycol mixture, crude....................       20  ........  GMC
Glycol diacetate, see Ethylene glycol           34  ........  .................  EGY.
 diacetate.
Glycolic acid solution (70% or less *)...        4         3  GLC
Glycol triacetate, see Glyceryl                 34  ........  .................  GCT.
 triacetate.
Glyoxal solution (40% or less *).........       19         3  GOS
Glyoxylic acid solution (50% or less *)..        4         3  GAC
Glyphosate solution (not containing              7  ........  GIO                RUP.
 surfactant).
Groundnut oil, see Oil, edible: Groundnut       34  ........  .................  OGN (VEO).
Heptadecane (all isomers), see Alkanes          31  ........  .................  ALV (ALJ).
 (C10 + ) (all isomers).
Heptane (all isomers), see Alkanes (C6-         31  ........  HMX                ALK(HPI/HPT).
 C9).
n-Heptanoic acid.........................        4  ........  HEN                HEP.
Heptanol (all isomers *).................       20         3  HTX                HTN.
Heptene (all isomers *)..................       30         3  HPX                THE.
Heptyl acetate...........................       34  ........  HPE
Heptylbenzenes, see Alkyl (C3-C4)               32  ........  .................  AKD.
 benzenes.
Herbicide (C15-H22-NO2-Cl), see                 34  ........  .................  MCO.
 Metolachlor.
Hexadecanol, see Alcohols (C13 + ).......       20  ........  .................  ALY (ASY/AYL).
1-Hexadecylnaphthalene/1,4-                     32  ........  HNH                HNI.
 bis(Hexadecyl)naphthalene mixture.
1-n-Hexadecylnaphthalene (90%)/1,4-di-n-        32  ........  HNI                HNH.
 (Hexadecyl)naphthalene (10%).
Hexaethylene glycol, see Polyethylene           20  ........  HMG                PEG.
 glycol.
Hexamethylenediamine adipate solution....       43  ........  HAN                HAM.
Hexamethylenediamine adipate (50% in            43  ........  HAM                HAN.
 water).
Hexamethylenediamine (molten *)..........        7         3  HME                HMD/HMC.
Hexamethylenediamine solution............        7  ........  HMC                HMD/HME.
Hexamethylene diisocyanate...............       12  ........  HMS                HDI.
Hexamethylene glycol.....................       20  ........  HMG                HXG.
Hexamethyleneimine.......................        7  ........  HMI
Hexamethylenetetramine solutions.........        7  ........  HTS                HMT.
1,6-Hexanediol, distillation overheads *.        4      2, 3  HDO
Hexanoic acid............................        4  ........  HXO
Hexanol..................................       20  ........  HXM                HEW/HEZ/HXN.
Hexene (all isomers *)...................       30         3  HEX                HXE/HXT/HXU/HXV/MPN/MTN.
Hexyl acetate............................       34  ........  HAE
Hexylbenzenes, see Alkyl (C3-C4) benzenes       32  ........  .................  AKD.
Hexylene glycol, see Hexamethylene glycol       20  ........  HXG                HMG.
Hog grease, see Lard.....................       34  ........  .................  LRD.
Hydrochloric acid........................        1  ........  HCL
Hydrofluorosilicic acid (25% or less),           1  ........  .................  FSJ(FSK/FSL/HFS).
 see Fluorosilicic acid (30% or less).
Hydrogenated starch hydrolysate *........        0      1, 3  HSH
bis(Hydrogenated tallow alkyl)methyl             7  ........  HTA
 amines.
Hydrogen peroxide solutions (over 8% but         0       1,3  HPN                HPO/HPS.
 not over 60% by mass) *.
Hydrogen peroxide solutions (over 60% but        0      1, 3  HPS                HPN/HPO.
 not over 70% by mass *).
alpha-Hydro-omega-                              40  ........  HTO                PYS/PYT.
 hydroxytetradeca(oxytetramethylene).
2-Hydroxyethyl acrylate..................       14         2  HAI
N-(Hydroxyethyl)ethylenediamine triacetic       43  ........  HET
 acid, trisodium salt solution.
2-Hydroxy-4-(methylthio)butanoic acid....        4  ........  HBA
Hydroxy terminated polybutadiene, see           31  ........  .................  PHT.
 Polybutadiene, hydroxy terminated.
Illipe oil, see Oil, edible: Illipe......       34  ........  .................  ILO (VEO).
Isoamyl alcohol *........................       20         3  IAA                AAI/AAL/AAN/APM/ASE.
Isobutyl alcohol *.......................       20      2, 3  IAL                BAN/BAS/BAT/BAY.
Isobutyl formate *.......................       34         3  BFI                BFN/BFO.
Isobutyl methacrylate *..................       14         3  BMI                BMH/BMN.
Isononylaldehyde (crude).................       19  ........  INC
Isophorone...............................       18         2  IPH
Isophoronediamine........................        7  ........  IPI
Isophorone diisocyanate..................       12  ........  IPD
Isoprene (all isomers)...................       30  ........  IPR
Isoprene (part refined)..................       30  ........  IPS                IPR/ISC.
Isoprene concentrate (Shell).............       30  ........  ISC
Isopropanolamine *.......................        8         3  MPA                IPF/PAX/PLA.
Isopropanolamine solution *..............        8         3  PAI                MPA/PAY/PLA/PRG.
Isopropyl acetate *......................       34         3  IAC                PAT.
Isopropyl alcohol *......................       20      2, 3  IPA                IPB/PAL.
Isopropylamine *.........................        7         3  IPP                IPO/IPQ/PRA.
Isopropylamine (70% or less) solution *..        7         3  IPQ                IPO/IPP/PRA.

[[Page 106]]

 
Isopropylbenzenes, see Alkyl (C3-C4)            32  ........  .................  AKC(CUM/PBY/PBZ).
 benzenes.
Isopropylcyclohexane *...................       31         3  IPX
Isopropyl ether *........................       41         3  IPE                PRL/PRN.
Jatropha oil, see Oil, misc: Jatropha....       34  ........  .................  JTO.
Jet fuels:
    JP-4.................................       33  ........  JPF
    JP-5.................................       33  ........  JPV
    JP-8.................................       33  ........  JPE
Kaolin clay solution.....................       43  ........  KLC                KLS.
Kaolin slurry............................       43  ........  KLS                KLC.
Kerosene.................................       33  ........  KRS
Kraft black liquor.......................        5  ........  KBL                KPL.
Kraft pulping liquors (free alkali               5  ........  KPL                KBL.
 content 3% or more) (Black, Green, or
 White).
Lactic acid..............................        0         1  LTA
Lactonitrile solution (80% or less *)....       37         3  LNI
Lard.....................................       34  ........  LRD                OLD.
Latex, ammonia (1% or less *)-inhibited..       30         3  LTX
Latex: Carboxylated Styrene-Butadiene           43         3  LCC                LCB/LSB.
 copolymer; Styrene-Butadiene rubber *.
Latex, liquid synthetic..................       43  ........  LLS                LCB/LCC/LSB.
Lauric acid..............................       34  ........  LRA
Lauric acid methyl ester/Myristic acid          34  ........  LMM
 methyl ester mixture.
Lauryl polyglucose, see Alkyl(C12-C14)          43  ........  .................  AGM/LAP.
 polyglucoside solution (55% or less).
Lauryl polyglucose (50% or less), see           43  ........  LAP                AMG.
 Alkyl (C12-C14) polyglucoside solution
 (55% or less).
Lecithin.................................       34  ........  LEC
Lignin liquor............................       43  ........  LNL                ALG/CLL/LGA/LGM/LSL/SHC/SHP/SHQ/
                                                                                  SLP.
Ligninsulfonic acid, magnesium salt             43         3  LGM                LGA/LNL/LSL.
 solution *.
Ligninsulfonic acid, sodium salt                43  ........  LGA                LNL or SLG.
 solution, see Lignin liquor or Sodium
 lignosulfonate solution.
d-Limonene, see Dipentene................       30  ........  .................  DPN.
Linear alkyl (C12-C16) propoxyamine              8  ........  LPE
 ethoxylate.
Linseed oil, see Oil, misc: Linseed......       34  ........  .................  OLS.
Liquefied Natural Gas, see Methane.......       34  ........  LNG                MTH.
Liquid chemical wastes *.................        0      1, 3  LCW
Long-chain alkaryl polyether (C11-C20)...       41  ........  LCP
Long-chain alkaryl sulfonic acid (C16-           0         1  LCS
 C60).
Long-chain alkyl amine...................        7  ........  LAA
Long-chain alkylphenate/Phenol sulfide          21  ........  LPS
 mixture.
Long-chain alkyl (C13 + ) salicylic acid.        4  ........  LAS
L-Lysine solution (60% or less *)........       43         3  LYS
Magnesium chloride solution..............        0      1, 2  MGL
Magnesium hydroxide slurry...............        5  ........  MHS
Magnesium long-chain alkaryl sulfonate          34  ........  MAS                MSE.
 (C11-C50).
Magnesium long-chain alkyl phenate              34  ........  MPS
 sulfide (C8-C20).
Magnesium long-chain alkyl salicylate           34  ........  MLS
 (C11 + ).
Magnesium nitrate solution (66.7%).......       43  ........  MGP                MGN/MGO.
Magnesium nonyl phenol sulfide, see             34  ........  .................  MPS.
 Magnesium long-chain alkyl phenate
 sulfide (C8-C20).
Magnesium sulfonate, see Magnesium long-        34  ........  MSE                MAS.
 chain alkaryl sulfonate (C11-C50).
Maleic anhydride.........................       11  ........  MLA
Maltitol solution *......................        0      1, 3  MTI
Mango kernel oil, see Oil, edible: Mango        34  ........  .................  MKO (VEO).
 kernel.
2-Mercaptobenzothiazol (in liquid                5  ........  BTM                SMD.
 mixture).
Mercaptobenzothiazol, sodium salt                5  ........  SMB                MBT.
 solution.
Mesityl oxide............................       18         2  MSO
Metam sodium solution....................        7  ........  MSS                SMD.
Methacrylic acid.........................        4  ........  MAD
Methacrylic acid--Alkoxypoly(alkylene           20         3  MAQ
 oxide) methacrylate copolymer, sodium
 salt aqueous solution (45% or less) *.
Methacrylic resin in ethylene dichloride.       14  ........  MRD
Methacrylonitrile........................       15         2  MET
Methane..................................       31  ........  MTH                LNG.
3-Methoxy-1-butanol......................       20  ........  MTX
3-Methoxybutyl acetate...................       34  ........  MOA
N-(2-Methoxy-1-methyl ethyl)-2-ethyl-6-         34  ........  .................  MCO.
 methyl chloroacetanilide, see
 Metolachlor.
1-Methoxy-2-propyl acetate...............       34  ........  MXP

[[Page 107]]

 
Methoxy triglycol, see Poly (2-8)               40  ........  MTG                PAG (TGY).
 alkylene glycol monoalkyl (C1-C6) ether.
Methyl acetate...........................       34  ........  MTT
Methyl acetoacetate......................       34  ........  MAE
Methyl acetylene/Propadiene mixture......       30  ........  MAP
Methyl acrylate..........................       14  ........  MAM
Methyl alcohol...........................       20         2  MAL
Methylamine solutions (42% or less *)....        7         3  MSZ
Methylamyl acetate.......................       34  ........  MAC
Methylamyl alcohol.......................       20  ........  MAA                MIC.
Methyl amyl ketone.......................       18  ........  MAK
N-Methylaniline *........................        9         3  MAN
alpha-Methylbenzyl alcohol with                 20         3  MBA
 Acetophenone (15% or less) *.
Methyl bromide...........................       36  ........  MTB
Methyl butanol, see the amyl alcohols....       20  ........  .................  AAI/AAL/AAN/APM/ASE/IAA.
Methyl butenol...........................       20  ........  MBL
Methyl butenes, see Pentene..............       30  ........  .................  PTX (AMW/AMZ/PTE).
Methyl tert-butyl ether..................       41         2  MBE
Methyl butyl ketone......................       18         2  MBB                MBK/MIK.
Methyl 3-(3,5 di-tert-butyl-4-                  20  ........  MYP
 hydroxyphenyl) propionate crude melt.
Methylbutynol............................       20  ........  MBY                MHB.
Methyl butyrate..........................       34  ........  MBU
Methyl chloride..........................       36  ........  MTC
Methylcyclohexane........................       31  ........  MCY
Methylcyclohexanemethanol (crude)........       20  ........  MYH
Methylcyclopentadiene dimer..............       30  ........  MCK
Methylcyclopentadienyl manganese                 0      1, 3  MCT                MCW.
 tricarbonyl *.
Methylcyclopentadienyl manganese                 0         1  MCW                MCT.
 tricarbonyl (60-70%) in mineral oil.
Methyl diethanolamine....................        8  ........  MDE                MAB.
Methylene bridged isobtylenated phenols..       21  ........  MBP
Methylene chloride, see Dichloromethane..       21  ........  .................  DCM.
2-Methyl-6-ethyl aniline.................        9  ........  MEN
Methyl ethyl ketone......................       18         2  MEK
2-Methyl-5-ethyl pyridine................        9  ........  MEP
Methyl formate...........................       34  ........  MFM
N-Methylglucamine solution (70% or less         43         3  MGC
 *).
2-Methylglutaronitrile...................       37  ........  MLN                MGN.
2-Methylglutaronitrile with 2-                  37         3  MGE                MLN.
 Ethylsuccinonitrile (12% or less) *.
Methyl heptyl ketone.....................       18  ........  MHK
2-Methyl-2-hydroxy-3-butyne..............       20  ........  MHB                MBY.
Methyl isoamyl ketone, see Methyl amyl          18  ........  MAJ                MAK.
 ketone.
Methyl isobutyl carbinol, see Methyl amyl       20  ........  MIC                MAA.
 alcohol.
Methyl isobutyl ketone...................       18  ........  MIK                MBB/MBK.
Methyl methacrylate......................       14  ........  MMM
3-Methyl-3-methoxybutanol................       20  ........  MXB
3-Methyl-3-methoxybutyl acetate..........       34  ........  MMB
Methyl naphthalene (molten *)............       32         3  MNA
Methylolurea.............................       19  ........  MUT
2-Methyl pentane, see Hexane (all               31  ........  .................  HXS (ALK/HXA/IHA/NHX).
 isomers).
2-Methyl-1,5-pentanediamine..............        7  ........  MPM
2-Methyl-1-pentene, see Hexene (all             30  ........  MPN                HEX (HXE/HXT/HXU/HXV/MTN).
 isomers).
4-Methyl-1-pentene, see Hexene (all             30  ........  MTN                HEX (HXE/HXT/HXU/HXV/MPN).
 isomers).
Methyl tert-pentyl ether, see tert-Amyl         41  ........  .................  AYE.
 methyl ether.
2-Methyl-1,3-propanediol.................       20  ........  MDL
Methyl propyl ketone.....................       18  ........  MKE
Methylpyridine, see the Methylpyridines..        9  ........  MPQ                MPE/MPF/MPR.
2-Methylpyridine *.......................        9         3  MPR                MPE/MPF/MPQ.
3-Methylpyridine *.......................        9         3  MPE                MPF/MPQ/MPR.
4-Methylpyridine *.......................        9         3  MPF                MPE/MPQ/MPR.
N-Methyl-2-pyrrolidone...................        9         2  MPY
Methyl salicylate........................       34  ........  MES
alpha-Methylstyrene......................       30  ........  MSR
3-(Methylthio)propionaldehyde............       19  ........  MTP
Metolachlor..............................       34  ........  MCO
Microsillica slurry......................        4  ........  MOS
Milk.....................................       43  ........  MLK
Mineral spirits..........................       33  ........  MNS
Mixed C4 Cargoes.........................       30  ........  MIX
Molasses.................................       20  ........  MOL                MON.

[[Page 108]]

 
Molasses residue (from fermentation).....        0         1  MON                MOL.
Molybdenum polysulfide long-chain alkyl          0      1, 3  MOP
 dithiocarbamide complex *.
Monochlorodifluoromethane................       36  ........  MCF
Monoethanolamine, see Ethanolamine.......        8  ........  MEA
Monoisopropanolamine, see                        8  ........  .................  MPA (PLA/PLX).
 Isopropanolamine.
Monoethylamine, see Methylamine..........        7  ........  .................  EAM (EAN/EAO).
Morpholine...............................        7         2  MPL
Motor fuel anti-knock compound                   0         1  MFA
 (containing lead alkyls).
MTBE, see Methyl tert-butyl ether........       41  ........  .................  MBE.
Myrcene..................................       30  ........  MRE
Naphtha:
    Aromatic.............................       33  ........  NAR
    Coal tar solvent.....................       33  ........  NCT
    Heavy................................       33  ........  NAG
    Paraffinic...........................       33  ........  NPF
    Petroleum............................       33  ........  PTN
    Solvent..............................       33  ........  NSV
    Stoddard solvent.....................       33  ........  NSS
    Varnish Makers' and Painters'........       33  ........  NVM
Naphthalene (molten *)...................       32         3  NTM
Naphthalene sulfonic acid-Formaldehyde           0         1  NFS
 copolymer, sodium salt solution.
Naphthalene sulfonic acid, sodium salt          34  ........  NSB                NSA.
 solution.
Naphthenic acid..........................        4  ........  NTI
Naphthenic acid, sodium salt solution....       43  ........  NTS
Neodecanoic acid.........................        4  ........  NEA                DCO/NAT.
Nitrating acid (mixture of Sulfuric and          0         1  NIA
 Nitric acids).
Nitric acid (70% and over) *.............        3      2, 3  NCE                NAC/NCD.
Nitric acid (less than 70%)..............        3         2  NCD                NAC/NCE.
Nitrilotriacetic acid, trisodium salt           34         3  NCA
 solution *.
Nitrobenzene.............................       42  ........  NTB
o-Nitrochlorobenzene, see o-                    42  ........  .................  CNO (CNP).
 Chloronitrobenzene.
Nitroethane..............................       42  ........  NTE
Nitroethane(80%)/Nitropropane (20%) *....       42      2, 3  NNL                NNM/NNO/NPM/NPN/NPP/NTE.
Nitroethane/1-Nitropropane (each 15% or         42         2  NNO                NNL/NNM/NPM/NPN/NPP/NTE.
 more) mixture.
Nitrogen.................................        0         1  NXX
Nitrophenol (mixed isomers)..............       42  ........  NPX                NIP/NPH/NPX.
o-Nitrophenol (molten)...................        0      1, 2  NTP                NIP/NPH/NPX.
1-or 2-Nitropropane......................       42  ........  NPM                NPN/NPP.
Nitropropane (60%)/Nitroethane (40%)            42  ........  NNM                NNL/NNO/NPM/NPN/NPP/NTE.
 mixture.
o- or p-Nitrotoluenes *..................       42         3  NIT                NIE/NTR/NTT.
Nonane (all isomers), see Alkanes (C6-C9)       31  ........  NAX                ALK (NAN).
Nonanoic acid (all isomers)..............        4  ........  NNA                NAI/NIN.
Nonanoic/Tridecanoic acid mixture........        4  ........  NAT                NAI/NIN/NNA.
Non-edible industrial grade palm oil, see       34  ........  .................  OPB.
 Oil, misc: Palm, non-edible industrial
 grade.
Nonene (all isomers).....................       30  ........  NOO                NNE/NON/OAM/OFX/OFY.
Nonyl acetate............................       34  ........  NAE
Non-noxious Liquid Substance, (12) n.o.s.        0         1  NOL
 Cat OS.
Nonyl alcohol (all isomers)..............       20         2  NNS                ALR/DBC/NNI/NNN.
Nonylbenzene, see Alkyl(C9 + )benzenes...       32  ........  .................  AKB.
Nonyl methacrylate monomer...............       14  ........  NMA
Nonyl phenol.............................       21  ........  NNP
Nonylphenol (48-62%)/Phenol (42-48%)/           21  ........  NYL
 Dinonylphenol (1-10%) mixture.
Nonyl phenol poly(4 + )ethoxylate, see          40  ........  NPE                APN.
 Alkyl (C7-C11) phenol poly (4-12)
 ethoxylate.
Nonyl phenol sulfide (90% or less)              34  ........  .................  AKS (NPS).
 solution, see Alkyl phenol sulfide (C8-
 C40).
Noxious Liquid Substance, n.o.s. (NLS')..        0         1
1-Octadecanol, see Stearyl alcohol.......       20  ........  .................  SYL (ALY/ASY).
1-Octadecene, see the olefin or alpha-          30  ........  .................  OAM/OFZ.
 olefin entries.
Octadecenoamide solution.................       10  ........  ODD
Octadecenol, see Alcohols (C13 + ).......       20  ........  .................  ALY (AYL/ASY/OYL).
Octamethylcyclotetrasiloxane *...........       34         3  OSA
Octane (all isomers), see Alkanes (C6-C9)       31  ........  OAX                ALK (IOO/OAN).
Octanoic acid (all isomers)..............        4  ........  OAY                EHO/OAA.
Octanol (all isomers)....................       20         2  OCX                EHX/OPA/OTA.
Octene (all isomers).....................       30         2  OTX                OAM/OFC/OFY/OFW/OTE.
n-Octyl acetate..........................       34  ........  OAF                OAE.

[[Page 109]]

 
Octyl alcohol, see Octanol (all isomers).       20         2  .................  OCX (EHX/IOA/OTA).
Octyl aldehydes..........................       19  ........  OAL                EHA/IOC//OLX.
Octylbenzenes, see Alkyl (C3-C4) benzenes       32  ........  .................  AKD.
Octyl decyl adipate......................       34  ........  ODA
n-Octyl Mercaptan........................       34  ........  OME
Octyl nitrates (all isomers), see               34         2  ONE                AKN.
 Alkyl(C7-C9) nitrates.
Octyl phenol.............................       21  ........  OPH
Octyl phthalate, see Dialkyl (C7-C13)           34  ........  .................  DAH (DIE/DIO/DLK/DOP).
 phthalates.
Oil, edible:
    Beechnut.............................       34  ........  OBN                VEO.
    Castor...............................       34  ........  OCA                VEO.
    Cocoa butter.........................       34  ........  OCB                VEO.
    Coconut..............................       34         2  OCC                VEO.
    Cod liver............................       34  ........  OCL                AFN.
    Corn.................................       34  ........  OCO                VEO.
    Cotton seed..........................       34  ........  OCS                VEO.
    Fish.................................       34         2  OFS                AFN.
    Groundnut............................       34  ........  OGN                VEO.
    Hazelnut.............................       34  ........  OHN                VEO.
    Illipe...............................       34  ........  ILO                VEO.
    Lard.................................       34  ........  OLD                AFN.
    Maize, see Oil, edible: Corn.........       34  ........  .................  OCO (VEO).
    Mango kernel *.......................       34         3  MKO
    Nutmeg butter........................       34  ........  ONB                VEO.
    Olive................................       34  ........  OOL                VEO.
    Palm.................................       34         2  OPM                VEO.
    Palm kernel..........................       34  ........  OPO                VEO.
    Palm kernel olein....................       34  ........  PKO                VEO.
    Palm kernel stearin..................       34  ........  PKS                VEO.
    Palm mid fraction....................       34  ........  PFM                VEO.
    Palm olein...........................       34  ........  PON                VEO.
    Palm stearin.........................       34  ........  PMS                VEO.
    Peanut...............................       34  ........  OPN                VEO.
    Poppy................................       34  ........  OPY                VEO.
    Poppy seed...........................       34  ........  OPS                VEO.
    Raisin seed..........................       34  ........  ORA                VEO.
    Rapeseed (low erucic acid containing        34  ........  ORO                ORP/VEO.
     less than 4% free fatty acids).
    Rice bran............................       34  ........  ORB                VEO.
    Safflower............................       34  ........  OSF                VEO.
    Salad................................       34  ........  OSL                VEO.
    Sesame...............................       34  ........  OSS                VEO.
    Shea butter..........................       34  ........  OSH                VEO.
    Soya bean............................       34  ........  OSB                VEO.
    Sunflower, see Oil, edible Sunflower        34  ........  .................  OSN (VEO).
     seed.
    Sunflower seed.......................       34  ........  OSN                VEO.
    Tucum................................       34  ........  OTC                VEO.
    Vegetable............................       34  ........  OVG                VEO.
    Walnut...............................       34  ........  OWN                VEO.
Oil, fuel:
    No. 1................................       33  ........  OON
    No. 1-D..............................       33  ........  OOD
    No. 2................................       33  ........  OTW
    No. 2-D..............................       33  ........  OTD
    No. 4................................       33  ........  OFR
    No. 5................................       33  ........  OFV
    No. 6................................       33  ........  OSX
Oil, misc:
    Acid mixture from soybean, corn             34  ........  AOM
     (maize) and sunflower oil refining.
    Aliphatic............................       33  ........  OML
    Animal...............................       34  ........  OMA                AFN.
    Aromatic.............................       33  ........  OMR
    Camelina.............................       34  ........  OCI
    Cashew nut shell (untreated).........        4  ........  OCN
    Clarified............................       33  ........  OCF
    Coal.................................       33  ........  OMC
    Coconut fatty acid...................       34         2  CFA
    Coconut oil, fatty acid methyl ester.       34  ........  OCM
    Cotton seed oil, fatty acid..........       34  ........  CFY
    Crude................................       33  ........  OFA
    Diesel...............................       33  ........  ODS

[[Page 110]]

 
    Disulfide............................        0         1  ODI
    Gas, cracked.........................       33  ........  GOC
    Gas, high pour.......................       33  ........  OGP
    Gas, low pour........................       33  ........  OGL
    Gas, low sulfur......................       33  ........  OGS
    Heartcut distillate..................       33  ........  OHD
    Jatropha.............................       34  ........  JTO
    Lanolin..............................       34  ........  OLL                AFN.
    Linseed..............................       33  ........  OLS
    Lubricating..........................       33  ........  OLB
    Mineral..............................       33  ........  OMN
    Mineral seal.........................       33  ........  OMS
    Motor................................       33  ........  OMT
    Neatsfoot............................       33  ........  ONF                AFN.
    Oiticica.............................       34  ........  OOI
    Palm acid............................       34  ........  PLM
    Palm fatty acid distillate...........       34  ........  PFD
    Palm oil fatty acid methyl ester.....       34  ........  OPE
    Palm kernel acid.....................       34  ........  OPK
    Palm kernel fatty acid distillate....       34  ........  PNG
    Palm, non-edible industrial grade....       34  ........  OPB
    Penetrating..........................       33  ........  OPT
    Perilla..............................       34  ........  OPR
    Pilchard.............................       34  ........  OPL                AFN.
    Pine.................................       33  ........  OPI                PNL.
    Rape seed fatty acid methyl esters *.       34         3  ORP
    Residual.............................       33  ........  ORL
    Resin, distilled.....................       34  ........  ORR
    Road.................................       33  ........  ORD
    Rosin................................       33  ........  ORN
    Seal.................................       34  ........  OSE
    Soapstock............................       34  ........  OIS
    Soyabean (epoxidized)................       34  ........  OSC
    Soyabean fatty acid methyl ester.....       34  ........  .................  OST.
    Spindle..............................       33  ........  OSD
    Tall.................................       34  ........  OTL                OTI/OTJ.
    Tall, crude..........................       34         2  OTI                OTJ/OTL.
    Tall, distilled......................       34         2  OTJ                OTI/OTL.
    Tall, fatty acid.....................       34         2  OTT
    Tall fatty acid (resin acids less           34         2  OTK                OTT.
     than 20%).
    Tall pitch...........................       34  ........  OTP
    Transformer..........................       33  ........  OTF
    Tung.................................       34  ........  OTG
    Turbine..............................       33  ........  OTB
    Vacuum gas oil.......................       32  ........  OVC
Oleamide solution, see Octadecenoamide          10  ........  .................  ODD.
 solution.
Olefin-Alkyl ester copolymer (molecular         34  ........  OCP
 weight 2000 + ).
Olefin mixture (C7-C9) C8 rich,                 30         3  OFC                OFW/OFY/OFX.
 stabilized *.
Olefin mixtures (C5-C7) *................       30         3  OFX                OAM/OFC/OFW/OFX/OFZ.
Olefin mixtures (C5-C15) *...............       30         3  OFY                OAM/OFC/OFW/OFX/OFZ.
Olefins (C13 + , all isomers)............       30  ........  OFZ                OAM/OFW.
alpha-Olefins (C6-C18) mixtures..........       30  ........  OAM                OFC/OFW/OFX/OFY/OFZ.
Oleic acid...............................       34  ........  OLA
Oleum....................................        0      1, 2  OLM                SAC/SFX.
Oleyl alcohol, see Alcohols (C13 + ).....       20  ........  OYL                ALY (ASY).
Oleylamine...............................        7  ........  OLY
Olive oil, see Oil, edible: Olive........       34  ........  .................  OOL (VEO).
Orange juice (concentrated) *............        0      1, 3  OJC                OJN.
Orange juice (not concentrated) *........        0      1, 3  OJN                OJC.
Organomolybdenum amide...................       10  ........  OGA
ORIMULSION, see Asphalt emulsion.........       33  ........  .................  ASQ.
Oxyalkylated alkyl phenol formaldehyde...       33  ........  OPF
Oxygenated aliphatic hydrocarbon mixture         0      1, 3  OAH
 *.
Palm acid oil, see Oil, misc: Palm acid *       34         3  .................  PLM.
Palm fatty acid distillate, see Oil,            34         3  .................  PFD.
 misc: Palm fatty acid distillate *.
Palm kernel acid oil, see Oil, misc: Palm       34  ........  .................  PNO.
 kernel acid.
Palm kernel acid oil, methyl ester, see         34  ........  .................  PNF.
 Oil, misc: Palm kernel acid, methyl
 ester.
Palm kernel oil fatty acid distillate,          34  ........  .................  PNG.
 see Oil, misc: Palm kernel fatty acid
 distillate.

[[Page 111]]

 
Palm kernel oil, see Oil, edible: Palm          34  ........  .................  OPO (VEO).
 kernel.
Palm kernel olein, see Oil, edible: Palm        34         3  .................  PKO (VEO).
 kernel olein *.
Palm kernel stearin, see Oil, edible:           34         3  .................  PKS (VEO).
 Palm kernel stearin *.
Palm mid fraction, see Oil, edible: Palm        34         3  .................  PFM (VEO).
 mid fraction *.
Palm oil, see Oil, edible: Palm *........       34         3  .................  OPM (VEO).
Palm oil fatty acid methyl ester, see           34         3  .................  OPE.
 Oil, misc: Palm fatty acid methyl ester
 *.
Palm olein, see Oil, edible: Palm Olein *       34         3  .................  PON (VEO).
Palm stearin, see Oil, edible: Palm             34  ........  .................  PMS (VEO).
 stearin.
Parachlorobenzotrifluoride...............       32  ........  PBF
n-Paraffins (C10-C20), see n-Alkanes (C10       31  ........  PFN                ALJ.
 + ).
Paraffin wax, see Waxes: Paraffin *......       31         3  .................  WPF.
Paraldehyde..............................       19  ........  PDH
Paraldehyde-Ammonia reaction product.....        9  ........  PRB
Pentachloroethane........................       36  ........  PCE
Pentadecanol, see Alcohols (C13 + )......       20  ........  PDC                ALY.
1,3-Pentadiene...........................       30  ........  PDE                PDN.
1,3-Pentadiene (greater than 50%),              30         3  PMM
 Cyclopentene and isomers, mixtures *.
Pentaethylene glycol, see Polyethylene          20  ........  .................  PEG.
 glycols.
Pentaethylene glycol methyl ether, see          40  ........  .................  PAG.
 Poly(2-8)alkylene glycol monoalkyl (C1-
 C6) ether.
Pentaethylenehexamine....................        7  ........  PEN
Pentaethylenehexamine/                           7  ........  PEP
 Tetraethylenepentamine mixture.
Pentane (all isomers)....................       31  ........  PTY                IPT/PTA.
Pentanoic acid...........................        4  ........  POC.
n-Pentanoic acid (64%)/2-Methyl butryic          4  ........  POJ                POC.
 acid (36%) mixture.
Pentasodium salt of Diethylenetriamine          43  ........  .................  DYS.
 pentaacetic acid solution, see
 Diethylenetriamine pentaacetic acid,
 pentasodium salt solution.
Pentene (all isomers)....................       30  ........  PTX                PTE.
n-Pentyl propionate......................       34  ........  PPE
Perchloroethylene........................       36         2  PER                TTE.
Petrolatum...............................       33  ........  PTL
Phenol...................................       21         2  PHN                PNS.
Phenol solutions (2% or less)............       43  ........  PNS                PHN.
1-Phenyl-1-xylyl ethane..................       32  ........  PXE
Phosphate esters.........................       34  ........  PZE
Phosphate esters, alkyl (C12-C14) amine..        7  ........  PEA
Phosphoric acid..........................        1  ........  PAC
Phosphorus, yellow or white..............        0         1  PPW                PPB/PPR.
Phosphosulfurized bicycle terpene........        0         1  PBT
Phthalate based polyester polyol.........        0      1, 2  PBE
Phthalic anhydride (molten)..............       11  ........  PAN
alpha-Pinene.............................       30  ........  PIO                PIB/PIN.
beta-Pinene..............................       30  ........  PIP                PIN/PIO.
Pine oil, see Oil, misc: Pine............       33  ........  PNL                OPI.
Piperazine (crude).......................       34  ........  PZC                PPZ/PIZ.
Piperazine (70% or less).................       30  ........  PIZ                PPB/PPZ.
Piperylene concentrate...................       30  ........  PIC                PDE/PDN.
Polyacrylic acid solution (40% or less)..       43  ........  PYA
Polyalkenyl succinic anhydride amine.....        7  ........  PSN
Polyalkyl acrylate.......................       14  ........  PAY
Polyalky (C18-C22) acrylate in Xylene....       14  ........  PIX
Polyalkyl alkenamine succinimide,                7  ........  PSO
 molybdenum oxysulfide.
Polyalkylene glycols/Polyalkylene glycol        40  ........  PPX
 monoalkyl ether mixtures.
Polyalkylene glycol butyl ether, see            40  ........  PGB                PAG.
 Poly(2-8)alkylene glycol monoalkyl(C1-
 C6) ether.
Poly(2-8)alkylene glycol monoalkyl(C1-C6)       40  ........  PAG
 ether.
    Including:
        Diethylene glycol butyl ether....
        Diethylene glycol ethyl ether....
        Diethylene glycol n-hexyl ether..
        Diethylene glycol methyl ether...
        Diethylene glycol propyl ether...
        Dipropylene glycol butyl ether...
        Dipropylene glycol methyl ether..
        Polyalkylene glycol butyl ether..
        Polyethylene glycol monoalkyl
         ether.
        Polypropylene glycol methyl ether
        Triethylene glycol butyl ether...
        Triethylene glycol ethyl ether...
        Triethylene glycol methyl ether..
        Tripropylene glycol methyl ether.
Poly(2-8)alkylene glycol monoalkyl(C1-C6)       34  ........  PAF
 ether acetate.

[[Page 112]]

 
    Including:
        Diethylene glycol butyl ether
         acetate.
        Diethylene glycol ethyl ether
         acetate.
        Diethylene glycol methyl ether
         acetate.
Polyalkylene glycols/Polyalkylene glycol        40  ........  PPX
 monoalkyl ethers mixtures.
Polyalkylene oxide polyol................       20  ........  PAO
Polyalkyl (C10-C20) methacrylate.........       14  ........  PMT                PYY.
Polyalkyl methacrylate in mineral oil....       14  ........  PYY                PMT.
Polyalkyl(C10-C18) methacrylate/Ethylene-       14  ........  PEM
 Propylene copolymer mixture.
Polyalpha olefins........................       31  ........  PYO
Polyaluminum chloride solution...........        1  ........  PLS
Polybutadiene, hydroxyl terminated.......       20  ........  PHT
Polybutene...............................       33  ........  PLB
Polybutenyl succinimide..................       10  ........  PBS
Polycarboxylic ester (C9 + ), see               34  ........  .................  DTY.
 Ditridecyl adipate.
Poly(2 + )cyclic aromatics...............       32  ........  PCA
Polydimethylsiloxane, see                       34  ........  .................  DMP.
 Dimethylpolysiloxane.
Polyether, borated.......................       41  ........  PED
Polyether (molecular weight 1350 + ).....       41  ........  PYR
Polyether polyols........................       41  ........  PEO
Polyethylene glycol......................       40  ........  PEG
Polyethylene glycol dimethyl ether.......       40  ........  PEF
Poly (ethylene glycol) methylbutenyl            40  ........  PBN
 ether (MW >1000).
Polyethylene glycol monoalkyl ether, see        40  ........  PEE                PAG.
 Poly(2-8)alkylene glycol monoalkyl(C1-
 C6) ether.
Polyethylene polyamines..................        7         2  PEB                PEY.
Polyethylene polyamines (more than 50% C5-       7       2,3  PEY                PEB.
 C20 Paraffin oil) *.
Polyferric sulfate solution..............       34  ........  PSS
Polyglycerine/Sodium salts solution             20         2  PGT                PGS.
 (containing less than 3% Sodium
 hydroxide).
Polyglycerol.............................       20  ........  PGL
Poly(iminoethylene)-graft-N-                     7         3  PIG                PIM.
 poly(ethyleneoxy) solution (90% or less)
 *.
Polyisobutenamine in aliphatic (C10-C14)         7  ........  PIB                PIA.
 solvent.
Polyisobutenyl anhydride adduct..........       11  ........  PBA
Polyisobutenyl succinimide...............       10  ........  PIS
Poly(4 + )isobutylene....................       30  ........  PIL
Polyisobutylene succinic anhydride.......       11  ........  PYS
Polymerized esters.......................       34  ........  PYM
Polymethylene polyphenyl isocyanate......       12  ........  PPI
Polyolefin (molecular weight 300 + ).....       31  ........  PMW                PLF.
Polyolefin amide alkeneamine (C17 + )....       33  ........  POH                POD.
Polyolefin amide alkeneamine (C28 + ),          33  ........  POD                POH.
 see Polyolefin amide alkenamine (C17 + ).
Polyolefin amide alkeneamine borate (C28-       34  ........  PAB
 C250).
Polyolefin amide alkeneamine in mineral         33  ........  PLK
 oil.
Polyolefin amide alkeneamine/Molybdenum          7  ........  PMO
 oxysulfide mixture.
Polyolefin amide alkeneamine polyol......       20  ........  PAP
Polyolefinamine (C28-C250)...............       33  ........  POM
Polyolefinamine in alkyl(C2-C4) benzenes.       32  ........  POF                POR.
Polyolefinamine in aromatic solvent *....       32         3  POR                POF.
Polyolefin aminoester salts (molecular          34  ........  PAE
 weight 2000 + ).
Polyolefin anhydride.....................       11  ........  PAR
Polyolefin ester (C28-C250)..............       34  ........  POS
Polyolefin in mineral oil................       30  ........  PLF                PMW.
Polyolefin phenolic amine (C28-C250).....        9  ........  PPH
Polyolefin phosphorosulfide, barium             34  ........  PPS
 derivative (C28-C250).
Poly (oxyalkylene) alkenyl ether                41  ........  PXY
 (MW>1000).
Polyoxybutylene alcohol..................       41  ........  PXA
Poly(20)oxyethylene sorbitan monooleate..       34  ........  PSM
Polyoxypropylenediamine (MW 2000)........        7  ........  PYD
Poly(5 + )propylene......................       30  ........  PLQ                PLP.
Polypropylene glycol.....................       40  ........  PGC
Polypropylene glycol methyl ether, see          40  ........  PGM                PAG.
 Poly(2-8)alkylene glycol monoalkyl (C1-
 C6) ether.
Polysiloxane.............................       34  ........  PSX
Polysiloxane/White spirit, low (15-20%)         34  ........  PWS
 aromatic.
Potassium chloride solution..............       43  ........  PCU                PCD/PSD.
Potassium chloride solution (10% or more)       43  ........  PCS                PCD/PCU.
Potassium chloride solution (less than          43  ........  PSD                CLM/DRL/PCS/PCU.
 26%).
Potassium formate solutions..............       34  ........  PFR
Potassium hydroxide solution, see Caustic        5         2  .................  CPS/PTH.
 potash solution.
Potassium oleate.........................       34  ........  POE
Potassium polysulfide/Potassium                  0         1  PYP                PSF/PTF.
 thiosulfide solution (41% or less).

[[Page 113]]

 
Potassium salt of polyolefin acid........       34  ........  PSP
Potassium thiosulfate (50% or less)......       43  ........  PTF
Propane..................................       31  ........  PRP                LPG.
iso-Propanolamine, see Isopropanolamine..        8  ........  .................  MPA (PAX/PLA).
n-Propanolamine..........................        8  ........  PLA                MPA/PAX.
2-Propene-1-aminium, N,N-dimethyl-N-2-           0      1, 3  PLN
 propenyl-, chloride, homopolymer
 solution *.
beta-Propiolactone *.....................       18         3  PLT
Propionaldehyde..........................       19  ........  PAD
Propionic acid...........................        4  ........  PNA
Propionic anhydride......................       11  ........  PAH
Propionitrile............................       37  ........  PCN
n-Propoxypropanol, see Propylene glycol         40  ........  PXP                PGE.
 monoalkyl ether.
n-Propyl acetate.........................       34  ........  PAT                IAC.
n-Propyl alcohol.........................       20         2  PAL                IPA.
n-Propylamine............................        7  ........  PRA                IPO/IPP/IPQ.
iso-Propylamine solution, see                    7  ........  .................  IPQ (IPO/IPP/PRA).
 Isopropylamine (70% or less) solution.
Propylbenzenes, see Alkyl (C3-C4) benzens       32  ........  PBY                AKC (CUM/PBZ).
iso-Propyl cyclohexane, see                     34  ........  .................  IPX.
 Isopropylcyclohexane.
Propylene................................       30  ........  PPL
Propylene-Butylene copolymer.............       30  ........  PBP
Propylene carbonate......................       34  ........  PLC
Propylene dimer..........................       30  ........  PDR
Propylene glycol.........................       20         2  PPG
Propylene glycol n-butyl ether, see             40  ........  PGD                PGE.
 Propylene glycol monoalkyl ether.
Propylene glycol ethyl ether, see               40  ........  PGY                PGE.
 Propylene glycol monoalkyl ether.
Propylene glycol methyl ether, see              40  ........  PME                PGE.
 Propylene glycol monoalkyl ether.
Propylene glycol methyl ether acetate....       34  ........  PGN
Propylene glycol monoalkyl ether.........       40  ........  PGE
    Including:
        n-Propoxypropanol................
        Propylene glycol n-butyl ether...
        Propylene glycol ethyl ether.....
        Propylene glycol methyl ether....
        Propylene glycol propyl ether....
Propylene glycol phenyl ether............       40  ........  PGP
Propylene glycol propyl ether, see         .......  ........  .................  PGE.
 Propylene glycol monoalkyl ether.
Propylene oxide..........................       16  ........  POX
Propylene tetramer.......................       30  ........  PTT
Propylene trimer.........................       30  ........  PTR
Pseudocumene, see Trimethylbenzene (all         32  ........  .................  TMB/TMD/TME/TRE.
 isomers).
Pyridine.................................        9  ........  PRD
Pyridine bases, see Paraldehyde-Ammonia          9  ........  .................  PRB.
 reaction product.
Pyrolysis gasoline (containing Benzene) *       32         3  PYG                GPY.
Rapeseed oil, see Oil, edible: Rapeseed..       34  ........  .................  ORO (VEO).
Rapeseed oil (low erucic acid containing        34         3  .................  ORO (VEO).
 less than 4% free fatty acids), see Oil,
 edible: Rapeseed, (low erucic acid
 containing less than 4% free fatty
 acids) *.
Rapeseed oil fatty acid methyl esters,          34         3  .................  RSO.
 see Oil, misc: Rapeseed fatty acid
 methyl esters *.
Refrigerant gases........................        0         1  RFG
Resin oil, distilled, see Oil, misc:            33         3  .................  ORR (ORS).
 Resin, distilled *.
Rice bran oil, see Oil, misc: Rice bran..       34  ........  .................  ORB.
Rosin, see Oil, misc: Rosin..............       33  ........  .................  ORN.
ROUNDUP..................................        7  ........  RUP                GIO.
Rum, see Alcoholic beverages.............       20  ........  .................  ABV.
Safflower oil, see Oil, edible: Safflower       34  ........  .................  OSF (VEO)
Sewage sludge............................       43  ........  SWS
Shea butter, see Oil, edible: Shea butter       34         3  .................  OSH (VEO).
 *.
Silica slurry............................       43  ........  SLC
Siloxanes................................       34  ........  SLX
Sludge, treated..........................       43  ........  SWA
Sodium acetate, Glycol, Water mixture           34         2  SAW                SAO/SAP/SAQ/SAY.
 (not containing Sodium hydroxide).
Sodium acetate, Glycol, Water mixture            5  ........  SAQ                SAO/SAP/SAW/SAY.
 (containing Sodium hydroxide).
Sodium acetate, Glycol, Water mixture (1%        5         2  SAY                SAO/SAP/SAQ/SAY.
 or less Sodium hydroxide) (if non-
 flammable or non-combustible).
Sodium acetate solutions.................       34  ........  SAN
Sodium alkyl (C14-C17) sulfonates (60-65%       34  ........  SSA                AKA/AKE/SSU.
 solution).
Sodium aluminate solution................        5  ........  SAV                SAU.
Sodium aluminate solution (45% or less)..        5  ........  SAU                SAV.
Sodium aluminosilicate slurry............       34  ........  SLR
Sodium benzoate solution.................       34  ........  SBN                SBM.
Sodium bicarbonate solution (less than          34  ........  SBC
 10%).

[[Page 114]]

 
Sodium borohydride (15% or less)/Sodium          5  ........  SBX                CSS/SBH/SBI/SHD.
 hydroxide solution.
Sodium bromide solution (less than 50%) *       43         3  SBL                SBR.
Sodium carbonate solution................        5  ........  SCE
Sodium chlorate solution (50% or less)...        0      1, 2  SDD                SDC.
Sodium cyanide solution..................        5  ........  SCO                SCN/SCS.
Sodium dichromate solution (70% or less).        0      1, 2  SDL                SCR.
Sodium hydrogen sulfide (6% or less)/            0      1, 2  SSS                SCE/SHW.
 Sodium carbonate (3% or less) solution.
Sodium hydrogen sulfite solution (45% or        43  ........  SHY                SHX.
 less).
Sodium hydrosulfide/Ammonium sulfide             5         2  SSA                ASF/ASS.
 solution.
Sodium hydrosulfide solution (45% or             5         2  SHR
 less).
Sodium hydroxide solution, see Caustic           5         2  .................  CSS (SHD).
 soda solution.
Sodium hypochlorite solution (15% or             5  ........  SHP                SHC/SHQ.
 less).
Sodium hypochlorite solution (20% or             5  ........  SHQ                SHC/SHP.
 less).
Sodium lignosulfonate solution...........       43  ........  SLG                LNL.
Sodium long-chain alkyl salicylate (C13 +       34  ........  SLS
 ).
Sodium-2-mercaptobenzothiazol solution,          5  ........  .................  SMB.
 see Mercaptobenzothiazol, sodium salt
 solution.
Sodium methoxide (25% in methanol).......        5  ........  SMO
Sodium methylate 21-30% in methanol *....       20         3  SMT                SMS.
Sodium naphthalene sulfonate solution,          34  ........  SNS                NSA (NSB).
 see Naphthalene sulfonic acid (40% or
 less), sodium salt solution (40% or
 less).
Sodium naphthenate solution, see                34  ........  .................  NTS.
 Naphthenic acid, sodium salt solution.
Sodium nitrite solution..................        5  ........  SNI                SNT.
Sodium petroleum sulfonate...............       34  ........  SPS
Sodium polyacrylate solution.............       43  ........  SOO                SOP.
Sodium poly(4 + )acrylate solution.......       43         2  SOP                SOO.
Sodium salt of Ferric                           34  ........  STA                FHX.
 hydroxyethylethylenediaminetriacetic
 acid solution, see Ferric
 hydroxyethylethylenediaminetriacetic
 acid, trisodium salt solution.
Sodium silicate solution.................       43         2  SSN                SSC.
Sodium sulfate solution *................       34         3  SST                SSO.
Sodium sulfide/Hydrosulfide solution (H2S        0      1, 2  SSH                SDS/SHR/SSI/SSJ.
 15 ppm or less).
Sodium sulfide/Hydrosulfide solution (H2S        0      1, 2  SSI                SDS/SHR/SSH/SSJ.
 greater than 15 ppm but less than 200
 ppm).
Sodium sulfide/Hydrosulfide solution (H2S        0      1, 2  SSJ                SDS/SHR/SSH/SSI.
 greater than 200 ppm).
Sodium sulfide solution (15% or less)....       43  ........  SDR                SDS.
Sodium sulfite solution (25% or less)....       43  ........  SUP                SSF/SUS.
Sodium thiocyanate solution (56% or less)        0      1, 2  STS                SCY.
Sorbitol solution........................       20  ........  SBU                SBT.
Soyabean fatty acid methyl ester, see           34  ........  .................  OST.
 Oil, misc: Soyabean fatty acid methyl
 ester.
Soyabean oil, see Oil, edible: Soyabean..       34  ........  .................  OSB (VEO).
Stearic acid, see Fatty acids (saturated,       34  ........  SRA                FAD (FAB/FAE/FDI/FDT).
 C14 + ).
Stearyl alcohol..........................       20  ........  SYL                ALY/ASY.
Stoddard solvent, see Naphtha: Stoddard         33  ........  .................  NSS.
 solvent.
Styrene monomer..........................       30  ........  STY
Sulfohydrocarbon (C3-C88)................       33  ........  SFO
Sulfohydrocarbon, long-chain (C18 + )            7  ........  SFX
 alkylamine mixture.
Sulfolane................................       39  ........  SFL
Sulfonated polyacrylate solutions........       43         2  SPA
Sulfur (molten)..........................        0      1, 2  SXX
Sulfur dioxide...........................        0         1  SFD
Sulfuric acid............................        2         2  SFA                SAC.
Sulfuric acid, spent.....................        2         2  SAC                SFA.
Sulfurized fat (C14-C20).................       33  ........  SFT
Sulfurized polyolefinamide...............        7  ........  SPY
Sulfurized polyolefinamide alkene(C28-           7  ........  SPO
 C250) amine.
Sunflower seed oil, see Oil, edible:            34  ........  .................  OSN (VEO).
 Sunflower seed.
Tall oil, see Oil, misc: Tall............       34  ........  .................  OTL (OTI/OTJ).
Tall oil, crude, see Oil, misc: Tall,           34      2, 3  .................  OTI (OTJ/OTL).
 crude *.
Tall oil, distilled, see Oil, misc: Tall,       34         3  .................  OTJ (OTI/OTL).
 distilled *.
Tall oil, fatty acid, see Oil, misc: Tall       34  ........  .................  OTT.
 fatty acid.
Tall oil fatty acid (resin acids less           34         2  .................  OTK (OTT).
 than 20%), see Oil, misc: Tall oil fatty
 acid (resin less than 20%).
Tall oil soap (crude)....................        4  ........  TOR                TOS.
Tall oil, pitch, see Oil, misc: Tall            34         3  .................  OTP (OTI/OTJ/OTL).
 pitch *.
Tallow...................................       34         2  TLO
Tallow alcohol, see Alcohols (C13 + )....       20         2  TFA                ALY (ASY).
Tallow alkyl nitrile.....................       37  ........  TAN
Tallow fatty acid........................       34         2  TFD
Tallow fatty alcohol, see Alcohols (C13 +       20  ........  TFA                ALY.
 ).

[[Page 115]]

 
TAME, see tert-Amyl methyl ether.........       40  ........  .................  AYE.
Tertiary butyl phenols...................       21  ........  BLT                BTP.
1,1,2,2-Tetrachloroethane................       36  ........  TEC                TEE.
Tetradecanol, see Alcohols (C13 + )......       20  ........  TTN                ALY.
Tetradecene, see the olefins or alpha-          30  ........  .................  OAM/OFY/OFW/OFZ/TDD.
 olefin entries.
Tetradecylbenzene, see Alkyl(C9 + )             32  ........  TDB                AKB.
 benzenes.
Tetraethylene glycol.....................       40  ........  TTG
Tetraethylene glycol methyl ether, see          40  ........  .................  PAG.
 Poly(2-8)alkylene glycol monoalkyl(C1-
 C6) ether.
Tetraethylene pentamine..................        7         2  TTP
Tetraethyl silicate monomer/oligomer (20%        0      1, 3  TSM
 in ethanol) *.
Tetrahydrofuran..........................       41  ........  THF
Tetrahydronaphthalene....................       32  ........  THN
Tetramethylbenzene (all isomers).........       32  ........  TTC                TTB.
Tetrapropylbenzene, see Alkyl(C9 +              32  ........  .................  AKB.
 )benzenes.
Tetrasodium salt of                            43.  ........  .................  EDS.
 ethylenediaminetetraacetic acid
 solution, see Ethylenediaminetetraacetic
 acid, tetrasodium salt solution.
Titanium dioxide slurry..................       43  ........  TDS
Titanium tetrachloride...................        2  ........  TTT
Toluene..................................       32  ........  TOL
Toluenediamine...........................        9  ........  TDA
Toluene diisocyanate.....................       12  ........  TDJ                TDI/TDJ.
o-Toluidine..............................        9  ........  TLI                TOD/TOI.
Triarylphosphate, see Triisopropylated          34  ........  TRA                TPL.
 phenyl phosphates.
Tributyl phosphate.......................       34  ........  TBP
1,2,3-Trichlorobenzene (molten) *........       36         3  TBZ                TCB.
1,2,4-Trichlorobenzene...................       36  ........  TCB                TBZ.
1,1,1-Trichloroethane....................       36         2  TCE                TCM.
1,1,2-Trichloroethane....................       36  ........  TCM                TCE.
Trichloroethylene........................       36         2  TCL
1,2,3-Trichloropropane...................       36         2  TCN
1,1,2-Trichloro-1,2,2-trifluoroethane....       36  ........  TTF
Tricresyl phosphate (containing 1% or           34         3  TCO                TCP/TCQ.
 more ortho-isomer) *.
Tricresyl phosphate (containing less than       34         3  TCP                TCO/TCQ.
 1% ortho-isomer) *.
Tridecane (all isomers), see Alkanes (C10       31  ........  TRD                ALV (ALJ).
 + ) (all isomers).
Tridecanoic acid.........................       34  ........  TDO
Tridecanol, see Alcohols (C13 + )........       20  ........  TDN                ALY (ASK/ASY/AYK/LAL).
Tridecene, see Olefins (C13 + )..........       30  ........  TRD                OAM/OFY/OFW/OFZ/TDC.
Tridecyl acetate.........................       34  ........  TAE
Tridecylbenzene, see Alkyl(C9 + )               32  ........  TRB                AKB.
 benzenes.
Triethanolamine..........................        8         2  TEA
Triethylamine............................        7  ........  TEN
Triethylbenzene..........................       32  ........  TEB
Triethylene glycol.......................       40  ........  TEG
Triethylene glycol butyl ether, see             40  ........  TBE                PAG.
 Poly(2-8)alkylene glycol monoalkyl (C1-
 C6) ether.
Triethylene glycol butyl ether mixture...       40  ........  TBD
Triethylene glycol di-(2-ethylbutyrate)..       34  ........  TGD
Triethylene glycol ether mixture.........       40  ........  TYM
Triethylene glycol ethyl ether, see             40  ........  TGE                PAG.
 Poly(2-8)alkylene glycol monoalkyl(C1-
 C6) ether.
Triethylene glycol methyl ether, see            40  ........  TGY                PAG.
 Poly(2-8)alkylene glycol monoalkyl(C1-
 C6) ether.
Triethylenetetramine.....................        7         2  TET
Triethyl phosphate.......................       34  ........  TPS
Triethyl phosphite.......................       34         2  TPI
Triisobutylene...........................       30  ........  TIB
Triisooctyl trimellitate.................       34  ........  TIS
Triisopropanolamine......................        8  ........  TIP
Triisopropanolamine salt of 2,4-                43  ........  .................  DTI.
 Dichlorophenoxyacetic acid solution, see
 2,4-Dichlorophenoxyacetic acid,
 Triisopropanolamine salt solution.
Triisopropylated phenyl phosphates.......       34  ........  TPL
Trimethylacetic acid.....................        4  ........  TAA
Trimethylamine solution (30% or less)....        7  ........  TMT                TMA.
Trimethylbenzene (all isomers)...........       32  ........  TRE                TMB/TMD/TME.
Trimethyl nonanol, see Dodecanol.........       20  ........  .................  DDN (ASK/ASY/LAL).
Trimethylol propane polyethoxylated......       40  ........  TPR
2,2,4-Trimethyl-1,3-pentanediol                 34  ........  TMQ
 diisobutyrate.
2,2,4-Trimethyl-1,3-pentanediol-1-              34  ........  TMP
 isobutyrate.
2,2,4-Trimethyl-3-pentanol-1-isobutyrate.       34  ........  TMR

[[Page 116]]

 
1,3,5-Trioxane...........................       41         2  TRO
Triphenylborane (10% or less)/Caustic            5  ........  TPB
 soda solution.
Tripropylene, see Propylene trimer.......       30  ........  .................  PTR.
Tripropylene glycol......................       40  ........  TGC
Tripropylene glycol methyl ether, see           40  ........  TGM                PAG.
 Poly(2-8)alkylene glycol monoalkyl(C1-
 C6) ether.
Trisodium nitrilotriacetate solution, see       34  ........  TSO                NCA (TSN).
 Nitrilotriacetic acid, trisodium salt
 solution.
Trisodium phosphate solution.............        5  ........  TSP
Trisodium salt of N-                            43  ........  .................  HET.
 (Hydroxyethyl)ethylenediaminetriacetic
 acid solution, see N-
 (Hydroxyethyl)ethylenediaminetriacetic
 acid, trisodium salt solution.
Trixylenyl phosphate, see Trixylyl              34  ........  .................  TRP.
 phosphate.
Trixylyl phosphate.......................       34  ........  .................  TRP.
Tung oil, see Oil, misc: Tung............       34  ........  .................  OTG
Turpentine...............................       30  ........  TPT
Turpentine substitute, see White spirit         33  ........  .................  WSL (WSP).
 (low (15-20%) aromatic).
Ucarsol CR Solvent 302 SG................        8  ........  UCS
Undecane (all isomers), see Alkanes (C10        31  ........  UDN                ALV (ALJ).
 + ) (all isomers).
Undecanoic acid..........................        4  ........  UDA
Undecanol, see Undecyl alcohol...........       20  ........  .................  UND (ALR).
Undecene.................................       30  ........  UDD                UDC.
1-Undecene...............................       30  ........  UDC                UDD.
Undecyl alcohol..........................       20  ........  UND                ALR.
Undecylbenzene, see Alkyl(C9 + ) benzenes  .......  ........  UDB                AKB.
Urea, Ammonium mono- and di-hydrogen             0         1  UPX
 phosphate/Potassium chloride solution.
Urea/Ammonium nitrate solution *.........       34         3  UAV                ANU/UAS/UAT/UAU.
Urea/Ammonium nitrate solution                  43  ........  UAU                ANU/UAS/UAT/UAV.
 (containing less than 1% free Ammonia).
Urea/Ammonium nitrate solution                   6  ........  UAT                ANU/UAS/UAU/UAV.
 (containing less than 2% free Ammonia).
Urea/Ammonium phosphate solution.........       43  ........  UAP
Urea solution............................       43  ........  USL                URE.
Valeraldehyde (all isomers)..............       19  ........  VAK                IVA/VAL.
Vanillin black liquor (free alkali               5  ........  VBL
 content 3% or more).
Vegetable oils, n.o.s....................       34  ........  VEO
    Including:
        Beechnut oil.....................
        Camelina oil.....................
        Cashew nut shell.................
        Castor oil.......................
        Cocoa butter.....................
        Coconut oil......................
        Corn oil.........................
        Cottonseed oil...................
        Croton oil.......................
        Groundnut oil....................
        Hazelnut oil.....................
        Illipe oil.......................
        Jatropha oil.....................
        Linseed oil......................
        Mango kernel oil.................
        Nutmeg butter....................
        Oiticica oil.....................
        Olive oil........................
        Palm kernel oil..................
        Palm kernel olein................
        Palm kernel stearin..............
        Palm mid fraction................
        Palm, non-edible industrial grade
        Palm oil.........................
        Palm olein.......................
        Palm stearin.....................
        Peanut oil.......................
        Peel oil (oranges and lemons)....
        Perilla oil......................
        Pine oil.........................
        Poppy seed oil...................
        Poppy oil........................
        Raisin seed oil..................
        Rapeseed oil.....................
        Rapeseed (low erucic acid
         containing less than 4% free
         fatty acids).
        Resin, distilled.................

[[Page 117]]

 
        Resin oil........................
        Rice bran oil....................
        Rosin oil........................
        Safflower oil....................
        Salad oil........................
        Sesame oil.......................
        Shea butter......................
        Soyabean oil.....................
        Sunflower seed oil...............
        Tall.............................
        Tall, crude......................
        Tall, distilled..................
        Tall, pitch......................
        Tucum oil........................
        Tung oil.........................
        Walnut oil.......................
Vegetable acid oils, n.o.s...............       34  ........  VAD
    Including:
        Corn acid oil....................
        Cottonseed acid oil..............
        Dark mixed acid oil..............
        Groundnut acid oil...............
        Mixed acid oil...................
        Mixed general acid oil...........
        Mixed hard acid oil..............
        Mixed soft acid oil..............
        Rapeseed acid oil................
        Safflower acid oil...............
        Soya acid oil....................
        Sunflower seed acid oil..........
Vegetable fatty acid distillates *              34         3  VFD
    Including:
        Palm kernel fatty acid distillate
        Palm oil fatty acid distillate...
        Tall fatty acid distillate.......
        Tall oil fatty acid distillate...
Vegetable protein solution (hydrolyzed)..       43  ........  VPS
Vinyl acetate............................       13         2  VAM
Vinyl chloride...........................       35  ........  VCM
Vinyl ethyl ether........................       13  ........  VEE
Vinylidene chloride......................       35  ........  VCI
Vinyl neodecanoate.......................       13         2  VND
Vinyltoluene.............................       13  ........  VNT
Water....................................       43  ........  WTR
Waxes....................................  .......  ........  WAX
    Candelilla                                  34  ........  WCD
    Carnauba.............................       34  ........  WCA
    Paraffin.............................       31  ........  WPF
    Petroleum............................       33  ........  WPT
White spirit, see White spirit (low (15-        33  ........  WSP                WSL.
 20%) aromatic).
White spirit (low (15-20%) aromatic).....       33  ........  WSL                WSP.
Wine, see Alcoholic beverages............       20  ........  ABV
Wood lignin with Sodium acetate/oxalate *        0      1, 3  WOL
Xylenes..................................       32  ........  XLX                XLM/XLO/XLP.
Xylenes/Ethylbenzene (10% or more)              32  ........  XEB
 mixture.
Xylenol..................................       21  ........  XYL
Zinc alkaryl dithiophosphate (C7-C16)....       34  ........  ZAD
Zinc alkenyl carboxamide.................       10  ........  ZAA
Zinc alkyl dithiophosphate (C3-C14)......       34  ........  ZAP
Zinc bromide/Calcium bromide solution,          43  ........  .................  DZB.
 see Drilling brine (containing Zinc
 salts).
----------------------------------------------------------------------------------------------------------------
Notes:
1. Because of very high reactivity or unusual conditions of carriage or potential compatibility problems, this
  commodity is not assigned to a specific group in Figure 1 to 46 CFR part 150 (Compatibility Chart).
2. See Appendix I to 46 CFR part 150 (Exceptions to the Chart).
3. `` * '' From the March 2012 Annex to the 2007 edition of the IBC Code.
4. Italicized words are not part of the cargo name but may be used in addition to the cargo name.


[78 FR 50162, Aug. 16, 2013]

[[Page 118]]



             Sec. Table II to Part 150--Grouping of Cargoes

------------------------------------------------------------------------
               Group                                Cargo
------------------------------------------------------------------------
0. Unassigned.....................  Acetone cyanohydrin \1 2\
                                    Alkenoic acid, polyhydroxy ester
                                     borated \1\
                                    Alkyl (C8-C10)/(C12-C14) : (60% or
                                     more/40% or less)
                                    Alkyl (C18-C28) toluenesulfonic acid
                                     \1\
                                    Alkyl (C11-C17) benzene sulfonic
                                     acid
                                    polyglucoside solution (55% or less)
                                     \1\
                                    Alkylbenzenesulfonic acid \1 2\
                                    Alkyl benzene distillation bottoms
                                     \1\
                                    Aluminium chloride, Hydrochloric
                                     acid solution \1\
                                    Aluminum chloride/Hydrogen chloride
                                     solution \1\
                                    Ammonium hydrogen phosphate solution
                                     \1\
                                    Ammonium nitrate solution \1\
                                    Ammonium thiocyanate, Ammonium
                                     thiosulfate solution \1\
                                    Benzenesulfonyl chloride \1 2\
                                    gamma-Butyrolactone \1 2\
                                    Chlorine \1\
                                    Chlorosulfonic acid \1\
                                    Decyloxytetrahydro-thiophene dioxide
                                     \1\
                                    tert-Dodecanethiol \1\
                                    2,4-Dichlorophenoxyacetic acid,
                                     Dimethylamine salt solution (70% or
                                     less) \1 2\
                                    Dimethylamine salt of 2,4-
                                     Dichlorophenoxyacetic acid solution
                                     \1 2\
                                    Dimethyl disulfide \1\
                                    Diphenylol propane-Epichlorohydrin
                                     resins \1\
                                    Dodecylbenzenesulfonic acid \1 2\
                                    Dodecyl hydroxypropyl sulfide \1 2\
                                    Ethylene oxide \1\
                                    Hydrogen peroxide solutions \1\
                                    Hydrogenated starch hydrolysate \1\
                                    Lactic acid \1 2\
                                    Ligninsulfonic acid, sodium salt
                                     solution \1\
                                    Liquid chemical wastes \1\
                                    Long chain alkaryl sulfonic acid
                                     (C16-C60) \1 2\
                                    Magnesium chloride solution \1 2\
                                    Malitol solution \1\
                                    Methyl cyclopentadienyl manganese
                                     tricarbonyl \1\
                                    Methyl cyclopentadienyl manganese
                                     tricarbonyl (60-70%) in mineral oil
                                     \1\
                                    Molybdenum polysulfide long chain
                                     alkyl dithiocarbamide complex \1\
                                    Molasses residue \1\
                                    Motor fuel antiknock compounds
                                     containing Lead alkyls \1\
                                    Naphthalene sulfonic acid-
                                     formaldehyde copolymer, sodium salt
                                     solution \1\
                                    NIAX POLYOL APP 240C \1 2\
                                    Nitrating acid \1\
                                    Nitric acid (greater than 70%) \1\
                                    o-Nitrophenol \1 2\
                                    Noxious Liquid Substance, n.o.s.
                                     (NLS's) \1\
                                    Oleum \1 2\
                                    Orange juice (concentrated) \1\
                                    Orange juice (not concentrated) \1\
                                    Oxygenated aliphatic hydrocarbon
                                     mixture \1\
                                    Phosphorus \1\
                                    Phthalate based polyester polyol \1
                                     2\
                                    Potassium polysulfide, Potassium
                                     thiosulfide solution (41% or less)
                                     \1\
                                    2-Propene-1-aminium, N,N-dimethyl-N-
                                     2-propenyl-, chloride, homopolymer
                                     solution \1\
                                    SAP 7001 \1\
                                    Sodium chlorate solution \1 2\
                                    Sodium dichromate solution \1 2\
                                    Sodium hydrogen sulfide, Sodium
                                     carbonate solution \1 2\
                                    Sodium sulfide, Hydrosulfide
                                     solution \1 2\
                                    Sodium thiocyanate solution \1 2\
                                    Sulfur \1\
                                    Tall oil fatty acid, barium salt \1
                                     2\
                                    Tetraethyl silicate monomer/oligomer
                                     (20% in ethanol) \1\
                                    Urea, Ammonium mono- and di-hydrogen
                                     phosphate, Potassium chloride
                                     solution \1\
                                    Wood lignin with Sodium acetate/
                                     oxalate \1\
1. Non-Oxidizing Mineral Acids....  Di-(2-ethylhexyl)phosphoric acid
                                    Ferric chloride solution
                                    Fluorosilicic acid (20-30%) in water
                                     solution
                                    Fluorosilicic acid (30% or less)
                                    Hydrochloric acid
                                    Phosphoric acid
                                    Polyaluminum chloride solution
2. Sulfuric Acids.................  Sulfuric acid \2\

[[Page 119]]

 
                                    Sulfuric acid, spent
                                    Titanium tetrachloride
3. Nitric Acids...................  Ferric nitrate, Nitric acid solution
                                    Nitric acid (70% or less)
                                    Nitric acid (70% and over)
4. Organic Acids..................  Acetic acid \2\
                                    Acid oil mixture from soya bean,
                                     corn (maize) and sunflower oil
                                     refining
                                    Acrylic acid \2\
                                    Butyric acid
                                    i-Butyric acid
                                    Cashew nut shell oil (untreated)
                                    Citric acid (70% or less)
                                    Chloroacetic acid solution
                                    Chloroacetic acid (80% or less)
                                    Chloropropionic acid
                                    Decanoic acid
                                    2,2-Dichloropropionic acid
                                    2,2-Dimethyloctanoic acid
                                    2-Ethylhexanoic acid
                                    Fatty acids, (C8-C10)
                                    Fatty acids, (C12 + )
                                    Fatty acids, (C16 + )
                                    Fatty acids, essentially linear (C6-
                                     C18) 2-ethylhexyl ester
                                    Fatty acid methyl esters
                                    Formic acid \2\
                                    Formic acid (over 85%) \2\
                                    Formic acid mixture (containing up
                                     to 18% Propionic acid and up to 25%
                                     Sodium formate) \2\
                                    Glycolic acid
                                    Glyoxylic acid
                                    n-Heptanoic acid
                                    1,6-Hexanediol distillation
                                     overheads
                                    Hexanoic acid
                                    2-Hydroxy-4-(methylthio)butanoic
                                     acid
                                    Jatropha oil
                                    Long chain alkyl (C13 + ) salicylic
                                     acid
                                    Metal fatty acid salt
                                    Metal long chain alkyl salt
                                    Methacrylic acid
                                    Microsilica slurry
                                    Naphthenic acid
                                    Neodecanoic acid
                                    Nonanoic acid
                                    Nonanoic, Tridecanoic acid mixture
                                    Octanoic acid (all isomers)
                                    n-Pentanoic acid, 2-Methyl butryic
                                     acid mixture
                                    Pentanoic acid
                                    Propionic acid
                                    Trimethylacetic acid
                                    Undecanoic acid
5. Caustics.......................  Ammonium sulfide solution (45% or
                                     less)
                                    Calcium hypochlorite solutions
                                    Calcium hypochlorite solution (15%
                                     or less)
                                    Calcium hypochlorite solution (more
                                     than 15%)
                                    Caustic potash solution \2\
                                    Caustic soda solution \2\
                                    Cresylate spent caustic
                                    Cresylic acid, sodium salt solution
                                    Kraft black liquor
                                    Kraft pulping liquors
                                    Mercaptobenzothiazol, sodium salt
                                     solution
                                    Potassium hydroxide solution \2\
                                    Sodium acetate, Glycol, Water
                                     mixture (containing Sodium
                                     hydroxide)
                                    Sodium aluminate solution
                                    Sodium borohydride, Sodium hydroxide
                                     solution
                                    Sodium carbonate solutions
                                    Sodium cyanide solution
                                    Sodium hydrosulfide solution \2\
                                    Sodium hydrosulfide, Ammonium
                                     sulfide solution \2\
                                    Sodium hydroxide solution \2\
                                    Sodium hypochlorite solution
                                    Sodium 2-mercaptobenzothiazol
                                     solution
                                    Sodium naphthenate solution
                                    Sodium nitrite solution
                                    Triphenylborane, Caustic soda
                                     solution

[[Page 120]]

 
                                    Trisodium phosphate solution
                                    Vanillin black liquor
6. Ammonia........................  Ammonia, anhydrous
                                    Ammonia, aqueous
                                    Ammonium hydroxide (28% or less
                                     Ammonia)
                                    Ammonium nitrate, Urea solution
                                     (containing Ammonia)
                                    Urea, Ammonium nitrate solution
                                     (containing Ammonia)
7. Aliphatic Amines...............  Alkenylamine mixtures
                                    Alkyl (greater than C8) amine,
                                     Alkenyl (greater than C12) acid
                                     ester in mineral oil
                                    Alkyl amine (C17 or greater)
                                    Alkyl (C12 + ) dimethylamine
                                    N-Aminoethylpiperazine
                                    Butylamine (all isomers)
                                    Calcium long chain alkyl phenolic
                                     amine (C8-C40)
                                    Crude piperazine
                                    Cyclohexylamine
                                    Dibutylamine
                                    Diethylamine
                                    Diethylenetriamine \2\
                                    Diisobutylamine
                                    Diisopropylamine
                                    Dimethylamine
                                    Dimethylamine solution (45% or less)
                                    Dimethylamine solution (greater than
                                     45% but not greater than 55%)
                                    Dimethylamine solution (greater than
                                     55% but not greater than 65%)
                                    N,N-Dimethylcyclohexylamine
                                    N,N-Dimethyldodecylamine
                                    Di-n-propylamine
                                    Diphenylamine, reaction product with
                                     2,2,4-Trimethylpentene
                                    Diphenylamines, alkylated
                                    Dodecylamine, Tetradecylamine
                                     mixture \2\
                                    Dodecyldimethylamine,
                                     Tetradecyldimethylamine mixture
                                    Ethoxylated tallow alkyl amine
                                    Ethoxylated tallow amine (>95%)
                                    Ethoxylated tallow alkyl amine,
                                     glycol mixture
                                    Ethylamine \2\
                                    Ethylamine solution (72% or less)
                                    Ethyleneamine EA 1302 \2\
                                    N-Ethyl-n-butylamine
                                    N-Ethyl cyclohexylamine
                                    Ethylenediamine \2\
                                    2-Ethyl hexylamine
                                    N-Ethylmethylallylamine
                                    Glyphosate solution (not containing
                                     surfactant)
                                    Hexamethylenediamine
                                    Hexamethylenediamine (molten)
                                    Hexamethylenediamine solution
                                    Hexamethylenetetramine
                                    Hexamethylenetetramine solutions
                                    Hexamethylenimine
                                    HiTec 321
                                    bis-(Hydrogenated tallow
                                     alkyl)methyl amines
                                    Isophorone diamine
                                    Isopropylamine
                                    Isopropylamine (70% or less)
                                     solution
                                    Long chain alkyl amine
                                    Long chain polyetheramine in
                                     alkyl(C2-C4)benzenes
                                    Metam sodium solution
                                    Methylamine solutions (42% or less)
                                    Morpholine \2\
                                    Oleylamine
                                    Pentaethylenehexamine
                                    Pentaethylenehexamine,
                                     Tetraethylenepentamine mixture
                                    Phosphate esters, alkyl (C12-C14)
                                     amine
                                    Polyalkenyl succinic anhydride amine
                                    Polyalkyl alkeneamine succinimide,
                                     molybdenum oxysulfide
                                    Polyethylene polyamines \2\
                                    Polyethylene polyamines (more than
                                     50% C5-C20 paraffin oil)
                                    Poly(iminoethylene)-graft-N-poly
                                     (ethyleneoxy) solution (90% or
                                     less)
                                    Polyisobutenamine in aliphatic (C10-
                                     C14) solvent
                                    Polyolefin amide alkeneamine (C28 +
                                     )
                                    Polyolefin amide alkeneamine polyol
                                    Poly olefin amine
                                    Poly (C17 + ) olefin amine

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                                    Polyolefin amide alkeneamine/
                                     Molybdenum oxysulfide mixture
                                    Polyoxypropylenediamine (MW 2000)
                                    Propanil, Mesityl oxide, Isophorone
                                     mixture
                                    Propylamine
                                    iso-Propylamine solution
                                    Roundup
                                    Sulfohydrocarbon, long chain (C18 +
                                     ) alkylamine mixture
                                    Tetraethylenepentamine \2\
                                    Triethylamine
                                    Triethylenetetramine \2\
                                    Trimethylamine solution
                                    Trimethylhexamethylene diamine
                                     (2,2,4- and 2,4,4-)
8. Alkanolamines..................  Alkyl (C12-C16) propoxyamine
                                     ethoxylate
                                    2-(2-Aminoethoxy)ethanol
                                    Aminoethyldiethanolamine,
                                     Aminoethylethanolamine solution
                                    Aminoethylethanolamine
                                    2-Amino-2-methyl-1-propanol
                                    Diethanolamine
                                    Diethylaminoethanol
                                    Diethylethanolamine
                                    Diisopropanolamine
                                    Dimethylethanolamine
                                    Ethanolamine
                                    Ethoxylated alkyloxy alkyl amine
                                    Ethoxylated long chain (C16 + )
                                     alkyloxyalkanamine
                                    Isopropanolamine
                                    Isopropanolamine solution
                                    N,N-bis (2-Hydroxyethyl) oleamide
                                    Linear alkyl (C12-C16) propoxyamine
                                     ethoxylate
                                    Methyl diethanolamine
                                    Propanolamine
                                    Triethanolamine \2\
                                    Triisopropanolamine
                                    Ucarsol CR Solvent 302 SG
9. Aromatic Amines................  Alkyl (C8-C9) phenylamine in
                                     aromatic solvents
                                    Amine C-6, morpholine process
                                     residue
                                    Aniline
                                    Calcium long chain alkyl phenolic
                                     amine (C8-C40)
                                    4-Chloro-2-methylphenoxyacetic acid,
                                     Dimethylamine salt solution
                                    Dialkyl (C8-C9) diphenylamines
                                    2,6-Diethylaniline
                                    Dimethylamine salt of 4-Chloro-2-
                                     methylphenoxyacetic acid solution
                                    2,6-Dimethylaniline
                                    Diphenylamine
                                    Diphenylamine (molten)
                                    Diphenylamine, reaction product with
                                     2,2,4-trimethylpentene
                                    Diphenylamines, alkylated
                                    2-Ethyl-6-methyl-N-(1-methyl-2-
                                     methoxyethyl)aniline
                                    N-Methylaniline
                                    2-Methyl-6-ethyl aniline
                                    2-Methyl-5-ethyl pyridine
                                    Methyl pyridine
                                    2-Methylpyridine
                                    3-Methylpyridine
                                    4-Methylpyridine
                                    N-Methyl-2-pyrrolidone \2\
                                    Paraldehyde-Ammonia reaction product
                                    Polyolefin phenolic amine (C28-C250)
                                    Pyridine
                                    Pyridine bases
                                    Toluenediamine
                                    p-Toluidine
10. Amides........................  Acetochlor
                                    Acrylamide solution (50% or less)
                                    Alkenyl(C11 + )amide
                                    N,N-Dimethylacetamide
                                    N,N-Dimethylacetamide solution
                                    N,N-Dimethylacetamide solution (40%
                                     or less)
                                    Dimethylformamide
                                    Formamide
                                    N,N-bis(2-Hydroxyethyl) oleamide
                                    Octadecenoamide
                                    Organomolybdenum amide
                                    Polybutenyl succinimide

[[Page 122]]

 
                                    Polyisobutenyl succinimide
                                    Zinc alkenyl carboxamide
11. Organic Anhydrides............  Acetic anhydride
                                    Alkenylsuccinic anhydride
                                    Alkyl succinic anhydride
                                    Maleic anhydride
                                    Phthalate based polyester polyol
                                    Phthalic anhydride
                                    Polyisobutenyl anhydride adduct
                                    Polyisobutylene succinic anhydride
                                    Polyolefin anhydride
                                    Propionic anhydride
12. Isocyanates...................  Diphenylmethane diisocyanate
                                    Hexamethylene diisocyanate
                                    Isophorone diisocyanate
                                    Polymethylene polyphenyl isocyanate
                                    Toluene diisocyanate
                                    Trimethylhexamethylene diisocyanate
                                     (2,2,4- and 2,4,4-)
13. Vinyl Acetates................  Vinyl acetate
                                    Vinyl ethyl ether
                                    Vinyl neodecanate
                                    Vinyl toluene
14. Acrylates.....................  Butyl acrylate (all isomers)
                                    Butyl/Decyl/Cetyl/Eicosyl
                                     methacrylate mixture
                                    Butyl methacrylate
                                    i-Butyl methacrylate
                                    Butyl methacrylate, Decyl
                                     methacrylate, Cetyl-Eicosyl
                                     methacrylate mixture
                                    Cetyl-Eicosyl methacrylate mixture
                                    Decyl acrylate
                                    Dodecyl methacrylate
                                    Dodecyl-Octadecyl methacrylate
                                     mixture
                                    Dodecyl-Pentadecyl methacrylate
                                     mixture
                                    Ethyl acrylate
                                    2-Ethylhexyl acrylate
                                    Ethyl methacrylate
                                    2-Hydroxyethyl acrylate \2\
                                    Isobutyl methacrylate
                                    Methacrylic resin in Ethylene
                                     dichloride
                                    Methyl acrylate
                                    Methyl methacrylate
                                    Nonyl methacrylate
                                    Polyalkyl acrylate
                                    Polyalkyl(C18-C22) acrylate in
                                     Xylene
                                    Polyalkyl (C10-C18) methacrylate/
                                     Ethylene
                                    Polyalkyl methacrylate
                                    Polyalkyl methacrylate in mineral
                                     oil
                                    Polyalkyl (C10-C20) methacrylate
                                    Polyalkyl methacrylate solution
                                     (containing max 40% active
                                     material)
                                    Propylene copolymer mixture
                                    Roehm monomer 6615
15. Substituted Allyls............  Acrylonitrile \2\
                                    Allyl alcohol \2\
                                    Allyl chloride
                                    1,3-Dichloropropene
                                    Dichloropropene
                                    Dichloropropene, Dichloropropane
                                     mixtures
                                    Methacrylonitrile
16. Alkylene Oxides...............  Butylene oxide
                                    Ethylene oxide, Propylene oxide
                                     mixtures
                                    Ethylene oxide/Propylene oxide
                                     mixture with an Ethylene oxide
                                     content not more than 30% by mass)
                                    Propylene oxide
17. Epichlorohydrins..............  Chlorohydrins (crude)
                                    Epichlorohydrin
18. Ketones.......................  Acetone \2\
                                    Acetophenone
                                    Amyl methyl ketone
                                    Butyl heptyl ketone
                                    Camphor oil
                                    1-(4-Chlorophenyl)-4,4-dimethyl
                                     pentan-3-one \2\
                                    Cyclohexanone
                                    Cyclohexanone, Cyclohexanol mixtures
                                     \2\
                                    Diisobutyl ketone
                                    Ethyl amyl ketone

[[Page 123]]

 
                                    Epoxy resin
                                    Ketone residue
                                    Isophorone \2\
                                    Mesityl oxide \2\
                                    Methyl amyl ketone
                                    Methyl butyl ketone
                                    Methyl ethyl ketone \2\
                                    Methyl heptyl ketone
                                    Methyl isoamyl ketone
                                    Methyl isobutyl ketone \2\
                                    Methyl propyl ketone
                                    beta-Propriolactone
                                    Trifluralin in Xylene
19. Aldehydes.....................  Acetaldehyde
                                    Acrolein \2\
                                    Butyraldehyde (all isomers)
                                    Crotonaldehyde \2\
                                    Decaldehyde
                                    Ethylhexaldehyde
                                    2-Ethyl-3-propylacrolein \2\
                                    Formaldehyde, Methanol mixtures \2\
                                    Formaldehyde solutions \2\
                                    Furfural
                                    Glutaraldehyde solution
                                    Glyoxal solutions
                                    3-Methyl butyraldehyde
                                    Methylolureas
                                    3-(Methylthio)propionaldehyde
                                    Octyl aldehyde
                                    Paraldehyde
                                    Pentyl aldehyde
                                    Propionaldehyde
                                    Valeraldehyde
20. Alcohols, Glycols.............  Acrylonitrile-Styrene copolymer
                                     dispersion in Polyether polyol
                                    Alcoholic beverages
                                    Alcohol polyethoxylates
                                    Alcohol polyethoxylates, secondary
                                    Alcohols (C13 + )
                                    Alcohols (C12 + ), primary, linear
                                    Alcohols (C12-C13), primary, linear
                                     and essentially linear
                                    Alcohols (C14-C18), primary, linear
                                     and essentially linearAlkyl (C4-C9)
                                     phenols
                                    n-Amyl alcohol
                                    Amyl alcohol, primary
                                    sec--Amyl alcohol
                                    tert- Amyl alcohol
                                    Behenyl alcohol
                                    Bio-fuel blends of Gasoline and
                                     Ethyl alcohol (>25% but <99% by
                                     volume)
                                    Brake fluid base mixtures
                                    Brake fluid base mix: Poly(2-
                                     8)alkylene (C2-C3) glycols/
                                     Polyalkylene (C2-C10) glycols
                                     monoalkyl (C1-C4) ethers and their
                                     borate esters1,4-Butanediol
                                    Butyl alcohol \2\ (all isomers)
                                    n-Butyl alcohol
                                    iso-Butyl alcohol
                                    t-Butyl alcohols
                                    Butylene glycol \2\
                                    Cetyl-Stearyl alcohol
                                    Choline chloride solutions
                                    Cyclohexanol
                                    Cyclopentanol
                                    Decyl alcohol (all isomers) \2\
                                    Decyl/Dodecyl/Tetradecyl alcohol
                                     mixture
                                    Diacetone alcohol \2\
                                    Diethyl hexanol
                                    Diethylene glycol
                                    Diethylene glycol dibenzoate
                                    Diisobutyl carbinol
                                    2,2-Dimethylpropane-1,3-diol
                                    Dodecanol
                                    Dodecyl alcohol
                                    Dodecyl hydroxypropyl sulfide
                                    Ethoxylated alcohols, C11-C15
                                    2-Ethoxyethanol
                                    Ethyl alcohol \2\
                                    Ethyl butanol

[[Page 124]]

 
                                    Ethylene chlorohydrin
                                    Ethylene cyanohydrin
                                    Ethylene glycol \2\
                                    2-Ethylhexanol
                                    Furfuryl alcohol \2\
                                    Glycerine \2\
                                    Glycerine, Dioxanedimethanol mixture
                                    Glycerol monooleate
                                    Glycol
                                    Glycol mixture, crude
                                    Heptanol
                                    Hexamethylene glycol
                                    Hexanol
                                    Hexylene glycol
                                    Hydroxy terminated polybutadiene
                                    Icosa(oxypropane-2,3-diyl)s
                                    Isoamyl alcohol
                                    Isobutyl alcohol
                                    Isopropyl alcohol
                                    Lauryl polyglucose (50% or less)
                                    Methacrylic acid-alkyloxypoly
                                     (alkylene oxide) methacrylate
                                     copolymer sodium salt aqueous
                                     solution (45% or less)
                                    3-Methoxy-1-butanol
                                    Methyl alcohol \2\
                                    Methyl amyl alcohol
                                    alpha-Methylbenzyl alcohol with
                                     acetophenone (15% or less)
                                    Methyl butenol
                                    Methylbutynol
                                    2-Methyl-2-hydroxy-3-butyne
                                    Methyl isobutyl carbinol
                                    3-Methyl-3-methoxybutanol
                                    2-Methyl-1,3-propanediol
                                    Molasses
                                    Nonyl alcohol \2\
                                    Octanol (all isomers) \2\
                                    Octyl alcohol \2\
                                    Penacosa(oxypropane-2,3-diyl)s
                                    Pentadecanol
                                    Polyalkylene oxide polyol
                                    Polybutadiene, hydroxy terminated
                                    Polyglycerol
                                    Polyglycerine, Sodium salts solution
                                     (containing less than 3% Sodium
                                     hydroxide) \2\
                                    Polyolefin amide alkeneamine polyol
                                    Propyl alcohol \2\
                                    Propylene glycol \2\
                                    Rum
                                    Sodium methylate solution (21-30% in
                                     Methanol)
                                    Sorbitol solutions
                                    Stearyl alcohol
                                    Tallow fatty alcohol
                                    Tetradecanol
                                    Tridecanol
                                    Trimethyl nonanol
                                    Trimethylol propane polyethoxylate
                                    Undecanol
                                    Undecyl alcohol
21. Phenols, Cresols..............  Alkylated (C4-C9) hindered phenols
                                    Benzyl alcohol
                                    Carbolic oil
                                    Creosote \2\
                                    Creosote (coal tar) \2\
                                    Creosote (wood tar) \2\
                                    Cresols (all isomers)
                                    Cresylic acid
                                    Cresylic acid dephenolized
                                    Cresylic acid, tar
                                    Dibutylphenols
                                    2,4-Dichlorophenol
                                    Di-tert-butyl phenols
                                    2,4-Di-tert-butyl phenols
                                    2,6-Di-tert-butyl phenols
                                    Dodecyl phenol
                                    o-Ethylphenol
                                    Long chain alkylphenate/phenol
                                     sulfide mixture

[[Page 125]]

 
                                    Methylene bridged isobutylenated
                                     phanols
                                    Nonyl phenol
                                    Nonyl phenol (48-62%)/Phenol (42-
                                     48%)/Dinonyl phenol (1-10%) mixture
                                    Octyl phenol
                                    Phenol
                                    Xylenols
22. Caprolactam Solutions.........  Caprolactam solution
                                    epsilon-Caprolactam (molten or
                                     aqueous solutions)
23-29. Unassigned.................
30. Olefins.......................  Acrylic acid/ethenesulfonic acid
                                     copolymer with phosphonate groups,
                                     sodium salt solution
                                    Amylene
                                    Aryl polyolefin (C11-C50)
                                    Butadiene
                                    Butadiene, Butylene mixtures (cont.
                                     Acetylenes)
                                    Butadiene Feedstock [Kirby]
                                    Butene
                                    Butene oligomer
                                    Butylene
                                    1,5,9-Cyclododecatriene
                                    1,3-Cyclopentadiene dimer (molten)
                                    Cyclopentadiene, Styrene, Benzene
                                     mixture
                                    Cyclopentene
                                    Decene
                                    Dichloropropene
                                    Dicyclopentadiene
                                    Dicyclopentadiene, Resin Grade, 81-
                                     89%
                                    Diisobutylene
                                    Dipentene
                                    Dodecene
                                    Ethylene
                                    Ethylene-Propylene copolymer
                                    Ethylidene norbornene \2\
                                    1-Heptene
                                    Hexene (all isomers)
                                    Isoprene
                                    Isoprene concentrate (Shell)
                                    Latex (ammonia (1% or less)
                                     inhibited
                                    Methyl acetylene, Propadiene mixture
                                    Methyl butene
                                    Methylcyclopentadiene dimer
                                    2-Methyl-1-pentene
                                    4-Methyl-1-pentene
                                    alpha-Methyl styrene
                                    Myrcene
                                    Nonene
                                    1-Octadecene
                                    Octene
                                    Olefin mixtures
                                    Olefin mixture (C7-C9) C8 rich,
                                     stabilized
                                    Olefin mixtures (C5-C7)
                                    Olefin mixtures (C5-C15)
                                    alpha-Olefins (C6-C18) mixtures
                                    alpha-Olefins (C13 + )
                                    1,3-Pentadiene
                                    1,3-Pentadiene (greater than 50%),
                                     Cyclopentene and isomers, mixtures
                                    Pentene
                                    alpha-Pinene
                                    beta-Pinene
                                    Polybutene
                                    Poly(4 + )isobutylene
                                    Polyolefin in mineral oil
                                    Polyolefin (molecular weight 300 + )
                                    Polypropylene
                                    Poly(5 + )propylene
                                    Propylene
                                    Propylene-butylene copolymer
                                    Propylene dimer
                                    Propylene, Propane, MAPP gas mixture
                                    Propylene tetramer
                                    Propylene trimer
                                    Styrene monomer
                                    Tetradecene
                                    Tridecene
                                    Triisobutylene

[[Page 126]]

 
                                    Tripropylene
                                    Turpentine
                                    Undecene
31. Paraffins.....................  Alkanes (C6-C9)
                                    Alkanes (C10-C26) linear and
                                     branched
                                    Alkanes (C10-C26) linear and
                                     branched (flash point >60 C)n-
                                     Alkanes (C10 + )
                                    iso- & cyclo-Alkanes (C10-C11)
                                    iso- & cyclo-Alkanes (C12 + )
                                    Aviation alkylates (C8 paraffins and
                                     iso-paraffins BPT 95-120 C)
                                    Butane
                                    Cycloheptane
                                    Cyclohexane
                                    Cyclopentane
                                    Decane
                                    Dodecane
                                    Ethane
                                    Ethyl cyclohexane
                                    Heptane
                                    Hexane \2\
                                    Isopropylcyclohexane
                                    Methane
                                    Methylcyclohexane
                                    2-Methyl pentane
                                    Mineral oil
                                    Nonane
                                    Octane
                                    Paraffin wax
                                    Pentane
                                    Polyalpha olefins
                                    Polyolefin (molecular weight 300 + )
                                    Propane
                                    iso-Propylcyclohexane
                                    Tridecane
                                    Waxes:
                                    Paraffin
32. Aromatic Hydrocarbons.........  Alkyl(C3-C4)benzenes
                                    Alkyl(C5-C8)benzenes
                                    Alkyl(C9 + )benzenes
                                    Alkyl acrylate-Vinyl pyridine
                                     copolymer in Toluene
                                    Alkylbenzene, Alkylindane,
                                     Alkylindene mixture (each C12-C17)
                                    Alkylbenzene mixtures (containing at
                                     least 50% of Toluene)
                                    Alkyl toluene
                                    Alkyl (C18 + ) toluene
                                    Aryl polyolefin (C11-C50)
                                    Benzene
                                    Benzene hydrocarbon mixtures (having
                                     10% Benzene or more)
                                    Benzene, Toluene, Xylene mixtures
                                    Butylbenzene (all isomers)
                                    Butyl phenol, Formaldehyde resin in
                                     Xylene
                                    Butyl toluene
                                    Cumene
                                    Cymene
                                    Decylbenzene
                                    Dialkyl(C10-C14) benzenes
                                    Diethylbenzene
                                    Diisopropylbenzene (all isomers)
                                    Diisopropyl naphthalene
                                    Diphenyl
                                    Dodecylbenzene
                                    Dodecyl xylene
                                    Ethylbenzene
                                    Ethyl toluene
                                    1-Hexadecylnaphthalene, 1, 4-
                                     bis(Hexadecyl)
                                    1,1-Hexadecylnaphthalene/1,4-bis
                                     (hexadecyl) naphthalene mixture
                                    1,n-Hexadecylnaphthalene (90%), 1,4-
                                     Di-n-(hexadecyl-naphthalene (10%)
                                    Isopropylbenzene
                                    Methyl naphthalene (molten)
                                    Naphthalene (molten)
                                    Naphthalene mixture
                                    Naphthalene still residue
                                    1-Phenyl-1-xylyl ethane
                                    Parachlorobenzotrifluoride
                                    Poly(2 + )cyclic aromatics
                                    Polyolefin amine in alkylbenzenes
                                     (C2-C4)

[[Page 127]]

 
                                    Polyolefin amine in aromatic solvent
                                    Propylbenzene
                                    Pseudocumene
                                    Pyrolysis gasoline (containing
                                     Benzene)
                                    C9 Resinfeed (DSM) \2\
                                    Tetradecylbenzene
                                    Tetrahydronaphthalene
                                    1,2,3,5-Tetramethylbenzene
                                    Toluene
                                    Tridecylbenzene
                                    Triethylbenzene
                                    Trimethylbenzene
                                    Undecylbenzene
                                    Xylene
                                    Xylenes, Ethylbenzene mixture
33. Miscellaneous Hydrocarbon       Alachlor
 Mixtures.                          Alachlor technical (90% or more)
                                    Alkylbenzenesulfonic acid, sodium
                                     salt solutions
                                    Alkyl dithiothiadiazole (C6-C24)
                                    Alkyl toluene sulfonic acid, calcium
                                     salts
                                    Alkyl (C18-C28) toluene sulfonic
                                     acid, Calcium salts, high overbase
                                    Alkyl (C18-C28) toluene sulfonic
                                     acid, Calcium salts, low
                                     overbaseAsphalt blending stocks,
                                     roofers flux
                                    Asphalt blending stocks, straight
                                     run residue
                                    Asphalt emulsion
                                    Asphalt, kerosene, and other
                                     components
                                    Bio-fuel blends of Diesel/gas oil
                                     and Alkanes (C10-C26), linear and
                                     branched with a flash point >60 C
                                     (>25% but <99% by volume)
                                    Bio-fuel blends of Diesel/gas oil
                                     and Alkanes (C10-C26), linear and
                                     branched with a flash point <60 C
                                     (>25% but <99% by volume)
                                    Calcuim sulfonate, Calcium
                                     carbonate, Hydrocarbon solvent
                                     mixture
                                    Coal tar
                                    Coal tar distillate
                                    Coal tar, high temperature
                                    Coal tar pitch (molten)
                                    Decahydronaphthalene
                                    Degummed C9 (DOW)
                                    Diphenyl, Diphenyl ether
                                    Distillates
                                    Distillates, flashed feed stocks
                                    Distillates, straight run
                                    Drilling mud (low toxicity) (if
                                     flammable or combustible)
                                    Gas oil, cracked
                                    Gasoline blending stock, alkylates
                                    Gasoline blending stock, reformates
                                    Gasolines:
                                      Automotive (not over 4.23 grams
                                     lead per gal.)
                                      Aviation (not over 4.86 grams lead
                                     per gal.)
                                      Casinghead (natural)
                                      Polymer
                                      Straight run
                                    Jet Fuels:
                                      JP-4
                                      JP-5
                                      JP-8
                                    Kerosene
                                    Maleated ethylene-propylene
                                     copolymer reaction product
                                     [synthetic rubber]
                                    Mineral spirits
                                    Naphtha:
                                      Coal tar solvent
                                      Petroleum
                                      Solvent
                                      Stoddard solvent
                                      Varnish Makers' and Painters'
                                    Oil, fuel:
                                      No. 1
                                      No. 1-D
                                      No. 2
                                      No. 2-D
                                      No. 4
                                      No. 5
                                      No. 6
                                    Oil, misc:
                                      Aliphatic

[[Page 128]]

 
                                      Aromatic
                                      Clarified
                                      Coal
                                      Crude
                                      Diesel
                                      Gas, high pour
                                      Heartcut distillate
                                      Linseed
                                      Lubricating
                                      Mineral
                                      Mineral seal
                                      Motor
                                      Neatsfoot
                                      Penetrating
                                      Pine
                                      Rosin
                                      Sperm
                                      Spindle
                                      Turbine
                                      Residual
                                      Road
                                      Transformer
                                    Oxyalkylated alkyl phenol
                                     formaldehyde
                                    Petrolatum
                                    Pine oil
                                    Polybutene
                                    Polyolefin amine (C28-C250)
                                    Polyolefin amide alkeneamine (C17 +
                                     )
                                    Polyolefin amide alkeneamine (C28 +
                                     )
                                    Polyolefin amide alkeneamine borate
                                     (C28-C250)
                                    Polyolefin amide alkeneamine in
                                     mineral oil
                                    Resin oil, distilled
                                    Sodium petroleum sulfonate
                                    Sulfohydrocarbon (C3-C88)
                                    Waxes:
                                      Petroleum
                                    Sulfurized fat (C14-C20)
                                    Sulfurized polyolefinamide
                                     alkeneamines (C28-C250)
                                    White spirit (low (15-20%) aromatic)
34. Esters........................  Acid oil mixture from soybean, corn
                                     (maize) and sunflower oil refining
                                    Alkane (C14-C17) sulfonic acid,
                                     sodium salt solution
                                    Alkyl(C8 + )amine, Alkenyl (C12 + )
                                     acid ester mixture
                                    Alkylaryl phosphate mixtures, (more
                                     than 40% Diphenyl tolyl phosphate.
                                     Less than 0.02% ortho-isomer)
                                    Alkyl dithiocarbamate (C19-C35)
                                    Alkyl ester copolymer (C4-C20)
                                    Alkyl ester copolymer (C6-C18)
                                    Alkyl ester copolymer in mineral oil
                                    Alkyl(C7-C9) nitrates \2\
                                    Alkyl (C8-C40) phenol sulfide
                                    Alkyl (C10-C20, saturated and
                                     unsaturated) phosphite
                                    Alkyl sulfonic acid ester of phenol
                                    Alkyl (C18-C28) toluene sulfonic
                                     acid, Calcium salts, borated
                                    Alkylaryl phosphate mixtures (more
                                     than 40%)
                                    Amyl acetate (all isomers)
                                    Amyl acid phosphate
                                    t-Amyl formate
                                    Animal and Fish oils, n.o.s.
                                    Animal and Fish acid oils and
                                     distillates, n.o.s.
                                    Barium long chain alkaryl (C11-C50)
                                     sulfonate
                                    Barium long chain alkyl(C8-
                                     C14)phenate sulfide
                                    Benzene tricarboxylic acid trioctyl
                                     ester
                                    Benzyl acetate
                                    Bio-fuel blends of Diesel/gas oil
                                     and FAME (>25% but <99% by volume)
                                    Bio-fuel blends of Diesel/gas oil
                                     and vegetable oil (>25% but <99% by
                                     volume)
                                    Boronated calcium sulfonate
                                    Butyl acetate (all isomers)
                                    Butyl benzyl phthalate
                                    Butyl butyrate (all isomers)
                                    Butyl formate
                                    iso-Butyl isobutyrate
                                    n-Butyl propionate
                                    Butyl stearate
                                    Calcium alkaryl sulfonate (C11-C50)
                                     Calcium alkyl(C9)phenol sulfide,
                                     polyolefin phosphorosulfide mixture

[[Page 129]]

 
                                    Calcium alkyl (C10-C28)
                                     salicylateCalcium carbonate slurry
                                    Calcium long chain alkaryl sulfonate
                                     (C11-C50)
                                    Calcium long chain alkyl (C5-C10)
                                     phenate
                                    Calcium long chain alkyl (C5-C20)
                                     phenate
                                    Calcium long chain alkyl (C11-C40)
                                     phenate
                                    Calcium long chain alkyl phenate
                                     sulfide (C8-C40)
                                    Calcium long chain alkyl phenates
                                    Calcium long chain alkyl salicylate
                                     (C13 + )
                                    Calcium long chain alkyl (C18-C28)
                                     salicylate
                                    Calcium nitrate, Magnesium nitrate,
                                     Potassium chloride solution
                                    Calcium nitrate
                                    Calcium nitrate solutions (50% or
                                     less)
                                    Calcium salts of fatty acids
                                    Calcium stearate
                                    Camelina oil
                                    Cesium formate solution
                                    Cobalt naphthenate in solvent
                                     naphtha
                                    Coconut oil, fatty acid
                                    Coconut oil, fatty acid methyl ester
                                    Copper salt of long chain (C3-C16)
                                     fatty acid
                                    Copper salt of long chain (C17 + )
                                     fatty acid
                                    Copper salt of long chain alkanoic
                                     acids
                                    Cottonseed oil, fatty acid
                                    Cyclohexyl acetate
                                    Decyl acetate
                                    Dialkyl(C7-C13) phthalates
                                    Dialkyl(C7-C17) phthalates
                                    Dialkyl thiophosphates sodium salts
                                     solution
                                    Dibutyl hydrogen phosphonate
                                    Dibutyl phthalate
                                    Dibutyl terephthalate
                                    Diethylene glycol butyl ether
                                     acetate
                                    Diethylene glycol dibenzoate
                                    Diethylene glycol ethyl ether
                                     acetate
                                    Diethylene glycol methyl ether
                                     acetate
                                    Diethylene glycol phthalate
                                    Di-(2-ethylhexyl)adipate
                                    Di-(2-ethylhexyl)phthalate
                                    Diethyl phthalate
                                    Diethyl sulfate
                                    Diheptyl phthalate
                                    Dihexyl phthalate
                                    Di-n-hexyl adipate
                                    Diisobutyl phthalate
                                    Diisodecyl phthalate
                                    Diisononyl adipate
                                    Diisononyl phthalate
                                    Diisooctyl phthalate
                                    Dimethyl adipate
                                    Dimethylcyclicsiloxane hydrolyzate
                                    Dimethyl glutarate
                                    Dimethyl hydrogen phosphite \2\
                                    Dimethyl naphthalene sulfonic acid,
                                     sodium salt solution \2\
                                    Dimethyl phthalate
                                    Dimethyl polysiloxane
                                    Dimethyl succinate
                                    Dinonyl phthalate
                                    Dioctyl phthalate
                                    Diphenyl tolyl phosphate, less than
                                     0.02% ortho-isomer)
                                    Dipropylene glycol dibenzoate
                                    Dithiocarbamate ester (C7-C35)
                                    Ditridecyl adipate
                                    Ditridecyl phthalate
                                    2-Dodecenylsuccinic acid,
                                     dipotassium salt solution
                                    Diundecyl phthalate
                                    2-Ethoxyethyl acetate
                                    Ethyl acetate
                                    Ethyl acetoacetate
                                    Ethyl butyrate
                                    2-Ethyl-2-(2,4-dichlorophenoxy)
                                     acetate
                                    2-Ethyl-2-(2,4-dichlorophenoxy)
                                     propionate
                                    s-Ethyl dipropylthiocarbamate
                                    Ethylene carbonate
                                    Ethylene glycol

[[Page 130]]

 
                                    Ethylene glycol acetate
                                    Ethylene glycol butyl ether acetate
                                    Ethylene glycol diacetate
                                    Ethylene glycol ethyl ether acetate
                                    Ethylene glycol methyl ether acetate
                                    Ethyl-3-ethoxypropionate
                                    Ethyl hexyl phthalate
                                    2-Ethyl-2-(hydroxymethyl) propane-
                                     1,3-diol, C8-C10 ester
                                    Ethyl propionate
                                    Ethyl propionate
                                    Fatty acids (saturated, C14 + )
                                    Glycerol polyalkoxylate
                                    Glyceryl triacetate
                                    Glycidyl ester of C10 trialkyl
                                     acetic acid
                                    Gylcidyl ester of tridecylacetic
                                     acid
                                    Heptyl acetate
                                    Hexyl acetate
                                    Isobutyl formate
                                    Isopropyl acetate
                                    Lard
                                    Lauric acid
                                    Lecithin
                                    Magnesium long chain alkaryl
                                     sulfonate (C11-C50)
                                    Magnesium long chain alkyl phenate
                                     sulfide (C8-C20)
                                    Magnesium long chain alkyl phenate
                                     sulfide (C8-C40)
                                    Magnesium long chain alkyl
                                     salicylate (C11 + )
                                    Magnesium long chain alkyl
                                     salicylate (C13 + )
                                    Mango kernel
                                    3-Methoxybutyl acetate
                                    1-Methoxy-2-propyl acetate
                                    Methyl acetate
                                    Methyl acetoacetate
                                    Methyl amyl acetate
                                    Methyl butyrate
                                    Methyl formate
                                    3-Methyl-3-methoxybutyl acetate
                                    Methyl salicylate
                                    Metolachlor
                                    Naphthalene sulfonic acid, sodium
                                     salt solution (40% or less)
                                    Nitrilotriacetic acid, trisodium
                                     salt solution
                                    Nonyl acetate
                                    Octamethylcyclotetrasiloxane
                                    n-Octyl acetate
                                    Octyl decyl adipate
                                    Oil, edible:
                                      Beechnut
                                      Castor
                                      Cocoa butter
                                      Coconut \2\
                                      Cod liver
                                      Corn
                                      Cotton seed
                                      Fish \2\
                                      Groundnut
                                      Hazelnut
                                      Lard
                                      Lanolin
                                      Nutmeg butter
                                      Olive
                                      Palm \2\
                                      Palm kernel
                                      Peanut
                                      Poppy
                                      Poppy seed
                                      Raisin seed
                                      Rapeseed
                                      Rice bran
                                      Safflower
                                      Salad
                                      Sesame
                                      Soya bean
                                      Sunflower
                                      Sunflower seed
                                      Tucum

[[Page 131]]

 
                                      Vegetable
                                      Walnut
                                    Oil, misc:
                                      Animal
                                      Coconut oil, fatty actid methyl
                                    ester
                                      Cotton seed oil, fatty acid
                                      Lanolin
                                      Palm kernel oil, fatty acid methyl
                                    ester
                                      Palm oil, methyl ester
                                      Pilchard
                                      Perilla
                                      Soapstock
                                      Soyabean (epoxidized)
                                      Tall
                                      Tall, fatty acid \2\
                                      Tung
                                    Olefin/Alkyl ester copolymer
                                     (molecular weight 2000 + )
                                    Oleic acid
                                    Palm acid oil
                                    Palm fatty acid distillate
                                    Palm kernel acid oil
                                    Palm kernel acid oil, methyl
                                     esterPalm kernel oil fatty acid
                                    Palm mid fraction
                                    Palm oil
                                    Palm oil fatty acid
                                    Palm oil fatty acid methyl ester
                                    Palm kernel olein
                                    Palm kernel stearin
                                    Palm olein
                                    Palm stearin
                                    n-Pentyl propionate
                                    Phosphate esters
                                    Poly(2-8)alkylene glycol
                                     monoalkyl(C1-C6) ether acetate
                                    Polydimethylsiloxane
                                    Polyferric sulfate solution
                                    Polymethylsiloxane
                                    Polyolefin amide alkeneamine borate
                                     (C28-C250)
                                    Poly(20)oxyethylene sorbitan
                                     monooleate
                                    Polysiloxane
                                    Polysiloxane/White spirit, low (15-
                                     20%) aromatic
                                    Polyolefin aminoester salt
                                    Polyolefin ester (C28-C250)
                                    Polyolefin phosphorosulfide, barium
                                     derivative (C28-C250)
                                    Potassium formate solution
                                    Potassium formate solution (75% or
                                     more)
                                    Potassium oleate
                                    Potassium salt of polyolefin acid
                                    Propyl acetate
                                    Propylene carbonate
                                    Propylene glycol methyl ether
                                     acetate
                                    Rapeseed oil fatty acid methyl
                                     esters
                                    Rapeseed oil (low erucic acid
                                     containing less than 4% free fatty
                                     acids)
                                    Shea butter
                                    Siloxanes
                                    Sodium acetate, Glycol, Water
                                     mixture (not containing Sodium
                                     hydroxide) \2\
                                    Sodium acetate solution
                                    Sodium alkyl (C14-C17) sulfonates 60-
                                     65% solution
                                    Sodium benzoate solution
                                    Sodium bicarbonate solution (less
                                     than 10%)
                                    Sodium bromide solution (less than
                                     50%)
                                    Sodium dimethyl naphthalene
                                     sulfonate solution \2\
                                    Sodium long chain alkyl salicylate
                                     (C13 + )
                                    Sodium naphthalene sulfonate
                                     solution
                                    Sodium petroleum sulfonate
                                    Sodium sulfate solutions
                                    Soyabean oil (epoxidized)
                                    Stearic acid
                                    Tall oil
                                    Tall oil, crude
                                    Tall oil, distilled
                                    Tall oil fatty acid (Resin acids
                                     less than 20%) \2\
                                    Tall oil, pitch
                                    Tall oil soap, crude
                                    Tallow \2\

[[Page 132]]

 
                                    Tallow fatty acid \2\
                                    Tributyl phosphate
                                    Tricresyl phosphate
                                    Tricresyl phosphate (containing 1%
                                     or more ortho-isomer)
                                    Tricresyl phosphate (containing less
                                     than 1% ortho-isomer)
                                    Tridecanoic acid
                                    Tridecyl acetate
                                    Triethylene glycol dibenzoate
                                    Triethylene glycol di-(2-
                                     ethylbutyrate)
                                    Triethyl phosphate
                                    Triethyl phosphite \2\
                                    Triisooctyl trimellitate
                                    Triisopropylated phenyl phosphates
                                    2,2,4-Trimethyl-1,3-pentanediol
                                     diisobutyrate
                                    2,2,4-Trimethyl-1,3-pentanediol-1-
                                     isobutyrate
                                    2,2,4-Trimethyl-3-pentanol-1-
                                     isobutyrate
                                    Trimethyl phosphite \2\
                                    Trisodium nitrilotriacetate
                                    Trixylyl phosphate
                                    Trixylenyl phosphate
                                    Urea/Ammonium nitrate solution
                                    Vegetable acid oils and distillates,
                                     n.o.s.
                                    Vegetable fatty acid distillates
                                    Vegetable oils, n.o.s.
                                    Waxes:
                                      Carnauba
                                    Zinc alkaryl dithiophosphate (C7-
                                     C16)
                                    Zinc alkyl dithiophosphate (C3-C14)
35. Vinyl Halides.................  Vinyl chloride
                                    Vinylidene chloride
36. Halogenated Hydrocarbons......  Benzyl chloride
                                    Bromochloromethane
                                    Carbon tetrachloride \2\
                                    Catoxid feedstock \2\
                                    Chlorinated paraffins (C10-C13)
                                    Chlorinated paraffins (C14-C17)
                                     (with 50% Chlorine or more, and
                                     less than 1% C13 or shorter chains)
                                    Chlorinated paraffins (C14-C17)
                                     (with 52% chlorine)
                                    Chlorinated paraffins (C18 + ) with
                                     any level of chlorine
                                    Chlorobenzene
                                    Chlorodifluoromethane
                                    Chloroform
                                    Chlorotoluene
                                    m-Chlorotoluene
                                    o-Chlorotoluene
                                    p-Chlorotoluene
                                    Chlorotoluenes (mixed isomers)
                                    Dibromomethane
                                    Dibutylphenols
                                    3,4-Dichloro-1-butene
                                    Dichlorobenzene (all isomers)
                                    Dichlorodifluoromethane
                                    1,1-Dichloroethane
                                    1,6-Dichlorohexane
                                    Dichloromethane
                                    Dichloropropane
                                    Ethyl chloride
                                    Ethylene dibromide
                                    Ethylene dichloride \2\
                                    Methyl bromide
                                    Methyl chloride
                                    Monochlorodifluoromethane
                                    n-Propyl chloride
                                    Pentachloroethane
                                    Perchloroethylene
                                    1,1,2,2-Tetrachloroethane
                                    1,2,3-Trichlorobenzene
                                    1,2,3-Trichlorobenzene (molten)
                                    1,2,4-Trichlorobenzene
                                    1,1,1-Trichloroethane \2\
                                    1,1,2-Trichloroethane
                                    Trichloroethylene \2\
                                    1,2,3-Trichloropropane
                                    1,1,2-Trichloro-1,2,2-
                                     trifluoroethane

[[Page 133]]

 
37. Nitriles......................  Acetonitrile
                                    Acetonitrile (low purity grade)
                                    Adiponitrile
                                    Lactonitrile solution (80% or less)
                                    2-Methylglutaronitrile
                                    2-Methylglutaronitrile with 2-
                                     Ethylsuccinonitrile (12% or less)
                                    Propionitrile
                                    Tallow nitrile
38. Carbon Disulfide..............  Carbon disulfide
39. Sulfolane.....................  Sulfolane
40. Glycol Ethers.................  Alcohol (C9-C11) poly (2.5-9)
                                     ethoxylates
                                    Alcohol (C6-C17) (secondary) poly (3-
                                     6) ethoxylates
                                    Alcohol (C6-C17) (secondary) poly (7-
                                     12) ethoxylates
                                    Alcohol (C12-C16) poly (1-6)
                                     ethoxylates
                                    Alcohol (C12-C16) poly (7-19)
                                     ethoxylates
                                    Alcohol (C12-C16) poly (20 + )
                                     ethoxylates
                                    Alkyl (C7-C11) phenol poly(4-
                                     12)ethoxylate
                                    Alkyl (C9-C15) phenyl propoxylate
                                    Diethylene glycol \2\
                                    Diethylene glycol butyl ether
                                    Diethylene glycol dibutyl ether
                                    Diethylene glycol diethyl ether
                                    Diethylene glycol ethyl ether
                                    Diethylene glycol methyl ether
                                    Diethylene glycol n-hexyl ether
                                    Diethylene glycol phenyl ether
                                    Diethylene glycol propyl ether
                                    Dipropylene glycol
                                    Dipropylene glycol butyl ether
                                    Dipropylene glycol methyl ether
                                    Ethoxy triglycol
                                    Ethylene glycol hexyl ether
                                    Ethylene glycol methyl butyl ether
                                    Ethylene glycol monoalkyl ethers
                                    Ethylene glycol tert-butyl ether
                                    Ethylene glycol butyl ether
                                    Ethylene glycol dibutyl ether
                                    Ethylene glycol ethyl ether
                                    Ethylene glycol isopropyl ether
                                    Ethylene glycol methyl ether
                                    Ethylene glycol phenyl ether
                                    Ethylene glycol phenyl ether,
                                     Diethylene glycol phenyl ether
                                     mixture
                                    Ethylene glycol propyl ether
                                    Glucitol/glycerol blend propoxylated
                                     (containing less than 10% amines)
                                    Glycerol, ethoxylated
                                    Glycerol, propoxylated
                                    Glycerol, propoxylated and
                                     ethoxylated
                                    Glycerol/Sucrose blend propoxylated
                                     and ethoxylated
                                    Hexaethylene glycol
                                    alpha-Hydro-omega-hydroxytetradeca
                                     (oxytetramethylene)
                                    Methoxy triglycol
                                    Nonyl phenol poly(4 + )ethoxylates
                                    Pentaethylene glycol methyl ether
                                    Polyalkylene glycol butyl ether
                                    Polyalkylene glycols, Polyalkylene
                                     glycol monoalkyl ethers mixtures
                                    Polyether glycol (MW 600-700)
                                     (TETRAETHANE 650)
                                    Polyether glycol (MW 950-1050)
                                     (TETRAETHANE 1000)
                                    Polyether glycol (MW 1350-1450)
                                     (TETRAETHANE 1400)
                                    Polyether glycol (MW 1900-2100)
                                     (TETRAETHANE 2000)
                                    Polyether glycol (MW 2825-2975)
                                     (TETRAETHANE 2900)
                                    Polyethylene glycols
                                    Polyethylene glycol dimethyl ether
                                    Poly(ethylene glycol) methylbutenyl
                                     ether (MW>1000)
                                    Poly(2-8)alkylene glycol
                                     monoalkyl(C1-C6) ether
                                    Poly(2-8)alkylene glycol
                                     monoalkyl(C1-C6) ether acetate
                                    Polyethylene glycol monoalkyl ether
                                    Polypropylene glycol methyl ether
                                    Polypropylene glycols
                                    Poly(tetramethylene ether) glycols
                                     (MW 950-1050)
                                    Polytetramethylene ether glycol
                                    n-Propoxypropanol
                                    Propylene glycol monoalkyl ether
                                    Propylene glycol ethyl ether
                                    Propylene glycol methyl ether

[[Page 134]]

 
                                    Propylene glycol n-butyl ether
                                    Propylene glycol phenyl ether
                                    Propylene glycol propyl ether
                                    Tetraethylene glycol
                                    Tetraethylene glycol methyl ether
                                    Triethylene glycol
                                    Triethylene glycol butyl ether
                                    Triethylene glycol butyl ether
                                     mixture
                                    Triethylene glycol ether mixture
                                    Triethylene glycol ethyl ether
                                    Triethylene glycol methyl ether
                                    Tripropylene glycol
                                    Tripropylene glycol methyl ether
41. Ethers........................  Alcohol (C12-C13, branched and
                                     linear) poly (4-8) propoxy
                                     sulfates, sodium salt 25-30%
                                     solution
                                    Alkaryl polyether (C9-C20)
                                    tert-Amyl methyl ether
                                    Brominated Epoxy Resin in Acetone
                                    Butyl ether
                                    n-Butyl ether-Dichloroethyl ether
                                    2,2-Dichloroisopropyl etherDiethyl
                                     ether
                                    Diethylene glycol propyl ether
                                    Diglycidyl ether of Bisphenol A
                                    Diglycidyl ether of Bisphenol F
                                    Dimethyl furan
                                    1,4-Dioxane
                                    Diphenyl ether
                                    Diphenyl ether, Diphenyl phenyl
                                     ether mixture
                                    Ethyl tert-butyl ether
                                    Ethyl ether
                                    Isopropyl ether
                                    Long chain alkaryl polyether (C11-
                                     C20)
                                    Methyl-tert-butyl ether \2\
                                    Methyl tert-pentyl ether
                                    Polyether (molecular weight 2000 + )
                                    Polyether, borated
                                    Polyether polyols
                                    Poly(oxyalkylene)alkenyl ether
                                     (MW>1000)
                                    Polyoxybutylene alcohol
                                    Propyl ether
                                    Tetrahydrofuran
                                    1,3, 5-Trioxane
42. Nitrocompounds................  o-Chloronitrobenzene
                                    Dinitrotoluene
                                    Nitrobenzene
                                    Nitroethane
                                    Nitroethane (80%)/Nitropropane (20%)
                                    Nitroethane, 1-Nitropropane mixture
                                    Nitropropane
                                    Nitropropane, Nitroethane mixtures
                                    Nitrophenol (mixed isomers)
                                    o- or p-Nitrotoluenes
43. Miscellaneous Water Solutions.  Alkyl (C8-C10)/(C12-C14):(40% or
                                     less/60% or more) polyglucoside
                                     solution (55% or less)
                                    Alkyl (C8-C10)/(C12-C14):(50%/50%)
                                     polyglucoside solution (55% or
                                     less)
                                    Alkyl (C8-C10)/(C12-C14):(60% or
                                     more/40% or less) polyglucoside
                                     solution (55% or less)
                                    Alkyl (C8-C10) polyglucoside
                                     solution (65% or less)
                                    Alkyl (C12-C14) polyglucoside
                                     solution (55% or less)
                                    Alkyl polyglucoside solutions
                                    Aluminum hydroxide, sodium
                                     hydroxide, sodium carbonate
                                     solution (40% or less)
                                    Aluminum sulfate solution \2\
                                    2-Amino-2-hydroxymethyl-1,3-
                                     propanediol solution
                                    Ammonium bisulfite solution \2\
                                    Ammonium chloride solution (less
                                     than 25%) drilling brines
                                    Ammonium chloride solution (less
                                     than 25%)
                                    Ammonium lignosulfonate solution
                                    Ammonium nitrate, Urea solution (not
                                     containing Ammonia)
                                    Ammonium polyphosphate solution
                                    Ammonium sulfate solution
                                    Ammonium thiosulfate solution (60%
                                     or less)
                                    Barium sulfate slurry
                                    Calcium bromide solution
                                    Calcium chloride solution
                                    Calcium formate solution

[[Page 135]]

 
                                    Calcium lignosulfonate solution
                                    Calcium lignosulfonate solution
                                     (free alkali content 1% or less)
                                    Caramel solutions
                                    Clay slurry
                                    Coal slurry
                                    Corn syrup
                                    Dextrose solution
                                    2,4-Dichlorophenoxyacetic acid,
                                     Diethanolamine salt solution
                                    2,4-Dichlorophenoxyacetic acid,
                                     Triisopropanolamine salt solution
                                     \2\
                                    Diethanolamine salt of 2,4-
                                     Dichlorophenoxyacetic acid solution
                                    Diethylenetriamine pentaacetic acid,
                                     pentasodium salt solution
                                    Dodecyl diphenyl ether disulfonate
                                     solution
                                    Drilling brine (containing Calcium,
                                     Potassium, or Sodium salts)
                                    Drilling brine (containing Zinc
                                     salts)
                                    Drilling brines, including: Calcium
                                     bromide solution, Calcium chloride
                                     solution and Sodium chloride
                                     solution
                                    Drilling mud (low toxicity) (if non-
                                     flammable or non-combustible)
                                    Ethylenediaminetetracetic acid,
                                     tetrasodium salt solution
                                    Ethylene-Vinyl acetate copolymer
                                     emulsion
                                    Ferric hydroxyethylethylenediamine
                                     triacetic acid, trisodium salt
                                     solution \2\
                                    Ferrous chloride solution (less than
                                     40%, containing less than 10%
                                     Manganese and Aluminum chlorides)
                                    Fish solubles (water based fish meal
                                     extracts)
                                    Fructose solution
                                    Fumaric adduct of Rosin, water
                                     dispersion
                                    Hexamethylenediamine adipate
                                     solution
                                    N-(Hydroxyethyl)ethylene diamine
                                     triacetic acid, trisodium salt
                                     solution
                                    Kaolin clay slurry
                                    Latex: Carboxylated Styrene-
                                     Butadiene copolymer; Styrene-
                                     butadiene rubber
                                    Latex, liquid synthetic
                                    Lignin liquor
                                    Ligninsulfonic acid, magnesium salt
                                     solution
                                    Liquid Streptomyces solubles
                                    L-Lysine solution (60% or less)
                                    Magnesium nitrate solution (66.7%)
                                    N-Methylglucamine solution
                                    N-Methylglucamine solution (70% or
                                     less)
                                    Naphthenic acid, sodium salt
                                     solution
                                    Polyacrylic acid solution (40% or
                                     less)
                                    Potassium chloride solution
                                    Potassium chloride solution (less
                                     than 26%)
                                    Potassium thiosulfate solution
                                    Potassium thiosulfate solution (50%
                                     or less)
                                    Rosin soap (disproportionated)
                                     solution
                                    Sewage sludge, treated
                                    Sodium alkyl sulfonate solution
                                    Sodium bromide solution (less than
                                     50%)
                                    Sodium hydrogen sulfite solution
                                    Sodium lignosulfonate solution
                                    Sodium polyacrylate solution \2\
                                    Sodium salt of Ferric
                                     hydroxyethylethylenediamine
                                     triacetic acid solution
                                    Sodium silicate solution \2\
                                    Sodium sulfide solution
                                    Sodium sulfite solution
                                    Sodium sulfite solution (25% or
                                     less)
                                    Sodium tartrates, Sodium succinates
                                     solution
                                    Sulfonated polyacrylate solutions
                                     \2\
                                    Tall oil soap (disproportionated)
                                     solution
                                    Tetrasodium salt of EDTA solution
                                    Titanium dioxide slurry
                                    Triisopropanolamine salt of 2,4-
                                     Dichlorophenoxyacetic acid solution
                                    Urea, Ammonium nitrate solution (not
                                     containing Ammonia)
                                    Urea, Ammonium phosphate solution
                                    Urea solution
                                    Vegetable protein solution
                                     (hydrolysed)
                                    Water
------------------------------------------------------------------------
Notes:
\1\ Because of very high reactivity or unusual conditions of carriage or
  potential compatibility problems, this commodity is not assigned to a
  specific group in Figure 1 to 46 CFR part 150 (Compatibility Chart).
\2\ See Appendix I to 46 CFR part 150 (Exceptions to the Chart).

[78 FR 50187, Aug. 16, 2013]

[[Page 136]]



          Sec. Appendix I to Part 150--Exceptions to the Chart

    (a) The binary combinations listed below have been tested as 
prescribed in Appendix III to part 150 and found not to be dangerously 
reactive. These combinations are exceptions to Figure 1 of part 150 
(Compatibility Chart) and may be stowed in adjacent tanks.

------------------------------------------------------------------------
     Member of reactive group                 Compatible with
------------------------------------------------------------------------
Acetone (18).....................  Diethylenetriamine (7).
Acetone cyanohydrin (0)..........  Acetic acid (4).
Acrylonitrile (15)...............  Triethanolamine (8).
n-Butyl alcohol (20).............  Caustic Potash (50% or less).
1,3-Butylene glycol (20).........  Morpholine (7).
1,4-Butylene glycol (20).........  Ethylamine (7).
                                   Triethanolamine (8).
gamma-Butyrolactone (0)..........  N-Methyl-2-pyrrolidone (9).
Caustic potash, 50% or less (5)..  Isobutyl alcohol (20).
                                   Ethyl alcohol (20).
                                   n-Butyl alcohol (20).
                                   Ethylene glycol (20).
                                   Isopropyl alcohol (20).
                                   Methyl alcohol (20).
                                   iso-Octyl alcohol (20).
                                   Propylene glycol (20).
Caustic soda, 50% or less (5)....  Acrylonitrile/Styrene copolymer
                                    dispersion in Polyether polyol (20).
                                   iso-Butyl alcohol (20).
                                   Butyl alcohol (20).
                                   tert-Butyl alcohol, Methanol
                                    mixtures.
                                   Decyl alcohol (20).
                                   Cetyl alcohol (20).
                                   Alcohol (C12-C16) poly(1-
                                    6)ethoxylates) (20).
                                   iso-Decyl alcohol (20).
                                   Diacetone alcohol (20).
                                   Diethylene glycol (40).
                                   Dodecyl alcohol (20).
                                   Ethyl alcohol (20).
                                   Ethyl alcohol (40%, whiskey) (20).
                                   Ethylene glycol (20).
                                   Ethylene glycol, Diethylene glycol
                                    mixture (20).
                                   Ethyl hexanol (Octyl alcohol) (20).
                                   Methyl alcohol (20).
                                   Nonyl alcohol (20).
                                   iso-Decyl alcohol (20).
                                   iso-Nonyl alcohol (20).
                                   Propyl alcohol (20).
                                   iso-Propyl alcohol (20).
                                   Propylene glycol (20).
                                   Sodium chlorate solution (0).
                                   iso-Tridecanol (20).
1,1-Dichloroethane (36)..........  Dimethyl disulfide (0).
Dimethyl disulfide (0)...........  Acetic acid (4).
                                   Acetic anhydride (11).
                                   Acetone (18).
                                   Acrylates (14).
                                   Acrylic acid (4).
                                   Alcohols, Glycols (20).
                                   Aromatic hydrocarbons (32).
                                   Benzene (32).
                                   Cyclohexanone (18).
                                   Diisononyl phthalate (34).
                                   Esters (34).
                                   Ethyl acetate (34).
                                   Ethyl acrylate (14).
                                   Ethyl dichloride (36) [1,1-
                                    Dichloroethane].
                                   Ethylene cyanohydrin (20).
                                   Ethylene glycol ethyl ether acetate
                                    (34) [2-Ethoxyethyl acetate].
                                   Formic acid (4).
                                   Halogenated hydrocarbons (36).
                                   Ketones (18).
                                   Mesityl oxide, Methyl ethyl ketone
                                    (18).
                                   Octene, Olefins (30).
                                   Organic acids (4).
                                   Organic anhydrides (11).
                                   Paraffins (31).
                                   Phenol (21).
                                   Phenols, Cresols (21).

[[Page 137]]

 
                                   Trichloroethylene (36).
Diphenylmethane diisocyanate (12)  Perchloroethylene (36).
                                   Dichloromethane (36).
                                   2,2-Dimethylpropane-1,3-diol (20).
                                   Polypropylene glycol (40).
                                   Trichloroethylene (36).
tert-Dodecanethiol (0)...........  Acetone (18).
                                   Acrylonitrile (15).
                                   2-Butoxyethanol (20).
                                   n-Butyl acrylate (14).
                                   Caustic soda solution (50%) (5).
                                   Chloroform (36).
                                   iso-Decyl alcohol (20).
                                   Dichloromethane (36).
                                   Diglycidyl ether of Bisphenol A (41).
                                   Diisodecyl phthalate (34).
                                   Diglycidyl ether of Bisphenol A (41).
                                   Dichloromethane (36).
                                   Diisodecyl phthalate (DIDP) (34).
                                   Dipropylene glycol (40).
                                   Epichlorohydrin (17).
                                   Ethyl acrylate (14).
                                   Methanol (20).
                                   Methyl ethyl ketone (18).
                                   Naphtha, Solvent (33).
                                   iso-Nonyl alcohol (20).
                                   Perchloroethylene (36).
                                   iso-Propyl alcohol (20).
                                   iso-Propylamine solution (70%) (7).
                                   Propylene glycol methyl ether (40).
                                   Propylene glycol methyl ether acetate
                                    (34).
                                   Tall oil, crude (34).
                                   Toluene (32).
                                   Toluene diisocyanate (TDI) (12).
                                   White mineral oil (Carnation oil)
                                    (33).
Dodecyl and Tetradecylamine        Tall oil, fatty acid (34).
 mixture (7).
Ethylenediamine (7)..............  Butyl alcohol (20).
                                   tert-Butyl alcohol (20).
                                   Butylene glycol (20).
                                   Creosote (21).
                                   Diethylene glycol (40).
                                   Ethyl alcohol (20).
                                   Ethylene glycol (20).
                                   Ethyl hexanol (20).
                                   Fatty alcohols (C12-C14).
                                   Glycerine (20).
                                   Isononyl alcohol (20).
                                   Isophorone (18).
                                   Methyl butyl ketone (18).
                                   Methyl iso-butyl ketone (18).
                                   Methyl ethyl ketone (18).
                                   Propyl alcohol (20).
                                   Propylene glycol (20).
Lactic acid (0)..................  Acetic acid (4).
                                   Benzene (32).
                                   Ethanol (20).
                                   Polypropylene glycol (40).
                                   Vinyl acetate (13).
Oleum (0)........................  Hexane (31).
                                   Dichloromethane (36).
                                   Perchloroethylene (36).
1,2-Propylene glycol (20)........  Diethylenetriamine (7).
                                   Polyethylene polyamines (7).
                                   Triethylenetetramine (7).
Sodium cresylate as Cresylate      Methyl alcohol (20).
 spent caustic (5).
Sodium dichromate, 70% (0).......  Methyl alcohol (20).
Sodium dichromate, 69% (0).......  1-Hexene (30).
Sodium hydrogen sulfide solution   iso-Propyl alcohol (20).
 (5).
Sodium hydrosulfide solution (5).  Methyl alcohol (20).
                                   Iso-Propyl alcohol (20).
Sulfuric acid (2)................  Coconut oil (34).
                                   Coconut oil acid (34).
                                   Palm oil (34).
                                   Tallow (34).

[[Page 138]]

 
Sulfuric acid, 98% or less (2)...  Choice white grease tallow (34).
------------------------------------------------------------------------

    (b) The binary combinations listed below have been determined to be 
dangerously reactive, based on either data obtained in the literature or 
on laboratory testing which has been carried out in accordance with 
procedures prescribed in Appendix III. These combinations are exceptions 
to the Compatibility Chart (Figure 1) and may not be stowed in adjacent 
tanks.
    Acetone cyanohydrin (0) is not compatible with Groups 1-12, 16, 17 
and 22.
    Acrolein (19) is not compatible with Group 1, Non-Oxidizing Mineral 
Acids.
    Acrylic acid (4) is not compatible with Group 9, Aromatic Amines.
    Acrylonitrile (15) is not compatible with Group 5 (Caustics).
    Alkylbenzenesulfonic acid (0) is not compatible with Groups 1-3, 5-
9, 15, 16, 18, 19, 30, 34, 37, and strong oxidizers.
    Allyl alcohol (15) is not compatible with Group 12, Isocyanates.
    Alkyl (C7-C9) nitrates (34) is not compatible with Group 1, Non-
oxidizing Mineral Acids.
    Aluminum sulfate solution (43) is not compatible with Groups 5-11.
    Ammonium bisulfite solution (43) is not compatible with Groups 1, 3, 
4, and 5.
    Benzenesulfonyl chloride (0) is not compatible with Groups 5-7, and 
43.
    1,4-Butylene glycol (20) is not compatible with Caustic soda 
solution, 50% or less (5).
    gamma-Butyrolactone (0) is not compatible with Groups 1-9.
    C9 Resinfeed (DSM) (32) is not compatible with Group 2, Sulfuric 
acid.
    Carbon tetrachloride (36) is not compatible with 
Tetraethylenepentamine or Triethylenetetramine, both Group 7, Aliphatic 
amines.
    Catoxid feedstock (36) is not compatible with Group 1, 2, 3, 4, 5, 
or 12.
    Caustic soda solution, 50% or less (5) is not compatible with 1,4-
Butylene glycol (20).
    1-(4-Chlorophenyl)-4,4-dimethyl pentan-3-one (18) is not compatible 
with Group 5 (Caustics) or 10 (Amides).
    Crotonaldehyde (19) is not compatible with Group 1, Non-Oxidizing 
Mineral Acids.
    Cyclohexanone, Cyclohexanol mixture (18) is not compatible with 
Group 12, Isocyanates.
    2,4-Dichlorophenoxyacetic acid, Triisopropanolamine salt solution 
(43) is not compatible with Group 3, Nitric Acid.
    2,4-Dichlorophenoxyacetic acid, Dimethylamine salt solution (0) is 
not compatible with Groups 1-5, 11, 12, and 16.
    Diethylenetriamine (7) is not compatible with 1,2,3-
Trichloropropane, Group 36, Halogenated hydrocarbons.
    Dimethyl hydrogen phosphite (34) is not compatible with Groups 1 and 
4.
    Dimethyl naphthalene sulfonic acid, sodium salt solution (34) is not 
compatible with Group 12, Formaldehyde, and strong oxidizing agents.
    Dodecylbenzenesulfonic acid (0) is not compatible with oxidizing 
agents and Groups 1, 2, 3, 5, 6, 7, 8, 9, 15, 16, 18, 19, 30, 34, and 
37.
    Ethylenediamine (7) and Ethyleneamine EA 1302 (7) are not compatible 
with either Ethylene dichloride (36) or 1,2,3-Trichloropropane (36).
    Ethylene dichloride (36) is not compatible with Ethylenediamine (7) 
or Ethyleneamine EA 1302 (7).
    Ethylidene norbornene (30) is not compatible with Groups 1-3 and 5-
8.
    2-Ethyl-3-propylacrolein (19) is not compatible with Group 1, Non-
Oxidizing Mineral Acids.
    Ethyl tert-butyl ether (41) is not compatible with Group 1, Non-
oxidizing mineral acids.
    Fatty acids, essentially linear, C6-C18, 2-ethylhexyl ester (4) is 
not compatible with Group 3, Nitric acid.
    Ferric hydroxyethylethylenediamine triacetic acid, Sodium salt 
solution (43) is not compatible with Group 3, Nitric acid.
    Fish oil (34) is not compatible with Sulfuric acid (2).
    Formaldehyde (over 50%) in Methyl alcohol (over 30%) (19) is not 
compatible with Group 12, Isocyanates.
    Formic acid (4) is not compatible with Furfural alcohol (20).
    Furfuryl alcohol (20) is not compatible with Group 1, Non-Oxidizing 
Mineral Acids and Formic acid (4).
    1,6-Hexanediol distillation overheads (4) is not compatible with 
Group 3, Nitric acid, and Group 9, Aromatic amines.
    2-Hydroxyethyl acrylate (14) is not compatible with Group 5, 6, or 
12.
    Isophorone (18) is not compatible with Group 8, Alkanolamines.
    Lactic acid (0) is not compatible with Caustic soda solution.
    Magnesium chloride solution (0) is not compatible with Groups 2, 3, 
5, 6 and 12.
    Mesityl oxide (18) is not compatible with Group 8, Alkanolamines.
    Methacrylonitrile (15) is not compatible with Group 5 (Caustics).
    Methyl tert-butyl ether (41) is not compatible with Group 1, Non-
oxidizing Mineral Acids.

[[Page 139]]

    Nitroethane, 1-Nitropropane (each 15% or more) mixture (42) is not 
compatible with Group 7, Aliphatic amines, Group 8, Alkanol amines, and 
Group 9, Aromatic amines.
    Nitropropane (20%), nitroethane (80%) mixture (42) is not compatible 
with Group 7 (Aliphatic amines), Group 8 (Alkanol amines), and Group 9 
(Aromatic amines).
    NIAX POLYOL APP 240C (0) is not compatible with Groups 2, 3, 5, 7, 
or 12.
    o-Nitrophenol (0) is not compatible with Groups 2, 3, and 5-10.
    Octyl nitrates (all isomers), see Alkyl(C7-C9) nitrates.
    Oleum (0) is not compatible with Sulfuric acid (2) and 1,1,1-
Trichloroethane (36).
    Phthalate based polyester polyol (0) is not compatible with Groups 
2, 3, 5, 7 and 12.
    Polyglycerine, Sodium salts solution (20) is not compatible with 
Groups 1, 4, 11, 16, 17, 19, 21 and 22.
    Propylene, Propane, MAPP gas mixture (containing 12% or less MAPP 
gas) (30) is not compatible with Group 1 (Non-oxidizing mineral acids), 
Group 36 (Halogenated hydrocarbons), nitrogen dioxide, oxidizing 
materials, or molten sulfur.
    Sodium acetate, Glycol, Water mixture (1% or less Sodium hydroxide) 
(34) is not compatible with Group 12 (Isocyanates).
    Sodium chlorate solution (50% or less) (0) is not compatible with 
Groups 1-3, 5, 7, 8, 10, 12, 13, 17 and 20.
    Sodium dichromate solution (70% or less) (0) is not compatible with 
Groups 1-3, 5, 7, 8, 10, 12, 13, 17 and 20.
    Sodium dimethyl naphthalene sulfonate solution (34) is not 
compatible with Group 12, Formaldehyde and strong oxidizing agents.
    Sodium hydrogen sulfide, Sodium carbonate solution (0) is not 
compatible with Groups 6 (Ammonia) and 7 (Aliphatic amines).
    Sodium hydrosulfide (5) is not compatible with Groups 6 (Ammonia) 
and 7 (Aliphatic amines).
    Sodium hydrosulfide, Ammonium sulfide solution (5) is not compatible 
with Groups 6 (Ammonia) and 7 (Aliphatic amines).
    Sodium polyacrylate solution (43) is not compatible with Group 3, 
Nitric Acid.
    Sodium silicate solution (43) is not compatible with Group 3, Nitric 
Acid.
    Sodium sulfide, hydrosulfide solution (0) is not compatible with 
Groups 6 (Ammonia) and 7 (Aliphatic amines).
    Sodium thiocyanate (56% or less) (0) is not compatible with Groups 
1-4.
    Sulfonated polyacrylate solution (43) is not compatible with Group 5 
(Caustics).
    Sulfuric acid (2) is not compatible with Fish oil (34), or Oleum 
(0).
    Tall oil fatty acid (Resin acids less than 20%) (34) is not 
compatible with Group 5, Caustics.
    Tallow fatty acid (34) is not compatible with Group 5, Caustics.
    Tetraethylenepentamine (7) is not compatible with Carbon 
tetrachloride, Group 36, Halogenated hydrocarbons.
    1,2,3-Trichloropropane (36) is not compatible with 
Diethylenetriamine, Ethylenediamine, Ethyleaneamine EA 1302, or 
Triethylenetetramine, all Group 7, Aliphatic amines.
    1,1,1-Trichloroethane (36) is not compatible with Oleum (0).
    Trichloroethylene (36) is not compatible with Group 5, Caustics.
    Triethylenetetramine (7) is not compatible with Carbon 
tetrachloride, or 1,2,3-Trichloropropane, both Group 36, Halogenated 
hydrocarbons.
    Triethyl phosphite (34) is not compatible with Groups 1, and 4.
    Trimethyl phosphite (34) is not compatible with Groups 1 and 4.
    1,3,5-Trioxane (41) is not compatible with Group 1 (non-oxidizing 
mineral acids) and Group 4 (Organic acids).
    Vinyl neodecanoate (13) is not compatible with Group 5, Caustics.

[78 FR 50205, Aug. 16, 2013]



          Sec. Appendix II to Part 150--Explanation of Figure 1

    Definition of a hazardous reaction-- As a first approximation, a 
mixture of two cargoes is considered hazardous when, under specified 
condition, the temperature rise of the mixture exceeds 25  deg.C or a 
gas is evolved. It is possible for the reaction of two cargoes to 
produce a product that is significantly more flammable or toxic than the 
original cargoes even though the reaction is non-hazardous from 
temperature or pressure considerations, although no examples of such a 
reaction are known at this time.
    Chart format-- There are different degrees of reactivity among the 
various cargoes. Many of them are relatively non-reactive: For example, 
aromatic hydrocarbons or paraffins. Others will form hazardous 
combinations with many groups: For example, the inorganic acids.
    The cargo groups in the compatibility chart are separated into two 
categories: 1 through 22 are ``Reactive Groups'' and 30 through 43 are 
``Cargo Groups''. Left unassigned and available for future expansion are 
groups 23 through 29 and those past 43. Reactive Groups contain products 
which are chemically the most reactive; dangerous combinations may 
result between members of different Reactive Groups and between members 
of Reactive Groups and Cargo Groups. Products assigned to Cargo Groups, 
however, are much less reactive; dangerous combinations involving these 
can be formed only with members of certain Reactive Groups. Cargo Groups 
do not react hazardously with one another.

[[Page 140]]

    Using the Compatibility Chart-- The following procedure explains how 
the compatibility chart should be used to find compatibility 
information:
    (1) Determine the group numbers of the two cargoes by referring to 
the alphabetical listing of cargoes and the corresponding groups (Table 
I). Many cargoes are listed under their parent names; unless otherwise 
indicated, isomers or mixtures of isomers of a particular cargo are 
assigned to the same group. For example, to find the group number for 
Isobutyl Alcohol, look under the parent name Butyl Alcohol. Similarly, 
the group number for para-Xylene is found under the entry Xylene. If a 
cargo cannot be found in this listing, contact the Coast Guard for a 
group determination (see Sec. 150.140).
    (2) If both group numbers are between 30 and 43 inclusive, the 
products are compatible and the chart need not be used.
    (3) If both group numbers do not fall between 30 and 43 inclusive, 
locate one of the numbers on the left of the chart (Cargo Groups) and 
the other across the top (Reactive Groups). (Note that if a group number 
is between 30 and 43, it can only be found on the left side of the 
chart.) The box formed by the intersection of the column and row 
containing the two numbers will contain one of the following:
    (a) Blank--The two cargoes are compatible.
    (b) ``X''--The two cargoes are not compatible.

(Note that reactivity may vary among the group members. Refer to Table I 
or Table II to find whether the products in question are referenced by a 
footnote which indicates that exceptions exist and are listed in 
Appendix I. Unless the combination is specifically mentioned in Appendix 
I, it is compatible.)

                                Examples
------------------------------------------------------------------------
               Combination                Groups        Compatible
------------------------------------------------------------------------
Butyraldehyde/Acetic Acid...............    19/4  Yes.
Allyl Alcohol/Toluene Diisocyanate......   15/12  No.
Decene/Ethyl Benzene....................   30/32  Yes.
Ethanolamine/Acetone....................    8/18  Yes.
Ammonia/Dimethylformamide...............    6/10  No.
------------------------------------------------------------------------


[CGD 75-59, 45 FR 70263, Oct. 23, 1980, as amended by CGD 83-047, 50 FR 
33046, Aug. 16, 1985]



   Sec. Appendix III to Part 150--Testing Procedures for Determining 
                         Exceptions to the Chart

    experimental procedure for evaluating binary chemical reactivity

    General safety precautions--Chemical reactivity tests have, by their 
nature, serious potential for injuring the experimenter or destroying 
equipment. The experimenter should 1) have knowledge of the magnitude of 
the reactivity to be expected, 2) use adequate facilities and protective 
equipment to prevent injury from splatter of materials or release of 
fumes, and 3) start on a small scale so that unexpected reactions can be 
safely contained. All tests should be performed in a well-ventilated 
laboratory hood provided with shields.
    Testing chemicals other than liquids--The procedure outlined below 
was developed for chemicals which are liquids at ambient temperatures. 
If one or both chemicals are normally shipped at elevated temperatures, 
the same procedure may be followed except the chemicals are tested at 
their respective shipping temperatures and the oil bath in Step 3 is 
maintained at a level 25  deg.C above the higher temperature. This 
information is then indicated on the data sheet. If one of the chemicals 
is a gas at ambient temperatures, consult the Coast Guard for additional 
instructions before proceeding with the compatibility test.

                                 Step 1

    Objective--To determine if the test chemicals react violently and 
present a safety hazard in further tests.
    Procedure--Place 0.5ml of one (A) of the test chemicals in a 25  x  
150mm test tube. Clamp the test tube to a stand behind a safety shield 
(in a hood). Carefully add from a dropper 0.5ml of the other substance 
(B). Shake to induce mixing. If no immediate reaction occurs, retain the 
mixture for at least 10 minutes to check for a delayed reaction.
    Results--If a violent reaction occurs, such as sputtering, boiling 
of reactants or release of fumes, record the results on the Data Sheet 
(appendix IV) and do not proceed to Step 2. If no reaction or a minor 
reaction occurs, proceed to Step 2.

                                 Step 2

    Objective--To determine the heat of reaction of two chemicals on 
mixing under specified conditions.
    Procedure--These separate mixes of the proposed binary combination 
will be tested. These are 2 ml : 18 ml, 10 ml : 10 ml, and 18 ml : 2 ml, 
respectively, to result in a final mixture of about 20 ml in each case.
    A reference-junctioned thermocouple is prepared by inserting two 
lengths of 20 gauge or finer iron-constantan or chromelalumel duplex 
thermocouple wire into glass capilary sheaths. The common wire of each 
probe is joined, while the other wire of each is connected to a strip-
chart recorder. The thermocouple probe which produces a negative pen 
deflection upon warming is the reference junction and is placed in a 
test tube of water at ambient laboratory temperature. The other probe is 
placed near the bottom of a

[[Page 141]]

Dewar flask of about 300ml capacity, such that the thermocouple will be 
below the surface of the test mixture. The Dewar flask is equipped with 
a magnetic stirrer having a stirring bar coated with an inert material 
such as a fluorinated hydrocarbon.
    Start the temperature recorder and stirrer. Deliver the test 
chemicals to the Dewar Flask simultaneously from separate graduated 
syringes. If an exothermic reaction occurs, continue the test until the 
maximum temperature is reached and begins to subside. If no apparent 
reaction occurs, continue the test for at least 30 minutes to check for 
a delayed reaction. Stop agitation and observe the mixture at five-
minute intervals to determine if the mixture is miscible, if gases are 
evolved, or if other visible changes occur. In the interest of safety, a 
mirror can be used for these observations. Repeat the above test for the 
other mixture combinations.
    Results--Record the results in the appropriate places on the Data 
Sheet. If no reaction occurs or if the temperature rise is less than 25 
deg.C, proceed to Step 3. If the observed temperature rise exceeds 25 
deg.C or gases are evolved, do not proceed to Step 3.

                                 Step 3

    Objective--To determine if exothermic reactions occur at 
temperatures up to 50  deg.C.
    Procedure--If a non-hazardous reaction occurred in Step 2, the ratio 
of chemicals which resulted in the greatest temperature rise will be 
tested. Fresh chemicals will be used with a total volume for this test 
of about 10ml (a ratio of 1ml:9ml, 5ml:5ml, or 9ml:1ml). If no reaction 
was observed in Step 2, use a ratio of 5ml:5ml. Using the thermocouple 
prepared for Step 2, insert the reference probe into a 25  x  150mm test 
tube containing 10ml of water. Place the other probe into an empty test 
tube. Start the temperature recorder and add the two chemicals of the 
combination, one at a time, to the empty test tube. Lower the two test 
tubes into an oil bath maintained at 50 [2  deg.C. Hold the samples in 
the oil bath until the maximum temperature differential is recorded, and 
in all cases at least 15 minutes. Observe the test mixture to determine 
if gases are evolved or if other visible changes occur. Follow 
prescribed safety precautions.
    Results--Record the maximum differential temperature measured, the 
time required to reach this temperature, and any other observations in 
the proper space on the Data Sheet.
    Send a copy of the Data Sheet for each binary chemical mixture 
tested to: Commandant (CG-ENG-5), Attn: Hazardous Materials Division, 
U.S. Coast Guard Stop 7509, 2703 Martin Luther King Jr. Avenue SE., 
Washington, DC 20593-7509.

[CGD 75-59, 45 FR 70263, Oct. 23, 1980, as amended by CGD 82-063b, 48 FR 
4782, Feb. 3, 1983; CGD 83-047, 50 FR 33046, Aug. 16, 1985; CGD 88-070, 
53 FR 34535, Sept. 7, 19885; CGD 96-041, 61 FR 50731, Sept. 27, 1996; 
USCG-2012-0832, 77 FR 59783, Oct. 1, 2012; USCG-2013-0671, 78 FR 60155, 
Sept. 30, 2013; USCG-2014-0688, 79 FR 58284, Sept. 29, 2014]

[[Page 142]]



                Sec. Appendix IV to Part 150--Data Sheet
[GRAPHIC] [TIFF OMITTED] TC02FE91.080


[[Page 143]]


[GRAPHIC] [TIFF OMITTED] TC02FE91.081



PART 151_BARGES CARRYING BULK LIQUID HAZARDOUS MATERIAL CARGOES
--Table of Contents



                         Subpart 151.01_General

Sec.
151.01-1  Applicability.
151.01-2  Incorporation by reference.
151.01-3  [Reserved]
151.01-5  [Reserved]
151.01-10  Application of vessel inspection regulations.
151.01-15  Dangerous cargoes not specifically named.
151.01-20  Use of minimum requirements.
151.01-25  Existing barges.
151.01-30  Effective date.
151.01-35  Right of appeal.

                       Subpart 151.02_Equivalents

151.02-1  Conditions under which equivalents may be used.
151.02-5  Design of unmanned barges.

                       Subpart 151.03_Definitions

151.03-1  Definitions of terms.
151.03-3  Angle of downflooding.
151.03-5  Approved.
151.03-7  Barge.
151.03-9  Cargo.
151.03-11  Coastwise.
151.03-13  Cofferdam.
151.03-15  Commandant.
151.03-17  Compatible.
151.03-19  Environment.
151.03-21  Filling density.
151.03-23  Flame arrestor.
151.03-25  Flame screen.

[[Page 144]]

151.03-27  Gas free.
151.03-29  Great Lakes.
151.03-30  Hazardous material.
151.03-31  Headquarters.
151.03-33  Lakes, bays, and sounds.
151.03-35  Limiting draft.
151.03-36  Liquid.
151.03-37  Maximum allowable working pressure.
151.03-38  Nondestructive testing.
151.03-39  Ocean.
151.03-41  Officer in Charge, Marine Inspection (OCMI).
151.03-43  Pressure.
151.03-45  Rivers.
151.03-47  Service.
151.03-49  Sounding tube.
151.03-51  Tank barge.
151.03-53  Tankerman.
151.03-55  [Reserved]

               Subpart 151.04_Inspection and Certification

151.04-1  Certificate of inspection.
151.04-2  Inspection required.
151.04-3  Initial inspection.
151.04-5  Inspection for certification.
151.04-7  Nondestructive testing.

   Subpart 151.05_Summary of Minimum Requirements for Specific Cargoes

151.05-1  Explanation of column headings in Table 151.05.
151.05-2  Compliance with requirements for tank barges carrying benzene 
          and benzene containing cargoes, or butyl acrylate cargoes.

Table 151.05 to Subpart 151.05 of Part 151--Summary of Minimum 
          Requirements

           Subpart 151.10_Barge Hull Construction Requirements

151.10-1  Barge hull classifications.
151.10-5  Subdivision and stability.
151.10-15  Certificate endorsement.
151.10-20  Hull construction.

   Subpart 151.12_Equipment and Operating Requirements for Control of 
                  Pollution From Category D NLS Cargoes

151.12-5  Equipment for Category D NLS.
151.12-10  Operation of oceangoing non-self-propelled ships carrying 
          Category D NLS.

                    Subpart 151.13_Cargo Segregation

151.13-1  General.
151.13-5  Cargo segregation--tanks.

                          Subpart 151.15_Tanks

151.15-1  Tank types.
151.15-3  Construction.
151.15-5  Venting.
151.15-6  Venting piping.
151.15-10  Cargo gauging devices.

                      Subpart 151.20_Cargo Transfer

151.20-1  Piping--general.
151.20-5  Cargo system valving requirements.
151.20-10  Cargo system instrumentation.
151.20-15  Cargo hose if carried on the barge.
151.20-20  Cargo transfer methods.

                  Subpart 151.25_Environmental Control

151.25-1  Cargo tank.
151.25-2  Cargo handling space.

               Subpart 151.30_Portable Fire Extinguishers

151.30-1  Type.

      Subpart 151.40_Temperature or Pressure Control Installations

151.40-1  Definitions.
151.40-2  Materials.
151.40-5  Construction.
151.40-10  Operational requirements.
151.40-11  Refrigeration systems.

                        Subpart 151.45_Operations

151.45-1  General.
151.45-2  Special operating requirements.
151.45-3  Manning.
151.45-4  Cargo-handling.
151.45-5  Open hopper barges.
151.45-6  Maximum amount of cargo.
151.45-7  Shipping papers.
151.45-8  Illness, alcohol, drugs.
151.45-9  Signals.

                   Subpart 151.50_Special Requirements

151.50-1  General.
151.50-5  Cargoes having toxic properties.
151.50-6  Motor fuel antiknock compounds.
151.50-10  Alkylene oxides.
151.50-12  Ethylene oxide.
151.50-13  Propylene oxide.
151.50-20  Inorganic acids.
151.50-21  Sulfuric acid.
151.50-22  Hydrochloric acid.
151.50-23  Phosphoric acid.
151.50-30  Compressed gases.
151.50-31  Chlorine.
151.50-32  Ammonia, anhydrous.
151.50-34  Vinyl chloride (vinyl chloride monomer).
151.50-36  Argon or nitrogen.
151.50-40  Additional requirements for carbon disulfide (carbon 
          bisulfide) and ethyl ether.
151.50-41  Carbon disulfide (carbon bisulfide).
151.50-42  Ethyl ether.
151.50-50  Elemental phosphorus in water.
151.50-55  Sulfur (molten).

[[Page 145]]

151.50-60  Benzene.
151.50-70  Cargoes requiring inhibition or stabilization.
151.50-73  Chemical protective clothing.
151.50-74  Ethylidene norbornene.
151.50-75  Ferric chloride solution.
151.50-76  Hydrochloric acid, spent (NTE 15%).
151.50-77  Fluorosilicic acid (30% or less) (hydrofluorosilicic acid).
151.50-79  Methyl acetylene-propadiene mixture.
151.50-80  Nitric acid (70% or less).
151.50-81  Special operating requirements for heat sensitive cargoes.
151.50-84  Sulfur dioxide.
151.50-86  Alkyl (C7-C9) nitrates.

    Subpart 151.55_Special Requirements for Materials of Construction

151.55-1  General.

           Subpart 151.56_Prohibited Materials of Construction

151.56-1  Prohibited materials.

            Subpart 151.58_Required Materials of Construction

151.58-1  Required materials.

    Authority: 33 U.S.C. 1903; 46 U.S.C. 3703; Department of Homeland 
Security Delegation No. 0170.1.

    Source: CGFR 70-10, 35 FR 3714, Feb. 25, 1970, unless otherwise 
noted.

    Editorial Note: Nomenclature changes to part 151 appear by USCG-
2009-0702, 74 FR 49236, Sept. 25, 2009, and USCG-2012-0832, 77 FR 59784, 
Oct. 1, 2012.



                         Subpart 151.01_General



Sec. 151.01-1  Applicability.

    This part applies to the following:
    (a) Oceangoing, as defined in 33 CFR 151.05(j), non-self-propelled 
United States ships and non-self-propelled foreign ships operating in 
United States waters that carry a bulk cargo that is--
    (1) Listed in Table 151.05;
    (2) Not being carried in a portable tank regulated under subpart 
98.30 or 98.33 of this chapter; and
    (3) Not an NLS or is an NLS cargo that is a Category D listed in 
Sec. 151.12-5 of this part.
    (b) All non-self-propelled United States ships that are not 
oceangoing that carry a bulk cargo that is--
    (1) Listed in Table 151.05, and
    (2) Not being carried in a portable tank regulated under subpart 
98.30 or 98.33 of this chapter.

[CGD 81-101, 52 FR 7776, Mar. 12, 1987, as amended by CGD 84-043, 55 FR 
37413, Sept. 11, 1990]



Sec. 151.01-2  Incorporation by reference.

    (a) Certain standards and specifications are incorporated by 
reference into this part with the approval of the Director of the 
Federal Register in accordance with 5 U.S.C. 552(a). To enforce any 
edition other than the ones listed in paragraph (b) of this section, 
notice of change must be published in the Federal Register and the 
material made available to the public. All approved material is on file 
at the National Archives and Records Administration (NARA), and is 
available from the sources indicated in paragraph (b) of this section. 
For information on the availability of this material at NARA, call 202-
741-6030, or go to: http://www.archives.gov/federal_register/
code_of_federal_regulations/ibr_locations.html.
    (b) The standards and specifications approved for incorporation by 
reference in this part and the sections affected, are:

           American Society for Nondestructive Testing (ASNT)

4153 Arlingate Road, Caller 28518, Columbus, OH 43228-0518

ASNT ``Recommended Practice No. SNT-TC-1A (1988), Personnel 
Qualification and Certification in Nondestructive Testing'' 
                                                          151.04-7(c)(2)

      American Society of Mechanical Engineers (ASME) International

Three Park Avenue, New York, NY 10016-5990

ASME Boiler and Pressure Vessel Code Section V, Nondestructive 
Examination (1986)........................................151.04-7(a)(1)

            American Society for Testing and Materials (ASTM)

100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.

ASTM D 4986-98, Standard Test Method for Horizontal Burning 
Characteristics of Cellular Polymeric Materials.................151.15-3
ASTM E 84-98, Standard Test Method

[[Page 146]]

for Surface Burning Characteristics of Building Materials--151.15-3

[CGD 85-061, 54 FR 50965, Dec. 11, 1989, as amended by USCG-1999-6216, 
64 FR 53227, Oct. 1, 1999; USCG-1999-5151, 64 FR 67183, Dec. 1, 1999; 69 
FR 18803, Apr. 9, 2004]



Sec. 151.01-3  [Reserved]



Sec. 151.01-5  [Reserved]



Sec. 151.01-10  Application of vessel inspection regulations.

    (a) The regulations in this part are requirements which may be in 
addition to, supplement, or modify requirements in other subchapters in 
this chapter. When a specific requirement in another part or section in 
another subchapter in this chapter is in conflict with or contrary to 
requirement or intent expressed in this part, the regulations in this 
part shall take precedence.
    (b) Every unmanned tank barge which carries or is intended to carry 
in bulk any liquid or liquefied gas listed in Table 151.05 and has 
flammability or combustibility characteristics as indicated by a fire 
protection requirement in Table 151.05 shall be inspected and 
certificated under the provisions in subchapter D (Tank Vessels) of this 
chapter and the regulations in this part.
    (c) Every unmanned tank barge prior to the carriage in bulk of any 
liquid or liquefied gas listed in Table 151.05 which does not have the 
flammability or combustibility characteristics as indicated by the fire 
protection requirement in Table 151.05 shall be inspected and 
certificated under the applicable provisions of subchapter D or 
subchapter I of this chapter, at the option of the barge owner, in 
addition to the regulations in this part. However, unless the barge 
owner notifies the Officer in Charge, Marine Inspection of his option to 
have the barge inspected and certificated under subchapter I at the time 
he submits the application for inspection (Form CG-3752), the unmanned 
tank barge shall be inspected and certificated under the provisions of 
subchapter D of this chapter and the regulations in this part.
    (c-1) Each unmanned tank barge constructed on or after September 6, 
1977, that carries in bulk a cargo listed in Table 151.05 and that is 
certificated under subchapter I of this chapter must meet the loading 
information requirements in Sec. 31.10-32 of this chapter.
    (d) The provisions of subchapter D of this chapter shall apply to 
all unmanned tank barges which carry in bulk any of the liquids or 
liquefied gases listed in Table 30.25-1 of this chapter. The provisions 
of this part shall not apply to such barges unless it is also desired to 
carry one or more of the liquids or liquefied gases listed in Table 
151.05.
    (e) Manned barges which carry or intend to carry in bulk the cargoes 
specified in Table 151.05 will be considered individually by the 
Commandant and may be required to meet the requirements of this 
subchapter and of subchapter D (Tank Vessels) or I (Cargo and 
Miscellaneous Vessels) of this chapter as applicable.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970]

    Editorial Note: For Federal Register citations affecting 
Sec. 151.01-10, see the List of CFR Sections Affected, which appears in 
the Finding Aids section of the printed volume and at www.fdsys.gov.



Sec. 151.01-15  Dangerous cargoes not specifically named.

    (a) Any liquid or liquefied gas, which meets the definitions 
referred to in Sec. 151.01-1 and is not named in Table 151.05 or Table 
30.25-1 of this chapter shall not be transported in bulk in a manned or 
unmanned tank barge without the prior specific approval of the 
Commandant.
    (b) Mixtures or blends of two or more cargoes, one or more of which 
appears in Table 151.05, will be treated as though they were new 
products and specific approval of the Commandant must be obtained prior 
to undertaking their transportation.

[CGFR-70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 81-101, 52 FR 
7777, Mar. 12, 1987; CGD 81-101, 53 FR 28974, Aug. 1, 1988 and 54 FR 
12629, Mar. 28, 1989; CGD 88-100, 54 FR 40029, Sept. 29, 1989]



Sec. 151.01-20  Use of minimum requirements.

    (a) The minimum requirements governing transportation of any liquid 
or liquefied gas listed in Table 151.05 are

[[Page 147]]

set forth in this part when such substances are carried in bulk in 
unmanned tank barges.
    (b) Before any liquid or liquefied gas listed in Table 151.05 may be 
carried in an unmanned tank barge, the certificate of inspection issued 
to such barge shall be appropriately endorsed to show approval to 
transport such cargo.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-100, 54 FR 
40029, Sept. 29, 1989]



Sec. 151.01-25  Existing barges.

    (a) Except as provided in paragraph (c) of this section, barges 
certified for, or used within the previous 2 years prior to the 
effective date of this regulation, or barges equivalent to such barges, 
for the transportation of any cargo regulated by this subchapter which 
do not meet the specific requirements herein, may be continued in 
service subject to the following conditions:
    (1) Venting, gauging, and all operating requirements shall be met 
within a 1-year period subsequent to the effective date.
    (2) All other requirements shall be met within a 2-year period 
subsequent to the effective date.
    (b) If an existing barge, which has been designed to carry or has 
regularly been carrying one or more of the cargoes regulated by this 
subchapter, is found to be so arranged, or outfitted that conversion to 
bring it into compliance with any or all of the requirements of this 
subchapter is impractical or impossible, the Commandant, upon 
application, may review the plans of the barge to determine if it is 
suitable and safe for the cargoes to be transported.
    (c) Except for operating and vinyl chloride requirements, barges 
constructed and certificated for the transportation of any cargo for 
which specific regulations existed, in parts 36, 38, 39, 40, and 98 of 
this chapter at the time of their construction or conversion, may 
continue and will be certificated to operate without the requirement 
that they comply with the provisions of subchapter O of this chapter.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 74-167k, 40 FR 
17026, Apr. 16, 1975]



Sec. 151.01-30  Effective date.

    (a) The regulations in this subchapter are effective on and after 
June 1, 1970. However, amendments, revisions, or additions shall become 
effective ninety (90) days after the date of publication in the Federal 
Register unless the Commandant shall fix a different time.
    (b) The regulations in this subchapter are not retroactive in effect 
unless specifically made so at the time the regulations are issued. 
Changes in specification requirements of articles of equipment, or 
materials used in construction of tank barges, shall not apply to such 
items which have been passed as satisfactory until replacement shall 
become necessary, unless a specific finding is made that such equipment 
or materials used is unsafe or hazardous and has to be removed from tank 
barges.



Sec. 151.01-35  Right of appeal.

    Any person directly affected by a decision or action taken under 
this part, by or on behalf of the Coast Guard, may appeal therefrom in 
accordance with subpart 1.03 of this chapter.

[CGD 88-033, 54 FR 50381, Dec. 6, 1989]



                       Subpart 151.02_Equivalents



Sec. 151.02-1  Conditions under which equivalents may be used.

    (a) Where in this part it is provided that a particular fitting, 
material, appliance, apparatus, or equipment, or type thereof, shall be 
fitted or carried in a vessel, or that any particular provision shall be 
made or arrangement including cargo segregation shall be adopted, the 
Commandant may accept in substitution therefor any other fitting, 
material, apparatus or equipment, or type thereof, or any other 
provision or arrangement. However, the Commandant shall be satisfied by 
suitable evidence that the fitting, material, appliance, apparatus, or 
equipment, or the type thereof, or the provision or arrangement shall be 
at least as effective as that specified in this part.
    (b) In any case where it is shown to the satisfaction of the 
Commandant that the use of any particular equipment, apparatus, or 
arrangement not

[[Page 148]]

specifically required by law is unreasonable or impracticable, the 
Commandant may permit the use of alternate equipment apparatus, or 
arrangement to such an extent and upon such conditions as will insure, 
to his satisfaction, a degree of safety consistent with the minimum 
standards set forth in this part.



Sec. 151.02-5  Design of unmanned barges.

    (a) In order not to inhibit design and application, the Commandant 
may approve vessels of novel design, both new and for conversion, after 
it is shown to his satisfaction that such a vessel is at least as safe 
as any vessel which meets the standards required by this part.
    (b) [Reserved]



                       Subpart 151.03_Definitions



Sec. 151.03-1  Definitions of terms.

    Certain terms used in the regulations in this subchapter are defined 
in this subpart.



Sec. 151.03-3  Angle of downflooding.

    The angle of heel of the vessel at which any opening in the hull not 
provided with a water tight closure would be immersed.



Sec. 151.03-5  Approved.

    This term means approved by the Commandant unless otherwise stated.



Sec. 151.03-7  Barge.

    This term means any non-self-propelled vessel designed to carry 
cargo.



Sec. 151.03-9  Cargo.

    This term means any liquid, gas or solid having one or more of the 
dangerous properties defined in this subchapter.



Sec. 151.03-11  Coastwise.

    This designation refers to all vessels normally navigating the 
waters of any ocean or the Gulf of Mexico 20 nautical miles or less 
offshore.



Sec. 151.03-13  Cofferdam.

    This term means a void or empty space separating two or more 
compartments for the purpose of isolation or to prevent the contents of 
one compartment from entering another in the event of the failure of the 
walls of one to retain their tightness.



Sec. 151.03-15  Commandant.

    This term means Commandant of the U.S. Coast Guard.



Sec. 151.03-17  Compatible.

    Compatible means that a cargo will not react in an unsafe manner 
with other cargo or materials used in construction of the barge. The 
prime considerations are the chemical, physical, or thermal properties 
of the reaction including heat, pressure, toxicity, stability, and 
explosive nature of the reaction and its end products.



Sec. 151.03-19  Environment.

    This term refers to the atmosphere within a cargo tank and the 
spaces adjacent to the tank or spaces in which cargo is handled.



Sec. 151.03-21  Filling density.

    The ratio, expressed as a percentage, of the weight of cargo that 
may be loaded into a tank compared to the weight of water that the tank 
will hold at 60  deg.F. The weight of a gallon of water at 60  deg.F in 
air shall be 8.32828 pounds.



Sec. 151.03-23  Flame arrestor.

    Any device or assembly of cellular, tubular, pressure or other type 
used for preventing the passage of flames into enclosed spaces.



Sec. 151.03-25  Flame screen.

    A fitted single screen of corrosion-resistant wire of at least 30 by 
30 mesh or two fitted screens, both of corrosion-resistant wire, of at 
least 20 by 20 mesh spaced not less than one-half inch or more than 1\1/
2\ inches apart.



Sec. 151.03-27  Gas free.

    Free from dangerous concentrations of flammable or toxic gases.



Sec. 151.03-29  Great Lakes.

    A designation for all vessels in Great Lakes service.

[[Page 149]]



Sec. 151.03-30  Hazardous material.

    In this part hazardous material means a liquid material or substance 
that is--
    (a) Flammable or combustible;
    (b) Designated a hazardous substance under section 311(b) of the 
Federal Water Pollution Control Act (33 U.S.C. 1321); or
    (c) Designated a hazardous material under 49 U.S.C. 5103.

    Note: The Environmental Protection Agency designates hazardous 
substances in 40 CFR Table 116.4A. The Coast Guard designates hazardous 
materials that are transported as bulk liquids by water in Sec. 153.40.

[CGD 81-101, 52 FR 7777, Mar. 12, 1987, as amended by CGD 95-028, 62 FR 
51209, Sept. 30, 1997]



Sec. 151.03-31  Headquarters.

    Commandant (CG-5P), Attn: Assistant Commandant for Prevention, U.S. 
Coast Guard Stop 7501, 2703 Martin Luther King Jr. Avenue SE., 
Washington, DC 20593-7501

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-070, 53 FR 
34535, Sept. 7, 1988; USCG-2013-0671, 78 FR 60155, Sept. 30, 2013]



Sec. 151.03-33  Lakes, bays, and sounds.

    A designation for all vessels navigating the waters of any of the 
lakes, bays, or sounds other than the waters of the Great Lakes.



Sec. 151.03-35  Limiting draft.

    Maximum allowable draft to which a barge may be loaded. Limiting 
draft is a function of hull type and cargo specific gravity. A barge may 
be assigned different limiting drafts for different hull types or within 
one hull type for different specific gravities.



Sec. 151.03-36  Liquid.

    In this part liquid includes liquefied and compressed gases.

[CGD 81-101, 52 FR 7777, Mar. 12, 1987]



Sec. 151.03-37  Maximum allowable working pressure.

    The maximum allowable working pressure shall be as defined in 
section VIII of the ASME Boiler and Pressure Vessel Code.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 85-061, 54 FR 
50965, Dec. 11, 1989]



Sec. 151.03-38  Nondestructive testing.

    Nondestructive testing includes ultrasonic examination, liquid 
penetrant examination, magnetic particle examination, radiographic 
examination, eddy current, and acoustic emission.

[CGD 85-061, 54 FR 50965, Dec. 11, 1989]



Sec. 151.03-39  Ocean.

    A designation for all vessels normally navigating the waters of any 
ocean or the Gulf of Mexico more than 20 nautical miles offshore.



Sec. 151.03-41  Officer in Charge, Marine Inspection (OCMI).

    This term means any person from the civilian or military branch of 
the Coast Guard designated as such by the Commandant and who, under the 
superintendence and direction of the Coast Guard District Commander, is 
in charge of an inspection zone for the performance of duties with 
respect to the enforcement and administration of Subtitle II of Title 
46, U.S. Code, Title 46 and Title 33 U.S. Code, and regulations issued 
under these statutes.

[CGD 95-028, 62 FR 51209, Sept. 30, 1997]



Sec. 151.03-43  Pressure.

    Terminology used in this part are: pounds per square inch gauge 
(p.s.i.g.) or pounds per square inch absolute (p.s.i.a.). 14.7 p.s.i.a. 
is equal to 0 p.s.i.g. P.s.i.g. is normally used in reference to design 
or operating requirements.



Sec. 151.03-45  Rivers.

    A designation for all vessels whose navigation is restricted to 
rivers and/or canals, exclusively.



Sec. 151.03-47  Service.

    The waters upon which a vessel may be operated as endorsed upon the 
certificate of inspection.

[[Page 150]]



Sec. 151.03-49  Sounding tube.

    This is an unperforated tube fitted to an ullage hole, secured so as 
to be vapor tight to the underside of the tank top open at the bottom, 
and extending to within 18 inches or less of the bottom of the tank.



Sec. 151.03-51  Tank barge.

    A non-self-propelled vessel especially constructed or converted to 
carry bulk liquid cargo in tanks.



Sec. 151.03-53  Tankerman.

    The following ratings are established in part 13 of this chapter. 
The terms for the ratings identify persons holding valid merchant 
mariner credentials or merchant mariners' documents for service in the 
ratings issued under that part:
    (a) Tankerman-PIC.
    (b) Tankerman-PIC (Barge).
    (c) Restricted Tankerman-PIC.
    (d) Restricted Tankerman-PIC (Barge).
    (e) Tankerman-Assistant.
    (f) Tankerman-Engineer.

[CGD 79-116, 60 FR 17157, Apr. 4, 1995, as amended by USCG-2006-24371, 
74 FR 11266, Mar. 16, 2009]



Secs. 151.03-55  [Reserved]



               Subpart 151.04_Inspection and Certification



Sec. 151.04-1  Certificate of inspection.

    (a) A certificate of inspection is required for every unmanned tank 
barge subject to the requirements in this subchapter. A certificate of 
inspection shall be issued to the barge or to its owners by the Officer 
in Charge, Marine Inspection, if the barge is found to comply with 
applicable inspection laws and the regulations in this chapter.
    (b) The certificate of inspection shall be endorsed with respect to 
the waters over which the barge may be operated.
    (c) The certificate shall be endorsed describing the cargoes by name 
as given in Table 151.05 or as specifically approved by the Commandant. 
No other dangerous cargo as defined in Subpart 151.01-1 shall be 
carried. Certificates shall specify maximum cargo weight (short tons), 
maximum density (pounds per gallon) and any operating limitations and a 
limiting draft.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-100, 54 FR 
40029, Sept. 29, 1989]



Sec. 151.04-2  Inspection required.

    (a) Every unmanned tank barge subject to the regulations in this 
subchapter shall be inspected every five years. More frequent 
inspections may be required, if necessary, by the Officer in Charge, 
Marine Inspection, to see that the hull, equipment and appliances of the 
vessel comply with the marine inspection laws, and the regulations of 
this subchapter and other subchapters where applicable.
    (b) [Reserved]

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by USCG-2007-29018, 
72 FR 53967, Sept. 21, 2007]



Sec. 151.04-3  Initial inspection.

    (a) The initial inspection which may consist of a series of 
inspections during the construction of an unmanned barge shall include a 
complete inspection of the structure, auxiliary machinery, and 
equipment. The inspection shall be such as to insure that the 
arrangement, materials, and scantlings of the hull structure, tanks and 
pressure vessels and their appurtenances comply with applicable 
regulations of this chapter and with the requirements of this part.
    (b) [Reserved]



Sec. 151.04-5  Inspection for certification.

    (a) An inspection for certification is a prerequisite of the 
reissuance of a Certificate of Inspection as provided for in applicable 
regulations of this chapter.
    (b) Unless otherwise specified in table 151.05, cargo tanks are 
internally examined as follows:
    (1) Where the cargo tank is of the gravity type and the structural 
framing is on the internal tank surface, the tank shall be inspected 
internally at the time of inspection for certification.
    (2) Where the cargo tank is of the gravity type and the structural 
framing is on the external tank surface accessible for examination from 
voids, cofferdams, double bottoms, and other

[[Page 151]]

similar spaces, tanks shall be inspected internally at 4-year intervals.
    (3) If the tank is a pressure-vessel type cargo tank, an internal 
inspection of the tank is conducted within--
    (i) Ten years after the last internal inspection on an unmanned 
barge carrying cargo at temperatures of -67  deg.F (-55  deg.C) or 
warmer; or
    (ii) Eight years after the last internal inspection if the tank is a 
pressure type cargo tank carrying cargo at temperatures colder than -67 
deg.F (-55  deg.C).
    (4) Internal inspection may be required at more frequent intervals 
as deemed necessary by the Officer in Charge, Marine Inspection.
    (c) An external examination of unlagged tanks and the visible parts 
of lagged tanks is made at each biennial inspection. If the vessel has 
single skin construction, the underwater portion of the tank need not be 
examined unless deemed necessary by the Officer in Charge, Marine 
Inspection. If an external examination of the tank is not possible 
because of insulation, the owner shall ensure that--
    (1) The amount of insulation deemed necessary by the marine 
inspector is removed during each cargo tank internal inspection to allow 
spot external examination of the tanks and insulation; or
    (2) The thickness of the tanks is gauged by a nondestructive means 
accepted by the marine inspector without the removal of insulation.
    (d) If required by the Officer in Charge, Marine Inspection the 
owner shall conduct nondestructive testing of each tank designated by 
the Officer in Charge, Marine Inspection in accordance with Sec. 151.04-
7.
    (e) If the Officer in Charge, Marine Inspection considers a 
hydrostatic test necessary to determine the condition of the tanks, the 
owner shall perform the test at a pressure of 1\1/2\ times the tank's--
    (1) Maximum allowable pressure, as determined by the safety relief 
valve setting; or
    (2) Design pressure, when cargo tanks operate at maximum allowable 
pressures reduced below the design pressure in order to satisfy special 
mechanical stress relief requirements.

    Note: See the ASME Code, Section VIII, Appendix 3 for information on 
design pressure.

    (f) Quick closing valves shall be tested by operating the emergency 
shutoff system from each operating point at the time of each vessel's 
inspection for certification.
    (g) Excess flow valves shall be inspected at the time of inspection 
for certification. The Officer in Charge, Marine Inspection, shall 
satisfy himself that the valve is in working condition by visual 
inspection, and if this is impossible, by one of the following means:
    (1) Removing the valve and bench testing ashore; the valve shall 
close at or below its rated closing flow.
    (2) By any other means acceptable to the Officer in Charge, Marine 
Inspection, which will demonstrate that the valve is operable.
    (h) Pressure vacuum relief valves shall be examined to determine 
that the operating mechanism is free and capable of activation.
    (i) Safety relief valves shall be tested by bench testing or other 
suitable means. The valves shall relieve and reseat within the design 
tolerances of the set pressure, or it shall be removed and reset prior 
to being returned to service. This test shall be conducted at the time 
of the inspection for certification.
    (j) Cargo hose stored on board the vessel which is used in 
transferring cargoes listed in Table 151.05 shall be inspected every 2 
years. This inspection shall consist of a visual examination and a 
hydrostatic test of 1\1/2\ times the maximum pressure to which the hose 
will be subjected in service. The date of the most recent inspection and 
the test pressure shall be stenciled or otherwise marked on the hose.
    (k) Cargo piping shall be inspected and tested at the same time as 
the cargo tanks.
    (l) If the tank is a pressure vessel type cargo tank with an 
internal inspection interval of 10 years, and is 30 years old or older, 
determined from the date it was built, the owner shall conduct 
nondestructive testing of each

[[Page 152]]

tank in accordance with Sec. 151.04-7, during each internal inspection.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-100, 54 FR 
40029, Sept. 29, 1989; CGD 85-061, 54 FR 50965, Dec. 11, 1989; USCG-
2014-0688, 79 FR 58284, Sept. 29, 2014]



Sec. 151.04-7  Nondestructive testing.

    (a) Before nondestructive testing may be conducted to meet 
Sec. 151.04-5 (d) and (l), the owner shall submit a proposal to the 
Officer in Charge, Marine Inspection that includes--
    (1) The test methods and procedures to be used all of which must 
meet section V of the ASME Boiler and Pressure Vessel Code (1986);
    (2) Each location on the tank to be tested; and
    (3) The test method and procedure to be conducted at each location 
on the tank.
    (b) If the Officer in Charge, Marine Inspection rejects the 
proposal, the Officer in Charge, Marine Inspection informs the owner of 
the reasons why the proposal is rejected.
    (c) If the Officer in Charge, Marine Inspection accepts the 
proposal, then the owner shall ensure that--
    (1) The proposal is followed; and
    (2) Nondestructive testing is performed by personnel meeting ASNT 
``Recommended Practice No. SNT-TC-1A (1988), Personnel Qualification and 
Certification in Nondestructive Testing.''
    (d) Within 30 days after completing the nondestructive test, the 
owner shall submit a written report of the results to the Officer in 
Charge, Marine Inspection.

[CGD 85-061, 54 FR 50966, Dec. 11, 1989]



   Subpart 151.05_Summary of Minimum Requirements for Specific Cargoes



Sec. 151.05-1  Explanation of column headings in Table 151.05.

    (a) Cargo identification/name. This column identifies cargoes by 
name. Words in italics are not part of the cargo name but may be used in 
addition to the cargo name. When one entry references another entry by 
use of the word ``see'' and both names are in roman type, either name 
may be used as the cargo name (e.g., ``Diethyl either see Ethyl 
ether''). However, the referenced entry is preferred.
    (b) Cargo identification/pressure. This column identifies cargo in 
terms of pressure within the tank. Terms used are:
    (1) Pressurized. Cargo carried at a pressure in excess of 10 pounds 
per square inch gauge as measured at the top of the tank (i.e., 
exclusive of static head).
    (2) Atmospheric pressure. Cargo carried at not more than 10 pounds 
per square inch gauge, exclusive of static head.
    (c) Cargo identification/temperature. This column identifies the 
cargo by the temperature of the cargo during transit.
    (1) Ambient temperature. Cargo which is carried at naturally 
occurring temperatures.
    (2) Low temperature. Cargo carried below ambient temperatures when 
the product temperature is below 0  deg.F.
    (3) Elevated temperature. Cargo carried above ambient temperatures.
    (d) Hull type. This column refers to the flotation features of the 
barge. Terms used are explained and defined in Subpart 151.10 of this 
part.
    (e) Cargo segregation/tanks. This column refers to the separation of 
the cargo from its surroundings. Terms are explained in Sec. 151.13-5 
and in footnotes to Table 151.05 of this part.
    (f) Tanks/type. This column refers to the design requirements for 
cargo tanks and their placement within the hull of the vessel. Terms are 
explained in Sec. 151.15-1.
    (g) Tanks/venting. This column refers to arrangements for preventing 
excess pressure or vacuum within the cargo tank. Terms used are 
explained and defined in Sec. 151.15-5.
    (h) Tanks/gauging devices. This column refers to arrangements 
provided for determining the amount of cargo present in cargo tanks. 
Terms used are explained and defined in Sec. 151.15-10.
    (i) Cargo transfer/piping. This column refers to the classification 
of piping in accordance with Subchapter F of this chapter as discussed 
in Sec. 151.20-1.
    (j) Cargo transfer/control. This column refers to the valving 
requirements for the cargo piping system. These requirements are defined 
in Sec. 151.20-5.

[[Page 153]]

    (k) Environmental control/cargo tanks. This column refers to control 
of the composition of the environment within cargo tanks. Definitions 
and detailed requirements are given in Sec. 151.25-1.
    (l) Environmental control/cargo handling space. This column refers 
to control of the environment in the cargo handling spaces. Definitions 
and detailed requirements are found in Sec. 151.25-2.
    (m) Fire protection. This column specifies whether portable fire 
extinguishers are required on barges carrying the cargo named. 
Requirements for cargoes requiring extinguishers are given in Subpart 
151.30 of this part.
    (n) Special requirements. This column refers to requirements in 
subparts 151.40, 151.50, 151.55, 151.56, and 151.58 of this part which 
apply to specific cargoes. The section numbers listed omit the preceding 
part designation, ``151''.
    (o) Electrical hazard class--group. This column lists the electrical 
hazard class and group used for the cargo when determining requirements 
for electrical equipment under subchapter J (Electrical engineering) of 
this chapter.
    (p) Temperature control installations. This column refers to systems 
which are used to control the temperature of the cargo. Definitions and 
requirements which are applicable if such systems are used are given in 
Subpart 151.40 of this part.
    (q) Tank inspection period. This column refers to the maximum period 
in years between internal cargo tank inspections. Applicable 
requirements are given in Sec. 151.04-5.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970; 35 FR 6431, Apr. 22, 1970, as 
amended by CGD 74-275, 40 FR 21958, May 20, 1975; CGD 88-100, 54 FR 
40029, Sept. 29, 19895; CGD 96-041, 61 FR 50731, Sept. 27, 1996; USCG-
2000-7079, 65 FR 67183, Nov. 8, 2000]



Sec. 151.05-2  Compliance with requirements for tank barges carrying
benzene and benzene containing cargoes, or butyl acrylate cargoes.

    A tank barge certificated to carry benzene and benzene containing 
cargoes or butyl acrylate cargoes must comply with the gauging 
requirement of Table 151.05 of this part by August 15, 1998. Until that 
date, a tank barge certificated to carry benzene and benzene containing 
cargoes must meet either the gauging requirement of Table 151.05 or the 
restricted or closed gauging requirements in effect on September 29, 
1994; and a tank barge certificated to carry butyl acrylate cargoes must 
meet either the gauging requirements of Table 151.05 or comply with the 
open, restricted, or closed gauging requirements in effect on September 
29, 1994.

[CGD 95-900, 60 FR 34050, June 29, 1995]

[[Page 154]]

     Table 151.05 to Subpart 151.05 of Part 151--Summary of Minimum 
                              Requirements

----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
                Cargo identification\1\                                                       Tanks                      Cargo transfer      Environmental
--------------------------------------------------------           Cargo  ---------------------------------------------------------------       control                                              Electrical
                                                          Hull    segre-                                                                 ---------------------    Fire      Special requirements in    hazard      Temp.   Tank internal
                                                          type    gation                                       Gauging   Piping                       Cargo    protection       46 CFR Part 151       class and   control     inspect.
              Cargo name                Pressure  Temp.            tank              Type              Vent    device    class   Control    Cargo    handling   required                                group    install.  period--years
                                                                                                                                            tanks     space
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
a.                                            b.     c.      d.     e.     f.......................       g.        h.       i.       j.        k.         l.         m.   n.......................          o.        p.          q.
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Acetaldehyde..........................    Press.   Amb.      II       1NA  Ind. Pressure...........       SR    Restr.       II      P-1     Inert     Vent F        Yes   .55-1(h)................         I-C        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Acetic acid...........................    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .50-73..................         I-D        NA           G
                                                                    2 i i                                                                                                  .55-1(g)................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Acetic anhydride......................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .50-73..................         I-D        NA           G
                                                                    2 i i                                                                                                  .55-1(g)................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Acetone cyanohydrin...................    Atmos.   Amb.       I     1 i i  Integral Gravity........       PV    Closed        I      G-1        NR     Vent F        Yes   .50-5...................         I-D        NA           G
                                                                      2 i                                                                                                  .50-70(b)...............
                                                                                                                                                                           .50-73..................
                                                                                                                                                                           .50-81..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Acetonitrile..........................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   No......................         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Acrylic acid..........................    Atmos.   Amb.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .50-70(a)...............         I-D        NA           G
                                                                    2 i i                                                                                                  .50-73..................
                                                                                                                                                                           .50-81..................
                                                                                                                                                                           .58-1(a)................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Acrylonitrile.........................    Atmos.   Amb.      II     1 i i  Integral Gravity........       PV    Closed       II      G-1        NR     Vent F        Yes   .55-1(e)................         I-D        NA           G
                                                                    2 i i                                                                                                  .50-70(a)...............
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Adiponitrile..........................    Atmos.   Amb.      II     1 i i  Integral Gravity........       PV      Open       II      G-1        NR     Vent F        Yes   No......................         I-D        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Alkylbenzenesulfonic acid (greater        Atmos.  Elev.     III     1 i i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .50-73..................         I-B        NA           G
 than 4%).                                                          2 i i                                                                                                  .58-1(e)................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Alkyl(C7-C9) nitrates.................    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .50-81..................          NA        NA           G
                                                                    2 i i                                                                                                  .50-86..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Allyl alcohol.........................    Atmos.   Amb.       I     1 i i  Integral Gravity........       PV    Closed        I      G-1        NR     Vent F        Yes   .50-5...................         I-C        NA           G
                                                                    2 i i                                                                                                  .50-73..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

[[Page 155]]

 
Allyl chloride........................    Atmos.   Amb.       I     1 i i  Integral Gravity........       PV    Closed        I      G-1        NR     Vent F        Yes   .50-5...................         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Aluminum sulfate solution.............    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .58-1(e)................          NA        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Aminoethylethanolamine................    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .55-1(b)................          NA        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Ammonia, anhydrous....................    Press.   Amb.      II       1NA  Ind. Pressure...........    SR250    Restr.       II      P-2        NR     Vent F         No   .50-30..................         I-D        NA           G
                                                                    2 i i                             p.s.i.                                                               .50-32..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Ammonia, anhydrous....................    Atmos.    Low      II       1NA  Ind. Gravity............       PV    Restr.     II-L      G-2        NR     Vent F         No   .50-30..................         I-D      .40-           8
                                                                    2 i i                                                                                                  .50-32..................               1(b)(1)
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Ammonium bisulfite solution (70% or       Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N         No   .50-73..................          NA        NA           G
 less).                                                               2 i                                                                                                  .56-1(a), (b), (c)......
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Ammonium hydroxide (28% or less NH 3).    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F         No   .56-1(a), (b), (c), (f),         I-D        NA           G
                                                                      2 i                                                                                                   (g).
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Aniline...............................    Atmos.   Amb.       I     1 i i  Integral Gravity........       PV    Closed        I      G-1        NR     Vent F        Yes   .50-5...................         I-D        NA           G
                                                                    2 i i                                                                                                  .50-73..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Anthracene oil (Coal tar fraction)....    Atmos.   Amb.      II     1 i i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   No......................         I-D        NA           G
                                                  Elev.             2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Argon, liquefied......................    Press.    Low     III       1NA  Ind. Pressure...........       SR    Restr.     II-L      P-1        NR     Vent F         No   .40-1(a)................          NA  .40-1(a)           G
                                                                      2 i                                                                                                  .50-30..................
                                                                                                                                                                           .50-36..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Benzene...............................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Closed       II      G-1        NR     Vent F        Yes   .50-60..................         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Benzene hydrocarbon mixtures              Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Closed       II      G-1        NR     Vent F        Yes   .50-60..................         I-D        NA           G
 (containing Acetylenes) (having 10%                                2 i i                                                                                                  .56-1(b), (d), (f), (g),
 Benzene or more).
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Benzene hydrocarbon mixtures (having      Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Closed       II      G-1        NR     Vent F        Yes   .50-60..................         I-D        NA           G
 10% Benzene or more).                                              2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

[[Page 156]]

 
Benzene, Toluene, Xylene mixtures         Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Closed       II      G-1        NR     Vent F        Yes   .50-60..................         I-D        NA           G
 (having 10% Benzene or more).                                      2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Butadiene.............................    Press.   Amb.      II       1NA  Ind. Pressure...........       SR    Restr.       II      P-2        NR     Vent F        Yes   .50-70(a)...............         I-B        NA           G
                                                                    2 i i                                                                                                  .50-73..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Butadiene, Butylene mixtures              Press.   Amb.      II       1NA  Ind. Pressure...........       SR    Restr.       II      P-1        NR     Vent F        Yes   .50-30..................         I-B        NA           G
 (containing Acetylenes).                                           2 i i                                                                                                  .50-70(a)...............
                                                                                                                                                                           .50-73..................
                                                                                                                                                                           .56-1(b), (d), (f), (g).
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Butyl acrylate (all isomers)..........    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .50-70(a)...............         I-D        NA           G
                                                                    2 i i                                                                                                  .50-81(a), (b)..........
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Butylamine (all isomers)..............    Atmos.   Amb.      II     1 i i  Ind. Gravity............       PV    Closed       II      G-1        NR     Vent F        Yes   .55-1(c)................         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Butyl methacrylate....................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .50-70(a)...............         I-D        NA           G
                                                                    2 i i                                                                                                  .50-81(a), (b)..........
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Butyraldehyde (all isomers)...........    Atmos.   Amb.     III       1 i  Integral Gravity........       PV      Open       II      G-1        NR     Vent F        Yes   .55-1(h)................         I-C        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Camphor oil (light)...................    Atmos.   Amb.      II     1 i i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   No......................         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Carbolic oil..........................    Atmos.   Amb.       I     1 i i  Integral Gravity........       PV    Closed        I      G-1        NR     Vent F        Yes   .50-5...................          NA        NA           G
                                                                    2 i i                                                                                                  .50-73..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Carbon dioxide, liquefied.............    Press.    Low     III       1NA  Ind. Pressure...........       SR    Restr.      I-L      P-1        NR     Vent F         No   .50-30..................          NA      .40-           G
                                                                      2 i                                                                                                                                         1(b)(1)
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Carbon disulfide......................    Atmos.   Amb.      II       1NA  Ind. Gravity............       PV    Restr.       II      G-1     Inert     Vent F        Yes   .50-40..................         I-A        NA           G
                                                                    2 i i                                                                                                  .50-41..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

[[Page 157]]

 
Carbon tetrachloride..................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV      Open       II      G-1        NR     Vent N         No   No......................          NA        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Cashew nut shell oil (untreated)......    Atmos.   Amb.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-2        NR     Vent N        Yes   .50-73..................          NA        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Caustic potash solution...............    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR         NR         No   .50-73..................          NA        NA           G
                                                  Elev.               2 i                                                                                                  .55-1(j)................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Caustic soda solution.................    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR         NR         No   .50-73..................          NA        NA           G
                                                  Elev.               2 i                                                                                                  .55-1(j)................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Chlorine..............................    Press.   Amb.       I       1NA  Ind. Pressure...........    SR300  Indirect        I      P-2        NR     Vent F         No   .50-30..................          NA        NA           3
                                                                    2 i i                             p.s.i.                                                               .50-31..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Chlorobenzene.........................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV      Open       II      G-1        NR     Vent N        Yes   No......................         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Chloroform............................    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent F         No   No......................          NA        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Chlorohydrins (crude).................    Atmos.   Amb.       I     1 i i  Integral Gravity........       PV    Closed        I      G-1        NR     Vent F        Yes   .50-5...................         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
o-Chloronitrobenzene..................    Atmos.   Amb.       I     1 i i  Integral Gravity........       PV    Closed        I      G-1        NR     Vent F        Yes   .50-5...................          NA        NA           G
                                                                    2 i i                                                                                                  .50-73..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Chlorosulfonic acid...................    Atmos.   Amb.     III     1 i i  Integral Gravity........       PV      Open       II      G-1        NR     Vent N         No   .50-20..................         I-B        NA           G
                                                                    2 i i                                                                                                  .50-21..................
                                                                                                                                                                           .50-73..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Coal tar naphtha solvent..............    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .50-73..................         I-D        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Coal tar pitch (molten)...............    Atmos.  Elev.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .50-73..................         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Creosote..............................    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   No......................          NA        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Cresols (all isomers).................    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   No......................          NA        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Cresols with less than 5% Phenol, see
 Cresols (all isomers).
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Cresols with 5% or more Phenol, see
 Phenol.
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

[[Page 158]]

 
Cresylate spent caustic...............    Atmos.   Amb.     III     1 i i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N         No   .50-73..................          NA        NA           G
                                                                      2 i                                                                                                  .55-1(b)................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Cresylic acid, sodium salt solution,
 see Cresylate spent caustic.
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Crotonaldehyde........................    Atmos.   Amb.      II     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .55-1(h)................         I-C        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Cyclohexanone.........................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .56-1(a), (b)...........         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Cyclohexanone, Cyclohexanol mixture...    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .56-1(b)................         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Cyclohexylamine.......................    Atmos.   Amb.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .56-1(a), (b), (c), (g).         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Cyclopentadiene, Styrene, Benzene         Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent F        Yes   .50-60..................         I-D        NA           G
 mixture.                                                           2 i i                                                                                                  .56-1(b)................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
iso-Decyl acrylate....................    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .50-70(a)...............          NA        NA           G
                                                                      2 i                                                                                                  .50-81(a), (b)..........
                                                                                                                                                                           .55-1(c)................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Dichlorobenzene (all isomers).........    Atmos.   Amb.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .56-1(a), (b)...........         I-D        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Dichlorodifluoromethane...............    Press.   Amb.     III       1NA  Ind. Pressure...........       SR    Restr.       II      P-1        NR         NR         No   No......................          NA        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1,1-Dichloroethane....................    Atmos.   Amb.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   No......................         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

[[Page 159]]

 
2,2'-Dichloroethyl ether..............    Atmos.   Amb.      II     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .55-1(f)................         I-C        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Dichloromethane.......................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F         No   No......................         I-D        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
2,4-Dichlorophenoxy acetic acid,          Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N         No   .56-1(a), (b), (c), (g).          NA        NA           G
 diethanolamine salt solution.                                        2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
2,4-Dichlorophenoxyacetic acid,           Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F         No   .56-1(a), (b), (c), (g).          NA        NA           G
 dimethylamine salt solution.                     Elev.               2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
2,4-Dichlorophenoxyacetic acid,           Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N         No   .56-1(a), (b), (c), (g).          NA        NA           G
 triisopropanolamine salt solution.                                   2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1,1-Dichloropropane...................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   No......................         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1,2-Dichloropropane...................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   No......................         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1,3-Dichloropropane...................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   No......................         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1,3-Dichloropropene...................    Atmos.   Amb.      II     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   No......................         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Dichloropropene, Dichloropropane          Atmos.   Amb.      II     1 i i  Integral Gravity........       PV    Closed       II      G-1        NR     Vent F        Yes   No......................         I-D        NA           G
 mixtures.                                                          2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
2,2-Dichloropropionic acid............    Atmos.   Amb.      II     1 i i  Integral Gravity........       PV    Restr.       II      G-1       Dry     Vent F        Yes   .50-73..................          NA        NA           G
                                                                      2 i                                                                                                  .58-1(e)................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Diethanolamine........................    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .55-1(c)................          NA        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Diethylamine..........................    Atmos.   Amb.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .55-1(c)................         I-C        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Diethylenetriamine....................    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .55-1(c)................          NA        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

[[Page 160]]

 
Diethyl ether, see Ethyl ether........
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Diisobutylamine.......................    Atmos.   Amb.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .55-1(c)................         I-C        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Diisopropanolamine....................    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .55-1(c)................          NA        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Diisopropylamine......................    Atmos.   Amb.      II     1 i i  Integral Gravity........       PV    Closed       II      G-1        NR     Vent F        Yes   .55-1(c)................         I-C        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
N,N-Dimethylacetamide.................    Atmos.   Amb.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .56-1(b)................         I-D        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Dimethylamine.........................    Press.   Amb.      II       1NA  Ind. Pressure...........       SR    Restr.       II      P-2        NR     Vent F        Yes   .55-1(c)................         I-C        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Dimethylethanolamine..................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .56-1(b), (c)...........         I-C        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Dimethylformamide.....................    Atmos.   Amb.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .55-1(e)................         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1,4-Dioxane...........................    Atmos.   Amb.      II     1 i i  Integral Gravity........       PV    Closed       II      G-1     Inert     Vent F        Yes   No......................         I-C        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Diphenylmethane diisocyanate..........    Atmos.  Elev.      II     1 i i  Integral Gravity........       PV    Closed        I      G-1     Inert     Vent F        Yes   .50-5...................          NA       Yes           G
                                                                      2 i                                                                      Dry                         .56-1(a), (b)...........
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Di-n-propylamine......................    Atmos.   Amb.      II     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .55-1(c)................         I-C        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Dodecyl- dimethyl- amine,                 Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .56-1(b)................          NA        NA           G
 Tetradecyldimethylamine mixture.                                     2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Dodecyl phenol........................    Atmos.   Amb.       I     1 i i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .50-73..................         I-D        NA           2
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

[[Page 161]]

 
Epichlorohydrin.......................    Atmos.   Amb.       I     1 i i  Integral Gravity........       PV    Closed        I      G-1        NR     Vent F        Yes   .50-5...................         I-C        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Ethanolamine..........................    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .55-1(c)................         I-D        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Ethyl acrylate........................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .50-70(a)...............         I-D        NA           G
                                                                    2 i i                                                                                                  .50-81(a), (b)..........
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Ethylamine solution (72% or less).....    Atmos.   Amb.      II     1 i i  Integral Gravity........       PV    Closed       II      G-1        NR     Vent F        Yes   .55-1(b)................         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
N-Ethylbutylamine.....................    Atmos.   Amb.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .55-1(b)................         I-C        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Ethyl chloride........................    Press.   Amb.      II       1NA  Ind. Pressure...........       SR    Restr.       II      P-2        NR     Vent F        Yes   No......................         I-D        NA           8
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
N-Ethylcyclohexylamine................    Atmos.   Amb.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .55-1(b)................         I-C        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Ethylene chlorohydrin.................    Atmos.   Amb.       I     1 i i  Integral Gravity........       PV    Closed        I      G-1        NR     Vent F        Yes   .50-5...................         I-D        NA           G
                                                                    2 i i                                                                                                  .50-73..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Ethylene cyanohydrin..................    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   No......................          NA        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Ethylenediamine.......................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .55-1(c)................         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Ethylene dibromide....................    Atmos.   Amb.      II     1 i i  Integral Gravity........       PV    Closed       II      G-1        NR     Vent F         No   No......................          NA        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Ethylene dichloride...................    Atmos.   Amb.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   No......................         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

[[Page 162]]

 
Ethylene glycol monoalkyl ethers......    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   No......................         I-C        NA           G
Including:............................                                2 i
2-Ethoxyethanol.......................
Ethylene glycol butyl ether...........
Ethylene glycol tert-butyl ether......
Ethylene glycol ethyl ether...........
Ethylene glycol methyl ether..........
Ethylene glycol n-propyl ether........
Ethylene glycol isopropyl ether.......
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Ethylene glycol hexyl ether...........    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   No......................          NA        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Ethylene glycol propyl ether..........    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   No......................          NA        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Ethylene oxide........................    Press.   Amb.       I       1NA  Ind. Pressure...........       SR    Restr.       II      P-2     Inert     Vent F        Yes   .50-10..................         I-B  .40-1(c)           4
                                                                    2 i i                                                                                                  .50-12..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Ethyl ether...........................    Atmos.   Amb.      II       1NA  Ind. Gravity............       PV    Closed       II      G-1     Inert     Vent F        Yes   .50-40..................         I-C        NA           G
                                                                    2 i i                                                                                                  .50-42..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
2-Ethylhexyl acrylate.................    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .50-70(a)...............         I-D        NA           G
                                                                    2 i i                                                                                                  .50-81(a), (b)..........
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Ethylidene norbornene.................    Atmos.   Amb.      II     1 i i  Integral Gravity........       PV    Closed       II      G-1        NR     Vent F        Yes   .50-5...................          NA        NA           G
                                                                    2 i i                                                                                                  .50-74..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Ethyl methacrylate....................    Atmos.   Amb.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .50-70(a)...............         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

[[Page 163]]

 
2-Ethyl-3-propylacrolein..............    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   No......................         I-C        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Ferric chloride solutions.............    Atmos.   Amb.     III     1 i i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N         No   .50-20..................         I-B        NA           G
                                                                    2 i i                                                                                                  .50-75..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Fluorosilicic acid (30% or less)......    Atmos.   Amb.      II     1 i i  Ind. Gravity............       PV    Closed       II      G-1        NR     Vent F         No   .50-20..................         I-B        NA           4
                                                                    2 i i                                                                                                  .50-22..................
                                                                                                                                                                           .50-73..................
                                                                                                                                                                           .50-77..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Formaldehyde solution (37% to 50%)....    Atmos.   Amb.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F         No   .55-1(h)................         I-B        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Formic acid...........................    Atmos.   Amb.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .50-73..................         I-D        NA           G
                                                                      2 i                                                                                                  .55-1(i)................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Furfural..............................    Atmos.   Amb.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .55-1(h)................         I-C        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Glutaraldehyde solution (50% or less).    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N         No   No......................          NA        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Glyoxylic acid solution (50% or less).    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .50-73..................          NA        NA           G
                                                                    2 i i                                                                                                  .50-81..................
                                                                                                                                                                           .58-1(e)................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Hexamethylenediamine solution.........    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .55-1(c)................         I-D        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Hexamethyleneimine....................    Atmos.   Amb.      II     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .56-1(b), (c)...........         I-C        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Hydrochloric acid.....................    Atmos.   Amb.     III       1NA  Ind. Gravity............     Open      Open       II      G-1        NR     Vent F         No   .50-20..................         I-B        NA           4
                                                                    2 i i                                                                                                  .50-22..................
                                                                                                                                                                           .50-73..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Hydrofluorosilicic acid (25% or less),
 see Fluorosilicic acid (30% or less).
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
2-Hydroxyethyl acrylate...............    Atmos.   Amb.       I     1 i i  Integral Gravity........       PV    Closed        I      G-1        NR     Vent F        Yes   .50-5...................          NA        NA           G
                                                                      2 i                                                                                                  .50-70(a)...............
                                                                                                                                                                           .50-73..................
                                                                                                                                                                           .50-81(a), (b)..........
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

[[Page 164]]

 
Isoprene..............................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV      Open       II      G-1        NR     Vent F        Yes   .50-70(a)...............         I-D        NA           G
                                                                    2 i i                                                                                                  .50-81(a), (b)..........
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Kraft pulping liquors (free alkali        Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR         NR         No   .50-73..................          NA        NA           G
 content 3% or more) (including:                                      2 i                                                                                                  .56-1(a), (c), (g)......
 Black, Green, or White liquor).
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Mesityl oxide.........................    Atmos.   Amb.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   No......................         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Methylacetylene, Propadiene mixture...    Press.   Amb.     III      1 NA  Ind. Pressure...........       SR    Restr.       II      P-2        NR     Vent F        Yes   .50-79..................         I-C        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Methyl acrylate.......................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .50-70(a)...............         I-D        NA           G
                                                                    2 i i                                                                                                  .50-81(a), (b)..........
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Methylamine solution (42% or less)....    Atmos.   Amb.      II       1NA  Ind. Gravity............       PV    Closed       II      G-1        NR     Vent F        Yes   .56-1(a), (b), (c), (g).         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Methyl bromide........................    Press.   Amb.       I       1NA  Ind. Pressure...........       SR    Closed        I      P-2        NR     Vent F        Yes   .50-5...................         I-D        NA           2
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Methyl chloride.......................    Press.   Amb.      II       1NA  Ind. Pressure...........       SR    Restr.       II      P-2        NR     Vent F        Yes   .55-1(c)................         I-D        NA           8
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Methylcyclopentadiene dimer...........    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   No......................         I-B        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Methyl diethanolamine.................    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .56-1(b), (c)...........         I-C        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
2-Methyl-5-ethylpyridine..............    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .55-1(e)................         I-D        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

[[Page 165]]

 
Methyl methacrylate...................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .50-70(a)...............         I-D        NA           G
                                                                    2 i i                                                                                                  .50-81(a), (b)..........
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
2-Methylpyridine......................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .55-1(c)................         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
alpha-Methylstyrene...................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .50-70(a)...............         I-D        NA           G
                                                                    2 i i                                                                                                  .50-81(a), (b)..........
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Monochloro- difluoromethane...........    Press.   Amb.     III       1NA  Ind. Pressure...........       SR    Restr.        I      P-1        NR         NR         No   No......................          NA        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Morpholine............................    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .55-1(c)................         I-C        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Motor fuel anti-knock compounds           Atmos.   Amb.       I     1 i i  Ind. Gravity............       PV    Closed        I      G-1        NR     Vent F        Yes   .50-6...................         I-D        NA       .50-6
 (containing lead alkyls).                                          2 i i                                                                                                  .50-73..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Nitric acid (70% or less).............    Atmos.   Amb.      II     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F         No   .50-20..................         I-B        NA           4
                                                                    2 i i                                                                                                  .50-73..................
                                                                                                                                                                           .50-80..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Nitrobenzene..........................    Atmos.   Amb.       I     1 i i  Integral Gravity........       PV    Closed        I      G-1        NR     Vent F        Yes   .50-5...................         I-D        NA           G
                                                                    2 i i                                                                                                  .50-73..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Nitrogen, liquefied...................    Press.    Low     III       1NA  Ind. Pressure...........       SR    Restr.     II-L      P-1        NR     Vent F         No   .40-1(a)................          NA  .40-1(a)           G
                                                                      2 i                                                                                                  .50-30..................
                                                                                                                                                                           .50-36..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1- or 2-Nitropropane..................    Atmos.   Amb.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .50-81..................         I-C        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
o-Nitrotoluene........................    Atmos.   Amb.       I     1 i i  Integral Gravity........       PV    Closed        I      G-1        NR     Vent F        Yes   .50-5...................         I-D        NA           G
                                                                    2 i i                                                                                                  .50-73..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Octyl nitrates (all isomers), see
 Alkyl(C7-C9) nitrates.
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Oleum.................................    Atmos.   Amb.     III     1 i i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N         No   .50-20..................         I-B        NA           4
                                                                    2 i i                                                                                                  .50-21..................
                                                                                                                                                                           .50-73..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Pentachloroethane.....................    Atmos.   Amb.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F         No   No......................          NA        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

[[Page 166]]

 
1,3-Pentadiene........................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .50-70(a)...............         I-D        NA           G
                                                                    2 i i                                                                                                  .50-81..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Perchloroethylene.....................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F         No   No......................          NA        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Phenol................................    Atmos.   Amb.       I     1 i i  Integral Gravity........       PV    Closed        I      G-1        NR     Vent F        Yes   .50-5...................         I-D        NA           2
                                                                      2 i                                                                                                  .50-73..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Phosphoric acid.......................    Atmos.   Amb.     III     1 i i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N         No   .50-20..................         I-B        NA           4
                                                                      2 i                                                                                                  .50-23..................
                                                                                                                                                                           .50-73..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Phosphorus, white (elemental).........    Atmos.  Elev.       I     1 i i  Integral Gravity........       PV    Closed        I      G-1     Water     Vent F        Yes   .50-50..................          NA        NA         4-8
                                                                    2 i i                                                                      Pad
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Phthalic anhydride (molten)...........    Atmos.  Elev.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   No......................         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Polyethylene polyamines...............    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .55-1(e)................          NA        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Polymethylene polyphenyl isocyanate...    Atmos.   Amb.      II     1 i i  Integral Gravity........       PV    Closed       II      G-1       Dry     Vent F        Yes   .55-1(e)................          NA        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Potassium hydroxide solution, see
 Caustic potash solution.
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
iso-Propanolamine.....................    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .55-1(c)................         I-D        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Propanolamine (iso-, n-)..............    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .56-1(b), (c)...........         I-D        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Propionic acid........................    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .50-73..................         I-D        NA           G
                                                                    2 i i                                                                                                  .55-1(g)................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
iso-Propylamine.......................    Atmos.   Amb.      II     1 i i  Integral Gravity........       PV    Closed       II      G-1        NR     Vent F        Yes   .55-1(c)................         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

[[Page 167]]

 
Propylene oxide.......................    Press.   Amb.      II       1NA  Ind. Pressure...........       SR    Restr.       II      P-1     Inert     Vent F        Yes   .50-10..................         I-B        NA           G
                                                                    2 i i                                                                                                  .50-13..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
iso-Propyl ether......................    Atmos.   Amb.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-1     Inert     Vent F        Yes   .50-70(a)...............         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Pyridine..............................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .55-1(e)................         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Sodium aluminate solution (45% or         Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR         NR         No   .50-73..................          NA        NA           G
 less).                                           Elev.               2 i                                                                                                  .56-1(a), (b), (c)......
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Sodium chlorate solution (50% or less)    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N         No   .50-73..................          NA        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Sodium dichromate solution (70% or        Atmos.   Amb.      II     1 i i  Integral Gravity........     Open    Closed       II      G-1        NR     Vent N         No   .50-5(d)................          NA        NA           G
 less).                                                             2 i i                                                                                                  .50-73..................
                                                                                                                                                                           .56-1(b), (c)...........
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Sodium hydroxide solution, see Caustic
 soda solution.
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Sodium hypochlorite solution (20% or      Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F         No   .50-73..................          NA        NA           G
 less).                                                             2 i i                                                                                                  .56-1(a), (b)...........
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Sodium sulfide, hydrosulfide solutions    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N         No   .50-73..................          NA        NA           G
 (H2S 15ppm or less).                                                 2 i                                                                                                  .55-1(b)................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Sodium sulfide, hydrosulfide solutions    Atmos.   Amb.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F         No   .50-73..................          NA        NA           G
 (H2S greater than 15ppm but less than                                2 i                                                                                                  .55-1(b)................
 200ppm).
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Sodium sulfide, hydrosulfide solutions    Atmos.   Amb.      II     1 i i  Integral Gravity........       PV    Closed       II      G-1        NR     Vent F         No   .50-73..................          NA        NA           G
 (H2S greater than 200ppm).                                           2 i                                                                                                  .55-1(b)................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Sodium thiocyanate solution (56% or       Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .58-1(a)................          NA        NA           G
 less).                                                               2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

[[Page 168]]

 
Styrene monomer.......................    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .50-70(a)...............         I-D        NA           G
                                                                    2 i i                                                                                                  .50-81(a), (b)..........
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Sulfur (molten).......................    Atmos.  Elev.     III       1 i  Integral Gravity........     Open      Open       II      G-1    Vent N     Vent N        Yes   .50-55..................         I-C      .40-           G
                                                                    2 i i                                                                                                                                         1(f)(1)
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Sulfur dioxide........................    Press.   Amb.       I       1NA  Ind. Pressure...........       SR    Closed  .......      P-2        NR     Vent F         No   .50-30..................          NA        NA           2
                                                                    2 i i                                                                                                  .50-84..................
                                                                                                                                                                           .55-1(j)................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Sulfuric acid.........................    Atmos.   Amb.     III     1 i i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N         No   .50-20..................         I-B        NA           4
                                                                    2 i i                                                                                                  .50-21..................
                                                                                                                                                                           .50-73..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Sulfuric acid, spent..................    Atmos.   Amb.     III     1 i i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N         No   .50-20..................         I-B        NA           4
                                                                    2 i i                                                                                                  .50-21..................
                                                                                                                                                                           .50-73..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1,1,2,2-Tetrachloroethane.............    Atmos.   Amb.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F         No   No......................          NA        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Tetraethylenepentamine................    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .55-1(c)................         I-C        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Tetrahydrofuran.......................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .50-70(b)...............         I-C        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Toluenediamine........................    Atmos.  Elev.      II     1 i i  Integral Gravity........       PV    Closed       II      G-1        NR     Vent F        Yes   .50-73..................          NA        NA           G
                                                                      2 i                                                                                                  .56-1(a), (b), (c), (g).
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Toluene diisocyanate..................    Atmos.   Amb.       I     1 i i  Integral Gravity........       PV    Closed        I      G-1       Dry     Vent F        Yes   .50-5...................         I-D        NA           G
                                                                    2 i i                                                                      N 2                         .55-1(e)................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
o-Toluidine...........................    Atmos.   Amb.      II     1 i i  Integral Gravity........       PV    Closed       II      G-1        NR     Vent F        Yes   .50-5...................         I-D        NA           G
                                                                    2 i i                                                                                                  .50-73..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1,2,4-Trichlorobenzene................    Atmos.   Amb.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   No......................         I-D        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

[[Page 169]]

 
1,1,2-Trichloroethane.................    Atmos.   Amb.     III     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F         No   .50-73..................         I-D        NA           G
                                                                      2 i                                                                                                  .56-1(a)................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Trichloroethylene.....................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F         No   No......................         I-D        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1,2,3-Trichloropropane................    Atmos.   Amb.      II     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .50-73..................         I-D        NA           G
                                                                      2 i                                                                                                  .56-1(a)................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Triethanolamine.......................    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .55-1(b)................         I-C        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Triethylamine.........................    Atmos.   Amb.      II     1 i i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .55-1(e)................         I-C        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Triethylenetetramine..................    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR     Vent N        Yes   .55-1(b)................         I-C        NA           G
                                                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Triphenylborane (10% or less), Caustic    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR         NR         No   .56-1(a), (b), (c)......          NA        NA           G
 soda solution.                                                       2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Trisodium phosphate solution..........    Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR         NR         No   .50-73..................          NA        NA           G
                                                  Elev.               2 i                                                                                                  .56-1(a), (c)...........
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Urea, Ammonium nitrate solution           Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F         No   .56-1(b)................         I-D        NA           G
 (containing more than 2% NH 3).                                      2 i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Valeraldehyde (all isomers)...........    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1     Inert     Vent F        Yes   No......................         I-C        NA           G
                                                                    2 i i
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Vanillan black liquor (free alkali        Atmos.   Amb.     III       1 i  Integral Gravity........     Open      Open       II      G-1        NR         NR         No   .50-73..................          NA        NA           G
 content 3% or more).                                                 2 i                                                                                                  .56-1(a), (c), (g)......
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Vinyl acetate.........................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV      Open       II      G-1        NR     Vent F        Yes   .50-70(a)...............         I-D        NA           G
                                                                    2 i i                                                                                                  .50-81(a), (b)..........
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Vinyl chloride........................    Press.   Amb.      II       1NA  Ind. Pressure...........       SR    Closed       II      P-2        NR     Vent F        Yes   .50-30..................         I-D        NA           8
                                                                    2 i i                                                                                                  .50-34..................
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Vinyl chloride........................    Atmos.    Low      II       1NA  Ind. Gravity............       PV    Closed     II-L      G-2        NR     Vent F        Yes   .50-30..................         I-D      .40-           8
                                                                    2 i i                                                                                                  .50-34..................               1(b)(1)
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

[[Page 170]]

 
Vinylidene chloride...................    Atmos.   Amb.      II       1NA  Ind. Gravity............       PV    Closed       II      P-2    Padded     Vent F        Yes   .55-1(f)................         I-D        NA           G
                                                                    2 i i                                                                                                  .50-70(a)...............
                                                                                                                                                                           .50-81(a), (b)..........
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Vinyltoluene..........................    Atmos.   Amb.     III       1 i  Integral Gravity........       PV    Restr.       II      G-1        NR     Vent F        Yes   .50-70(a)...............         I-D        NA           G
                                                                    2 i i                                                                                                  .50-81..................
                                                                                                                                                                           .56-1(a), (b), (c), (g).
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
For requirements see these sections in  ........  .....   .10-1    .13- 5  .15- 1..................    .15-5   .15- 10   .20- 1   .20- 5     .25-1      .25-2        .30   ........................     111.105       .40     .04- 5
 Part 151:.                                                                                                                                                                                               (Sub-
                                                                                                                                                                                                     chapter J)
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
See Table 2 of Part 153 for additional cargoes permitted to be carried by tankbarge.
Terms and symbols:
Segregation--Tank--
  Line 1--Segregation of cargo from surrounding waters:
    i = Skin of vessel (single skin) only required. Cargo tank wall can be vessel's hull.
     i i = Double skin required. Cargo tank wall cannot be vessel's hull.
  Line 2--Segregation of cargo space from machinery spaces and other spaces which have or could have a source of ignition:
    i = Single bulkhead only required. Tank wall can be sole separating medium.
     i i = Double bulkhead required. Cofferdam, empty tank, pumproom, tank with Grade E Liquid (if compatible with cargo) is satisfactory.
Internal tank inspection--
  G--Indicates cargo is subject to general provisions of 151.04-5(b).
  Specific numbers in this column are changes from the general provisions.
Abbreviations used:
Tank type: Ind = Independent.
Vent:
  PV = Pressure vacuum valve.
  SR = Safety relief.
Gauging device: Restr. = Restricted.
General usage:
  NR = No requirement.
  NA = Not applicable.
1. The provisions contained in 46 CFR Part 197, subpart C, apply to liquid cargoes containing 0.5% or more benzene by volume.


[USCG-2000-7079, 65 FR 67183, Nov. 8, 2000]

[[Page 171]]



           Subpart 151.10_Barge Hull Construction Requirements



Sec. 151.10-1  Barge hull classifications.

    (a) Each barge constructed or converted in conformance with this 
subpart shall be assigned a hull type number.
    (1) Effective dates for certain requirements:
    (i) Barges constructed or converted between July 1, 1964, and June 
1, 1970, in accordance with the construction requirements of Secs. 32.63 
and 98.03 of this chapter are considered to comply with the basic 
provisions of this subpart and will retain the hull type classification 
for the service for which they were originally approved. Changes in 
product endorsement will not be considered a change in service, except 
when a change to a product of higher specific gravity necessitates a 
reevaluation of the intact and damage stability requirements in subpart 
E of part 172 of this chapter.
    (2) [Reserved]
    (b) For this purpose the barge hull types shall be defined as 
follows:
    (1) Type I barge hull. Barge hulls classed as Type I are those 
designed to carry products which require the maximum preventive measures 
to preclude the uncontrolled release of the cargo. These barges are 
required to meet:
    (i) Standards of intact stability and a modified two compartment 
standard of subdivision and damage stability, as specified in subpart E 
of part 172 of this chapter; and
    (ii) Hull structural requirements, including an assumed grounding 
condition.
    (2) Type I-S (special) barge hulls. Type I-S (special) barge hulls 
are those constructed or converted for the carriage of chlorine in bulk 
prior to July 1, 1964, and modified to higher stability standards prior 
to July 1, 1968, but not meeting the requirements for full Type I 
classification.
    (3) Type II barge hull. Barge hulls classed as Type II are those 
designed to carry products which require significant preventive measures 
to preclude the uncontrolled release of the cargo. These barges are 
required to meet:
    (i) Standards of intact stability and a modified one compartment 
standard of subdivision and damage stability, as specified in subpart E 
of part 172 of this chapter; and
    (ii) Hull structural requirements, including an assumed grounding 
condition.
    (4) Type III barge hull. Barge hulls classed as Type III are those 
designed to carry products of sufficient hazard to require a moderate 
degree of control. These barges are required to meet:
    (i) Standards of intact stability as specified in subpart E of part 
172 of this chapter; and
    (ii) Hull structural requirements.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 79-023, 48 FR 
51008, Nov. 4, 1983; CGD 88-100, 54 FR 40040, Sept. 29, 1989]



Sec. 151.10-5  Subdivision and stability.

    Each barge must meet the applicable requirements in subchapter S of 
this chapter.

[CGD 70-023, 48 FR 51009, Nov. 4, 1983]



Sec. 151.10-15  Certificate endorsement.

    (a)-(b) [Reserved]
    (c) Certificate endorsement. The following information shall be 
submitted, and upon approval of calculations shall form part of the 
endorsement on the Certificate of Inspection:
    (1) Limiting draft for each hull type service for which approval is 
requested.
    (2) Maximum density (lb./gal.) and maximum cargo weight (tons) for 
each tank for which approval is requested. Their weights will normally 
reflect uniform loading except that for trim purposes the individual 
tank cargo weight may exceed the uniform loading tank cargo weight, 
corresponding to the barge fresh water deadweight at the limiting draft, 
by 5 percent. Where a greater degree of nonuniform loading is desired, 
longitudinal strength calculations shall be submitted.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 79-023, 48 FR 
51009, Nov. 4, 1983]



Sec. 151.10-20  Hull construction.

    (a) Construction features. (1) Each barge hull shall be constructed 
with a suitable bow form (length, shape, and height of headlog) to 
protect against diving at the maximum speed at which the barge is 
designed to be towed. In

[[Page 172]]

any integrated tow, only the lead barge need comply with this 
requirement.
    (2) All ``open hopper'' type barges shall be provided with coamings 
around the hopper space and a 36-inch minimum height plowshare 
breakwater on the forward rake. The plowshare breakwater may be omitted, 
if it is demonstrated to the satisfaction of the Commandant that 
sufficient protection is achieved without it. Coamings shall have a 
minimum height of 36 inches forward and may be graduated to a minimum 
height of 24 inches at midlength and 18 inches thereafter. All hopper 
barges constructed with a weathertight rain shield over the hopper space 
are exempt from these requirements, except that they shall be provided 
with an 18-inch minimum coaming all around the hopper.
    (3) All ``open hopper'' type barges modified for the carriage of 
chlorine in bulk shall be provided with 36-inch minimum height coamings 
around the hopper.
    (4) All barges in ocean or coastwise service shall be provided with 
a structural deck and hatches in accordance with the applicable 
provisions of subchapter E of this chapter and the scantling 
requirements of the American Bureau of Shipping.
    (b) Hull structural requirements. (1) All Types I, II, and III 
barges shall comply with the basic structural requirements of the 
American Bureau of Shipping for barges of the ordinary types and the 
applicable supplementary requirements of this section.
    (2) Types I and II barges in inland service: A grounding condition 
shall be assumed where the forward rake bulkhead rests upon a pinnacle 
at the water surface. The maximum hull and tank bending moment and tank 
saddle reactions (if applicable) shall be determined. The hull bending 
stress shall not exceed the applicable limits of paragraphs (b)(2) (i), 
(ii), or (iii) of this section. The maximum tank bending moment and 
saddle reaction shall be used in the tank design calculations required 
by Sec. 151.15-2(b)(3).
    (i) Independent tanks supported by only two saddles do not 
contribute to the strength and stiffness of the barge hull. In such 
case, the hull stress shall not exceed either 50 percent of the minimum 
ultimate tensile strength of the material or 70 percent of the yield 
strength when specified, whichever is greater.
    (ii) Independent tanks supported by three or more saddles contribute 
to the strength and stiffness of the hull. In such case, the hull stress 
shall not exceed the percentage stress values prescribed in Sec. 151.10-
20(b)(2)(i), multiplied by the quantity

(1.5-SWT/UTS),

where SWT is the stress calculated without including the effect of the 
          tanks, and UTS is the minimum ultimate tensile strength of the 
          material. The value SWT, however, shall in no case be more 
          than 75 percent of UTS.

    (iii) Integral tanks may be considered as contributing to the 
strength and stiffness of the barge hull. The hull stresses for integral 
tank barges shall not exceed the percentage stress values prescribed in 
paragraph (b)(2)(i), of this section.
    (3) Types I and II barges in ocean service:
    (i) Independent tank barges with tanks supported by three or more 
saddles shall be subjected to a 0.6L\0.6\ trochoidal wave hogsag 
analysis to determine the maximum hull and tank bending moments and tank 
saddle reactions.
    (ii) All independent tank barges, regardless of the number of saddle 
supports shall be subject to a still water bending analysis to determine 
the hull bending moment. For those barges with independent tanks 
supported by three or more saddles, this analysis shall consider tank-
hull interaction so as to determine tank bending moments and saddle 
reactions.
    (iii) The still water tank bending moments and saddle reactions 
shall be superimposed upon those obtained by simultaneous application of 
the following dynamic loadings:
    (a) Rolling 30 deg. each side (120 deg. full cycle) in 10 seconds.
    (b) Pitching 6 deg. half amplitude (24 deg. full cycle) in 7 
seconds.
    (c) Heaving L/80 half amplitude (L/20 full cycle) in 8 seconds.
    (iv) The hull structure and saddle support system shall be analyzed, 
using the maximum hull bending moments and saddle reactions obtained 
from the

[[Page 173]]

foregoing. Bending stress shall not exceed 60 percent of the yield 
strength or 42 percent of the minimum tensile strength of the material, 
whichever is less. Critical buckling strength shall be at least 75 
percent greater than calculated buckling stresses. The maximum tank 
bending moments and saddle reactions shall be used in the tank design 
calculations required by Sec. 151.15-3(b)(8).



   Subpart 151.12_Equipment and Operating Requirements for Control of 
                  Pollution From Category D NLS Cargoes

    Source: CGD 81-101, 52 FR 7777, Mar. 12, 1987, unless otherwise 
noted.



Sec. 151.12-5  Equipment for Category D NLS.

    The Coast Guard endorses the Certificate of Inspection and for ships 
making foreign voyages issues the endorsed NLS Certificate required by 
Sec. 151.12-10 for an oceangoing non-self-propelled ship to carry as 
bulk cargo the following Category D NLSs if the ship meets the 
requirements of this part and the requirements applying to ships that 
carry Category D NLS cargoes in Secs. 153.470, 153.486, and 153.490 of 
this chapter:

Acetic acid
Acrylic acid
Adiponitrile
Aminoethylethanolamine
Ammonium bisulfite solution
Butyl methacrylate
Caustic soda solution
Coal tar pitch
Cyclohexanone
Cyclohexanone, Cychexanol mixture
Dichloromethane
2,2-Dichloropropionic acid
Diethylenetriamine
N,N-Dimethylacetamide
Dimethylethanolamine
Dimethylformamide
1,4-Dioxane
Ethanolamine
N-Ethylcyclohexylamine
Ethylene cyanohydrin
Ethylene glycol monoalkyl ethers
Ethyl methacrylate
Formic acid
Glutaraldehyde solution
Glyoxylic acid solution (50% or less)
Hydrochloric acid
Mesityl oxide
Methyl methacrylate
Morpholine
1- or 2-Nitropropane
Phosphoric acid
Polyethylene polyamines
Polymethylene polyphenyl isocyanate
Propionic acid
iso-Propyl ether
Pyridine
Tetraethylenepentamine
Tetrahydrofuran
Triethanolamine
Triethylenetetramine

[CGD 81-101, 52 FR 7777, Mar. 12, 1989, as amended by CGD 88-100, 54 FR 
40040, Sept. 29, 1989; CGD 92-100, 59 FR 17028, Apr. 11, 1994; CGD 94-
900, 59 FR 45139, Aug. 31, 1994; CGD 94-902, 60 FR 34043, June 29, 1995; 
USCG-2000-7079, 65 FR 67196, Nov. 8, 2000]



Sec. 151.12-10  Operation of oceangoing non-self-propelled ships Carrying
Category D NLS.

    (a) An oceangoing non-self-propelled ship may not carry in a cargo 
tank a Category D NLS cargo listed under Sec. 151.12-5 unless the ship 
has on board a Certificate of Inspection and for ships making foreign 
voyages an NLS Certificate endorsed under that section to allow the 
cargo tank to carry the NLS cargo.
    (b) The person in charge of an oceangoing non-self-propelled ship 
that carries a Category D NLS listed under Sec. 151.12-5 shall ensure 
that the ship is operated as prescribed for the operation of oceangoing 
ships carrying Category D NLSs in Secs. 153.901, 153.909, 153.1100, 
153.1102, 153.1104, 153.1106, 153.1124, 153.1126, 153.1128, 153.1130 and 
153.1132 of this chapter.

[CGD 81-101, 52 FR 7777, Mar. 12, 1987, as amended by CGD 81-101, 53 FR 
28974, Aug. 1, 1988 and 54 FR 12629, Mar. 28, 1989]



                    Subpart 151.13_Cargo Segregation



Sec. 151.13-1  General.

    This subpart prescribes the requirements for cargo segregation for 
cargo tanks. These requirements are based on considerations of cargo 
reactivity, stability, and contamination of the surroundings and other 
cargoes.

[CGD 88-100. 54 FR 40029, Sept. 29, 1989, as amended by CGD 96-041, 61 
FR 50731, Sept. 27, 1996]

[[Page 174]]



Sec. 151.13-5  Cargo segregation--tanks.

    (a) The configurations listed in this paragraph refer to the 
separation of the cargo from its surroundings and list the various 
degrees of segregation required. Paragraphs and (2) of this section 
explain the symbols used in lines 1 and 2, in order, under the tank 
segregation column of Table 151.05.
    (1) Segregation of cargo from surrounding waters (Line 1 of Table 
151.05).

i = Skin of vessel (single skin) only required. Cargo tank wall can be 
vessel's hull.
ii = Double skin required. Cargo tank wall cannot be vessel's hull.
NA = Nonapplicable for this case. Independent tanks already have such 
segregation built in through design.

    (2) Segregation of cargo space from machinery spaces and other 
spaces which have or could have a source of ignition (Line 2 of Table 
151.05).

i = Single bulkhead only required. Tank wall can be sole separating 
medium.
ii = Double bulkhead, required. Cofferdam, empty tank, pumproom, tank 
with Grade E Liquid (if compatible with cargo) is satisfactory.

    (b) [Reserved]
    (c) If a cofferdam is required for segregation purposes and a 
secondary barrier is required for low temperature protection by 
Sec. 151.15-3(d)(4), the void space between the primary and secondary 
barriers shall not be acceptable in lieu of the required cofferdam.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 75-59, 45 FR 
70273, Oct. 23, 19805; CGD 96-041, 61 FR 50731, Sept. 27, 1996]



                          Subpart 151.15_Tanks



Sec. 151.15-1  Tank types.

    This section lists the definitions of the various tank types 
required for cargo containment by Table 151.05.
    (a) Integral. A cargo containment envelope which forms a part of the 
vessel's hull in which it is built, and may be stressed in the same 
manner and by the same loads which stress the contiguous hull structure. 
An integral tank is essential to the structural completeness of its 
vessel's hull.
    (b) Independent. A cargo containment envelope which is not a 
contiguous part of the hull structure. An independent tank is built and 
installed so as to eliminate, wherever possible (or, in any event, to 
minimize) its stressing as a result of stressing or motion of the 
adjacent hull structure. In general, therefore, motion of parts of the 
tank relative to the adjacent hull structure is possible. An independent 
tank is not essential to the structural completeness of its carrying 
vessel's hull.
    (c) Gravity. Tanks having a design pressure (as described in Part 54 
of this chapter) not greater than 10 pounds per square inch gauge and of 
prismatic shape or other geometry where stress analysis is neither 
readily nor completely determinate. (Integral tanks are of the gravity 
type.)
    (d) Pressure. Independent tanks whose design pressure (as described 
in Part 54 of this chapter) is above 10 pounds per square inch gauge and 
fabricated in accordance with part 54, of this chapter. Independent 
gravity tanks which are of normal pressure vessel configuration (i.e., 
bodies of revolution, in which the stresses are readily determinate) 
shall be classed as pressure vessel type tanks even though their maximum 
allowable working pressure is less than 10 pounds per square inch gauge. 
Pressure vessel tanks shall be of Classes I, I-L, II, II-L, or III, as 
defined in subchapter F of this chapter.



Sec. 151.15-3  Construction.

    This section lists the requirements for construction of the types of 
cargo tanks defined in Sec. 151.15-1.
    (a) Gravity type tanks. Gravity type cargo tanks vented at a 
pressure of 4 pounds per square inch gauge or less shall be constructed 
and tested as required by standards established by the American Bureau 
of Shipping or other recognized classification society. Gravity type 
tanks vented at a pressure exceeding 4 but not exceeding 10 pounds per 
square inch gauge will be given special consideration by the Commandant.
    (b) Pressure vessel type tanks. Pressure vessel type tanks shall be 
designed and tested in accordance with the requirements of Part 54 of 
this chapter.

[[Page 175]]

    (1) Uninsulated cargo tanks, where the cargo is transported, at or 
near ambient temperatures, shall be designed for a pressure not less 
than the vapor pressure of the cargo at 115  deg.F. The design shall 
also be based on the minimum internal pressure (maximum vacuum), plus 
the maximum external static head to which the tank may be subjected.
    (2) When cargo tanks, in which the cargo is transported at or near 
ambient temperature, are insulated with an insulation material of a 
thickness to provide a thermal conductance of not more than 0.075 B.t.u. 
per square foot per degree Fahrenheit differential in temperature per 
hour, the tanks shall be designed for a pressure of not less than the 
vapor pressure of the cargo at 105  deg.F. The insulation shall also 
meet the requirements of paragraph (f) of this section.
    (3) Cargo tanks in which the temperature is maintained below the 
normal atmospheric temperature by refrigeration or other acceptable 
means shall be designed for a pressure of not less than 110 percent of 
the vapor pressure corresponding to the temperature of the liquid at 
which the system is maintained, or the pressure corresponding to the 
greatest dynamic and static loads expected to be encountered in service. 
For mechanically stressed relieved cargo tanks, additional factors 
relating design pressure and maximum allowable pressure shall be as 
specified by the Commandant. The material of the tank shall meet the 
material requirements specified in part 54 of this chapter for the 
service temperature, and this temperature shall be permanently marked on 
the tank as prescribed in Sec. 54.10-20 of this chapter.
    (4) The maximum allowable temperature of the cargo is defined as the 
boiling temperature of the liquid at a pressure equal to the setting of 
the relief valve.
    (5) The service temperature is the minimum temperature of a product 
at which it may be contained, loaded and/or transported. However, the 
service temperature shall in no case be taken higher than given by the 
following formula.

tz=tw-0.25(tw-tB)

where:
tz = Service temperature.
tw = Boiling temperature of gas at normal working pressure of 
          container but not higher than + 32  deg.F.
tB = Boiling temperature of gas at atmospheric pressure.


Under normal circumstances, only temperatures due to refrigerated 
service will be considered in determining the service temperature. 
Refrigerated service for purposes of this paragraph is defined as 
service where the temperature is controlled in the process rather than 
being caused by atmospheric conditions.
    (6) Heat transmission studies, where required, shall assume the 
minimum ambient temperatures of 0  deg.F still air and 32  deg.F still 
water, and maximum ambient temperatures of 115  deg.F still air and 90 
deg.F still water.
    (7) Where applicable, the design of the cargo tanks shall 
investigate the thermal stresses induced in the tanks at the service 
temperature.
    (8) Calculations showing the stress level in the tanks under dynamic 
loading conditions for ocean service barges (see Sec. 151.10-20(b)(4)) 
and grounding conditions for inland service barges (see Sec. 151.10-20-
(b)(2)) shall be submitted to the Commandant for approval. These 
calculations shall take into account the local stresses due to the 
interaction between the barge hull and the tanks.
    (c) High density cargo. Cargoes with a specific gravity greater than 
that for which the scantlings of the tank are designed may be carried 
provided that:
    (1) The maximum cargo weight (tons) in a specific tank does not 
exceed the maximum cargo weight (tons) endorsed on the certificate of 
inspection.
    (2) The scantlings of the tank are sufficient to prevent rupture 
under a full head of the higher density cargo. Scantlings meeting 
ordinary bulkhead requirements for the full head will satisfy this 
requirement.
    (d) Arrangements--(1) Collision protection. (i) Tanks containing 
cargoes which are required to be carried in Type I hulls by Table 151.05 
shall be located a minimum of 4 feet inboard from the side shell and box 
end of the vessel. Tanks containing cargoes which are required to be 
carried in Type II

[[Page 176]]

hulls by Table 151.05 shall be located a minimum of 3 feet inboard from 
the side shell and box end of the vessel.
    (ii) All independent cargo tanks installed on Type I or Type II 
barge hulls shall be protected with suitable collision chocks or 
collision straps. A longitudinal collision load of one and one half 
times the combined weight of the tank and the cargo shall be assumed. 
All other independent cargo tanks shall be provided with suitable 
collision chocks or collision straps assuming a longitudinal collision 
load equal to the combined weight of the tank and the cargo. The design 
bearing stress shall not exceed 2 times the yield strength or 1.5 times 
the minimum ultimate strength, whichever is less.
    (iii) Tanks containing cargoes, which are required to be carried in 
Type I or Type II hulls by Table 151.05, shall be located a minimum of 
25 feet from the head log at the bow. Box barges and trail barges need 
not comply with this requirement.
    (2) Inspection clearances. The distance between tanks or between a 
tank and the vessel's structure shall be such as to provide adequate 
access for inspection and maintenance of all tank surfaces and hull 
structure; but shall not normally be less than 15 inches except in way 
of web frames or similar major structural members where the minimum 
clearance shall be equal to the flange or faceplate width.
    (3) Access openings. Each tank shall be provided with at least a 15" 
 x  18" diameter manhole, fitted with a cover located above the maximum 
liquid level as close as possible to the top of the tank. Where access 
trunks are fitted to tanks, the diameter of the trunks shall be at least 
30 inches.
    (4) Low temperature protection. (i) When low temperature cargoes are 
to be carried in gravity type tanks at a temperature lower than that for 
which the hull steel is adequate, a secondary barrier designed to 
contain leaked cargo temporarily shall be provided. The design of the 
cargo containment system shall be such that under normal service 
conditions, or upon failure of the primary tank, the hull structure 
shall not be cooled down to a temperature which is unsafe for the 
materials involved. The secondary barrier and structural components of 
the hull which may be exposed to low temperatures shall meet the 
material requirements (i.e., chemistry and physical properties) 
specified in part 54 of this chapter for the service temperature 
involved. Heat transmission studies and tests may be required to 
demonstrate that the structural material temperatures in the hull are 
acceptable.
    (ii) The design shall take into consideration the thermal stresses 
induced in the cargo tank at the service temperature during loading.
    (iii) Where necessary, devices for spray loading or other methods of 
precooling or cooling during loading shall be included in the design.
    (iv) Pressure-vessel type tanks shall be radiographed in accordance 
with the requirements of part 54 of this chapter. For gravity type 
tanks, all weld intersections or crossings in joints of primary tank 
shells shall be radiographed for a distance of 10 thicknesses from the 
intersection. All other welding in the primary tank and in the secondary 
barrier, shall be spot radiographed in accordance with the requirements 
specified in part 54 of this chapter for Class II-L pressure vessels.
    (v) For nonpressure vessel type containment systems, access shall be 
arranged to permit inspection one side each of the primary tank and 
secondary barrier, under normal shipyard conditions. Containment systems 
which, because of their peculiar design, cannot be visually inspected to 
this degree, may be specially considered provided an equivalent degree 
of safety is attained.
    (e) Installation of cargo tanks. (1) Cargo tanks shall be supported 
on foundations of steel or other suitable material and securely anchored 
in place to prevent the tanks from shifting when subjected to external 
forces. Each tank shall be supported so as to prevent the concentration 
of excessive loads on the supporting portions of the shell or head.
    (2) Foundations, and stays where required, shall be designed for 
support and constraint of the weight of the full tank, and the dynamic 
loads imposed thereon. Thermal movement shall also be considered.

[[Page 177]]

    (3) Foundations and stays shall be suitable for the temperatures 
they will experience at design conditions.
    (4) Cargo tanks may be installed ``on deck,'' ``under deck,'' or 
with the tanks protruding through the deck. All tanks shall be installed 
with the manhole openings located in the open above the weather deck. 
Provided an equivalent degree of safety is attained, the Commandant may 
approve cargo tanks installed with manhole openings located below the 
weather deck. Where a portion of the tank extends above the weather 
deck, provision shall be made to maintain the weathertightness of the 
deck, except that the weathertightness of the upper deck need not be 
maintained on:
    (i) Vessels operating on restricted routes which are sufficiently 
protected; or,
    (ii) Open hopper type barges of acceptable design.
    (5) No welding shall be performed on tanks which require and have 
been stress relieved unless authorized by the Commandant.
    (f) Materials. (1) Materials used in the construction of cargo tanks 
shall be suitable for the intended application and shall be in 
accordance with the applicable requirements of part 54 of this chapter. 
For cargoes carried at low temperatures, the tank supports and 
foundations, and portions of the hull which may be exposed to low 
temperature, shall also meet the applicable requirements of that part.
    (2) When required, cargo tanks shall be lined with rubber or other 
material acceptable to the Commandant. The interior surfaces of the 
cargo tanks shall be made smooth, welds chipped or ground smooth, and 
the surfaces thoroughly cleaned before the lining is applied. The lining 
material shall be resistive to attack by the cargo, not less elastic 
than the metal of the tank proper, and nonporous when tested after 
application. It shall be of substantially uniform thickness. The lining 
shall be directly bonded to the tank plating, or attached by other 
satisfactory means acceptable to the Commandant.
    (g) Insulation. (1) Insulation, when provided, shall be compatible 
with the cargo and the tank materials.
    (2) Insulation in a location exposed to possible high temperature or 
source of ignition shall be one of the following:
    (i) Incombustible, complying with the requirements of Subpart 
164.009 of Part 164 of this chapter; or
    (ii) Fire retardant, having a flame spread rating of 50 or less as 
determined by ASTM Specification E 84 (incorporated by reference, see 
Sec. 151.01-2) (Tunnel Test); or,
    (iii) Nonburning or ``self-extinguishing'' as determined by ASTM 
Specification D 4986, ``Horizontal Burning Characteristics of Cellular 
Polymeric Materials'' (incorporated by reference, see Sec. 151.01-2) and 
covered by a steel jacket having a minimum thickness of 18 gauge (0.0428 
inches) (U.S. Standard Gauge) or an equivalent means of protection 
acceptable to the Commandant.
    (3) Insulation in a location protected against high temperature or 
source of ignition need satisfy no requirement for combustibility.
    (4) Insulation shall be impervious to water vapor, or have a vapor-
proof coating of a fire-retardant material acceptable to the Commandant. 
Unless the vapor barrier is inherently weather resistant, tanks exposed 
to the weather shall be fitted with a removable sheet metal jacket of 
not less than 18 gauge over the vapor-proof coating and flashed around 
all openings so as to be weathertight. Insulation which is not exposed 
to the weather when installed on tanks carrying cargoes above ambient 
temperatures need not be impervious to water vapor nor be covered with a 
vapor-proof coating.
    (5) Insulation shall be adequately protected in areas of possible 
mechanical damage.
    (h) Fire exposure protection. Tanks which are provided with fire 
exposure protection of one of the following categories may be allowed a 
reduction in the size of relief valves.
    (1) Approved incombustible insulation meeting the requirements of 
subpart 164.007 of part 164 of this chapter which is secured to the tank 
with steel bands.
    (2) Located in a hold or protected by a self-supporting steel jacket 
or cover (such as a hopper cover) of at least 10 gauge (0.1345) for 
insulation.

[[Page 178]]

    (i) Tanks not protected against fire exposure as described in this 
paragraph shall not be permitted a reduction in size of relief valves.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-100, 54 FR 
40040, Sept. 29, 1989; USCG-1999-5151, 64 FR 67183, Dec. 1, 1999; USCG-
2000-7790, 65 FR 58463, Sept. 29, 2000]



Sec. 151.15-5  Venting.

    This section contains definitions and requirements for the various 
methods of venting specified in Table 151.05. In addition to the 
requirement that all vents must penetrate into tanks at the top of the 
vapor space, the following methods of venting and the applicable 
restrictions are listed:
    (a) Open venting. A venting system which offers no restriction 
(except pipe losses and flame screen, where used) to the movement of 
liquid or vapor to or from the cargo tank (via the vent) under normal 
operating conditions. The total cross-sectional area of the vents shall 
not be less than the total cross-sectional area of the filling pipe or 
pipes. Ullage openings may be counted as part of the required cross-
sectional area: Provided, That each cargo tank has at least one 
permanent vent. The minimum size of a cargo tank vent shall be not less 
than 2\1/2\ inches. The outlet end of the vent shall terminate in a 
gooseneck bend and shall be located at a reasonable height above the 
weather deck, clear of all obstructions. No shut-off valve or frangible 
disk shall be fitted in the vent lines except that a float check valve 
may be installed so as to exclude the entry of water into the tank 
(i.e., to prevent downflooding). An open venting system may be fitted 
with a flame screen.
    (b) Pressure-vacuum venting. A normally closed venting system fitted 
with a device to automatically limit the pressure or vacuum in the tank 
to design limits. Pressure-vacuum relief valves shall comply with the 
requirements of subpart 162.017 of this chapter. The required capacity 
of the venting system shall be in accordance with part 54 of this 
chapter.
    (c) Safety relief venting. A closed venting system fitted with a 
device to automatically limit the pressure in the tank to below its 
maximum allowable working pressure. The maximum safety relief valve 
setting shall not exceed the maximum allowable working pressure of the 
tank. For cargoes carried at ambient temperatures, the minimum safety 
relief valve setting shall correspond to the saturated vapor pressure of 
the cargo at 105  deg.F if carried in an insulated tank, or 115  deg.F 
if carried in an uninsulated tank. For cargoes carried below ambient 
temperature, the safety relief valve setting shall be selected to 
provide a suitable margin between normal operating pressure of the tank 
and the opening pressure of the valve but in no case shall it exceed the 
maximum allowable working pressure of the tank. The safety relief valves 
shall be of a type approved under subparts 162.001 or 162.018 of 
subchapter Q of this chapter. The required capacity of the safety relief 
valves shall be in accordance with the requirements of part 54 of this 
chapter.
    (d) Rupture disks. (1) When required by the nature of the cargo, 
rupture disks may be installed in lieu of or in addition to other 
pressure limiting devices in accordance with the requirements of 
Sec. 54.15-13 of this chapter.
    (2) When a pressure-vacuum relief valve or safety relief valve 
normally protected by a rupture disk or breaking pin device is exposed 
to the cargo due to breakage of the disk, the valve shall be reinspected 
before being returned to service.



Sec. 151.15-6  Venting piping.

    (a) The back pressure in the relief valve discharge lines shall be 
taken into account when determining the flow capacity of the relief 
valve to be used. The back pressure in the discharge line shall be 
limited to 10 percent of the valve operating pressure or a compensating-
type valve shall be used. Suitable provision shall be made for draining 
condensate which may accumulate in the vent piping.
    (b) [Reserved]



Sec. 151.15-10  Cargo gauging devices.

    This section contains definitions and requirements for types of 
gauging devices specified in Table 151.05.
    (a) Open gauging. A gauging method which uses an opening in the 
cargo tank and which may expose the gauge

[[Page 179]]

user to the cargo and its vapors. Examples of this type are gauge hatch, 
ullage hole.
    (b) Restricted. A gauging device which penetrates the cargo tank and 
which, in operation, causes or permits the release to the atmosphere of 
small quantities of cargo vapor or liquid. The amount of cargo released 
is controlled by the small diameter of the tank penetration opening and 
by a locally operated valve or similar closure device in that opening. 
When not in use, this type gauging device is closed to maintain the 
complete integrity of cargo containment. Examples of this type are 
rotary tube, fixed tube, slip tube, sounding tube. (See Secs. 151.03-49 
and 151.15-10(g).)
    (c) Closed. A gauging device which penetrates the cargo tank, but 
which is part of a closed system maintaining the complete integrity of 
cargo containment. This device is designed and installed so as not to 
release cargo liquid or vapor in any amount to the atmosphere. Examples 
of this type are automatic float, continuous tape (magnetic coupled), 
sight glass (protected), electronic probe, magnetic, differential 
pressure cell.
    (d) Isolated or indirect. A gauging method or device which is 
isolated from the tank (no penetration of the tank shell) and which may 
employ an indirect measurement to obtain the desired quantity. Examples 
of this type are weighing of cargo, sonic depth gauge (without 
penetration of tank shell), pipe flow meter.
    (e) All gauging devices and related fixtures which form a part of 
the cargo containment barrier shall be of suitable material and shall be 
designed for the pressure and temperature of the cargo in accordance 
with the requirements of Subchapter F of this chapter.
    (f) Use of restricted gauging devices. (1) When required in Table 
151.05, cargoes carried under pressure shall have restricted gauging 
devices designed so that the maximum bleed valve opening is not larger 
than 0.055;inch; diameter, unless provided with an excess flow valve. 
Sounding tubes are prohibited for use with cargoes having a vapor 
pressure in excess of 14.7 p.s.i.a. at 115  deg.F, if carried in an 
uninsulated tank, or at 105  deg.F, if carried in an insulated tank.
    (2) When utilizing a sounding tube, the cargo tank vent system shall 
be designed to prevent the discharge of cargo through the sounding tube 
due to pressure build up in the cargo tank vapor space. (See 
Sec. 151.03-43) When cargoes carried at atmospheric pressure are 
required to have a restricted gauging device, open gauges may be 
provided in addition to restricted gauges for this type of cargo. 
However, open gauges may not be used while cargo transfer operations are 
actually being performed.
    (g) Fixed tube gauges are not acceptable as primary means of 
gauging. They may be used as a check on the calibration of other gauging 
devices.
    (h) For pressure-vessel type tanks, each automatic float, continuous 
reading tape or similar type gauge not mounted directly on the tank or 
dome shall be fitted with a shutoff device located as close to the tank 
as practicable. When an automatic float gauging device, which gauges the 
entire height of the tank, is used, a fixed tube gauge set in the range 
of 85 percent to 90 percent of the water capacity of the tank shall be 
provided in addition as a means of checking the accuracy of the 
automatic float gauge, or other alternate means acceptable to the 
Commandant may be used.
    (i) Gauge glasses of the columnar type are prohibited.
    (j) Flat sight glasses may be used in the design of automatic float 
continuous reading tape gauges. However such glasses shall be made of 
high strength material, suitable for the operating temperatures, of not 
less than one-half inch in thickness and adequately protected by a metal 
cover.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by USCG-2005-22329, 
70 FR 57183, Sept. 30, 2005]



                      Subpart 151.20_Cargo Transfer



Sec. 151.20-1  Piping--general.

    (a) Cargo piping systems shall be arranged and fabricated in 
accordance with this section and Subchapter F. The class of piping 
system required for a specific cargo shall be as listed in Table 151.05 
as a minimum; however, a

[[Page 180]]

higher class may be required when the actual service temperature or 
pressure so dictates. See Table 56.04-2 of this chapter.
    (b) Piping system components shall be suitable for use with the 
cargoes for which the barge is certificated, and shall be of materials 
listed in Subchapter F of this chapter, or such other material as the 
Commandant may specifically approve. All piping materials shall be 
tested in accordance with the requirements of Subchapter F of this 
chapter. The valve seat material, packing, gaskets, and all other 
material which comes into contact with the cargo shall be resistant to 
the chemical action of the cargoes for which the barge is certificated.
    (c) Cargo piping systems, when subject to corrosive attack of the 
cargo, and when serving cargo tanks which are required by this 
subchapter to be lined or coated, shall be constructed of, lined or 
coated with corrosion-resistant material. Vent systems shall be 
similarly constructed, lined, or coated up to and including the vent 
control device.
    (d) All piping systems components shall have a pressure rating at 
operating temperature (according to the applicable American National 
Standards Institute, Inc., pressure/temperature relations) not less than 
the maximum pressure to which the system may be subjected. Piping which 
is not protected by a relief valve, or which can be isolated from its 
relief valve, shall be designed for the greatest of:
    (1) The cargo vapor pressure at 115  deg.F.
    (2) The maximum allowable working pressure of the cargo tank.
    (3) The pressure of the associated pump or compressor relief valve.
    (4) The total discharge head of the associated pump or compressor 
where a discharge relief valve is not used.

The escape from cargo piping system relief valves shall be run to 
venting system or to a suitable recovery system. Provisions shall be 
made for pressure relief of all piping, valves, fittings, etc., in which 
excessive pressure build-up may occur because of an increase in product 
temperature.
    (e) Provisions shall be made by the use of offsets, loops, bends, 
expansion joints, etc., to protect the piping and tank from excessive 
stress due to thermal movement and/or movements of the tank and hull 
structure. Expansion joints shall be held to a minimum and where used 
shall be subject to individual approval by the Commandant.
    (f) Low temperature piping shall be isolated from the hull 
structure. Where necessary, arrangements to provide for the protection 
of the hull structure from leaks in low temperature systems in way of 
pumps, flanges, etc., shall be provided.
    (g) Connections to tanks shall be protected against mechanical 
damage and tampering. Underdeck cargo piping shall not be installed 
between the outboard side of cargo containment spaces and the skin of 
the barge, unless provision is made to maintain the minimum inspection 
and collision protection clearances (where required) between the piping 
and the skin. Cargo piping which is external to tanks, and is installed 
below the weather deck shall be joined by welding, except for flanged 
connections to shutoff valves and expansion joints.
    (h) Piping shall enter independent cargo tanks above the 
weatherdeck, either through or as close to the tank dome as possible.
    (i) Horizontal runs of cargo piping on integral tank barges may be 
run above or below the weatherdeck. When run below the weatherdeck, the 
following are applicable:
    (1) Horizontal runs located entirely within integral cargo tanks 
shall be fitted with a stop valve, located inside the tank that is being 
serviced and operable from the weatherdeck. There shall be cargo 
compatibility in the event of a piping failure.
    (2) Horizontal runs of cargo piping installed in pipe tunnels may 
penetrate gravity type tanks below the weatherdeck: Provided, That each 
penetration is fitted with a stop valve operable from the weatherdeck. 
If the tunnel is directly accessible from the weatherdeck without 
penetrating the cargo tank, the stop valve shall be located on the 
tunnel side. If the tunnel is not accessible from the weatherdeck, the 
valve shall be located on the tank side of the penetration.

[[Page 181]]

    (3) The tunnel shall comply with all tank requirements for 
construction, location, ventilation, and electrical hazard. There shall 
be cargo compatibility in the event of a piping failure.
    (4) The tunnel shall have no other openings except to the 
weatherdeck or a cargo pumproom.



Sec. 151.20-5  Cargo system valving requirements.

    For the purpose of adequately controlling the cargo, both under 
normal operating and casualty conditions, every cargo piping system 
shall be provided with one of the following sets of control valves and 
meet the requirements listed below. Cargo tanks, whether gravity or 
pressure vessel type, for cargoes having a saturated vapor pressure of 
10 pounds per square inch gauge or less at 115  deg.F (105  deg.F if the 
tank is insulated) shall be provided with a valving system designated as 
Gravity-1. Cargo tanks, whether gravity or pressure vessel type, for 
cargoes which are carried below ambient temperature and whose vapor 
pressure is maintained at 10 pounds per square inch gauge or below shall 
be provided with a valving system designated as Gravity-2. Cargo tanks 
for cargoes which have vapor pressures above 10 p.s.i.g. at 115  deg.F 
(105  deg.F if tank is insulated) shall be provided with a valving 
system designated as Pressure-1. Cargo tanks for cargoes which have 
vapor pressures above 10 pounds per square inch gauge at 115  deg.F (105 
 deg.F if tank is insulated) and which require greater protection due to 
their hazardous characteristics shall be provided with a valving system 
designated as Pressure-2. The requirements of paragraphs (a) through (d) 
of this section for stop valves or excess flow valves to be fitted at 
tank penetrations are not applicable to nozzles at which pressure vacuum 
or safety relief valves are fitted.
    (a) Gravity-1 (G-1). (1) One manually operated stop valve shall be 
installed on each tank filling and discharge line, located near the tank 
penetration.
    (2) One stop valve or blind flange shall be installed at each cargo 
hose connection. When a cargo hose connection is in use, it shall be 
provided with a stop valve; which may be part of the vessel's equipment 
or may be part of the shore facility and attached to the barge end of 
the loading hose. When a cargo hose connection is not in use, it may be 
secured with a blind flange.
    (3) If individual deepwell pumps are used to discharge the contents 
of each cargo tank, and the pumps are provided with a remote shutdown 
device, a stop valve at the tank is not required on the tank discharge 
line.
    (b) Gravity-2 (G-2). (1) One manually operated stop valve shall be 
installed on each tank penetration, located as close as possible to the 
tank.
    (2) One remote operated, quick closing shut-off valve shall be 
installed at each cargo hose connection.
    (3) A remote shutdown device shall be installed for all cargo 
handling machinery.
    (c) Pressure-1 (P-1). (1) One manually operated stop valve and one 
excess flow valve shall be installed on each tank penetration, located 
as close as possible to the tank.
    (2) One manually operated stop valve shall be installed at each 
cargo hose connection, when in use.
    (d) Pressure-2 (P-2). (1) One manually operated stop valve and one 
excess flow valve shall be installed at each tank penetration, located 
as close as possible to the tank.
    (2) One remote operated quick closing shutoff valve shall be 
installed at each cargo hose connection when in use.
    (3) No tank penetration shall be less than 1 inch diameter.
    (e) Cargo tank penetrations which are connections for gauging or 
measuring devices need not be equipped with excess flow or remote 
operated quick closing valves provided that the opening is constructed 
so that the outward flow of tank contents shall not exceed that passed 
by a No. 54 drill size (0.055-inch diameter).
    (f) The control system for any required quick closing shutoff valves 
shall be such that the valves may be operated from at least two remote 
locations on the vessel; if means of fire protection is required by 
Table 151.05, the control system shall also be provided with fusible 
elements designed to melt between 208  deg.F and 220  deg.F, which will 
cause the quick closing shutoff valves to close in case of fire. Quick

[[Page 182]]

closing shutoff valves shall be of the fail-closed (closed on loss of 
power) type and be capable of local manual operation. Quick closing 
shutoff valves shall operate from full open to full closed under all 
service conditions in not more than 10 seconds, without causing 
excessive pressure surges.
    (g) Excess flow valves, where required, shall close automatically at 
the rated closing flow of vapor or liquid as tested and specified by the 
manufacturer. The piping, including fittings, valves, and appurtenances 
protected by an excess flow valve, shall have a greater capacity than 
the rated closing flow of the excess flow valve. Excess flow valves may 
be designed with a bypass not to exceed 0.040-inch diameter opening to 
allow equalization of pressure, after an operating shutdown.
    (h) Suitable means shall be provided to relieve the pressure and 
remove liquid contents from cargo lines and hoses to the cargo tank or 
other safe location prior to effecting disconnections.



Sec. 151.20-10  Cargo system instrumentation.

    (a) Each tank operated at other than ambient temperature shall be 
provided with at least one remote reading temperature sensor located in 
the liquid phase of the cargo. The temperature gauge shall be located at 
the cargo handling control station or another approved location.
    (b) Where required, each tank equipped with safety relief valves 
shall be fitted with a pressure gauge which shall be located at the 
cargo handling control station or at another approved location.



Sec. 151.20-15  Cargo hose if carried on the barge.

    (a) Liquid and vapor line hose used for cargo transfer shall be of 
suitable material resistant to the action of the cargo. Hose shall be 
suitable for the temperatures to which it may be subjected and shall be 
acceptable to the Commandant.
    (b) Hose subject to tank pressure, or the discharge pressure of 
pumps or vapor compressors, shall be designed for a bursting pressure of 
not less than 5 times the maximum safety relief valve setting of the 
tank, pump, or compressor, whichever determines the maximum pressure to 
which the hose may be subjected in service.
    (c) Each new type of cargo hose, complete with end fittings, shall 
be prototype tested to a pressure not less than five times its specified 
maximum working pressure. The hose temperature during this prototype 
test shall duplicate the intended extreme service temperature. 
Thereafter, each new length of cargo hose produced shall be 
hydrostatically tested at ambient temperature to a pressure not less 
than twice its maximum working pressure nor more than two-fifths its 
bursting pressure. The hose shall be marked with its maximum working 
pressure, and if used in other than ambient temperature service, its 
maximum or minimum temperature.



Sec. 151.20-20  Cargo transfer methods.

    (a) Cargo transfer may be accomplished by means of gravity, pumping, 
vapor or gas pressurization, or fluid displacement unless otherwise 
provided in Subpart 151.50 of this part.
    (b) Vapor or gas pressurization may be used only in transferring 
cargo from pressure vessel type cargo tanks. The pressurizing vapor or 
gas lines shall be provided with safety relief device in the lines set 
to open at a pressure no greater than 90 percent of the set pressure of 
the cargo tank safety relief valve. The pressurizing line shall be 
fitted with a stop valve at the tank, and a check valve to prevent the 
accidental release of cargo through the pressure line.
    (c) Fluid displacement is permitted with either gravity or pressure 
vessel type cargo tanks. The displacing fluid shall enter the tank under 
low relative pressure. The fluid entry line shall be fitted with a 
safety relief valve set to lift at a pressure no higher than 80 percent 
of the cargo tank safety relief valve setting.
    (d) When cargo vapors are flammable, combustible or toxic, cargo 
filling lines entering the top of the tank shall lead to a point at or 
near the bottom. Spray filling lines, discharging near the top of the 
tank, may be fitted in lieu of, or in addition to, the above cargo 
filling lines.

[[Page 183]]



                  Subpart 151.25_Environmental Control



Sec. 151.25-1  Cargo tank.

    When carrying certain commodities regulated by this subchapter, one 
of the following types of cargo protection may be required, within the 
main cargo tank, and in some cases, in the space between the primary and 
secondary barriers.
    (a) Inerted. All vapor spaces within the cargo tank are filled and 
maintained with a gas or vapor which will not support combustion and 
which will not react with the cargo.
    (b) Padded. All vapor spaces within the cargo tanks are filled and 
maintained with a liquid, gas (other than air), or vapor which will not 
react with the cargo.
    (c) Ventilated (forced). Vapor space above the liquid surface in the 
tank is continuously swept with air by means of blowers or other 
mechanical devices requiring power.
    (d) Ventilated (natural). Vapor space above the liquid surface in 
the tank is continuously swept with atmospheric air without the use of 
blowers or other mechanical devices requiring power (e.g., ``chimney-
effect'' ventilation).
    (e) Dry. All vapor space within the cargo tank is filled and 
maintained with a gas or vapor containing no more than 100 ppm water.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-100, 54 FR 
40040, Sept. 29, 1989]



Sec. 151.25-2  Cargo handling space.

    Pump rooms, compressor rooms, refrigeration rooms, heating rooms, 
instrument rooms or other closed spaces regularly entered by operating 
personnel, in which work is performed on the cargo or in which the cargo 
movement is locally controlled, may be required to be fitted with one of 
the following types of ventilation:
    (a) Forced ventilation. The forced ventilation system shall be 
designed to insure sufficient air movement through these spaces to avoid 
the accumulation of toxic or flammable vapors and to insure sufficient 
oxygen to support life, and, in any event, the ventilation system shall 
have a minimum capacity sufficient to permit a change of air every 3 
minutes.
    (b) Natural ventilation. The natural ventilation system shall be 
designed to insure sufficient air movement to avoid the accumulation of 
toxic or flammable vapors and to insure sufficient oxygen to support 
life.



               Subpart 151.30_Portable Fire Extinguishers



Sec. 151.30-1  Type.

    When required by Table 151.05, approved portable fire extinguishers 
shall be installed in accordance with Subpart 34.50 of this chapter. The 
fire extinguishing media shall be dry chemical or other suitable agent 
for all locations.



      Subpart 151.40_Temperature or Pressure Control Installations



Sec. 151.40-1  Definitions.

    This section defines the various methods by which the cargo may be 
heated or cooled.
    (a) Boiloff. Cargo pressure and temperatures are maintained by 
permitting the cargo to boil naturally and the cargo vapor thus 
generated removed from the tank by venting.
    (b) External cargo cooling--(1) Cargo vapor compression. A 
refrigeration system in which the cargo vapors generated within the tank 
are withdrawn, compressed, and the lower energy vapor or its condensate 
returned to the tank.
    (2) External heat exchange. A refrigeration system in which the 
cargo vapor or liquid is cooled outside the cargo tanks by being passed 
through a heat exchanger. Refrigeration is not accomplished by direct 
compression of the cargo.
    (c) Internal heat exchange. A refrigeration system in which a 
cooling fluid is passed through heat transfer coils immersed in the 
cargo tank liquid or vapor phases.
    (d) Tank refrigeration. A refrigeration system in which the cooling 
fluid is passed around the cargo tank exterior in order to remove heat 
from the tank or its surroundings.

[[Page 184]]

    (e) No refrigeration. A system that allows the liquefied gas to warm 
up and increase in pressure. The insulation and tank design pressure 
shall be adequate to provide for a suitable margin for the operating 
time and temperatures involved.
    (f) Tank heating. (1) A system in which the cargo is heated by means 
of steam or other heat transfer fluid running through coils within or 
around the tank. The cargo itself does not leave the tank.
    (2) A recirculating system in which the cargo leaves the tank, is 
pumped through a heater and then returned to the tank.



Sec. 151.40-2  Materials.

    Materials used in the construction of temperature or pressure 
control systems shall be suitable for the intended application and meet 
the requirements of Subchapter F and the Special Requirements section of 
this subchapter.



Sec. 151.40-5  Construction.

    Construction of machinery or equipment, such as heat exchangers, 
condensers, piping, etc., associated with temperature or pressure 
control systems shall meet the requirements of Subchapter F of this 
chapter. The electrical portions of these installations shall meet the 
requirements of Subchapter J of this chapter.



Sec. 151.40-10  Operational requirements.

    Control systems, required by Table 151.05 shall be provided with an 
audible or visual high cargo temperature or high cargo pressure alarm 
which is discernible at the towboat. The alarm shall operate when either 
the pressure or the temperature exceeds the operating limits of the 
system. The alarm may monitor either pressure or temperature, but must 
be independent of the control system.



Sec. 151.40-11  Refrigeration systems.

    (a) Boiloff systems. The venting of cargo boiloff to atmosphere 
shall not be used as a primary means of temperature or pressure control 
unless specifically authorized by the Commandant.
    (b) Vapor compression, tank refrigeration, and secondary 
refrigeration systems: The required cooling capacity of refrigeration 
systems shall be sufficient to maintain the cargo at design operating 
conditions with ambient temperature of 115  deg.F still air and 90 
deg.F still water. The number and arrangement of compressors shall be 
such that the required cooling capacity of the system is maintained with 
one compressor inoperative. Portions of the system other than the 
compressors need not have standby capacity.



                        Subpart 151.45_Operations



Sec. 151.45-1  General.

    (a) Barges certificated as tank barges (Subchapter D of this 
chapter) or cargo barges (Subchapter I of this chapter) for the carriage 
of cargoes regulated by this subchapter shall meet all applicable 
requirements for operations in the appropriate subchapter; in addition, 
requirements prescribed in this subpart shall apply to either type of 
certification.
    (b) [Reserved]



Sec. 151.45-2  Special operating requirements.

    (a) The requirements of this section shall apply to all barges 
carrying in bulk any cargoes regulated by this subchapter; however, the 
provisions of this section are not applicable to such barges when empty 
and gas-freed.
    (b) When it is necessary to operate box or square-end barges as lead 
barges of tows, the person in charge of the towing vessel shall control 
the speed to insure protection against diving and swamping of such 
barges, having due regard to their design and freeboard, and to the 
operating conditions.
    (c) No cargo tank hatch, ullage hole, or tank cleaning openings 
shall be opened or remain open except under the supervision of the 
person in charge, except when the tank is gas free.
    (d) Barges, when tendered to the carrier for transportation, shall 
have all bilges and void spaces (except those used for ballasting) 
substantially free of water. Periodic inspections and necessary pumping 
shall be carried out to insure maintenance of such water-free condition 
in order to minimize the free surface effects, both in longitudinal and 
transverse directions. Except when

[[Page 185]]

otherwise considered necessary for inspection or pumping, all hatch 
covers and other hull closure devices for void spaces and hull 
compartments other than cargo spaces shall be closed and secured at all 
times.
    (e) Cargo signs and cards. (1) Warning signs shall be displayed on 
the vessel, port and starboard, facing outboard without obstructions, at 
all times except when the vessel is gas free. The warning sign shall be 
rectangular and a minimum of 3 feet wide and 2 feet high. It shall be of 
sufficient size to accommodate the required alerting information, which 
shall be shown in black block style letters and numerals (characters) at 
least 3 inches high on a white background. The minimum spacing between 
adjacent words and lines of characters shall be 2 inches. The minimum 
spacing between adjacent characters shall be one-half inch. All 
characters shall have a minimum stroke width of one-half inch and shall 
be a minimum of 2 inches wide, except for the letters ``M'' and ``W'', 
which shall be a minimum of 3 inches wide, and except for the letter 
``I'' and the Numeral ``1'', which may be \1/2\-inch wide. The signs 
shall have a 2-inch minimum white border clear of characters. The signs 
shall be maintained legible. The alerting information shall include the 
following:

                                 Warning

                             Dangerous Cargo

    (This sign may be covered or removed when Subchapter O commodities 
are not being carried.)

                               No Visitors

                               No Smoking

    (This sign may be removed or covered when the commodity is not 
flammable or combustible.)

                             No Open Lights

    (This sign may be removed or covered when the commodity is not 
flammable or combustible.)

    (2)(i) Names and locations of all cargoes will be displayed in a 
readily discernible manner on all barges carrying one or more 
commodities regulated by this subchapter. This may be an individual sign 
at or on each tank or by a single sign similar to the following example:

 
                            Tank No.                              Cargo
 
IP.............................................................   /xxxx/
IS.............................................................   /xxxx/
2P.............................................................   /xxxx/
2S.............................................................   /xxxx/
 


These signs may be printed, handwritten, permanent or changeable, but be 
visible and readable at all times. These signs should be as readable, as 
those specified in paragraph (e)(1) of this section. Cargoes regulated 
by other subchapters will be included whenever carried simultaneously 
with commodities regulated by this subchapter.
    (ii) When the dangerous cargo barge is carrying only a single 
product, the Warning Sign required by paragraph (e)(1) of this section 
can be considered as meeting the requirements for the cargo location 
sign. The name of the commodity shall be added to the Warning Sign.
    (3) A cargo information card for each cargo regulated by this 
subchapter shall be carried on the bridge or in the pilot house of the 
towing vessel, readily available for use by the person in charge of the 
watch. This information card shall also be carried aboard the barge, 
mounted near the Warning Sign required by paragraph (e)(1) of this 
section, in such position as to be easily read by a man standing on the 
deck of the barge. The minimum card size shall be 7"  x  9\1/2\". The 
card shall have legible printing on one side only. The card shall be 
laminated in clear plastic or otherwise made weatherproof. The following 
data shall be listed:
    (i) Cargo identification and characteristics. Identification of the 
cargo, as listed in Table 151.05, its appearance and odor. A statement 
of the hazards involved and instructions for the safe handling of the 
cargo and, as applicable, the need for special cargo environments.
    (ii) Emergency procedures. Precautions to be observed in the event 
of spills, leaks, or equipment or machinery breakdown and/or 
uncontrolled release of the cargo into the waterway or atmosphere. 
Precautions to be observed in the event of exposure of personnel to 
toxic cargoes.

[[Page 186]]

    (iii) Firefighting procedures. Precautions to be observed in the 
event of a fire occurring on or adjacent to the barge, and enumeration 
of firefighting media suitable for use in case of a cargo fire.
    (f) Surveillance. During the time the cargo tanks contain any amount 
of liquid or gaseous dangerous cargoes requiring Type I or Type II barge 
hulls, the barge shall be under surveillance, as set forth in this 
paragraph:
    (1) The licensed operator, person in command, and mate of a vessel 
towing a tank barge that need not be manned, and each of them, shall be 
responsible for monitoring the security and integrity of the tank barge 
and for ensuring adherence to proper safety precautions. These 
responsibilities include, but are not limited to--
    (i) Ensuring that every tank barge added to the tow has all tank 
openings properly secured; has its freeing-ports and scuppers, if any, 
unobstructed; meets any loadline or freeboard requirements; and neither 
leaks cargo into the water, voids, or cofferdams nor leaks water into 
the tanks, voids, or cofferdams;
    (ii) Ensuring that every tank barge in the tow is properly secured 
within the tow;
    (iii) Ensuring that periodic checks are made of every tank barge in 
the tow for leakage of cargo into the water, voids, or cofferdams and 
for leakage of water into the tanks, voids, or cofferdams;
    (iv) Knowing the cargo of every tank barge in the tow, all hazards 
associated with the cargo, and what to do on discovery of a leak;
    (v) Ensuring that the crew of the vessel know the cargo of every 
tank barge in the tow, all hazards associated with the cargo, and what 
to do on discovery of a leak;
    (vi) Reporting to the Coast Guard any leaks from a tank barge in the 
tow into the water, as required by 33 CFR 151.15; and
    (vii) Ensuring that the crew of the vessel and other personnel in 
the vicinity of the tank barges in the tow follow the proper safety 
precautions for tank vessels, and that no activity takes place in the 
vicinity of the barges that could create a hazard.
    (2) A towing vessel engaged in transporting such unmanned barges 
shall not leave them unattended. When a barge is moored, but not gas 
free, it shall be under the care of a watchman who may be a member of 
the complement of the towing vessel, or a terminal employee, or other 
person. This person shall be responsible for the security of the barge 
and for keeping unauthorized persons off the barge. Such person shall be 
provided with, read, and have in his possession for ready reference the 
information cards required by paragraph (e) of this section.
    (g) All cargo hatches shall be closed, dogged down, or otherwise 
tightly secured.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-100, 54 FR 
40040, Sept. 29, 1989; CGD 79-116, 60 FR 17158, Apr. 4, 1995]



Sec. 151.45-3  Manning.

    Except as provided for in this section, barges need not be manned 
unless in the judgment of the Officer in Charge, Marine Inspection, such 
manning is necessary for the protection of life and property and for 
safe operation of the vessel. Vessels requiring manning for safe 
operation shall be subject to additional requirements as determined by 
the Commandant. Towing vessels, while towing barges which are not 
required to be manned, shall be provided with and have on board the 
information card required by Sec. 151.45-2(e)(3). This card shall be in 
the possession of the master or person in charge.



Sec. 151.45-4  Cargo-handling.

    (a) On a United States tank barge subject to inspection--
    (1) The owner and operator of the vessel, and his or her agent, and 
each of them, shall ensure that no transfer of liquid cargo in bulk or 
cleaning of a cargo tank takes place unless under the supervision of a 
qualified person designated as the person in charge of the transfer or 
the cleaning under Subpart C of 33 CFR part 155.
    (2) The person in charge of the transfer shall ensure that enough 
qualified personnel are on duty to safely transfer liquid cargo in bulk 
or to safely clean cargo tanks.
    (b) Closing of sea and ballast valves. All sea and ballast valves 
are to be

[[Page 187]]

properly aligned and lashed, or sealed in their correct position prior 
to beginning cargo transfer operations. Under no circumstances shall 
such valves be secured by locks.
    (c) Connecting for cargo transfer. (1) Movement of the vessel shall 
be considered when making the cargo connections to insure safe cargo 
transfer. Suitable material shall be used in joints and in couplings 
when making connections to insure that they are tight. Under no 
circumstances shall less than three bolts be used in a bolted flanged 
coupling.
    (2) When cargo connections are supported by the vessel's tackle, the 
person in charge of the transfer operations shall inspect the vessel to 
insure that sufficient tackles are used.
    (3) Pans or buckets shall be placed under cargo hose connections.
    (4) Cargo transfer operations for any cargo requiring a PV or safety 
relief venting device in Table 151.05 shall be performed with cargo 
hatch covers closed.
    (d) Inspection prior to transfer of cargo. Prior to the transfer of 
cargo, the person in charge of the transfer operation shall inspect the 
barge and other cargo equipment to assure himself that the following 
conditions exist:
    (1) The Certificate of Inspection is endorsed for the products to be 
loaded. Loading restrictions, if any, should be noted.
    (2) Warning signs are displayed as required.
    (3) Cargo information cards for the product are aboard.
    (4) No repair work in way of cargo space is being carried out.
    (5) Cargo connections and hatch covers conform with the provisions 
of paragraph (c) of this section and cargo valves are properly set.
    (6) All connections for cargo transfer have been made to the 
vessel's fixed pipeline system.
    (7) In transferring flammable or combustible cargoes, there are no 
fires or open flames present on the deck, or in any compartment which is 
located on, facing, open or adjacent to the part of the deck on which 
cargo connections have been made.
    (8) The shore terminal or other tank vessel concerned has reported 
itself in readiness for transfer of cargo.
    (9) All sea valves are properly set and those connected to the cargo 
piping are closed.
    (10) When transferring flammable or combustible cargoes that a 
determination was made as to whether or not boiler and/or galley fires 
can be maintained with reasonable safety.
    (e) Duties of the person in charge during transfer operations. The 
person in charge of the transfer operations shall control the operations 
as follows:
    (1) Supervise the operation of the cargo system valves.
    (2) Start transfer of cargo slowly.
    (3) Observe cargo connections and hose for leakage.
    (4) Observe operating pressure on cargo systems.
    (5) Comply with loading limitations placed on the vessel by the 
Certificate of Inspection, if, any, for the purpose of not overloading 
individual tanks or the vessel.
    (6) Observe the loading rate for the purpose of avoiding overflow of 
the tanks.
    (f) Cargo transfer operations shall not be started or, if started, 
shall be discontinued under the following conditions:
    (1) During severe electrical storms.
    (2) If a fire occurs on the barge, the wharf or in the immediate 
vicinity.
    (3) If potentially dangerous leakage occurs.
    (g) No vessel shall come alongside or remain alongside a barge in 
way of its cargo tanks while it is transferring cargo unless the 
conditions then prevailing are mutually acceptable to the persons in 
charge of cargo handling.
    (h) Auxiliary steam, air, fuel, or electric current. When 
discharging cargo from one or more barges, the towing vessel may furnish 
steam, air, fuel, or electric current for pumps on barges or dock, but 
in no case shall the cargo pass through or over the towing vessel.
    (i) Termination of transfer operations. When transfer operations are 
completed, the valves on cargo connections on the vessel shall be 
closed. The cargo connections shall be drained of cargo.
    (j) Transfer of other cargo or stores on a barge. (1) Packaged 
goods, freight,

[[Page 188]]

and ship's stores shall not be loaded or discharged during the loading 
of flammable cargoes except by permission of the person in charge of the 
transfer operation. Explosives shall not be loaded or carried on any 
barge containing products regulated by this subchapter.
    (2) Where package and general cargo is carried directly over bulk 
cargo tanks, it shall be properly dunnaged to prevent chafing of metal 
parts and securely lashed or stowed.
    (k) Transportation of other cargo or stores on barges. Barges may be 
permitted to transport deck cargoes directly over bulk cargo spaces when 
the nature of such deck cargoes and the methods of loading and unloading 
same do not create an undue hazard. Such barges shall have their decks 
properly dunnaged to prevent chafing between the steel parts of the 
vessel and the deck cargo.
    (l) Deck construction must be adequate to support the intended load. 
Provisions for carrying deck cargo shall be endorsed on the Certificate 
of Inspection by the Officer in Charge, Marine Inspection.
    (m) Emergencies. In case of emergencies, nothing in the regulations 
in this subchapter shall be construed as preventing the person in charge 
of transfer operations from pursuing the most effective action in his 
judgment for rectifying the conditions causing the emergency.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970; 35 FR 6431, Apr. 22, 1970, as 
amended by CGD 75-59, 45 FR 70273, Oct. 23, 1980; CGD 81-059, 54 FR 151, 
Jan. 4, 1989; CGD 79-116, 60 FR 17158, Apr. 4, 1995]



Sec. 151.45-5  Open hopper barges.

    (a) All open hopper barges not constructed or modified in 
conformance with the provisions of Subpart 151.10 of this part when 
carrying in bulk any cargoes regulated by this subchapter shall meet the 
provisions of this section. However, the provisions of this section are 
not applicable to such barges when empty (not necessarily cleaned or 
gas-freed).
    (1) Except as otherwise provided in this section, no such open 
hopper type barge shall be placed as lead barge in any tow. These barges 
shall be placed in protected positions within the tow so that the danger 
from diving or swamping will be minimized. Where, due to operating 
conditions, compliance with this paragraph is impossible, the provisions 
of paragraph (a)(3) of this section apply. The person in charge of the 
towing vessel shall be responsible for compliance with this paragraph.
    (2) No such open hopper type barge shall be moved from a loading 
facility unless all void spaces and bilges are substantially free of 
water. Periodic inspections and necessary pumping shall be carried out 
to insure the maintenance of such water-free conditions, in order to 
minimize the free surface effect in both the longitudinal and transverse 
directions. Except when considered necessary for inspection or pumping, 
all hatch covers and other hull closure devices for void spaces and hull 
compartments shall be closed and secured at all times. In the case of 
unmanned barges, the person in charge of the towing vessel shall be 
deemed to be in charge of the barge, and all requirements to be carried 
out on the barge shall be carried out by or under the direction of this 
person.
    (3) When an open hopper type barge is in an exposed position, such 
that protection from swamping provided by adjoining barges cannot be 
obtained from the location within the tow, it shall be the 
responsibility of the person in charge of the towing vessel to control 
speed so as to insure protection against diving and swamping of the 
barge, having regard to its design and freeboard, and other operating 
conditions.
    (b) To show that special operating requirements apply to a specific 
open hopper type barge, additional placards or signs shall be displayed 
in at least four different locations on the barge when the cargoes 
subject to this part are carried in any form in the cargo tanks. The 
placards or signs shall be posted on the barge approximately amidships 
on each side and near the centerline fore and aft facing outboard. 
Racks, or other suitable means for mounting such placards or signs, 
shall be so arranged as to provide clear visibility and shall be 
protected from becoming readily damaged or obscured. The placards or 
signs shall be at least

[[Page 189]]

equal in dimensions to the DOT standard tank car ``Dangerous'' placard 
(10\3/4\ inches square or larger) and shall display a circle (10 inches 
in diameter or larger) with alternating quadrants of white and red, and 
so mounted that the red quadrants are centered on the vertical axis. The 
shipper and/or owner of the barge shall be responsible for the 
installation of the required placards or signs, including maintenance of 
them while such barge is in temporary storage with cargo aboard. The 
person in charge of the towing vessel shall be responsible for the 
continued maintenance of the placards or signs while such barge is in 
transit.



Sec. 151.45-6  Maximum amount of cargo.

    (a) Tanks carrying liquids or liquefied gases at ambient 
temperatures regulated by this subchapter shall be limited in the amount 
of cargo loaded to that which will avoid the tank being liquid full at 
105  deg.F if insulated, or 115  deg.F if uninsulated. If specific 
filling densities are designated in Subpart 151.50 of this part, they 
shall take precedence over that noted above.
    (b) Refrigerated and semirefrigerated tanks shall be filled so that 
there is an outage of at least 2 percent of the volume of the tank at 
the temperature corresponding to the vapor pressure of the cargo at the 
safety relief valve setting. A reduction in the required outage may be 
permitted by the Commandant when warranted by special design 
considerations. Normally, then, the maximum volume to which a tank may 
be loaded is:

VL = 0.98drV  dL

where:

VL = Maximum volume to which tank may be loaded.
V = Volume of tank.
dr = Density of cargo at the temperature required for a cargo 
          vapor pressure equal to the relief valve setting.
dL = Density of cargo at the loading temperature and pressure.



Sec. 151.45-7  Shipping papers.

    Each barge carrying dangerous cargo shall have on board a bill of 
lading, manifest, or shipping document giving the name of shipper, 
location of the loading point, and the kind, grade, and approximate 
quantity by compartment of each cargo in the barge. Such manifest or 
bills of lading may be made out by the shipper, master of the towing 
vessel, owner, or agent of the owner. However, in the case of unmanned 
barges the master of the towing vessel shall either have a copy of the 
shipping papers for each barge in his tow or he shall make an entry in 
the towing vessel's log book giving the name of the shipper, location 
where the barge was loaded, and the kind, grade, and quantity of cargo 
by compartment in the barge. The barge shall not be delayed in order to 
secure the exact quantities of cargo.



Sec. 151.45-8  Illness, alcohol, drugs.

    A person who is under the influence of liquor or other stimulants, 
or is so ill as to render him unfit to perform service shall not be 
permitted to perform any duties on the barge.



Sec. 151.45-9  Signals.

    While fast to a dock, a vessel during transfer of bulk cargo shall 
display a red flag by day or a red light by night, which signal shall be 
so placed that it will be visible on all sides. When at anchor, a vessel 
during transfer of bulk cargo shall display a red flag by day, placed so 
that it will be visible on all sides. This flag may be metallic.



                   Subpart 151.50_Special Requirements

    Editorial Note: Nomenclature changes to subpart 151.50 of part 151 
appear by CGD-95-072, 60 FR 50465, Sept. 29, 1995, and CGD-96-041, 61 FR 
50732, Sept. 27, 1996.



Sec. 151.50-1  General.

    Special requirements found in this subpart pertain to specific 
cargoes and to similar groups of cargoes. These requirements are in 
addition to and take precedence over any other requirements found in 
these regulations.



Sec. 151.50-5  Cargoes having toxic properties.

    When table 151.05 refers to this section, the following apply:
    (a) [Reserved]
    (b) Independent tanks shall be designed and tested for a head of at 
least 8 feet above the top of the tank using

[[Page 190]]

the specific gravity of the product to be carried. In addition, tank 
design calculations shall demonstrate that the tank can withstand, 
without rupture, a single loading to the highest level to which the 
product may rise, if that exceeds 8 feet. In general, plate less than 
five-sixteenths inch in thickness shall not be used in the fabrication 
of independent tanks unless otherwise approved.
    (c)(1) Cargo tanks transporting liquids having a Reid vapor pressure 
exceeding 14 pounds per square inch absolute or vented at a gauge 
pressure exceeding 4 pounds per square inch, or where air or water 
pressure is used to discharge the cargo, shall be fabricated as arc-
welded unfired pressure vessels.
    (2) Unfired pressure vessel cargo tanks shall be designed for a 
pressure not less than the vapor pressure, in pounds per square inch 
gauge, of the lading at 115  deg.F, or the maximum air or water pressure 
used to discharge the cargo, whichever is greater, but in no case shall 
the design pressure of such tanks be less than 30 pounds per square inch 
gauge.
    (d) Piping. (1) The pumps and piping used for cargo transfer shall 
be independent of all other piping.
    (2) Where multiple cargoes are carried, and the cargo piping 
conveying cargoes covered under this section are led through cargo tanks 
containing other products, the piping shall be encased in a tunnel.
    (3) Where cargo lines handling other products, or bilge and ballast 
piping are led through tanks containing cargoes covered by this section, 
the piping shall be enclosed in a tunnel.
    (e) Gravity type cargo tanks shall be fitted with an approved 
pressure-vacuum relief valve of not less than 2\1/2\-inch size, which 
shall be set at a pressure of not less than 3 pounds per square inch 
gauge, but not in excess of the design pressure of the tank.
    (f) The discharge fittings from each safety relief or pressure 
vacuum relief valve shall be directed in such a manner as to not impinge 
on another tank, piping or any other equipment which would increase the 
fire hazard should burning products be discharged from the safety or 
pressure vacuum relief valve as a result of a fire or other casualty. In 
addition, the discharges shall be directed away from areas where it is 
likely that persons might be working and as remote as practicable from 
ventilation inlets and ignition sources. A common discharge header may 
be employed if desired. The area near the discharge fittings shall be 
clearly marked as a hazardous area.
    (g) A means shall be provided for either the reclamation or safe 
venting of vapors during the loading and unloading operations. For this 
purpose the safety relief or pressure vacuum relief valve shall be 
provided with a valved bypass to a vapor return line shore connection 
which shall be used whenever vapor return shore facilities are 
available. In the event vapors must be vented to the atmosphere, a vent 
riser shall extend at least 12 feet above the highest level accessible 
to personnel. The vent riser may be collapsible for ease of stowage when 
not in use. Vapor return lines or vent risers for tanks carrying the 
same class product may be connected to a common header system if 
desired. Tanks carrying cargoes covered by this section shall be vented 
independent of tanks carrying other products.
    (h) The pump room ventilation outlet duct exhausts shall terminate 
at a distance of at least 6 feet above the enclosed space or pump room 
and at least 6 feet from any entrance to the interior part of the 
vessel. The discharge end of the exhaust ducts shall be located so as to 
preclude the possibility of recirculating contaminated air through the 
pump room, or other spaces where personnel may be present.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-100, 54 FR 
40040, Sept. 29, 1989]



Sec. 151.50-6  Motor fuel antiknock compounds.

    When transporting motor fuel antiknock compounds containing 
tetraethyl lead and tetramethyl lead the requirements listed in this 
section shall be observed.
    (a) Tanks used for these cargoes shall not be used for the 
transportation of any other cargo except those commodities to be used in 
the manufacture of tetraethyl lead and tetramethyl lead.

[[Page 191]]

    (b) Pump rooms shall be equipped with forced ventilation with 
complete air change every 2 minutes. Air analysis shall be run for lead 
content to determine if the atmosphere is satisfactory prior to 
personnel entering the pump room.
    (c) Entry into cargo tanks used for the transportation of these 
cargoes is not permitted.
    (d) No internal tank inspection is required. If it is desired to 
internally inspect tanks used for these cargoes, the Commandant must be 
notified in advance before such inspection is made.
    (e) The provisions of Sec. 151.50-5 shall also be met as a 
requirement for shipping antiknock compounds containing tetraethyl lead 
and tetramethyl lead.



Sec. 151.50-10  Alkylene oxides.

    (a) For the purpose of this part, alkylene oxides are considered to 
be ethylene oxide and propylene oxide.
    (b) Alkylene oxides transported under the provisions of this part 
shall be acetylene free.
    (c)(1) No other product may be transported in tanks certified for an 
alkylene oxide except that the Commandant may approve subsequent 
transportation of other products and return to alkylene oxide service if 
tanks, piping and auxiliary equipment are adequately cleaned to the 
satisfaction of the Marine Inspector.
    (2) Unless authorized by the Commandant, no other kind of cargo 
except methane, ethane, propane, butane and pentane shall be on board a 
tank vessel certificated for the carriage of an alkylene oxide at the 
same time an alkylene oxide in either the liquid or vapor state is 
present in any cargo tank. Alkylene oxide tanks shall not be installed 
in tanks intended for any other cargo.
    (d) All valves, flanges, fittings, and accessory equipment shall be 
of a type suitable for use with the alkylene oxides and shall be made of 
steel or stainless steel, or other materials acceptable to the 
Commandant. Impurities of copper, magnesium and other acetylide-forming 
metals shall be kept to a minimum. The chemical composition of all 
material used shall be submitted to the Commandant for approval prior to 
fabrication. Disks or disk faces, seats and other wearing parts of 
valves shall be made of stainless steel containing not less than 11 
percent chromium. Mercury, silver, aluminum, magnesium, copper, and 
their alloys shall not be used for any valves, gauges, thermometers, or 
any similar devices. Gaskets shall be constructed of spirally wound 
stainless steel with ``Teflon'' or other suitable material. All packing 
and gaskets shall be constructed of materials which do not react 
spontaneously with or lower the autoignition temperature of the alkylene 
oxides.
    (e) The pressure rating of valves, fittings, and accessories shall 
be not less than the maximum pressure for which the cargo tank is 
designed, or the shutoff head of the cargo pump, whichever is greater, 
but in no case less than 150 pounds per square inch. Welded fittings 
manufactured in accordance with A.N.S.I. Standards shall be used 
wherever possible, and the number of pipe joints shall be held to a 
minimum. Threaded joints in the cargo liquid and vapor lines are 
prohibited.
    (f) The thermometer shall terminate in the liquid space and shall be 
attached to the shell by welding with the end of the fitting being 
provided with a gastight screwed plug or bolted cover.
    (g) Automatic float continuous reading tape gauge, and similar 
types, shall be fitted with a shutoff valve located as close to the tank 
as practicable, which shall be designed to close automatically in the 
event of fracture of the external gauge piping. An auxiliary gauging 
device shall always be used in conjunction with an automatic gauging 
device.
    (h) Filling and discharge piping shall extend to within 4 inches of 
the bottom of the tank or sump pit if one is provided.
    (i) Venting. (1) The discharge fittings from each safety relief or 
pressure vacuum relief valve shall be directed in such a manner as to 
not impinge on another tank, piping or any other equipment which would 
increase the fire hazard should burning products be discharged from the 
safety or pressure vacuum relief valve as a result of a fire or other 
casualty. In addition, the discharges shall be directed away from areas 
where it is likely that persons

[[Page 192]]

might be working and as remote as practicable from ventilation inlets 
and ignition sources. A common discharge header may be employed if 
desired. The area near the discharge fittings shall be clearly marked as 
a hazardous area.
    (2) A means shall be provided for either the reclamation or safe 
venting of vapors during the loading and unloading operations. For this 
purpose, the safety relief or pressure vacuum relief valve shall be 
provided with a valved bypass to a vapor return line shore connection 
which shall be used whenever vapor return shore facilities are 
available. In the event vapors must be vented to the atmosphere, a vent 
riser shall be connected to the vapor return line and extend at least 12 
feet above the highest level accessible to personnel. The vent riser may 
be collapsible for ease of stowage when not in use. The vent riser shall 
not be connected to a safety relief or pressure vacuum valve. Vapor 
return lines or vent risers for tanks carrying the same class product 
may be connected to a common header system if desired. Tanks carrying 
alkylene oxides shall be vented independent of tanks carrying other 
products.
    (3) The outlet of each vent riser shall be fitted with acceptable 
corrosion-resistant flame screen of suitable material or a flame 
arrester suitable for use with alkylene oxide.
    (j) Ventilation. (1) All enclosed spaces within the hull shall be 
vented or ventilated in accordance with the provisions of this 
subchapter except as otherwise provided for in this subpart.
    (2) The enclosed spaces in which the cargo tanks are located shall 
be inerted by injection of a suitable inert gas or shall be well 
ventilated.
    (3) The enclosed spaces in which the cargo tanks are located, if an 
inerting system is not installed, shall be fitted with forced 
ventilation of such capacity to provide a complete change of air every 
three minutes and arranged in such a manner that any vapors lost into 
the space will be removed. The ventilation system shall be in operation 
at all times cargo is being loaded or discharged. No electrical 
equipment shall be fitted within the spaces or within ten feet of the 
ventilation exhaust from these spaces.
    (4) All ventilation machinery shall be of nonsparking construction 
and shall not provide a source of vapor ignition.
    (5) Each vent shall be fitted with a flame screen of corrosion 
resistant wire which is suitable for use with the alkylene oxide.
    (k)(1) Flexible metal hose fabricated of stainless steel or other 
acceptable material, resistant to the action of the alkylene oxide, 
shall be fitted to the liquid and vapor lines during cargo transfer.
    (2) The hose shall be marked with the maximum pressure guaranteed by 
the manufacturer, and with his certification with the words ``Certified 
for _____ Oxide.''
    (3) Cargo hose intended for alkylene oxide service shall not be used 
for any other products except those which are compatible with the 
alkylene oxide.
    (l) Vessel shall be electrically bonded to the shore piping prior to 
connecting the cargo hose. This electrical bonding shall be maintained 
until after the cargo hose has been disconnected and any spillage has 
been removed.
    (m) Cargo shall be discharged by pumping or by displacement with 
nitrogen or other acceptable inert gas. In no case shall air be allowed 
to enter the system. During loading and unloading operations, the vapor 
shall not be discharged to the atmosphere. Provisions shall be made to 
return all displaced vapor to the loading facility. The loading rate and 
the pressure applied to the tank to discharge the cargo shall be so 
limited to prevent opening the safety relief valves.
    (n) During cargo transfer, a water hose with pressure to the nozzle, 
when atmospheric temperatures permit, shall be connected to a water 
supply for immediate use during filling and discharge operations and any 
spillage of alkylene oxide shall be immediately washed away. This 
requirement can be met by facilities provided from shore.
    (o) Prior to disconnecting shore lines, the pressure in the liquid 
and vapor lines shall be relieved through suitable valves installed at 
the loading header. The liquid and vapor discharged from these lines 
shall not be discharged to atmosphere.
    (p) The safety relief valves shall be tested by liquid, gas, or 
vapor pressure

[[Page 193]]

at least once every 2 years to determine the accuracy of adjustment and, 
if necessary, shall be reset. Alkylene oxides shall not be used as the 
testing medium.
    (q) The special requirements for ethylene oxide contained in 
Sec. 151.50-12 and for propylene oxide contained in Sec. 151.50-13 shall 
also be observed.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 85-061, 54 FR 
50966, Dec. 11, 1989]



Sec. 151.50-12  Ethylene oxide.

    (a)(1) Ethylene oxide shall be carried in fixed, independent, 
pressure vessel type cargo tanks, designed, constructed, arranged and, 
if necessary, equipped with machinery to maintain the cargo temperature 
below 90  deg.F except as otherwise provided for in paragraph (a)(3) of 
this section.
    (2) Ethylene oxide shall be loaded at a temperature below 70  deg.F.
    (3) When ethylene oxide is to be transported at or near atmospheric 
pressure, the Commandant may permit the use of alternate methods of 
storage which are consistent with the minimum requirements of this 
subpart.
    (b)(1) All cargo tanks shall be constructed of a carbon steel or 
stainless steel acceptable to the Commandant. Impurities of copper, 
magnesium and other acetylide-forming metals shall be kept to a minimum. 
The chemical composition of all steel used shall be submitted to the 
Commandant for approval prior to fabrication. Aluminum, copper and other 
acetylide-forming metals, such as silver, mercury, magnesium, and their 
alloys shall not be used as materials of construction for tanks or 
equipment used in handling ethylene oxide.
    (2) Cargo tanks shall meet the requirements of Class I pressure 
vessels.
    (3) Cargo tanks shall be designed for the maximum pressure of vapor 
or gas used in discharging the cargo but in no case shall the design 
pressure of such tanks be less than 75 pounds per square inch gauge. The 
tank shell and heads shall not be less than \5/16\-inch thick.
    (c)(1) Cargo tanks shall be located below deck in holds or enclosed 
spaces with the domes or trunks extended above the weather deck and 
terminating in the open. Provisions shall be made to maintain the 
watertightness of the deck by means of watertight seals around such 
domes or trunks. The holds or enclosed spaces, in which the ethylene 
oxide tanks are located, shall not be used for any other purpose. 
However, in open hopper type barges of a suitable design approved for 
such service, the weatherdeck may not be required to be watertight.
    (2) All cargo tanks shall be installed with the manhole openings and 
all tank connections located above the weatherdeck in the open.
    (3) Tanks shall be electrically bonded to the hull.
    (4) No welding of any kind shall be done on cargo tanks or 
supporting structure unless authorized by the Commandant.
    (d) All cargo tanks, piping, valves, fittings, and similar equipment 
which may contain ethylene oxide in either the liquid or vapor phase, 
including the vent risers, shall be insulated. Flanges need not be 
covered, but if covered, a small opening shall be left at the bottom of 
the flange cover to detect leaks. Insulation shall be of an approved 
incombustible material suitable for use with ethylene oxide, which does 
not significantly lower the autoignition temperature and which does not 
react spontaneously with ethylene oxide. The insulation shall be of such 
thickness as to provide a thermal conductance of not more than 0.075 
B.t.u. per square foot per degree Fahrenheit differential in temperature 
per hour.
    (e)(1) When cooling systems are installed to maintain the 
temperature of the liquid below 90  deg.F, at least two complete cooling 
plants, automatically regulated by temperature variations within the 
tanks shall be provided; each to be complete with the necessary 
auxiliaries for proper operation. The control system shall also be 
capable of being manually operated. An alarm shall be provided to 
indicate malfunctioning of the temperature controls. The capacity of 
each cooling system shall be sufficient to maintain the temperature of 
the liquid cargo at or below the design temperature of the system.
    (2) An alternate arrangement may consist of three cooling plants, 
any two of which shall be sufficient to maintain the temperature of the 
liquid cargo at

[[Page 194]]

or below the design temperature of the system.
    (3) Cooling systems requiring compression of ethylene oxide are 
prohibited.
    (f) In addition to the shutoff valve required, all tank connections 
larger than one-half inch inside pipe size, except safety relief valves 
and liquid level gauging devices, shall be fitted with either internal 
back pressure check valves or internal excess flow valves in conjunction 
with a quick closing stop valve operable from at least two remote 
locations. The quick closing stop valve shall be of the ``fail safe'' 
type acceptable to the Commandant and shall be equipped with a fusible 
plug designed to melt between 208  deg.F and 220  deg.F, which will 
cause the quick closing valve to close automatically in case of fire. 
The quick closing valve shall be located as close to the tank as 
possible.
    (g) Piping systems intended for ethylene oxide service shall not be 
used for any other product and shall be completely separate from all 
other systems. The piping system shall be designed so that no cross 
connections may be made either through accident or design.
    (h) Each safety relief valve shall be set to start to discharge at 
not less than 75 pounds per square inch gauge, nor more than the design 
pressure of the tank.
    (i) The filling density shall not exceed 83 percent.
    (j)(1) The cargo shall be shipped under a suitable protective 
inerting gas system, such as nitrogen. When nitrogen gas is used, the 
gas inerting system shall be so designed that the vapor space above the 
liquid cargo will be filled and maintained with a gas mixture of not 
less than 45 percent nitrogen. Other gases proposed for inerting use may 
be given consideration by the Commandant. Original charging only of 
protective inerting gas at the loading facility is not considered 
adequate. A sufficient amount of spare inerting gas as approved by the 
Commandant shall be provided on the vessel in order to maintain the 
proper concentration of the gas in the event of normal leakage or other 
losses.
    (2) Any inerting gas selected should be at least 98 percent pure and 
free of reactive materials, such as ammonia, hydrogen sulfide, sulfur 
compounds, and acetylene.
    (k) Prior to loading, a sample from the cargo tank will be taken to 
insure that the pad gas will meet the requirements of paragraph (j) of 
this section and that the oxygen content of the vapor space will be not 
more than 2 percent maximum. If necessary, a sample will be taken after 
loading to insure the vapor space meets this requirement.
    (l) The cargo piping shall be inspected and tested at least once in 
each 2 calendar years.
    (m) In those cases where the cargo transfer hose used is not part of 
the barge's equipment, the person in charge of the transfer operation 
shall determine that the provisions of Sec. 151.50-10(k) have been met 
before using this hose. A certificate of test, supplied by the transfer 
facility, will be considered as adequate for this determination.
    (n) The provisions of Sec. 151.50-10 shall be complied with as a 
requirement for shipping ethylene oxide.
    (o) A hydrostatic test of 1\1/2\ times the design pressure shall be 
made on the cargo tanks at least once in each 4 years at the time the 
internal examination is made and at such other times as considered 
necessary by the Officer in Charge, Marine Inspection.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 85-061, 54 FR 
50966, Dec. 11, 1989]



Sec. 151.50-13  Propylene oxide.

    (a)(1) Pressure vessel cargo tanks shall meet the requirements of 
Class II pressure vessels.
    (2) Cargo tanks shall be designed for the maximum pressure expected 
to be encountered during loading, storing and discharging the cargo but 
in no case shall the design pressure of pressure vessel tanks be less 
than thirty (30) pounds per square inch gauge. The tank shell and heads 
shall not be less than \5/16\-inch thick.
    (b) When propylene oxide is carried on board a vessel, piping 
systems in propylene oxide service shall not be used for any other 
product and shall be

[[Page 195]]

completely separate from all other systems. The piping system shall be 
designed so that no cross connection may be made through inadvertence.
    (c) Each safety relief valve shall be set to start to discharge at 
not less than 30 pounds per square inch gauge, nor more than the design 
pressure of the tank.
    (d) Filling density shall not exceed 80 percent.
    (e)(1) The cargo shall be shipped under a suitable protective 
padding, such as nitrogen gas. Other gases proposed for use as padding 
may be given consideration by the Commandant. Original charging only of 
protective gas padding at the loading facility is not considered 
adequate. A sufficient amount of spare padding gas as approved by the 
Commandant shall be provided on the vessel in order to maintain the 
proper concentration of the gas in the event of normal leakage or other 
losses.
    (2) Any padding gas selected should be at least 98 percent pure and 
free of reactive materials.
    (f) Prior to loading, a sample from the cargo tank will be taken to 
insure that the pad gas will meet the requirements of paragraph (e) of 
this section and that the oxygen content of the vapor space will be not 
more than 2 percent maximum. If necessary, a sample will be taken after 
loading to insure the vapor space meets this requirement.
    (g) The cargo piping shall be subjected to a hydrostatic test of 
1\1/2\ times the maximum pressure to which they may be subjected in 
service.
    (h) The Commandant may permit the transportation of propylene oxide 
in other than pressure vessel type tanks if it is shown to his 
satisfaction that a degree of safety is obtained consistent with the 
minimum requirements of this subpart.
    (i) The provisions of Sec. 151.50-10 shall be complied with as a 
requirement for shipping propylene oxide.



Sec. 151.50-20  Inorganic acids.

    (a)(1) Gravity type cargo tanks shall be designed and tested to meet 
the rules of the American Bureau of Shipping for a head of water at 
least 8 feet above the tank top or the highest level the lading may 
rise, whichever is the greater. The plate thickness of any part of the 
tank shall not be less than three-eighths inch.
    (2) Gravity tank vents. (i) The outlet end of the gravity tank vent 
shall terminate above the weatherdeck, clear of all obstructions and 
away from any source of ignition.
    (ii) The gravity tank vent shall terminate in a gooseneck bend and 
shall be fitted with a single flame screen or two fitted flame screens 
as described in Sec. 151.03-25. No shutoff valve or frangible disk shall 
be fitted in the vent lines.
    (b)(1) Pressure vessel type cargo tanks shall be independent of the 
vessel's structure and shall be designed for the maximum pressure to 
which they may be subjected when compressed air is used to discharge the 
cargo, but in no case shall the design pressure be less than that 
indicated as follows:

Fluorosilicic Acid--50 pounds per square inch gauge.
Hydrochloric Acid--50 pounds per square inch gauge.
Hydrofluorosilicic Acid, see Fluorosilicic Acid.
Phosphoric Acid--30 pounds per square inch gauge.
Sulfuric Acid--50 pounds per square inch gauge.

    (2) Pressure vessel type cargo tanks shall be of welded construction 
meeting the requirements for Class II or Class III given in Part 54 of 
this chapter.
    (3) When compressed air is used to discharge the cargo, the tank 
shall be fitted with a vent led to the atmosphere in which a rupture 
disk shall be installed. The rupture disk shall be designed to burst at 
a pressure not exceeding the design pressure of the tank. An auxiliary 
vent to relieve the pressure or vacuum in the tank during the cargo 
transfer operation may be led from the vent line between the tank and 
the rupture disk. A shutoff valve may be fitted in the auxiliary vent.
    (c) Openings in tanks are prohibited below deck, except for access 
openings used for inspection and maintenance of tanks, or unless 
otherwise specifically approved by the Commandant. Openings shall be 
fitted with bolted cover plates and acid-resistant gaskets.

[[Page 196]]

    (d) Where special arrangements are approved by the Commandant to 
permit a pump suction to be led from the bottom of the tank, the filling 
and discharge lines shall be fitted with shutoff valves located above 
the weatherdeck or operable therefrom.
    (e) The outage shall not be less than 1 percent.
    (f) All enclosed compartments containing cargo tanks and all 
machinery spaces containing cargo pumps shall be fitted with effective 
means of ventilation.
    (g) A separator shall be fitted in compressed air lines to the tank 
when air pressure is used to discharge the cargo.
    (h) Only installed electric or portable battery lights shall be used 
during the cargo transfer operations. Smoking is prohibited and the 
person in charge of cargo transfer shall post No Smoking signs during 
cargo transfer operations.
    (i) Tanks approved for the transportation of acid cargoes subject to 
this section shall not be used for the transportation of any other 
commodity, except upon authorization by the Commandant (CG-ENG).
    (j) Each cargo tank shall be subjected to an internal examination at 
least once in every 4 years. If cargo tank lining is required and the 
lining of the cargo tank has deteriorated in service or is not in place, 
the Marine Inspector may require the tank to be tested by such 
nondestructive means as he may consider necessary to determine its 
condition.
    (k) The special requirements for fluorosilicic acid in Sec. 151.50-
77, for hydrochloric acid in Sec. 151.50-22, for hydrofluorosilicic 
acid, see fluorosilicic acid, for phosphoric acid in Sec. 151.50-23, and 
for sulfuric acid in Sec. 151.50-21 also apply to the carriage of those 
acids.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 80-001, 46 FR 
63279, Dec. 31, 1981; CGD 82-063b, 48 FR 4781, Feb. 3, 1983; CGD 88-100, 
54 FR 40040, Sept. 29, 1989; CGD 92-100, 59 FR 17028, Apr. 11, 1994]



Sec. 151.50-21  Sulfuric acid.

    (a) How sulfuric acid may be carried. (1) Sulfuric acid of 
concentration of 77.5 percent (1.7019 specific gravity) (59.8 deg. 
Baume) or greater concentrations with or without an inhibitor, provided 
the corrosive effect on steel measured at 100  deg.F is not greater than 
that of 66 deg. Baume commercial sulfuric acid, may be transported in 
unlined gravity type cargo tanks or unlined pressure vessel type cargo 
tanks.
    (2) Sulfuric acid of concentration of 65.25 percent (1.559 specific 
gravity) (52 deg. Baume) or greater concentrations, provided the 
corrosive effect on steel measured at 100  deg.F is not greater than 
that of 52 deg. Baume commercial sulfuric acid, may be transported in 
unlined pressure vessel type cargo tanks independent of the vessel's 
structure.
    (3) Sulfuric acid of concentration not to exceed 65.25 percent 
(1.559 specific gravity) (52 deg. Baume) may be transported in gravity 
type cargo tanks or pressure-vessel type cargo tanks which are lined 
with lead or other equally suitable acid-resistant material acceptable 
to the Commandant.
    (4) Sulfuric acid of concentration not to exceed 51 percent (1.408 
specific gravity) (42 deg. Baume) and spent sulfuric acid resulting from 
the use of sulfuric acid in industrial processes may be transported in 
gravity type cargo tanks which are lined with rubber or other equally 
suitable acid-resistant material acceptable to the Commandant. See 
Sec. 151.15-3(f)(2).
    (5) Spent or sludge sulfuric acid resulting from the use of sulfuric 
acid in industrial processes may be transported in unlined gravity type 
cargo tanks or unlined pressure vessel type cargo tanks, provided the 
corrosive effect on steel is not greater than that of commercial 
sulfuric acid as prescribed in paragraph (a)(1) of this section.
    (b) Heating coils will be the only acceptable means of liquefying 
frozen or congealed sulfuric acid.
    (c) During cargo transfer, a water hose shall be connected to a 
water supply ready for immediate use and any leakage or spillage of acid 
shall be immediately washed down. This requirement can be met by 
facilities provided from shore.
    (d) The requirements of Sec. 151.50-20 are also applicable to the 
shipment of sulfuric acid.



Sec. 151.50-22  Hydrochloric acid.

    (a) Hydrochloric acid shall be carried in gravity or pressure type 
cargo tanks which are independent of the vessel's

[[Page 197]]

structure provided such tanks are lined with rubber or other equally 
suitable material acceptable to the Commandant. See Sec. 151.15-3(f)(2).
    (b) Notwithstanding the provisions of Sec. 151.50-20(b)(3), 
compressed air may be used to discharge hydrochloric acid from gravity 
type cargo tanks only if the tanks are of cylindrical shape with dished 
heads, provided the air pressure does not exceed the design pressure of 
the tank but in no case shall it exceed 10 pounds per square inch gauge. 
Such tanks shall be fitted with pressure relief devices and need not be 
vented to the atmosphere as required by Sec. 151.50-20(b)(3).
    (c) During cargo transfer, a water hose shall be connected to a 
water supply and be ready for immediate use. Any leakage or spillage of 
acid shall be immediately washed down. This requirement can be met by 
facilities provided from shore.
    (d) Spent hydrochloric acid or hydrochloric acid adulterated by 
other chemicals, inhibitors, oils, solvents, water, etc., shall not be 
transported in bulk except upon authorization by the Commandant (CG-
ENG).
    (e) The requirements of Sec. 151.50-20 are also applicable to the 
shipment of hydrochloric acid.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-100, 54 FR 
40040, Sept. 29, 1989]



Sec. 151.50-23  Phosphoric acid.

    (a) The term phosphoric acid as used in this subpart shall include, 
in addition to phosphoric acid, aqueous solutions of phosphoric acid, 
and super phosphoric acid.
    (b) Phosphoric acid may be carried in either gravity or pressure 
type cargo tanks. The tanks shall be rubber-lined, or lined or clad with 
other suitable material acceptable to the Commandant, or shall be 
fabricated of a phosphoric acid resistant stainless steel. See 
Sec. 151.15-3(f)(2).
    (c) The vessel's shell plating shall not be used as any part of the 
boundaries of gravity type cargo tanks.
    (d) Cargo piping, including valves, fittings, and flanges where 
exposed to the acid, shall be rubber-lined, or lined, coated or clad 
with other corrosion-resistant material, or shall be fabricated of a 
phosphoric acid resistant stainless steel. Vent piping, including 
flanges and fittings, shall be similarly protected at least to the 
height of the frangible disk if such is installed.
    (e) Phosphoric acid adulterated by other chemicals, inhibitors, 
oils, solvents, etc., shall not be transported in bulk cargo tanks 
except upon authorization by the Commandant (CG-ENG).
    (f) The requirements of Sec. 151.50-20 are also applicable to the 
shipment of phosphoric acid.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 82-063b, 48 FR 
4781, Feb. 3, 1983; USCG-2014-0688, 79 FR 58284, Sept. 29, 2014]



Sec. 151.50-30  Compressed gases.

    (a) All tank inlet and outlet connections, except safety relief 
valves, liquid level gauging devices, and pressure gauges shall be 
marked to designate whether they terminate in the vapor or liquid space. 
Labels, when used, shall be of corrosion-resistant materials and may be 
attached to valves.
    (b) Venting. (1) Except as provided in paragraph (b)(2) of this 
section each safety relief valve installed on a cargo tank shall be 
connected to a branch vent of a venting system which shall be 
constructed so that the discharge of gas will be directed vertically 
upward to a point at least 10 feet above the weatherdeck or the top of 
any tank or house located above the weatherdeck.
    (2) Safety valves on cargo tanks in barges may be connected to 
individual or common risers which shall extend to a reasonable height 
above the deck. Where the escape of vapors from the venting system may 
interfere with towing operations, the installation shall be acceptable 
to the Commandant, and the arrangement shall be such as to minimize the 
hazard of escaping vapors. Arrangements specially provided for venting 
cargo tanks forming part of the hull on unmanned barges will be given 
special consideration by the Commandant.
    (3) The capacity of branch vents or vent headers shall depend upon 
the number of cargo tanks connected to such branch or header as provided 
in Table 151.50-30(b)(3).

[[Page 198]]



     Table 151.50-30(b)(3)--Capacity of Branch Vents or Vent Headers
 
                                                                Percent
                                                                of total
                    Number of cargo tanks                        valve
                                                               discharge
 
1 or 2.......................................................        100
3............................................................         90
4............................................................         80
5............................................................         70
6 or more....................................................         60
 

    (4) Return bends and restrictive pipe fittings are prohibited. Vents 
and headers shall be so installed as to minimize stresses on safety 
relief valves and their mounting nozzles.
    (5) When vent discharge risers are installed, they shall be so 
located as to protect against physical damage and be fitted with loose 
raincaps.
    (6) When vent discharge risers are installed and their installation 
in accordance with the provisions of this paragraph results in 
restrictions in the operation of the barge due to navigation clearances, 
the vents may be designed so as to be collapsible when passing under 
such low clearance obstacles.
    (c) Repairs involving welding or burning. (1) Repairs involving 
welding or burning shall not be undertaken on the cargo tanks or piping 
while cargo in either the liquid or vapor state is present therein.
    (2) Repairs involving welding or burning on parts of the barge other 
than cargo tanks or piping may be undertaken provided positive pressure 
is maintained in the tanks or the tanks have been vented or washed 
internally.
    (d) Respiratory equipment. (1) At least one approved self-contained 
breathing apparatus shall be available in a readily accessible location 
off the barge at all times during the cargo transfer operations. This 
equipment shall not be considered to be part of the barge equipment, and 
the barge shall not be required to carry this equipment en route.
    (2) The approved self-contained breathing apparatus, masks, and all 
respiratory protective devices shall be of types suitable for starting 
and operating at the temperatures encountered, and shall be maintained 
in good operating condition.
    (3) Personnel involved in the cargo transfer operations shall be 
adequately trained in the use of the respiratory equipment.
    (e) Filling densities and container design pressure. For compressed 
gases transported at or near ambient temperatures, the maximum filling 
densities and minimum design pressure of container as indicated in Table 
151.50-30(e) shall apply. Deviations from the tabulated values shall be 
submitted to the Commandant for approval. Where cargo is to be carried 
at temperatures below ambient, the tank shall be designed in accordance 
with Sec. 151.15-3(b)(3) and the maximum amount of cargo shall be in 
accordance with Sec. 151.45-6(b).

                      Table 151.50-30(e)--Filling Densities and Container Design Pressures
----------------------------------------------------------------------------------------------------------------
                                                           Maximum permitted filling  Minimum design pressure of
                                                              density (percent by       tank (pounds per square
                                                           weight, see Sec.  151.03-          inch gauge)
                       Kind of gas                                    21)            ---------------------------
                                                         ----------------------------
                                                           Uninsulated    Insulated    Uninsulated    Insulated
                                                              tanks         tanks         tanks         tanks
----------------------------------------------------------------------------------------------------------------
Ammonia, anhydrous......................................            57            58           250           215
Chlorine................................................           125           125           300           300
Dichlorodifluoromethane.................................           123           125           147           127
Dimethylamine...........................................            61            62            46            36
Methyl chloride.........................................            85            87           131           112
Monochlorodi-fluoromethane..............................           110           113           243           211
Vinyl chloride..........................................            86            87            81            67
----------------------------------------------------------------------------------------------------------------

    (f) The shell and head thickness of liquefied compressed cargo tanks 
shall not be less than five-sixteenths inch.
    (g) The special requirements for ammonia (anhydrous) in Sec. 151.50-
32, for argon in Sec. 151.50-36, for chlorine in Sec. 151.50-31, for 
nitrogen in Sec. 151.50-36,

[[Page 199]]

and for vinyl chloride in Sec. 151.50-34 also apply to the carriage of 
those gases.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-100, 54 FR 
40040, Sept. 29, 1989]



Sec. 151.50-31  Chlorine.

    (a) Chlorine barges. Subparts 98.03 and 98.20 of Part 98 of this 
chapter have been revoked. However, chlorine barges that were certified 
in accordance with the requirements of subpart 98.20 of part 98 of this 
chapter and having hulls modified, if necessary, to comply with 
Secs. 98.03-5(c) and 98.03-25(c) of this chapter, shall be considered as 
complying with this part.
    (b) Design and construction of cargo tanks. (1) The cargo tanks 
shall meet the requirements of Class I pressure vessels.
    (2) Tanks shall be designed for a pressure of not less than 300 
pounds per square inch gauge. For the maximum allowable working pressure 
of tanks in service, see paragraph (q) of this section.
    (3) Each tank shall be provided with one or more 24-inch inside 
diameter manhole, fitted with a cover located above the maximum liquid 
level and as close as possible to the top of the tank. There shall be no 
other openings in the tank.
    (c) Tanks may be installed ``on deck'' or ``under deck'' with the 
tank protruding above deck. If a portion of the tank extends above the 
weatherdeck, provision shall be made to maintain the weathertightness on 
the deck. All tanks shall be installed with the manhole opening located 
above the weatherdeck. Hopper type barges operating on protected inland 
waters may have tanks located in the hopper space.
    (d) All valves, flanges, fittings and accessory equipment shall be 
of a type suitable for use with chlorine and shall be made of metal, 
corrosion-resistant to chlorine in either the gas or liquid phase. Cast 
or malleable iron shall not be used. Valves, flanges, and flanged joints 
shall be 300 pounds A.N.S.I. standard minimum with tongue and groove or 
raised face. Joints shall be fitted with sheet lead or other suitable 
gasket material. Welded fittings shall be used wherever possible and the 
number of pipe joints held to a minimum. Threaded joints in cargo lines 
and vapor lines shall not be used in sizes above 1 inch internal 
diameter. Welded ``hammerlock'' unions or other unions approved by the 
Commandant may be used at terminal points of fixed barge piping.
    (e) Each tank shall be provided with liquid and vapor connections 
fitted with manually operated shutoff valves and with safety relief 
valves. All valves shall be bolted to the cover or covers specified in 
paragraph (b)(3) of this section and shall be protected against 
mechanical damage by a suitable protective metal housing. A drain 
connection shall be provided from the protective housing.
    (f) All liquid and vapor connections, except safety relief valves, 
shall be fitted with automatic excess flow valves, which shall be 
located on the inside of the tank. Bypass openings are not permitted in 
excess flow valves.
    (g) Chlorine barge cargo piping shall not be fitted with the 
nonreturn valves specified by Sec. 151.20-20(b).
    (h) Liquid level gauging devices of any type are prohibited on 
chlorine tanks.
    (i) A pressure gauge shall be attached to the vapor shutoff valve or 
vapor line so as to indicate the pressure in the tank at all times 
during loading and unloading.
    (j) Piping including connections between tank valves and fixed barge 
piping, shall be of a thickness of not less than Schedule 80.
    (k) In multiple tank installations the tanks shall not be 
interconnected by piping or manifolds which may contain liquid chlorine. 
Manifolding of vapor lines of individual tanks into a common header for 
connection to shore is permitted. More than one cargo tank may be filled 
or discharged at a time, provided each tank is filled from or discharged 
to shore tanks through separate lines.
    (l) Connections between fixed barge piping and shore piping shall be 
fabricated from one of the following:
    (1) Schedule 80 seamless pipe, having flexible metallic joints.
    (2) Corrosion-resistant metallic pipe (equivalent to Schedule 80) 
not subject to deterioration by chlorine, having flexible metallic 
joints.

[[Page 200]]

    (3) Flexible metallic hose acceptable to the Commandant. If 
paragraphs (k)(1) or (2) of this section are used, the flexible metallic 
joints shall meet the requirements for cargo hose. See Sec. 151.04-5(h).
    (m) Safety relief valves shall discharge into the protective housing 
surrounding the valves. Suitable provisions shall be made to vent the 
housing. The arrangement shall be such as to minimize the hazard of 
escaping vapors.
    (n) Cargo transfer operations. (1) The amount of chlorine loaded 
into each cargo tank shall be determined by weight. Draft marks shall 
not be used as a means of weighing. Any chlorine vapors vented during 
the filling operation shall be disregarded when calculating the maximum 
amount of chlorine to be loaded into the cargo tanks.
    (2) Prior to the start of filling operations, care shall be 
exercised to insure that the cargo tanks are empty, dry, and free from 
foreign matter.
    (3) After the filling operation is completed, the vapor in each 
cargo tank shall be analyzed to determine the percentage of gaseous 
chlorine in the vapor space. If it should contain less than 80 percent 
chlorine by volume, vapors shall be withdrawn through the vent or vapor 
line until the vapor in the cargo tanks contains at least 80 percent 
chlorine by volume.
    (4) After filling connections are removed, upon completion of the 
loading of a cargo tank, all connections at the tank shall be tested for 
leakage of chlorine by the aqua ammonia method.
    (5) The chlorine in the cargo tanks shall be discharged by the 
pressure differential method. If the vapor pressure of the chlorine is 
not sufficient to force the liquid out of the tank, compressed air, or 
other nonreactive gas, may be used to secure the desired rate of 
discharge, provided the air or gas is oil-free and thoroughly dried by 
passing it over activated aluminum oxide, silica gel, or other 
acceptable drying agent, and provided the supply pressure is limited to 
75 percent of maximum allowable pressure of chlorine tanks.
    (6) After completion of cargo transfer, any liquid chlorine in the 
cargo piping shall be removed and cargo transfer piping shall be 
disconnected at the cargo tanks. After disconnecting the cargo piping, 
both ends of the line shall be closed and all inlet and outlet valves on 
the tank shall be plugged or fitted with blind flanges.
    (o) During cargo transfer, every person on the barge shall carry on 
his person a respiratory protective device which will protect the wearer 
against chlorine vapors and will provide respiratory protection for 
emergency escape from a contaminated area resulting from cargo leakage. 
This respiratory protective equipment shall be of such size and weight 
that the person wearing it will not be restricted in movement or in the 
wearing of a lifesaving device.
    (p) During each internal inspection, each cargo tank must be tested 
hydrostatically to 1\1/2\ times the maximum allowable pressure as 
determined by the safety relief valve setting.
    (q) During each internal inspection, each cargo tank excess flow 
valve and safety relief valve must be inspected and tested in accordance 
with paragraphs (g) and (i) of Sec. 151.04-5 of this chapter.
    (r) When periodic inspection indicates that a cargo tank has 
deteriorated in service, the maximum allowable pressure shall be 
recalculated, using the minimum thickness found by actual measurement. 
The recalculated maximum allowable pressure shall be not less than 275 
pounds per square inch gauge. If the recalculated maximum allowable 
pressure is less than 275 pounds per square inch gauge, the cargo tanks 
shall be withdrawn from service.
    (s) The following substances shall not be carried as stores on board 
barges transporting chlorine in bulk: hydrogen, methane, liquefied 
petroleum gases, coal gas, acetylene, ammonia, turpentine, compounds 
containing metallic powders, finely divided metals or finely divided 
organic materials.
    (t) The requirements of Sec. 151.50-30 for compressed gases are also 
applicable to the shipment of chlorine.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 85-061, 54 FR 
50966, Dec. 11, 1989; CGD 85-061, 55 FR 41918, Oct. 16, 1990; USCG-2014-
0688, 79 FR 58284, Sept. 29, 2014]

[[Page 201]]



Sec. 151.50-32  Ammonia, anhydrous.

    (a) The anhydrous ammonia tanks may be installed in the bulk liquid 
cargo tanks provided the liquid surrounding the enclosed anhydrous 
ammonia tanks complies with the following chemical and physical 
properties:
    (1) Boiling point above 125  deg.F atmospheric pressure.
    (2) Inert to ammonia at 100  deg.F at atmospheric pressure.
    (3) Noncorrosive in the liquid and vapor phase to the ammonia tanks 
and piping.
    (b) Copper, copper alloys, and copper bearing alloys shall not be 
used as materials of construction for tanks, pipelines, valves, 
fittings, and other items of equipment that may come in contact with 
anhydrous ammonia liquid or vapor.
    (c) Valves, flanges and pipe fittings shall be of the tongue and 
groove or raised-face type, fitted with suitable gasket material. Welded 
fittings shall be used wherever possible and the number of pipe joints 
shall be held to a minimum. Threaded joints are not permitted for pipe 
diameters exceeding 2 inches. Brazed joints are prohibited.
    (d) All enclosed spaces containing cargo tanks fitted with bottom 
outlet connections shall be provided with mechanical ventilation of 
sufficient capacity to assure a change of air every 3 minutes.
    (e) Each cargo tank shall be electrically grounded to the hull.
    (f) When transferring cargo, a hose shall be connected to a water 
supply so that if leakage of anhydrous ammonia occurs the vapor may be 
dispersed by the use of water fog. This requirement can be met by 
facilities provided from shore.
    (g) During cargo transfer operations, every person on the vessel 
shall carry on his person or have close at hand at all times a canister 
mask approved for ammonia or each person shall carry on his person a 
respiratory protective device which will protect the wearer against 
ammonia vapors and will provide respiratory protection for emergency 
escape from a contaminated area resulting from cargo leakage. This 
respiratory protective equipment shall be of such size and weight that 
the person wearing it will not be restricted in movement or in the 
wearing of a lifesaving device.
    (h) [Reserved]
    (i) The requirements of Sec. 151.50-30 for compressed gases are also 
applicable to the shipment of anhydrous ammonia.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 85-061, 54 FR 
50966, Dec. 11, 1989]



Sec. 151.50-34  Vinyl chloride (vinyl chloride monomer).

    (a) Copper, aluminum, magnesium, mercury, silver, and their alloys 
shall not be used as materials of construction for tanks, pipelines, 
valves, fittings, and other items of equipment that may come in contact 
with vinyl chloride liquid or vapor.
    (b) Valves, flanges, and pipe fittings shall be of the tongue and 
groove or raised-face type, fitted with suitable gasket material. Welded 
fittings shall be used wherever possible and the number of pipe joints 
shall be held to a minimum. Threaded joints are not permitted for pipe 
diameters exceeding 2 inches. Brazed joints are prohibited.
    (c) Each cargo tank shall be electrically grounded to the hull.
    (d) The vessel shall be electrically bonded to the shore piping 
prior to connecting the cargo hose. This electrical bonding shall be 
maintained until after the cargo hose has been disconnected and any 
spillage has been removed.
    (e) To the extent he deems it necessary, the Officer in Charge, 
Marine Inspection, may require that sufficient insulation shall be 
removed from insulated tanks at least once in each 8 calendar years to 
permit spot external examination of the tanks and insulation in 
accordance with Sec. 151.04-5(c).
    (f) The requirements of Sec. 151.50-30 for compressed gases are also 
applicable to the shipment of vinyl chloride.
    (g) The person in charge of cargo transfer shall ensure that:
    (1) Cargo vapors are returned to the cargo tank or shore disposition 
for reclamation or destruction during cargo transfer operations;
    (2) Continuous monitoring for vinyl chloride vapor leaks is 
conducted aboard a tank barge undergoing vinyl chloride transfer 
operations. Fixed or

[[Page 202]]

portable instrumentation may be utilized to ensure that personnel are 
not exposed to vinyl chloride vapor concentrations in excess of 1 ppm 
averaged over any eight hour period of 5 ppm averaged over any period 
not exceeding 15 minutes. The method of monitoring and measurement shall 
have an accuracy (with a confidence level of 95 percent) of not less 
than plus or minus 50 percent from 0.25 through 0.5 ppm, plus or minus 
35 percent from over 0.5 ppm through 1.0 ppm, and plus or minus 25 
percent over 1.0 ppm;
    (3) Cargo transfer operation is discontinued or corrective action is 
initiated by the person in charge to minimize exposure to personnel 
whenever a vinyl chloride vapor concentration in excess of 1 ppm is 
detected. If the vinyl chloride vapor concentration exceeds 5 ppm for 
over 15 minutes, action to reduce the leak can be continued only if the 
respiratory protection requirements of 29 CFR 1910.1017 are met by all 
personnel in the area of the leak;
    (4) Those portions of cargo lines which will be open to the 
atmosphere after piping is disconnected are free of vinyl chloride 
liquid and that the vinyl chloride vapor concentration in the area of 
the cargo piping disconnect points is not greater than 5 ppm;
    (5) Any restricted gauge fitted on a tank containing vinyl chloride 
is effectively out of service by locking or sealing the device so that 
it cannot be used; and
    (6) A restricted gauge is not to be used as a ``check'' on the 
required closed gauge, nor as a means or sampling.
    (h) The words ``CANCER--SUSPECT AGENT'' must be added to the warning 
signs required by 46 CFR 151.45-2(e).
    (i) Signs bearing the legend:

                   cancer--suspect agent in this area

                      protective equipment required

                        authorized personnel only

must be posted whenever hazardous operations, such as tank cleaning, are 
in progress.
    (j) A tank barge undergoing cargo transfer operations must be 
designated a ``regulated area'' having access limited to authorized 
persons and requiring a daily roster of authorized persons who may board 
the barge.
    (k) Employees engaged in hazardous operations, such as tank 
cleaning, must be provided, and be required to wear and use respiratory 
protection in accordance with the provisions of 29 CFR 1910.1017 and 
protective garments, provided clean and dry for each use, to prevent 
skin contact with liquid vinyl chloride.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 74-167R, 40 FR 
17026, Apr. 16, 1975; CGD 88-100, 54 FR 40040, Sept. 29, 1989]



Sec. 151.50-36  Argon or nitrogen.

    (a) A cargo tank that contains argon or nitrogen and that has a 
maximum allowable working pressure of 172 kPa (25 psig) or greater must 
have one of the following arrangements:
    (1) A refrigeration system that keeps the tank pressure below the 
safety relief valve operating pressure when ambient temperatures are 46 
deg.C (115  deg.F) air and 32  deg.C (90  deg.F) water.
    (2) A relief valve or pressure control valve that maintains the tank 
pressure below the setting of the tank's required safety relief valve in 
ambient temperatures of 46  deg.C (115  deg.F) air and 32  deg.C (90 
deg.F) water.
    (b) A cargo tank with a maximum allowable working pressure of less 
than 172 kPa (25 psig) is approved by the Commandant (CG-ENG) on a case 
by case basis.
    (c) Section 151.50-30 also applies to the carriage of argon or 
nitrogen.

[CGD 88-100, 54 FR 40040, Sept. 29, 1989]



Sec. 151.50-40  Additional requirements for carbon disulfide
(carbon bisulfide) and ethyl ether.

    (a) The provisions of this section are applicable if specifically 
referenced in the Special Requirements column of Table 151.05.
    (b) Cargo tanks shall be electrically bonded to the hull of the 
vessel. A vessel shall be electrically bonded to the shore piping prior 
to connecting the cargo hose. This electrical bonding shall be 
maintained until after the cargo hose has been disconnected and any 
spillage has been removed.
    (c) Pumps may be used for discharging cargo: Provided, That they are

[[Page 203]]

the vertical submerged type designed to avoid liquid pressure against 
the shaft gland and are suitable for use with the cargo.
    (d) Provisions shall be made to maintain an inert gas padding in the 
cargo tank during loading, unloading and during transit.
    (e) Provisions shall be made to prevent any leakage being washed 
into the waterways at the loading and unloading points.
    (f) The special requirements of Sec. 151.50-41 for carbon disulfide 
(carbon bisulfide) and Sec. 151.50-42 for ethyl ether shall also be 
observed.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-100, 54 FR 
40029, Sept. 29, 1989]



Sec. 151.50-41  Carbon disulfide (carbon bisulfide).

    (a) All openings shall be in the top of the tank.
    (b) Loading lines shall terminate near the bottom of the tank.
    (c) A standard ullage opening shall be provided for secondary and 
emergency sounding.
    (d) If a cargo discharge pump is used, it shall be inserted through 
a cylindrical well extending from the tank top to a point near the tank 
bottom. A blanket of water shall be formed in this well before 
attempting pump removal.
    (e) Water or inert gas displacement may be used for discharging 
cargo provided the cargo system is designed for the expected pressure 
and temperature. This method for discharging may be used with pressure 
type tanks only.
    (f) Adequate natural ventilation shall be provided for the voids 
around the cargo tanks while the vessel is under way. During loading and 
unloading, forced ventilation shall be used. The forced ventilation 
shall be of sufficient capacity to provide a complete change of air 
within each void space every 5 minutes. The ventilating fan shall be of 
nonsparking construction.
    (g) Because of its low ignition temperature and the close clearances 
required to arrest its flame propagation, carbon disulfide (carbon 
bisulfide) requires safeguards beyond those required for any electrical 
hazard groups.
    (h) The requirements of Sec. 151.50-40 are also applicable to the 
shipment of carbon disulfide (carbon bisulfide).

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-100, 54 FR 
40040, Sept. 29, 1989]



Sec. 151.50-42  Ethyl ether.

    (a)(1) Gravity tanks shall be designed and tested to meet the rules 
of the American Bureau of Shipping for a head of water at least 8 feet 
above the tank top or the highest level the lading may rise, whichever 
is greater. All openings shall be in the top of the tank.
    (2) Pressure vessel type tanks shall be designed for the maximum 
pressure to which they may be subjected when pressure is used to 
discharge the cargo, but in no case shall the design pressure be less 
than 50 pounds per square inch gauge. All openings shall be in the top 
of the tank.
    (b) Adequate natural ventilation shall be provided for the voids 
around the cargo tanks while the vessel is underway. If a power 
ventilation system is installed, all blowers shall be of nonsparking 
construction. Power driven ventilation equipment shall not be located in 
the void spaces surrounding the cargo tanks.
    (c) Pressure relief valve settings shall not be less than 3 pounds 
per square inch gauge for gravity tanks. For pressure vessels, the 
relief valve setting shall not exceed the design pressure of the tank.
    (d) Inert gas displacement may be used for discharging cargo from 
pressure vessel tanks provided the cargo system is designed for the 
expected pressure and the discharge pressure does not exceed 50 pounds 
per square inch gauge or the design pressure of the tank, whichever is 
less.
    (e) No electrical equipment except for approved lighting fixtures 
shall be installed in enclosed spaces adjacent to the cargo tanks. 
Lighting fixtures must be approved for use in Class I, Group C, 
hazardous locations. The installation of electrical equipment on the 
weather deck shall comply with the requirements of part 111, subpart 
111.105 of this chapter.

[[Page 204]]

    (f) Copper, silver, mercury and magnesium or other acetylide forming 
metals and their alloys shall not be used as materials of construction 
for tanks, pipelines, valves, fittings and other items of equipment that 
may come in contact with the cargo vapor or liquid.
    (g) Precautions shall be taken to prevent the contamination of ethyl 
ether by strong oxidizing agents.
    (h) The requirements of Sec. 151.50-40 are also applicable to the 
shipment of ethyl ether.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 88-100, 54 FR 
40040, Sept. 29, 1989]



Sec. 151.50-50  Elemental phosphorus in water.

    (a) Tanks shall be designed and tested for a head equivalent to the 
design lading of phosphorus and its water blanket extended to 8 feet 
above the tank top. In addition, tank design calculations shall 
demonstrate that the tank can withstand, without rupture, a single 
loading to the highest level to which the water blanket may rise, if 
that exceeds 8 feet. Tanks shall not be less than \5/16\-inch thick.
    (b) When a water displacement method of discharge is used, pressure 
vessel type cargo tanks, designed and tested in accordance with 
Subchapter F of this chapter shall be employed. Such tanks shall be 
designed for the maximum pressure to which they may be subjected when 
water pressure is used to discharge the cargo.
    (c) Each cargo tank shall be fitted with an approved pressure vacuum 
relief valve set to discharge at a pressure not exceeding 2 pounds per 
square inch. When transferring cargo, the vent discharge shall lead 
overboard above the waterline. When pressure vessel type tanks are used, 
each tank shall be fitted with a relief valve of suitable size.
    (d) Sufficient outage shall be provided to prevent the tank from 
being liquid full at any time, but in no case shall the outage be less 
than 1 percent. When pressure vessel type tanks are used, outage need 
not be provided.
    (e) The use of compressed air to discharge cargo is prohibited.
    (f) Cargo shall be loaded at a temperature not exceeding 140  deg.F, 
and then cooled until the water above the cargo has a temperature not 
exceeding 105  deg.F prior to the movement of the vessel. Upon 
presentation of satisfactory proof that procedures followed will provide 
adequate safety in transportation and handling, the Commandant may 
authorize movement of the vessel following cooling of the water above 
the cargo to a temperature exceeding 105  deg.F.
    (g) Coils in which steam or hot water is circulated to heat the 
cargo so that it may be pumped shall be located outside the cargo tanks.
    (h) A fixed ballast piping system (including a power driven pump of 
ample capacity), or other means acceptable to the Commandant shall be 
installed so that any void space surrounding the tanks may be flooded.
    (i) All openings shall be in the top of the tank and shall be fitted 
with bolted cover plates and gaskets resistant to the attack of 
phosphorus pentoxide.
    (j) All enclosed compartments containing cargo tanks shall be 
provided with effective means of ventilation.
    (k) Cargo lines shall be traced with steam piping and secured 
thereto by lagging to prevent solidification of cargo during transfer 
operations.
    (l) During cargo transfer, a water hose shall be connected to a 
water supply ready for immediate use, and any spillage of phosphorus 
shall be immediately washed down. This requirement can be met by 
facilities provided from shore.
    (m) At least two fresh air masks or self-contained breathing 
apparatus shall be stowed on board the vessel at all times for use of 
personnel entering the tanks or adjacent spaces.
    (n) Authorization from the Commandant (CG-ENG) shall be obtained to 
transport lading other than phosphorus in the cargo tanks or to have on 
board any other cargo when phosphorus is laden in the tanks.
    (o) Mechanical ventilation of sufficient capacity to insure a change 
of air within the cargo tanks every 3 minutes shall be provided during 
the inspection and maintenance of the cargo tanks.
    (p) Cargo tanks shall be electrically bonded to the hull of the 
barge. A vessel shall be electrically bonded to the shore piping prior 
to connecting the

[[Page 205]]

cargo hose. This electrical bonding shall be maintained until after the 
cargo hose has been disconnected.

[CGFR 70-10, 35 FR 3714, Feb. 24, 1970, as amended by CGD 82-063b, 48 FR 
4781, Feb. 3, 1983]



Sec. 151.50-55  Sulfur (molten).

    (a) Ventilation (cargo tank):
    (1) Cargo tank ventilation shall be provided to maintain the 
concentration of H2S below one-half of its lower explosive 
limit throughout the cargo tank vapor space for all conditions of 
carriage; i.e., below 1.85 percent by volume.
    (2) Where mechanical ventilation systems are used for maintaining 
low gas concentrations in cargo tanks, an alarm system shall be provided 
to give warning if the system fails.
    (3) Connections shall be provided to enable sampling of the 
atmosphere over the cargo in each cargo tank for analysis.
    (4) The ventilation system shall be designed and arranged to 
preclude the depositing of sulfur within the system.
    (b) Void spaces:
    (1) Openings to void spaces adjacent to cargo tanks shall be 
designed and fitted to prevent the entry of water, sulfur or cargo 
vapors.
    (2) Connections shall be provided to enable sampling and analyzing 
vapors in void spaces.
    (c) Temperature controls shall be provided in accordance with 
Sec. 151.20-10 and applicable sections of Subpart 151.40 of this part. 
Heat transfer media shall be steam, and alternate media will require 
specific approval of the Commandant.

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970]



Sec. 151.50-60  Benzene.

    The person in charge of a Coast Guard inspected barge must ensure 
that the provisions of part 197, subpart C, of this chapter are applied.

[CGD 88-040, 56 FR 65006, Dec. 13, 1991]



Sec. 151.50-70  Cargoes requiring inhibition or stabilization.

    When table 151.05 refers to this section, that cargo must be--
    (a) Inhibited; or
    (b) Stabilized.

[CGD 88-100, 54 FR 40040, Sept. 29, 1989]



Sec. 151.50-73  Chemical protective clothing.

    When table 151.05 refers to this section, the following apply:
    (a) The person in charge of cargo handling operations shall ensure 
that the following chemical protective clothing constructed of materials 
resistant to permeation by the cargo being handled is worn by all 
personnel engaged in an operation listed in paragraph (b) of this 
section:
    (1) Splash protective eyewear.
    (2) Long-sleeved gloves.
    (3) Boots or shoe covers.
    (4) Coveralls or lab aprons.

    Note: ``Guidelines for the Selection of Chemical Protective 
Clothing'', Third Edition, 1987, available from the American Conference 
of Governmental Industrial Hygienists, 1330 Kemper Meadow Drive, 
Cincinnati, OH 45240-1634, provides information on the proper clothing 
for the cargo being handled.

    (b) The section applies during the following operations:
    (1) Sampling cargo.
    (2) Transferring cargo.
    (3) Making or breaking cargo hose connections.
    (4) Gauging a cargo tank, unless gauging is by closed system.
    (5) Opening cargo tanks.
    (c) Coveralls or lab aprons may be replaced by splash suits or 
aprons constructed of light weight or disposable materials if, in the 
judgment of the person in charge of cargo handling operations,
    (1) Contact with the cargo is likely to occur only infrequently and 
accidentally; and
    (2) The splash suit or apron is disposed of immediately after 
contamination.
    (d) Splash protective eyewear must be tight-fitting chemical-splash 
goggles, face shields, or similar items intended specifically for eye 
protection from chemical splashing or spraying.
    (e) The person in charge of cargo handling operations shall ensure 
that each person in the vicinity of an operation listed in the paragraph 
(b) of this section or in the vicinity of tanks, piping, or pumps being 
used to transfer the

[[Page 206]]

cargo wears splash protective eyewear under paragraph (d) of this 
section.

[CGD 88-100, 54 FR 40040, Sept. 29, 1989, as amended by USCG-1999-6216, 
64 FR 53227, Oct. 1, 1999]



Sec. 151.50-74  Ethylidene norbornene.

    When Table 151.05 refers to this section, the following apply:
    (a) 151.50-5 (g) and (h)
    (b) Rubber hoses or fittings may not be used in transfer operations.

[CGD 80-001, 46 FR 63279, Dec. 31, 1981]



Sec. 151.50-75  Ferric chloride solution.

    A containment system (cargo tank piping system, venting system, and 
gauging system) carrying this solution must be lined with rubber, 
corrosion resistant plastic, or a material approved by the Commandant 
(CG-ENG).

[CGD 80-001, 46 FR 63279, Dec. 31, 1981, as amended by CGD 82-063b, 48 
FR 4781, Feb. 3, 1983; CGD 88-100, 54 FR 40041, Sept. 29, 1989; 55 FR 
17276, Apr. 24, 1990]



Sec. 151.50-76  Hydrochloric acid, spent (NTE 15%).

    (a)(1) Gravity type cargo tanks must be designed and tested to meet 
the rules of the American Bureau of Shipping for a head of water at 
least 8 feet above the tank top or the highest level the lading may 
rise, whichever is greater. The plate thickness of any part of the tank 
may not be less than three-eighths inch. A shell plating of a barge may 
not be on the boundary of any part of the cargo tank.
    (2) Gravity tank vents must:
    (i) Terminate above the weatherdeck, clear of all obstructions and 
away from any from any source of ignition; and
    (ii) Be fitted with a single flame screen or two fitted flame 
screens as described in Sec. 151.03-25. Neither a shut-off valve nor a 
frangible disk may be fitted in the vent lines.
    (b) Openings in the tanks are prohibited below deck, except for 
access openings used for inspection and maintenance of tanks, or unless 
otherwise specifically approved by the Commandant (CG-ENG). Openings 
must be fitted with bolted cover plates and acid-resistant gaskets.
    (c) Where special arrangements are approved by the Commandant (CG-
ENG) to permit a pump suction to be led from the bottom of the tank, the 
filling and discharge lines must be fitted with shutoff valves located 
above the weatherdeck or operable from it.
    (d) The outage may not be less than 1 percent.
    (e) An enclosed compartment containing, or a compartment adjacent 
to, a cargo tank:
    (1) May have no electrical equipment that does not meet or exceed 
class I-B electrical requirements; and
    (2) Must have at least one gooseneck vent of 2.5 inch diameter or 
greater. The structural arrangement of the compartment must provide for 
the free passage of air and gases to the vent or vents.
    (f) No lights may be used during the cargo transfer operations, 
except installed electric or portable battery lights. Smoking is 
prohibited and the person in charge of cargo transfer shall ensure that 
``No Smoking'' signs are displayed during cargo transfer operations.
    (g) Tanks approved for the transportation of acid cargoes subject to 
this section may not be used for the transportation of any other 
commodity, except upon authorization by the Commandant (CG-ENG).
    (h) Each cargo tank must be examined internally at least once in 
every 4 years. If the lining of the cargo tank has deteriorated in 
service or is not in place, the Marine Inspector may require the tank to 
be tested by such nondestructive means as he may consider necessary to 
determine its condition.

[CGD 80-001, 46 FR 63279, Dec. 31, 1981, as amended by CGD 82-063b, 48 
FR 4781, Feb. 3, 1983]



Sec. 151.50-77  Fluorosilicic acid (30% or less) (hydrofluorosilicic acid).

    (a) Hydrofluorosilicic acid must be carried in gravity or pressure 
type cargo tanks independent of the vessel's structure. The tanks must 
be lined with rubber or other equally suitable material approved by the 
Commandant (CG-ENG). See Sec. 151.15-3(f)(2).
    (b) Notwithstanding the provisions of Sec. 151.50-20(b)(3), no 
compressed air may be used to discharge hydrofluorosilicic

[[Page 207]]

acid from gravity type cargo tanks unless:
    (1) The tanks are of cylindrical shape with dished heads, and
    (2) The air pressure does not exceed:
    (i) The design pressure of the tank, and
    (ii) 10 pounds per square inch gauge. The tanks must be fitted with 
pressure relief devices.
    (c) During cargo transfer, a water hose must be connected to a water 
supply and be ready for immediate use. Any leakage or spillage of acid 
must be immediately washed down. This requirement can be met by 
facilities provided from shore.

[CGD 80-001, 46 FR 63279, Dec. 31, 1981, as amended by CGD 82-063b, 48 
FR 4781, Feb. 3, 1983; CGD 92-100, 59 FR 17028, Apr. 11, 1994]



Sec. 151.50-79  Methyl acetylene-propadiene mixture.

    (a) The composition of the methyl acetylene-propadiene mixture at 
loading must be within one of the following sets of composition limits:
    (1) Composition 1 is:
    (i) Maximum methyl acetylene to propadiene molar ratio of 3 to 1;
    (ii) Maximum combined concentration of methyl acetylene and 
propadiene of 65 mole percent;
    (iii) Minimum combined concentration of propane, butane, and 
isobutane of 24 mole percent, of which at least one-third (on a molar 
basis) must be butanes and one-third propane; and
    (iv) Maximum combined concentration of propylene and butadiene of 10 
mole percent.
    (2) Composition 2 is:
    (i) Maximum methyl acetylene and propadiene combined concentration 
of 30 mole percent;
    (ii) Maximum methyl acetylene concentration of 20 mole percent;
    (iii) Maximum propadiene concentration of 20 mole percent;
    (iv) Maximum propylene concentration of 45 mole percent;
    (v) Maximum butadiene and butylenes combined concentration of 2 mole 
percent;
    (vi) Minimum saturated C4 hydrocarbon concentration of 4 
mole percent; and
    (vii) Minimum propane concentration of 25 mole percent.
    (b) A barge carrying a methyl acetylene-propadiene mixture must have 
a refrigeration system that does not compress the cargo vapor or have a 
refrigeration system with the following features:
    (1) A vapor compressor that does not raise the temperature and 
pressure of the vapor above 60  deg.C (140  deg.F) and 1.72 MPa gauge 
(250 psig) during its operations, and that does not allow vapor to 
stagnate in the compressor while it continues to run.
    (2) At the discharge piping from each compressor stage or each 
cylinder in the same stage of a reciprocating compressor:
    (i) Two temperature actuated shutdown switches set to operate at 60 
deg.C (140  deg.F) or less;
    (ii) A pressure actuated shutdown switch set to operate at 1.72 MPa 
gauge (250 psig) or less; and
    (iii) A safety relief valve set to relieve at 1.77 MPa gauge (256 
psig) or less anywhere except into the compressor suction line.
    (c) The piping system, including the cargo refrigeration system, for 
tanks to be loaded with methyl acetylene-propadiene mixture must be 
completely separate from piping and refrigeration systems for other 
tanks. If the piping system for the tanks to be loaded with methyl 
acetylene-propadiene mixture is not independent, the required piping 
separation must be accomplished by the removal of spool pieces, valves 
or other pipe sections and the installation of blank flanges at these 
locations. The required separation applies to all liquid and vapor 
piping, liquid and vapor vent lines and any other possible connections, 
such as common inert gas supply lines.

[CGD 80-001, 46 FR 63279, Dec. 31, 1981, as amended by USCG-2014-0688, 
79 FR 58284, Sept. 29, 2014]



Sec. 151.50-80  Nitric acid (70% or less).

    (a) Tanks, cargo piping, valves, fittings, and flanges (where 
exposed to the acid) must be lined with nitric acid resistant rubber or 
fabricated from nitric acid resistant stainless steel. See Sec. 151.15-
3(f)(2).
    (b) During cargo transfer, a water hose must be connected to a water 
supply, ready for immediate use. Any

[[Page 208]]

leakage or spillage of acid must be immediately washed down. This 
requirement can be met by facilities provided from shore.
    (c) Nitric acid contaminated by other chemicals, oils, solvents, 
etc. may not be transported in bulk without an authorization from the 
Commandant (CG-ENG).

[CGD 80-001, 46 FR 63280, Dec. 31, 1981, as amended by CGD 82-063b, 48 
FR 4781, Feb. 3, 1983; CGD 88-100, 54 FR 40041, Sept. 29, 1989]



Sec. 151.50-81  Special operating requirements for heat sensitive cargoes.

    When table 151.05 refers to this section, the following apply to the 
cargo:
    (a) Must not be carried in a tank equipped with heating coils unless 
the heating supply to the coils is disconnected.
    (b) Must not be carried in a tank adjacent to another tank 
containing an elevated temperature cargo.
    (c) Must not be carried in a deck tank.

[CGD 80-001, 46 FR 63280, Dec. 31, 1981, as amended by CGD 88-100, 54 FR 
40041, Sept. 29, 1989]



Sec. 151.50-84  Sulfur dioxide.

    (a) Sulfur dioxide that is transported under the provisions of this 
part may not contain more than 100 ppm of water.
    (b) Cargo piping must be at least Schedule 40 pipe.
    (c) Flanges must be 150 lb. A.N.S.I. Standard minimum with tongue 
and groove or raised face.
    (d) A cargo tank must:
    (1) Meet the requirements of a Class I welded pressure vessel;
    (2) Be designed for a maximum allowable working pressure of at least 
125 psig;
    (3) Be hydrostatically tested every two years to at least 188 psig;
    (4) Be provided with one or more manholes that are fitted with a 
cover sized not less than 15 inches by 23 inches or 13 inches nominal 
diameter, located above the maximum liquid level, and as close as 
possible to the top of the tank;
    (5) Have no openings other than those required in paragraph (d)(4) 
of this section;
    (6) Have no liquid level gauges other than closed or indirect 
gauges;
    (7) Have all valves and the closed gauge that is required by Table 
151.05 bolted to the cover or covers that are required in paragraph 
(d)(4) of this section;
    (8) Have a metal housing that is fitted with a drain and vent 
connection protecting all valves and the closed gauge within this 
housing against mechanical damage;
    (9) Have all safety relief valves discharging into the protective 
housing;
    (10) Not be interconnected with another cargo tank by piping or 
manifold that carriers cargo liquid, except vapor lines connected to a 
common header, and
    (11) Have an excess flow valve that is located on the inside of the 
tank for every liquid and vapor connection, except the safety relief 
valve;
    (12) Have no bypass opening on any excess flow valve.
    (e) Cargo transfer operations:
    (1) May not be conducted with more than one cargo tank at a time 
unless each tank is filled from or discharged to shore tanks through 
separate lines;
    (2) Must be conducted with connections between fixed barge piping 
and shore piping of either Schedule 40 pipe having flexible metallic 
joints that meet Sec. 151.04-5(h) or of flexible metallic hose that is 
acceptable to the Commandant (CG-ENG);
    (3) From barge to shore must be by pressurization with an oil free, 
non-reactive gas that has a maximum of 100 ppm moisture;
    (4) Must be conducted with vapor return to shore connections that 
ensure that all vapor is returned to shore; and
    (5) Must be conducted with every person on the barge carrying a 
respiratory protective device that protects the wearer against sulfur 
dioxide vapors and provides respiratory protection for emergency escape 
from a contaminated area that results from cargo leakage.
    (f) Respiratory protective equipment must be of a size and weight 
that allows unrestricted movement and wearing of a lifesaving device.
    (g) After the completion of cargo transfer, all liquid sulfur 
dioxide in the cargo piping must be removed and

[[Page 209]]

cargo transfer piping must be disconnected at the cargo tanks. After the 
cargo piping is disconnected, both ends of the line must be plugged or 
fitted with blind flanges.

[CGD 80-001, 46 FR 63280, Dec. 31, 1981, as amended by CGD 82-063b, 48 
FR 4781, Feb. 3, 1983; CGD 88-100, 54 FR 40041, Sept. 29, 1989; 55 FR 
17276, Apr. 24, 1990; USCG-2014-0688, 79 FR 58284, Sept. 29, 2014]



Sec. 151.50-86  Alkyl (C7-C9) nitrates.

    (a) The carriage temperature of octyl nitrates must be maintained 
below 100  deg.C (212  deg.F) in order to prevent the occurrence of a 
self-sustaining exothermic decomposition reaction.
    (b) Octyl nitrates may not be carried in a deck tank unless the tank 
has a combination of insulation and a water deluge system sufficient to 
maintain the tank's cargo temperature below 100  deg.C (212  deg.F) and 
the cargo temperature rise at or below 1.5  deg.C(2.7  deg.F)/hour, for 
a fire of 650  deg.C (1200  deg.F).

[CGD 88-100, 54 FR 40040, Sept. 29, 1989; CGD 92-100, 59 FR 17028, Apr. 
11, 1994]



    Subpart 151.55_Special Requirements for Materials of Construction



Sec. 151.55-1  General.

    (a) This section provides special requirements for the materials of 
construction of equipment that may come into contact with various 
cargoes. Table 151.05 contains specific requirements for various 
cargoes.
    (b) Copper, copper alloys, zinc, and aluminum shall not be used as 
materials of construction for tanks, pipelines, valves, fittings, and 
other items of equipment that may come in contact with the cargo liquid 
or vapor. (Equivalent to Sec. 151.56-1(a),(b), and (c).)
    (c) Copper, copper alloys, zinc, galvanized steel, and mercury shall 
not be used as materials of construction for tanks, pipelines, valves, 
fittings, and other items of equipment that may come in contact with the 
cargo liquid or vapor. (Equivalent to Sec. 151.56-1(b),(c), and (g).)
    (d) Aluminum, magnesium, zinc, and lithium shall not be used as 
materials of construction for tanks, pipelines, valves, fittings, and 
other items of equipment that may come in contact with the cargo liquid 
or vapor. (Equivalent to Sec. 151.56-1(a),(c), and (d).)
    (e) Copper and copper bearing alloys shall not be used as materials 
of construction for tanks, pipelines, valves, fittings, and other items 
of equipment that may come in contact with the cargo liquid or vapor. 
(Equivalent to Sec. 151.56-1(b).)
    (f) Aluminum or copper or alloys of either shall not be used as 
materials of construction for tanks, pipelines, valves, fittings, and 
other items of equipment that may come in contact with the cargo vapor 
or liquid. (Equivalent to Sec. 151.56-1(a) and (b).)
    (g) Aluminum, stainless steel, or steel covered with a suitable 
protective lining or coating shall be used as materials of construction 
for tanks, pipelines, valves fittings, and other items of equipment that 
may come in contact with the cargo liquid or vapor. (Equivalent to 
Sec. 151.58-1(a).)
    (h) Alkaline or acidic materials, such as caustic soda or sulfuric 
acid, should not be allowed to contaminate this cargo.
    (i) For concentrations of 98 percent or greater, aluminum or 
stainless steel shall be used as materials of construction. For 
concentrations of less than 98 percent, 304L or 316 stainless steel 
shall be used as materials of construction.
    (j) Zinc, alloys that have more than 10 percent zinc by weight, and 
aluminum may not be used as materials of construction for tanks, 
pipelines, valves, fittings, and other items of equipment that may come 
in contact with cargo liquid or vapor. (Equivalent to Sec. 151.56-1(a) 
and (c).)

[CGFR 70-10, 35 FR 3714, Feb. 25, 1970, as amended by CGD 73-275R, 41 FR 
3087, Jan. 21, 1976; CGD 75-223, 42 FR 8378, Feb. 10, 1977; CGD 88-100, 
54 FR 40041, Sept. 29, 1989]



           Subpart 151.56_Prohibited Materials of Construction



Sec. 151.56-1  Prohibited materials.

    When one of the following paragraphs of this section is referenced 
in table 151.05, the materials listed in that paragraph may not be used 
in components that contact the cargo or its vapor:
    (a) Aluminum or aluminum alloys.

[[Page 210]]

    (b) Copper or copper alloys.
    (c) Zinc, galvanized steel, or alloys having more than 10 percent 
zinc by weight.
    (d) Magnesium.
    (e) Lead.
    (f) Silver or silver alloys.
    (g) Mercury.

[CGD 88-100, 54 FR 40041, Sept. 29, 1989]



            Subpart 151.58_Required Materials of Construction



Sec. 151.58-1  Required materials.

    When one of the following paragraphs of this section is referenced 
in table 151.05, only those materials listed in that paragraph may be 
used in components that contact the cargo or its vapor:
    (a) Aluminum, stainless steel, or steel covered with a protective 
lining or coating. (See Sec. 151.15-3(f)(2).)
    (b)-(c) [Reserved]
    (d) Solid austenitic stainless steel.
    (e) Stainless steel or steel covered with a suitable protective 
lining or coating. (See Sec. 151.15-3(f)(2).)

[CGD 88-100, 54 FR 40041, Sept. 29, 1989]

                           PART 152 [RESERVED]



PART 153_SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS 
HAZARDOUS MATERIALS--Table of Contents



                            Subpart A_General

Sec.
153.0  Availability of materials.
153.1  Applicability.
153.2  Definitions and acronyms.
153.3  Right of appeal.
153.4  Incorporation by reference.
153.7  Ships built before December 27, 1977 and non-self-propelled ships 
          built before July 1, 1983: Application.
153.8  Procedures for requesting an endorsed Certificate of Inspection.
153.9  Foreign flag vessel endorsement application.
153.10  Procedures for requesting alternatives and waivers; termination 
          of waivers.
153.12  IMO Certificates for United States Ships.
153.15  Conditions under which the Coast Guard issues a Certificate of 
          Inspection or Certificate of Compliance.
153.16  Requirements for foreign flag vessel permits.
153.30  Special area endorsement.
153.40  Determination of materials that are hazardous.

                     Subpart B_Design and Equipment

                       General Vessel Requirements

153.190  Stability requirements.
153.201  Openings to accommodation, service or control spaces.
153.208  Ballast equipment.
153.209  Bilge pumping systems.
153.214  Personnel emergency and safety equipment.
153.215  Safety equipment lockers.
153.216  Shower and eyewash fountains.
153.217  Access to enclosed spaces and dedicated ballast tanks.
153.219  Access to double bottom tanks serving as dedicated ballast 
          tanks.

                        Cargo Containment Systems

153.230  Type I system.
153.231  Type II system.
153.232  Type III system.
153.233  Separation of tanks from machinery, service and other spaces.
153.234  Fore and aft location.
153.235  Exceptions to cargo piping location restrictions.
153.236  Prohibited materials.
153.238  Required materials.
153.239  Use of cast iron.
153.240  Insulation.

                               Cargo Tanks

153.250  Double-bottom and deep tanks as cargo tanks.
153.251  Independent cargo tanks.
153.252  Special requirement for an independent cargo tank.
153.254  Cargo tank access.
153.256  Trunks, domes, and openings of cargo tanks.
153.266  Tank linings.

               Piping Systems and Cargo Handling Equipment

153.280  Piping system design.
153.281  Piping to independent tanks.
153.282  Cargo filling lines.
153.283  Valving for cargo piping.
153.284  Characteristics of required quick closing valves.
153.285  Valving for cargo pump manifolds.
153.292  Separation of piping systems.
153.294  Marking of piping systems.
153.296  Emergency shutdown stations.
153.297  Emergency actuators at the point of cargo control.

                    Cargo Handling Space Ventilation

153.310  Ventilation system type.
153.312  Ventilation system standards.

[[Page 211]]

153.314  Ventilation of spaces not usually occupied.
153.316  Special cargo pumproom ventilation rate.

                             Cargo Pumprooms

153.330  Access.
153.332  Hoisting arrangement.
153.333  Cargo pump discharge pressure gauge.
153.334  Bilge pumping systems.
153.336  Special cargo pump or pumproom requirements.

                          Cargo Venting Systems

153.350  Location of B/3 vent discharges.
153.351  Location of 4 m vent discharges.
153.352  B/3 and 4 m venting system outlets.
153.353  High velocity vents.
153.354  Venting system inlet.
153.355  PV venting systems.
153.358  Venting system flow capacity.
153.360  Venting system restriction.
153.361  Arrangements for removal of valves from venting systems having 
          multiple relief valves.
153.362  Venting system drain.
153.364  Venting system supports.
153.365  Liquid overpressurization protection.
153.368  Pressure-vacuum valves.
153.370  Minimum relief valve setting for ambient temperature cargo 
          tanks.
153.371  Minimum relief valve setting for refrigerated cargo tanks.
153.372  Gauges and vapor return for cargo vapor pressures exceeding 100 
          kPa (approx. 14.7 psia).

                          Cargo Gauging Systems

153.400  General requirements for gauges.
153.404  Standards for containment systems having required closed 
          gauges.
153.406  Standards for containment systems having required restricted 
          gauges.
153.407  Special requirements for sounding tube gauges.
153.408  Tank overflow control.
153.409  High level alarms.

                    Cargo Temperature Control Systems

153.430  Heat transfer systems; general.
153.432  Cooling systems.
153.434  Heat transfer coils within a tank.
153.436  Heat transfer fluids: compatibility with cargo.
153.438  Cargo pressure or temperature alarms required.
153.440  Cargo temperature sensors.

        Special Requirements for Flammable or Combustible Cargoes

153.460  Fire protection systems.
153.461  Electrical bonding of independent tanks.
153.462  Static discharges from inert gas systems.
153.463  Vent system discharges.
153.465  Flammable vapor detector.
153.466  Electrical equipment.

               Design and Equipment for Pollution Control

153.470  System for discharge of NLS residue to the sea: Categories A, 
          B, C, and D.
153.480  Stripping quantity for Category B and C NLS tanks on ships 
          built after June 30, 1986: Categories B and C.
153.481  Stripping quantities and interim standards for Category B NLS 
          tanks on ships built before July 1, 1986: Category B.
153.482  Stripping quantities and interim standards for Category C NLS 
          tanks on ships built before July 1, 1986: Category C.
153.483  Restricted voyage waiver for Category B and C NLS tanks on 
          ships built before July 1, 1986: Category B and C.
153.484  Prewash equipment.
153.486  Design and equipment for removing NLS residue by ventilation: 
          Categories A, B, C, and D.
153.488  Design and equipment for tanks carrying high melting point 
          NLSs: Category B.
153.490  Cargo Record Book and Approved Procedures and Arrangements 
          Manual: Categories A, B, C, and D.
153.491  Waiver of certain equipment for dedicated cargo tanks.

                          Special Requirements

153.500  Inert gas systems.
153.501  Requirement for dry inert gas.
153.515  Special requirements for extremely flammable cargoes.
153.520  Special requirements for carbon disulfide.
153.525  Special requirements for unusually toxic cargoes.
153.526  Toxic vapor detectors.
153.527  Toxic vapor protection.
153.530  Special requirements for alkylene oxides.
153.545  Special requirements for liquid sulfur.
153.554  Special requirements for acids.
153.555  Special requirements for inorganic acids.
153.556  Special requirements for sulfuric acid and oleum.
153.557  Special requirements for hydrochloric acid.
153.558  Special requirements for phosphoric acid.
153.559  Special requirements for nitric acid (less than 70 percent).
153.560  Special requirements for Alkyl (C7-C9) nitrates.
153.565  Special requirements for temperature sensors.

[[Page 212]]

153.602  Special requirements for cargoes reactive with water.

                         Testing and Inspection

153.806  Loading information.
153.808  Examination required for a Certificate of Compliance.
153.809  Procedures for having the Coast Guard examine a vessel for a 
          Certificate of Compliance.
153.812  Inspection for Certificate of Inspection.

                          Subpart C_Operations

                     Documents and Cargo Information

153.900  Certificates and authorization to carry a bulk liquid hazardous 
          material.
153.901  Documents: Posting, availability, and alteration.
153.902  Expiration and invalidation of the Certificates of Compliance.
153.903  Operating a United States ship in special areas: Categories A, 
          B, and C.
153.904  Limitations in the endorsement.
153.905  Regulations required to be on board.
153.907  Cargo information.
153.908  Cargo viscosity and melting point information; measuring cargo 
          temperature during discharge: Categories A, B, and C.
153.909  Completing the Cargo Record Book and record retention: 
          Categories A, B, C, and D.
153.910  Cargo piping plan.
153.912  Certficate of inhibition or stabilization.

                 General Cargo Operational Requirements

153.920  Cargo quantity limitations.
153.921  Explosives.
153.923  Inerting systems.

                          General Vessel Safety

153.930  Cargo antidotes.
153.931  Obstruction of pumproom ladderways.
153.932  Goggles and protective clothing.
153.933  Chemical protective clothing.
153.934  Entry into spaces containing cargo vapor.
153.935  Opening of tanks and cargo sampling.
153.935a  Storage of cargo samples.
153.936  Illness, alcohol, drugs.

                     Marking of Cargo Transfer Hose

153.940  Standards for marking of cargo hose.

                        Cargo Transfer Procedures

153.953  Signals during cargo transfer.
153.955  Warning signs during cargo transfer.
153.957  Persons in charge of transferring liquid cargo in bulk or 
          cleaning cargo tanks.
153.959  Approval to begin transfer operations required.
153.964  Discharge by gas pressurization.
153.966  Discharge by liquid displacement.
153.968  Cargo transfer conference.
153.970  Cargo transfer piping.
153.972  Connecting a cargo hose.
153.975  Preparation for cargo transfer.
153.976  Transfer of packaged cargo or ship's stores.
153.977  Supervision of cargo transfer.
153.979  Gauging with a sounding tube.
153.980  Isolation of automatic closing valves.
153.981  Leaving room in tank for cargo expansion.
153.983  Termination procedures.

                        Special Cargo Procedures

153.1000  Special operating requirements for cargoes reactive with 
          water.
153.1002  Special operating requirements for heat sensitive cargoes.
153.1003  Prohibited carriage in deck tanks.
153.1004  Inhibited and stabilized cargoes.
153.1010  Alkylene oxides.
153.1011  Changing containment systems and hoses to and from alkylene 
          oxide service.
153.1020  Unusually toxic cargoes.
153.1025  Motor fuel antiknock compounds.
153.1035  Acetone cyanohydrin or lactonitrile solutions.
153.1040  Carbon disulfide.
153.1045  Inorganic acids.
153.1046  Sulfuric acid.
153.1052  Carriage of other cargoes in acid tanks.
153.1060  Benzene.
153.1065  Sodium chlorate solutions.

 Approval of Surveyors and Handling of Categories A, B, C, and D Cargo 
                             and NLS Residue

153.1100  Responsibility of the person in charge.
153.1101  Procedures for getting a Surveyor: Approval of Surveyors.
153.1102  Handling and disposal of NLS residue: Categories A, B, C, and 
          D.
153.1104  Draining of cargo hose: Categories A, B, C, and D.
153.1106  Cleaning agents.
153.1108  Heated prewash for solidifying NLS, high viscosity NLS and 
          required prewashes of NLS whose viscosity exceeds 25 mPa sec 
          at 20  deg.C: Categories A, B, and C.
153.1112  Prewash for tanks containing Category A NILS residue.
153.1114  Conditions under which a prewash may be omitted: Categories A, 
          B, and C.
153.1116  Prewash for tanks unloaded without following the approved 
          Procedures and Arrangements Manual: Category B and C.

[[Page 213]]

153.1118  Prewash of Categories B and C cargo tanks not meeting 
          stripping standards: Categories B and C.
153.1119  When to prewash and discharge NLS residues from a prewash; 
          unloading an NLS cargo in a country whose Administration is 
          not signatory to MARPOL 73/78: Categories A, B, and C.
153.1120  Procedures for tank prewash: Categories A, B, and C.
153.1122  Discharges of NLS residue from tank washing other than a 
          prewash: Categories A, B, and C.
153.1124  Discharges of Category D NLS residue.
153.1126  Discharge of NLS residue from a slop tank to the sea: 
          Categories A, B, C, and D.
153.1128  Discharge of NLS residue from a cargo tank to the sea: 
          Categories A, B, C, and D.
153.1130  Failure of slops discharge recording equipment; operating 
          with, reporting failures, and replacing pollution equipment: 
          Category A, B, C, D.
153.1132  Reporting spills and non-complying discharges: Category A, B, 
          C, and D.

                               Maintenance

153.1500  Venting system rupture disks.
153.1502  Fixed ballast relocation.
153.1504  Inspection of personnel emergency and safety equipment.

  Subpart D_Test and Calculation Procedures for Determining Stripping 
          Quantity, Clingage NLS Residue, and Total NLS Residue

153.1600  Equipment required for conducting the stripping quantity test.
153.1602  Test procedure for determining the stripping quantity.
153.1604  Determining the stripping quantity from the test results.
153.1608  Calculation of total NLS residue and clingage NLS residue.

Table 1 to Part 153--Summary of minimum requirements
Table 2 to Part 153--Cargoes Not Regulated Under Subchapters D or O of 
          This Chapter When Carried in Bulk on Non-Oceangoing Barges
Appendix I to Part 153 [Reserved]
Appendix II to Part 153--Metric Units Used in Part 153

    Authority: 46 U.S.C. 3703; Department of Homeland Security 
Delegation No. 0170.1. Section 153.40 issued under 49 U.S.C. 5103. 
Sections 153.470 through 153.491, 153.1100 through 153.1132, and 
153.1600 through 153.1608 also issued under 33 U.S.C. 1903 (b).

    Source: CGD 73-96, 42 FR 49027, Sept. 26, 1977, unless otherwise 
noted.

    Editorial Note: Nomenclature changes to part 153 appear by CGD-95-
072, 60 FR 50465, Sept. 29, 1995, CGD-96-041, 61 FR 50732, Sept. 27, 
1996, USCG-2009-0702, 74 FR 49235, Sept. 25, 2009, and USCG-2012-0832, 
77 FR 59784, Oct. 1, 2012.



                            Subpart A_General



Sec. 153.0  Availability of materials.

    (a) Various sections in this part refer to the following documents 
which are incorporated in Annex II of MARPOL 73/78.
    (1) IMO Standards for Procedures and Arrangements for the Discharge 
of Noxious Liquid Substances, Resolution MEPC 18(22), 1985 in effect on 
April 6, 1987.
    (2) IMO International Code for the Construction and Equipment of 
Ships Carrying Dangerous Chemicals in Bulk, Resolution MEPC 19(22), 1985 
in effect on April 6, 1987.
    (3) IMO Code for the Construction and Equipment of Ships Carrying 
Dangerous Chemicals in Bulk, Resolution MEPC 20(22), 1985 in effect on 
April 6, 1987.
    (b) The IMO documents listed in this section are available from the 
following:
    (1) IMO Secretariat, Publications section, 4 Albert Embankment, 
London SE1 7SR, United Kingdom, Telex 23588;
    (2) New York Nautical Instrument and Service Company, 140 West 
Broadway, New York, NY 10013;
    (3) Baker, Lyman & Company, 3220 South I-10 Service Road, Metairie, 
LA 70001.
    (4) UNZ & Company, 190 Baldwin Avenue, Jersey City, NJ 07306.
    (5) Southwest Instrument Company, 235 West 7th Street, San Pedro, CA 
90731.
    (6) Marine Education Textbooks, 124 North Van Avenue, Houma, LA 
70363-5895.

[CGD 81-101, 52 FR 7777, Mar. 12, 1987, as amended by CGD 92-100, 59 FR 
17028, Apr. 11, 1994]



Sec. 153.1  Applicability.

    This part applies to the following:
    (a) All United States self-propelled ships and those foreign self-
propelled ships operating in United States waters that carry in bulk a 
cargo listed in

[[Page 214]]

Table 1 or allowed in a written permission under Sec. 153.900(d), 
unless--
    (1) The ship is carrying the cargo under 33 CFR part 151;
    (2) The ship is carrying the cargo in a portable tank under subpart 
98.30 or 98.33 of this chapter; or
    (3) The ship is an offshore supply vessel carrying the cargo under 
subpart 98.31 of the chapter; or
    (b) All United States oceangoing non-self-propelled ships and those 
foreign non-self-propelled ships operating in United States waters that 
carry in bulk a Category A, B, or C NLS cargo listed in Table 1 or 
allowed in a written permission under Sec. 153.900(d), unless--
    (1) The ship is carrying the cargo under 33 CFR part 151;
    (2) The ship is carrying the cargo in a portable tank under subpart 
98.30 or 98.33 of this chapter;
    (3) The ship is an offshore supply vessel carrying the cargo under 
subpart 98.31 of this chapter; or
    (4) The ship's Certificate of Inspection is endorsed for a limited 
short protected coastwise route and the ship is constructed and 
certificated primarily for service on an inland route.
    (c) All ships that carry a bulk liquid, liquefied gas, or compressed 
gas cargo that is not--
    (1) Listed in Table 1 of this part;
    (2) Listed in Table 2 of this part;
    (3) Carried under a written permission granted under 
Sec. 153.900(d);
    (4) Carried under part 30 through 35, 98, 151, or 154 of this 
chapter; or
    (5) Carried as an NLS under 33 CFR part 151.

[CGD 81-101, 52 FR 7777, Mar. 12, 1987, as amended by CGD 84-025, 53 FR 
15844, May 4, 1988; CGD 81-101, 53 FR 28974, Aug. 1, 1988 and 54 FR 
12629, Mar. 28, 1989; CGD 84-043, 55 FR 37413, Sept. 11, 19905; CGD 96-
041, 61 FR 50732, Sept. 27, 1996]



Sec. 153.2  Definitions and acronyms.

    As used in this part:
    Accommodation spaces means halls, dining rooms, lounges, lavatories, 
cabins, staterooms, offices, hospitals, cinemas, game and hobby rooms, 
pantries containing no cooking appliances, and similar permanently 
enclosed spaces.
    Adequate reception facility means each facility certified as 
adequate under 33 CFR 158.160 and each facility provided by a 
Administration signatory to MARPOL 73/78 under Regulation 7 of Annex II.
    Annex II means Annex II to MARPOL 73/78 and is the Annex to MARPOL 
73/78 regulating the discharge of noxious liquid substances to the sea.
    B means the breadth of the vessel and is defined in Sec. 42.13-15(d) 
of this chapter.
    Built means that a ship's construction has reached any of the 
following stages:
    (1) The keel is laid.
    (2) The mass of the partially assembled ship is 50,000 kg.
    (3) The mass of the partially assembled ship is one percent of the 
estimated mass of the completed ship.
    Cargo area means that part of a vessel that includes the cargo 
tanks, spaces adjacent to the cargo tanks and the part of the deck over 
the cargo tanks and adjacent spaces.
    Cargo containment system means a cargo tank, its cargo piping 
system, its venting system, and its gauging system.
    Cargo handling space means an enclosed space that must be entered 
during a routine loading, carriage, or discharge of cargo and that 
contains an element of the cargo containment system having a seal or 
packing to prevent the escape of cargo, such as a valve, cargo pump, or 
cargo vapor compressor.
    Cargo piping system means a tankship's permanently installed piping 
arrangement, including any valves and pumps, that carries cargo to or 
from a cargo tank.
    Cargo tank means a tank that:
    (1) Is part of or permanently affixed to a tankship; and
    (2) Carries a cargo described in part 153, table 1--SUMMARY OF 
MINIMUM REQUIREMENTS in any quantity, including residual liquid or 
vapor.
    Certificate of Compliance means a certificate issued by the Coast 
Guard that a foreign flag vessel had been examined and found to comply 
with the regulations in this chapter.
    Closed gauging system means an arrangement for gauging the amount of 
cargo in a tank, such as a float and tape or a magnetically coupled 
float and indicator, that does not have any

[[Page 215]]

opening through which cargo vapor or liquid can escape.
    Combustible is defined in Sec. 30.10-15 of this chapter.
    Commandant means Commandant (staff symbol), Attn: (Staff title), 
U.S. Coast Guard Stop (mailing code) 2703 Martin Luther King Jr. Avenue 
SE., Washington, DC 20593-(mailing code).

The term is often followed by a mailing code in parentheses. The mailing 
address should include any mailing code and should be written as 
follows:

Commandant (mailing code), U.S. Coast Guard, 2100 2nd Street SW., Stop 
7126, Washington, DC 20593-7126.

    Control space is defined in Sec. 30.10-19a of this chapter.
    Cycle, means that the tank washing machine progresses through 
complete rotations until it reaches an orientation identical to its 
starting orientation.

    Note: For a typical one or two nozzle tank washing machine that 
rotates in both the horizontal and vertical planes though more slowly in 
one than the other, a cycle would be at least one rotation in each plane 
of rotation.

    Dedicated ballast tank means a tank that is used only for ballast.
    Emergency shutdown station means a part of the tankship where the 
required emergency shutdown controls are clustered.
    Flammable is defined in Sec. 30.10-22 of this chapter.
    Forward perpendicular is defined in Sec. 42.13-15(b) of this 
chapter.
    Hazardous material means a liquid material or substance that is--
    (1) Flammable or combustible;
    (2) Designated a hazardous substance under section 311(b) of the 
Federal Water Pollution Control Act (33 U.S.C. 1321); or
    (3) Designated a hazardous material under 49 U.S.C. 5103.

    Note: The Environmental Protection Agency designates hazardous 
substances in 40 CFR Table 116.A. The Coast Guard designates hazardous 
materials that are transported as bulk liquids by water in Sec. 153.40.

    High viscosity NLS includes high viscosity Category B NLS and high 
viscosity Category C NLS.
    High viscosity Category B NLS means any Category B NLS having a 
viscosity of at least 25 mPa.s at 20  deg.C and at least 25 mPa.s at the 
time it is unloaded.
    High viscosity Category C NLS means any Category C NLS having a 
viscosity of at least 60 mPa.s at 20  deg.C and at least 60 mPa.s at the 
time it is unloaded.
    IMO means the International Maritime Organization (IMO, formerly 
Inter-Governmental Maritime Consultative Organization or IMCO).
    IMO Bulk Chemical Code includes the IMO International Code for the 
Construction and Equipment of Ships Carrying Dangerous Chemicals in 
Bulk, Resolution MEPC 19(22), 1985 and the IMO Code for the Construction 
and Equipment of Ships Carrying Dangerous Chemicals in Bulk, Resolution 
MEPC 20(22), 1985.
    IMO Certificate includes a Certificate of Fitness for the Carriage 
of Dangerous Chemicals in Bulk issued under the IMO Code for the 
Construction and Equipment of Ships Carrying Dangerous Chemicals in 
Bulk, Resolution MEPC 20(22), 1985 and an International Certificate of 
Fitness for the Carriage of Dangerous Chemicals in Bulk issued under the 
IMO International Code for the Construction and Equipment of Ships 
Carrying Dangerous Chemicals in Bulk, Resolution MEPC 19(22), 1985.
    Independent, as applied to a cargo piping, venting, heating or 
cooling system means that the system is connected to no other system, 
and has no means available for connection to another system.
    Independent tank means a cargo tank that is permanently affixed to 
the vessel, that is self-supporting, that incorporates no part of the 
vessel's hull and that is not essential to the integrity of the hull.
    Intank cargo pump means a pump:
    (1) Located within the cargo tank it serves; and
    (2) Whose piping passes through only the top of the cargo tank.
    Integral tank means a cargo tank that also is part of or is formed 
in part by the vessel's hull structure so that the tank and the hull may 
be stressed by the same loads.
    IOPP Certificate means an International Oil Pollution Prevention 
Certificate required under 33 CFR 151.19.

[[Page 216]]

    L means the length of the vessel and is defined in Sec. 42.13-15(a) 
of this chapter.
    Liquid means each substance having a vapor pressure of 172 kPa or 
less at 37.8  deg.C.
    Marine Inspector is defined in Sec. 30.10-43 of this chapter.
    MARPOL 73/78 means the International Convention for Prevention of 
Pollution from Ships, 1973 (done at London, November 2, 1973), modified 
by the Protocol of 1978 relating to the International Convention for 
Prevention of Pollution from Ships, 1973 (done at London, on February 
17, 1978).
    Master means the person-in-charge of a self-propelled or non-self-
propelled ship.
    Mixture means a mixture containing only the substances described in 
conjunction with the term.
    Nearest land has the same meaning as in 33 CFR 151.05(h).
    Noxious liquid substance (NLS) means--
    (1) Each substance listed in 33 CFR 151.47 or 33 CFR 151.49;
    (2) Each substance having an ``A,'' ``B,'' ``C,'' or ``D'' beside 
its name in the column headed ``Pollution Category'' in Table 1; and
    (3) Each substance that is identified as an NLS in a written 
permission issued under Sec. 153.900(c).
    NLS Certificate means an International Pollution Prevention 
Certificate for the Carriage of Noxious Liquid Substances in Bulk issued 
under Annex II of MARPOL 73/78.
    Oceangoing ship has the same meaning as in 33 CFR 151.05(j).
    Officer in Charge, Marine Inspection, is defined in Sec. 1.05(b) of 
this chapter.
    Open gauging means an arrangement for gauging the amount of cargo in 
a tank through a large opening, such as a tank hatch or ullage opening.
    Open venting system means a venting system that always allows vapor 
to flow freely to and from the tank.
    Phosphoric acid means phosphoric acid, superphosphoric acid, and 
aqueous solutions of phosphoric acid.
    Pressure-vacuum (PV) valve means a valve that is normally closed and 
which opens under a preset positive pressure or a vacuum.
    Prewash means a tank washing operation that meets the procedure in 
Sec. 153.1120.
    Pumproom means any enclosed space containing a pump that is part of 
a cargo containment system.
    Reception facility means anything capable of receiving NLS residues 
in a country whose Administration is not signatory to MARPOL 73/78 and 
each adequate reception facility.
    Refrigerated tank means a cargo tank that is equipped to carry a 
cargo that must be cooled in order to keep the cargo's vapor pressure 
from exceeding the tank's pressure-vacuum or safety relief valve setting 
under ambient conditions of 32  deg.C (approx. 90  deg.F) still water 
and 46  deg.C (approx. 115  deg.F) still air.
    Relief valve setting means the inlet line pressure at which a vent 
system's pressure-vacuum or safety relief valve fully opens.
    Residues and mixtures containing NLSs (NLS residue) means--
    (1) Any Category A, B, C, or D NLS cargo retained on the ship 
because it fails to meet consignee specifications;
    (2) Any part of a Category A, B, C, or D NLS cargo remaining on the 
ship after NLS is discharged to the consignee, including but not limited 
to puddles on the tank bottom and in sumps, clingage in the tanks, and 
substance remaining in the pipes; or
    (3) Any material contaminated with a Category A, B, C, or D NLS 
cargo, including but not limited to bilge slops, ballast, hose drip pan 
contents, and tank wash water.
    Restricted gauging system means a method of gauging the amount of 
cargo in a tank through an opening of limited size that restricts or 
prevents the release of cargo vapors from the tank vapor space.
    Safety relief (SR) valve means a normally closed valve that opens 
under a preset positive pressure.
    Separate and separated, as applied to a cargo piping, venting, 
heating or cooling system, means either an independent system or one 
that may be disconnected from all other systems by:
    (a) Removing spool pieces or valves and blanking the open pipe ends; 
or
    (b) Blocking each system interconnection with two blind flanges in

[[Page 217]]

series and providing a means of detecting leakage into the pipe section 
between the flanges.
    Service spaces means spaces outside the cargo area used for galleys, 
pantries containing cooking appliances, lockers, store rooms, workshops 
other than those forming part of machinery spaces, and trunks to such 
spaces.
    Ship means a vessel of any type whatsoever, including hydrofoils, 
air-cushion vehicles, submersibles, floating craft whether self-
propelled or not, and fixed or floating platforms.
    Slop tanks include slop tanks and cargo tanks used as slop tanks.
    Solidifying NLS means a Category A, B, or C NLS that has a melting 
point--
    (1) Greater than 0  deg.C but less than 15  deg.C and a temperature, 
measured under the procedure in Sec. 153.908(d), that is less than 5 
deg.C above its melting point at the time it is unloaded; or
    (2) 15  deg.C or greater and has a temperature, measured under the 
procedure in Sec. 153.908(d), that is less than 10  deg.C above its 
melting point at the time it is unloaded.
    Solution means a water solution.
    Special area means the Baltic Sea Area as defined in 33 CFR 
151.13(a)(2) and the Black Sea Area as defined in 33 CFR 151.13(a)(3).
    SR venting system means a venting system in which an SR valve 
controls vapor flow from the cargo tank.
    Tankship has the same meaning as ``ship''.
    Venting system means a permanent piping arrangement leading from a 
cargo tank and used to control the flow of vapor to and from the tank.

[CGD 73-96, 42 FR 49027, Sept. 26, 1977]

    Editorial Note: For Federal Register citations affecting Sec. 153.2, 
see the List of CFR Sections Affected, which appears in the Finding Aids 
section of the printed volume and at www.fdsys.gov.



Sec. 153.3  Right of appeal.

    Any person directly affected by a decision or action taken under 
this part, by or on behalf of the Coast Guard, may appeal therefrom in 
accordance with subpart 1.03 of this chapter.

[CGD 88-033, 54 FR 50381, Dec. 6, 1989]



Sec. 153.4  Incorporation by reference.

    (a) Certain material is incorporated by reference into this part 
with the approval of the Director of the Federal Register in accordance 
with 5 U.S.C. 552(a). To enforce any edition other than that specified 
in paragraph (b) of this section, the Coast Guard must publish notice of 
change in the Federal Register and make the material available to the 
public. All approved material is on file at Coast Guard Headquarters. 
Contact Commandant (CG-ENG), Attn: Office of Design and Engineering 
Systems, U.S. Coast Guard Stop 7509, 2703 Martin Luther King Jr. Avenue 
SE., Washington, DC 20593-7509; or contact the National Archives and 
Records Administration (NARA). For information on the availability of 
this material at NARA, call 202-741-6030, or go to: http://
www.archives.gov/federal_register/code_of_federal_regulations/
ibr_locations.html. All material is available from the sources indicated 
in paragraph (b) of this section.
    (b) American National Standards Institute (ANSI), 25 West 43rd 
Street, 4th Floor, New York, NY 10036, http://www.ansi.org.
    (1) ANSI B16.5, Pipe Flanges and Flanged Fittings, 1988, 
incorporation by reference approved for Sec. 153.940.
    (2) ANSI B16.24, Bronze Pipe Flanges and Flanged Fittings, 1979, 
incorporation by reference approved for Sec. 153.940.
    (3) ANSI B16.31, Non-Ferrous Flanges, 1971, incorporation by 
reference approved for Sec. 153.940.
    (c) American Society for Testing and Materials (ASTM), 100 Barr 
Harbor Drive, West Conshohocken, PA 19428-2959, 877-909-2786, http://
www.astm.org.
    (1) ASTM F 1122-87 (1992), Standard Specification for Quick 
Disconnect Couplings, incorporation by reference approved for 
Sec. 153.940.
    (2) ASTM F1271-90 (Reapproved 2012), Standard Specification for 
Spill Valves

[[Page 218]]

for Use in Marine Tank Liquid Overpressure Protections Applications 
(approved May 1, 2012), incorporation by reference approved for 
Sec. 153.365.

[CGD 88-032, 56 FR 35826, July 29, 1991, as amended by CGD 96-041, 61 FR 
50732, Sept. 27, 1996; CGD 97-057, 62 FR 51048, Sept. 30, 1997; USCG-
1999-5151, 64 FR 67183, Dec. 1, 1999; 69 FR 18803, Apr. 9, 2004; USCG-
2012-0832, 77 FR 59784, Oct. 1, 2012; USCG-2012-0866, 78 FR 13251, Feb. 
27, 2013; USCG-2013-0671, 78 FR 60155, Sept. 30, 2013]



Sec. 153.7  Ships built before December 27, 1977 and non-self-propelled
ships built before July 1, 1983: Application.

    (a) Definitions. (1) Permit means a Certificate of Inspection, 
Letter of Compliance, or Certificate of Compliance.
    (2) Existing tankship means a tankship for which a contract was let 
on or before December 27, 1977.
    (3) Letter of Compliance in this section means a letter issued by 
the Coast Guard before 27 December 1977 which permitted a foreign flag 
tankship to carry a bulk cargo regulated under this part.
    (b) Endorsements for existing tankships. (1) The Coast Guard 
endorses the permit of an existing tankship to carry a cargo listed in 
Table 1 if:
    (i) The tankship held a permit on December 27, 1977, endorsed for 
the cargo in question;
    (ii) The tankship meets the construction standards under which the 
Coast Guard issued the permit; and
    (iii) The tankship meets the standards in paragraph (c) of this 
section.
    (2) The Coast Guard endorses the permit of an existing tankship to 
carry a cargo listed in Table 1 if:
    (i) The tankship held a permit on December 27, 1977;
    (ii) The Coast Guard did not require the permit to be endorsed with 
the name of the cargo at any time before December 27, 1977;
    (iii) The tankship meets the construction standards under which the 
Coast Guard issued the permit;
    (iv) The tankship carried the cargo in question; and
    (v) The tankship meets the standards in paragraph (c) of this 
section.
    (3) The Coast Guard endorses the permit of an existing tankship to 
carry a cargo listed in Table 1 if:
    (i) The tankship held a permit on December 27, 1977 endorsed to 
carry class B or C poisons under 46 CFR part 39;
    (ii) The cargo in question is a class B or C poison;
    (iii) The tankship meets the construction standards in 46 CFR part 
39; and
    (iv) The tankship meets the standards in paragraph (c) of this 
section.
    (4) The Commandant (CG-ENG) considers on a case by case basis 
endorsing the permit of an existing tankship to carry a cargo listed in 
Table 1 if:
    (i) The tankship does not come within the categories described in 
paragraphs (b) (1) through (3) of this section;
    (ii) The tankship meets paragraph (c) of this section; and
    (iii) The tankship meets any additional requirements the Commandant 
(CG-ENG) may prescribe.
    (c) An existing tankship must meet all the requirements of this part 
except as provided in paragraphs (c) (3), (4), (5) and (6) of this 
section.
    (1)-(2) [Reserved]
    (3) The Commandant (CG-ENG) considers on a case by case basis 
endorsing as a type II containment system one that fails to meet 
Secs. 153.231(b), 153.234, 172.130 and 172.133 of this chapter if the 
tankship and containment system meet the following minimum conditions:
    (i) The tankship has a loadline certificate.
    (ii) The cargo tank is not part of the tankship's shell plating.
    (iii) The distance between the bottom plating of the cargo tank and 
the bottom shell plating of the tankship is at least 76 cm measured 
parallel to the vertical axis of the tankship.
    (4) The Commandant (CG-ENG) considers on a case by case basis 
endorsing a containment system as a type II containment system if:
    (i) The containment system is modified to meet Sec. 153.231(b) by 
adding double bottoms or wing tanks; and
    (ii) The tankship can survive the damage described in Secs. 172.135 
and 172.150 of this chapter to those parts of the tankship other than 
machinery spaces.
    (5) The Commandant (CG-ENG) considers on a case by case basis 
endorsing

[[Page 219]]

as a type III containment system one that does not meet Secs. 153.234, 
172.130 and 172.133 of this chapter if the tankship has a load line 
certificate.
    (6) The Commandant (CG-ENG) considers on a case by case basis 
endorsing the tankship to carry cargoes listed in Table 1 of this part 
if the tankship does not meet Secs. 153.217, 153.219 and 153.254.
    (d) Except as required by this paragraph, subpart B of this part 
does not apply to a non-self-propelled ship that carries an NLS cargo 
under this part if--
    (1) The ship was built before July 1, 1983;
    (2) The ship carries no NLS cargo or NLS residue at any time it is 
in waters of another Administration signatory to MARPOL 73/78;
    (3) The NLS does not require a type I containment system;
    (4) The ship meets all requirements in parts 30 through 34 and part 
151 of this chapter that apply to the cargo;
    (5) The ship meets the provisions in Sec. 153.216 and Secs. 153.470 
through 153.491 applying to the NLS category of that cargo;
    (6) When the ``Special Requirements'' column of Table 1 contains an 
entry for Sec. 153.408 or Sec. 153.409 beside the cargo name, the ship 
meets the section, except the system prescribed by the section need be 
capable of operation only during loading;
    (7) [Reserved]
    (8) No part of the ship's hull plating is a component of a cargo 
tank if the cargo tank is endorsed to carry a cargo having a type II 
containment system in Table 1.

[CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 
21204, May 17, 1982; CGD 82-063b, 48 FR 4781, Feb. 3, 1983; CGD 79-023, 
48 FR 51009, Nov. 4, 1983; CGD 81-052, 50 FR 8733, Mar. 5, 1985; CGD 81-
101, 52 FR 7779, Mar. 12, 1987; CGD 81-101, 53 FR 28974, Aug. 1, 1988 
and 54 FR 12629, Mar. 28, 1989; CGD 95-072, 60 FR 54106, Oct. 19, 1995]



Sec. 153.8  Procedures for requesting an endorsed Certificate of
Inspection.

    (a) When applying for the endorsed Certificate of Inspection that 
Sec. 153.900 requires for a ship to carry a cargo listed in Table 1, the 
applicant must proceed as follows:
    (1) Send a letter to one of the Coast Guard offices listed in 
Sec. 91.55-15 of this chapter that includes--
    (i) A request for the endorsed Certificate of Inspection;
    (ii) The name of the ship; and
    (iii) A list of the cargoes from Table 1 the applicant wishes the 
endorsement to allow.
    (2) Supply to the Coast Guard when requested--
    (i) Hull type calculations;
    (ii) The plans and information listed in Secs. 54.01-18, 56.01-10, 
91.55-5 (a), (b), (d), (g), and (h), and 110.25-1 of this chapter;
    (iii) A copy of the Procedures and Arrangements Manual required by 
Sec. 153.490; and
    (iv) Any other ship information, including plans, design 
calculations, test results, certificates, and manufacturer's data, that 
the Coast Guard needs to determine if the ship meets this part.
    (b) The Coast Guard notifies the applicant in writing--
    (1) Whether any further information is necessary to evaluate the 
request for the endorsed Certificate of Inspection; and
    (2) Of the outcome of the request for the endorsed Certificate of 
Inspection.
    (c) The Coast Guard returns the Procedures and Arrangements Manual 
stamped ``Approved'' or indicating what corrections are necessary.

    Note: The procedures for requesting an IOPP Certificate are found in 
33 CFR Part 151.

[CGD 81-101, 52 FR 7779, Mar. 12, 1987]



Sec. 153.9  Foreign flag vessel endorsement application.

    (a) Application for a vessel whose flag administration is signatory 
to MARPOL 73/78 and issues IMO Certificates. A person who desires a 
Certificate of Compliance endorsed to carry a cargo in table 1 of this 
part, as described in Sec. 153.900 of this part, must request the 
endorsement from the cognizant Officer in Charge, Marine Inspection and 
have aboard the vessel copies of IMO Certificates issued by the vessel's 
administration and--
    (1) An additional classification society statement that the vessel 
complies with Sec. 153.530 (b), (d), and (p)(1) if a person desires a 
Certificate of Compliance

[[Page 220]]

endorsed with the name of an alkylene oxide; and
    (2) An additional classification society statement that the vessel 
complies with Secs. 153.370, 153.371, and 153.438 if a person desires a 
Certificate of Compliance endorsed with the name of a cargo whose vapor 
pressure exceeds 100 kPa absolute at 37.8  deg.C (approximately 14.7 
psia at 100  deg.F).
    (b) Application for a vessel whose flag administration does not 
issue IMO Certificates. A person who desires a Certificate of Compliance 
endorsed with the name of a cargo in Table 1 of this part, as described 
in Sec. 153.900, must submit an application, in a written or electronic 
format, to Commanding Officer (MSC), Attn: Marine Safety Center, U.S. 
Coast Guard Stop 7430, 2703 Martin Luther King Jr. Avenue SE., 
Washington, DC 20593-7430, that includes the following information:
    (1) A copy of the vessel's Cargo Ship Safety Construction 
Certificate and Cargo Ship Safety Equipment Certificate issued under the 
International Convention for Safety of Life at Sea, 1974.
    (2) A list of those cargoes for which the Letter of Compliance is to 
be endorsed.
    (3) The specific tanks that are to be endorsed for each cargo.
    (4) The names of the U.S. ports in which the person anticipates 
operating the vessel.
    (5) The name of the vessel's flag administration.
    (6) The name of the society that classes the vessel.
    (7) A brief description of the vessel's cargo containment systems.
    (8) Hull type calculations.
    (9) The plans and information listed in Secs. 54.01-18, 56.01-10, 
91.55-5 (a), (b), (d), (g), and (h), and 111.05-5(d) of this chapter.
    (c) Conditions applying to all Certificate of Compliance 
applications. (1) If requested by the Commanding Officer, U.S. Coast 
Guard Marine Safety Center, a person desiring a Certificate of 
Compliance for a vessel must furnish any other vessel information such 
as plans, design calculations, test results, certificates, and 
manufacturer's data, that the Coast Guard needs to determine that the 
vessel meets the standards of this part.
    (2) Correspondence with the Coast Guard and vessel information 
submitted under this part must be in English except IMO Certificates 
which may be in French.

[CGD 73-96, 42 FR 49027, Sept. 26, 1977]

    Editorial Note: For Federal Register citations affecting Sec. 153.9, 
see the List of CFR Sections Affected, which appears in the Finding Aids 
section of the printed volume and at www.fdsys.gov.



Sec. 153.10  Procedures for requesting alternatives and waivers;
termination of waivers.

    (a) The Coast Guard considers allowing the use of an alternative in 
place of a requirement in this part if--
    (1) The person wishing to use the alternative sends a written 
application to the Commandant (CG-ENG) explaining--
    (i) The requirement in this part that would not be met and the 
reason why;
    (ii) The alternative the person proposes to be substituted; and
    (iii) How the alternative would ensure a level of safety and 
pollution protection at least equal to that of the requirement for which 
the alternative would substitute;
    (2) The alternative does not substitute an operational standard for 
a design or equipment standard; and
    (3) The Commandant (CG-ENG) determines that the alternative provides 
a level of protection for purposes of safety and pollution at least 
equal to the requirement in this part.
    (b) The Coast Guard considers granting a waiver of a requirement for 
which this part allows a waiver if the person wishing the waiver sends a 
written application to the Commandant (CG-ENG) that includes--
    (1) A citation of the regulation that allows the waiver; and
    (2) Any information and pledges that the regulation requires to be 
submitted with the application for the waiver.
    (c) The Commandant notifies the applicant in writing--
    (1) Whether any further information is necessary to evaluate the 
request for an alternative or waiver; and
    (2) Of the outcome of the request for an alternative or waiver.

[[Page 221]]

    (d) A waiver issued under this part terminates if any--
    (1) Information required to be supplied with the application for the 
waiver changes;
    (2) Pledges required to be supplied with the application for the 
waiver are repudiated;
    (3) Restrictions or procedures applying to operations under the 
waiver are violated; or
    (4) Requirements in the section of this part authorizing the waiver 
are violated.

[CGD 81-101, 52 FR 7780, Mar. 12, 1987]



Sec. 153.12  IMO Certificates for United States Ships.

    Either a classification society authorized under 46 CFR part 8, or 
the Officer in Charge, Marine Inspection, issues a United States ship an 
IMO Certificate endorsed to allow the carriage of a hazardous material 
or NLS cargo in table 1 of this part if the following requirements are 
met:
    (a) The ship's owner must make a request to the OCMI for the IMO 
Certificate.
    (b) The ship must meet this part.
    (c) Self-propelled ships contracted for after November 1, 1973 but 
built before December 28, 1977 must meet requirements in this part that 
apply to a self-propelled ship built on December 28, 1977.
    (d) Non-self-propelled ships contracted for after November 1, 1973 
but built before July 1, 1983 must meet the requirements in this part 
applying to non-self-propelled ships built on July 1, 1983.

[CGD 81-101, 52 FR 7780, Mar. 12, 1987, as amended by CGD 95-010, 62 FR 
67537, Dec. 24, 1997]



Sec. 153.15  Conditions under which the Coast Guard issues a Certificate 
of Inspection or Certificate of Compliance.

    (a) The Coast Guard issues the endorsed Certificate of Inspection 
required under Sec. 153.900 for a United States ship to carry a 
hazardous material or NLS listed in Table 1 if--
    (1) The person wishing the Certificate of Inspection applies 
following the procedures under Sec. 153.8; and
    (2) The ship meets the design and equipment requirements of this 
part and--
    (i) Subchapter D of this chapter if the hazardous material or NLS is 
flammable or combustible; or
    (ii) Either Subchapter D or I of this chapter, at the option of the 
ship owner, if the hazardous material or NLS is non-flammable or non-
combustible.
    (b) The Coast Guard issues the endorsed Certificate of Compliance 
required under Sec. 153.900 for a foreign ship to carry a hazardous 
material or NLS listed in Table 1 if--
    (1) The person wishing the Certificate of Compliance follows the 
procedures under Sec. 153.9;
    (2) The ship has an IMO Certificate issued by its Administration and 
endorsed with the name of the hazardous material or NLS if the ship's 
Administration is signatory to MARPOL 73/78;
    (3) The ship meets the requirements of this part applying to United 
States ships and Sec. 30.01-5(e) of this chapter if the ship's 
Administration is not signatory to MARPOL 73/78; and
    (4) The ship meets any additional design and equipment requirements 
specified by the Commandant (CG-ENG).

[CGD 81-101, 52 FR 7780, Mar. 12, 1987]



Sec. 153.16  Requirements for foreign flag vessel permits.

    To have its Certificate of Compliance endorsed to carry a cargo 
listed in Table 1, a foreign flag vessel must:
    (a) Have an IMO Certificate, if the flag administration issues IMO 
Certificates, endorsed with the name of the cargo and meet any specific 
requirements in this subpart that the Commandant (CG-ENG) may prescribe; 
or
    (b) Meet the requirements of this subpart and Sec. 30.01-5(e) of 
this chapter.

[CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 82-063b, 48 
FR 4781, Feb. 3, 1983; CGD 81-052, 50 FR 8733, Mar. 5, 1985; CGD 81-101, 
52 FR 7780, Mar. 12, 1987; CGD 95-027, 61 FR 26008, May 23, 1996]



Sec. 153.30  Special area endorsement.

    The Coast Guard endorses the Certificate of Inspection of a United 
States ship allowing it to operate in special areas if the ship owner--

[[Page 222]]

    (a) Requests the endorsement following the procedures in Sec. 153.8;
    (b) Shows that the ship meets the design and equipment requirements 
applying to ships operating in special areas contained in Regulations 5, 
5A, and 8 of Annex II and the Standards for Procedures and Arrangements.

[CGD 81-101, 52 FR 7780, Mar. 12, 1987]



Sec. 153.40  Determination of materials that are hazardous.

    Under the authority delegated by the Secretary of Transportation in 
49 CFR 1.46(t) to carry out the functions under 49 U.S.C. 1803, the 
Coast Guard has found the following materials to be hazardous when 
transported in bulk:
    (a) Materials listed in Table 30.25-1 of this chapter.
    (b) Materials listed in Table 151.05.
    (c) Materials listed in Table 1. \1\
---------------------------------------------------------------------------

    \1\ Those hazardous material cargoes designated Category A, B, C, or 
D in Table 1 are also Noxious Liquid Substances under Annex II and the 
Act to Prevent Pollution from Ships, 33 U.S.C. 1901 et seq.
---------------------------------------------------------------------------

    (d) Materials listed in Table 4 of Part 154.
    (e) Materials that are NLSs under MARPOL Annex II.
    (f) Liquids, liquefied gases, and compressed gases, that are--
    (1) Listed in 49 CFR 172.101;
    (2) Listed in 49 CFR 172.102; or
    (3) Listed or within any of the definitions in subparts C through O 
of 49 CFR part 173.
    (g) Those liquid, liquefied gas, and compressed gas materials 
designated as hazardous in the permissions granted under 
Sec. 153.900(c). \2\
---------------------------------------------------------------------------

    \2\ The Coast Guard continues to propose in the Federal Register any 
addition of these designated hazardous materials to one of the tables 
referred to in paragraphs (a) through (d).

[CGD 81-101, 52 FR 7780, Mar. 12, 1987]



                     Subpart B_Design and Equipment

                       General Vessel Requirements



Sec. 153.190  Stability requirements.

    Each vessel must meet the applicable requirements in Subchapter S of 
this chapter.

[CGD 79-023, 48 FR 51009, Nov. 4, 1983. Redesignated by CGD 81-101, 52 
FR 7780, Mar. 12, 1987]



Sec. 153.201  Openings to accommodation, service or control spaces.

    (a) Except as allowed in paragraph (b) of this section, entrances, 
ventilation intakes and exhausts, and other openings to accommodation, 
service, or control spaces must be located aft of the house bulkhead 
facing the cargo area a distance at least equal to the following:
    (1) 3 m (approx. 10 ft) if the vessel length is less than 75 meters 
(approx. 246 ft).
    (2) L/25 if the vessel length is between 75 and 125 meters (approx. 
246 ft and 410 ft).
    (3) 5 m (approx. 16.5 ft) if the vessel length is more than 125 
meters (approx. 410 ft).
    (b) Fixed port lights, wheelhouse doors, and windows need not meet 
the location requirements specified in paragraph (a) of this section if 
they do not leak when tested with a fire hose at 207 kPa gauge (30 
psig).

[CGD 81-078, 50 FR 21173, May 22, 1985]



Sec. 153.208  Ballast equipment.

    (a) Except for the arrangement described in paragraph (b) of this 
section no piping that serves a dedicated ballast tank that is adjacent 
to a cargo tank may enter an engine room or accommodation space.
    (b) Piping used only to fill a dedicated ballast tank adjacent to a 
cargo tank may enter an engine room or accommodation space if the piping 
has a valve or valving arrangement:
    (1) Within the part of the tankship where a containment system may 
be located under Sec. 153.234;
    (2) That allows liquid to flow only towards that ballast tank (such 
as a check valve); and

[[Page 223]]

    (3) That enables a person to shut off the fill line from the 
weatherdeck (such as a stop valve).
    (c) Except as prescribed in paragraph (d) of this section, pumps, 
piping, vent lines, overflow tubes and sounding tubes serving dedicated 
ballast tanks must not be located within a cargo containment system.
    (d) Each vent line, overflow tube and sounding tube that serves a 
dedicated ballast tank and that is located within a cargo containment 
system must meet Sec. 32.60-10(e)(2) of this chapter.

[CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 
21207, May 17, 1982]



Sec. 153.209  Bilge pumping systems.

    Bilge pumping systems for cargo pumprooms, slop tanks, and void 
spaces separated from cargo tanks by only a single bulkhead must be 
entirely within the locations allowed containment systems in 
Sec. 153.234.



Sec. 153.214  Personnel emergency and safety equipment.

    Each self-propelled ship must have the following:
    (a) Two stretchers or wire baskets complete with equipment for 
lifting an injured person from a pumproom or a cargo tank.
    (b) In addition to any similar equipment required by Subchapter D of 
this chapter, three each of the following:
    (1) A 30 minute self-contained breathing apparatus of the pressure 
demand type, approved by the Mining Safety and Health Administration 
(formerly the Mining Enforcement and Safety Administration) and the 
National Institute for Occupational Safety and Health, or the tankship's 
flag administration with five refill tanks or cartridges of 30 minutes 
capacity each.
    (2) A set of overalls or large apron, boots, long sleeved gloves, 
and goggles, each made of materials resistant to the cargoes in Table 1 
that are endorsed on the Certificate of Inspection or Certificate of 
Compliance.
    (3) A steel-cored lifeline with harness.
    (4) An explosion-proof lamp.
    (c) First aid equipment.

[CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 77-222, 43 FR 
57256, Dec. 7, 1978; CGD 78-128, 47 FR 21207, May 17, 1982; CGD 81-052, 
50 FR 8733, Mar. 5, 1985; CGD 81-101, 52 FR 7781, Mar. 12, 1987]



Sec. 153.215  Safety equipment lockers.

    Each self-propelled ship must have the following:
    (a) Each tankship must have at least two safety equipment lockers.
    (b) One safety equipment locker must be adjacent to the emergency 
shutdown station required by Sec. 153.296(b). This locker must contain 
one set of the equipment required by Sec. 153.214(a) and two sets of 
that required by Sec. 153.214(b).
    (c) The second safety equipment locker must be adjacent to the 
second emergency shutdown station required by Sec. 153.296. This locker 
must contain the remaining equipment required by Sec. 153.214 (a) and 
(b).
    (d) Each safety equipment locker must be marked as described in 
Sec. 153.955 (c), (d), and (e) with the legend ``SAFETY EQUIPMENT.''

[CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 
21207, May 17, 1982; CGD 81-101, 52 FR 7781, Mar. 12, 1987]



Sec. 153.216  Shower and eyewash fountains.

    (a) Each non-self-propelled ship must have a fixed or portable 
shower and eyewash fountain that operates during cargo transfer and 
meets paragraph (c) of this section.
    (b) Each self-propelled ship must have a shower and eyewash fountain 
that operates at all times and meets paragraph (c) of this section.
    (c) The shower and eyewash fountains required by paragraphs (a) and 
(b) of this section must--
    (1) Operate in any ambient temperature;
    (2) Dispense water at a temperature between 0  deg.C and 40  deg.C 
(approx. 32  deg.F and 104  deg.F);
    (3) Be located on the weatherdeck; and
    (4) Be marked ``EMERGENCY SHOWER'' as described in Sec. 153.955 (c), 
(d), and (e), so that the marking is visible from work areas in the part 
of the deck

[[Page 224]]

where the cargo containment systems are located.

[CGD 81-101, 52 FR 7781, Mar. 12, 1987]



Sec. 153.217  Access to enclosed spaces and dedicated ballast tanks.

    An access opening to an enclosed space or a dedicated ballast tank 
must meet the requirements for a cargo tank access in Sec. 153.254 (b), 
(c), and (d) if:
    (a) The enclosed space or dedicated ballast tank is located within 
the cargo area of the vessel; or
    (b) A part of a cargo containment system lies within the enclosed 
space or dedicated ballast tank.

[CGD 78-128, 47 FR 21207, May 17, 1982]



Sec. 153.219  Access to double bottom tanks serving as dedicated 
ballast tanks.

    (a) Except as prescribed in paragraph (b) of this section, access 
openings to double bottom tanks serving as dedicated ballast tanks must 
not be located within a cargo containment system.
    (b) Each access opening to a double bottom tank that is a dedicated 
ballast tank and that is located within a cargo containment system must 
be:
    (1) Enclosed in an access trunk extending to the weatherdeck;
    (2) Separated from the cargo containment system by two manhole 
coverings; or
    (3) Approved by the Commandant (CG-ENG).

[CGD 78-128, 47 FR 21207, May 17, 1982, as amended by CGD 82-063b, 48 FR 
4782, Feb. 3, 1983]

                        Cargo Containment Systems



Sec. 153.230  Type I system.

    A type I containment system must meet the following requirements:
    (a) The vessel must meet the requirements in subpart F of part 172 
of this chapter for a type I hull.
    (b) Except as described in Sec. 153.235:
    (1) It may be no closer to the tankship's shell than 76 cm (approx. 
29.9 in.); and
    (2) It may not be located in any part of the tankship subject to the 
damage described in Table 172.135 of this chapter for:
    (i) Collision Penetration, Transverse extent; and
    (ii) Grounding Penetration, Vertical extents from the baseline 
upward.

[CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 79-023, 48 FR 
51009, Nov. 4, 1983]



Sec. 153.231  Type II system.

    A type II containment system must meet the following requirements:
    (a) The vessel must meet the requirements in subpart F of part 172 
of this chapter for a type I or II hull.
    (b) Except as allowed in Secs. 153.7 and 153.235--
    (1) It may be no closer to the tankship's shell than 76 cm (approx. 
29.9 in.); and
    (2) It may not be located in any part of the tankship subject to the 
damage described in Table 172.135 of this chapter for Grounding 
Penetration, Vertical extent from the baseline upward.

[CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 79-023, 48 FR 
51009, Nov. 4, 1983; CGD 81-101, 52 FR 7781, Mar. 12, 1987]



Sec. 153.232  Type III system.

    A type III containment system must be in either a type I, II, or III 
hull. The requirements for type I, II, and III hulls are in subpart F of 
part 172 of this chapter.

[CGD 79-023, 48 FR 51009, Nov. 4, 1983]



Sec. 153.233  Separation of tanks from machinery, service and other spaces.

    (a) To prevent leakage through a single weld failure, the following 
spaces must be separated from a cargo by two walls, two bulkheads, or a 
bulkhead and a deck not meeting in a cruciform joint:
    (1) Machinery spaces.
    (2) Service spaces.
    (3) Accommodation spaces.
    (4) Spaces for storing potable domestic, or feed water.
    (5) Spaces for storing edibles.
    (b) Some examples of arrangements that may separate cargo from the 
spaces listed in paragraph (a) of this section are the following:
    (1) Dedicated ballast tanks.
    (2) Cargo pumprooms.

[[Page 225]]

    (3) Ballast pumprooms.
    (4) Tanks not carrying a cargo listed in this part. \3\
---------------------------------------------------------------------------

    \3\ See also Secs. 32.56-5 and 32.60-10 of this chapter for 
limitations on the stowage of combustible liquids adjacent to ignition 
sources.
---------------------------------------------------------------------------

    (5) A cofferdam aft of the cargo containment systems and whose 
forward bulkhead is forward of any joint common to an accommodations 
space and the deck.
    (6) Double walled piping or a piping tunnel.



Sec. 153.234  Fore and aft location.

    Except as allowed in Sec. 153.7, each ship must meet the following:
    (a) Each cargo containment system and any compartments within which 
a containment system is located must be forward of a tankship's 
accommodation spaces.
    (b) Except as described in Sec. 153.235, each cargo containment 
system must be located at least 0.05L aft of the forward perpendicular, 
but in no case forward of a collision bulkhead.

[CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 81-101, 52 FR 
7781, Mar. 12, 1987]



Sec. 153.235  Exceptions to cargo piping location restrictions.

    Cargo piping must not be located in those areas from which a 
containment system is excluded by Secs. 153.230(b), 153.231(b), and 
153.234(b) unless the cargo piping:
    (a) Drains back to the cargo tank under any heel or trim resulting 
from the damage specified in Sec. 172.135 of this chapter; and
    (b) Enters the cargo tank above the liquid level for a full tank in 
any condition of heel or trim resulting from the damage specified in 
Sec. 172.135 of this chapter.

[CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 79-023, 48 FR 
51009, Nov. 4, 1983]



Sec. 153.236  Prohibited materials.

    When one of the following paragraphs of this section is referenced 
in Table 1, the materials listed in that paragraph may not be used in 
components that contact the cargo liquid or vapor:
    (a) Aluminum or aluminum alloys.
    (b) Copper or copper alloys.
    (c) Zinc, galvanized steel or alloys having more than 10 percent 
zinc by weight.
    (d) Magnesium.
    (e) Lead.
    (f) Silver or silver alloys.
    (g) Mercury.



Sec. 153.238  Required materials.

    When one of the following paragraphs of this section is referenced 
in Table 1, only those materials listed in that paragraph may be used in 
components that contact the cargo liquid or vapor:
    (a) Aluminum, stainless steel, or steel covered with a protective 
lining or coating.
    (b) With cargo concentrations of 98 percent or greater, aluminum or 
stainless steel.
    (c) With cargo concentrations of less than 98 percent, 304L or 316 
stainless steel.
    (d) Solid austenitic stainless steel.
    (e) Stainless steel or steel covered with a suitable protective 
lining or coating. (See Sec. 153.266.)

[CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 88-100, 54 FR 
40041, Sept. 29, 1989]



Sec. 153.239  Use of cast iron.

    (a) Cast iron used in a cargo containment system must meet the 
requirements of Sec. 56.60-10(b) of this chapter.
    (b) For purposes of this section, the term ``lethal products'' in 
Sec. 56.60-10(b) means those cargoes that Table 1 references to 
Sec. 153.525 or Sec. 153.527.

[CGD 78-128, 47 FR 21207, May 17, 1982]



Sec. 153.240  Insulation.

    Cargo containment system insulation made necessary by the 
requirements of this part must meet the requirements in Sec. 38.05-20 of 
this chapter. However, the vapor barrier required by Sec. 38.05-20(b) is 
unnecessary if the insulation is:
    (a) Protected from the weather, and attached to a containment system 
maintained at a temperature in excess of 46  deg.C (approx. 115  deg.F); 
or

[[Page 226]]

    (b) In an atmosphere whose dew point is less than the temperature of 
any surface in contact with the insulation.

[CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by USCG-2014-0688, 
79 FR 58284, Sept. 29, 2014]

                               Cargo Tanks



Sec. 153.250  Double-bottom and deep tanks as cargo tanks.

    Except in those cases in which Commandant (CG-ENG) specifically 
approves another arrangement, such as a double-bottom or deep tank as a 
cargo tank, an integral cargo tank or the hold within which an 
independent cargo tank is located must extend to the weatherdeck.

[CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 82-063b, 48 
FR 4781, Feb. 3, 1983]



Sec. 153.251  Independent cargo tanks.

    All independent cargo tank must meet Sec. 38.05-10 (a)(1), (b), (d), 
and (e)(1) of this chapter.

[CGD 78-128, 47 FR 21208, May 17, 1982]



Sec. 153.252  Special requirement for an independent cargo tank.

    When Table 1 refers to this section, the cargo tank must be an 
independent tank that meets Secs. 38.05-2(d) and 38.05-4(g) of this 
chapter. (See also Sec. 153.256(b)).

[CGD 78-128, 47 FR 21208, May 17, 1982]



Sec. 153.254  Cargo tank access.

    (a) A cargo tank must have at least one covered manhole opening into 
the vapor space described in Sec. 153.354.
    (b) An access through a vertical cargo tank surface must be at least 
60 cm by 80 cm (approx. 23.6  x  31.5 in.) and no more than 60 cm above 
a foothold grating, or surface on both sides of the access way.
    (c) An access through a horizontal cargo tank surface must be at 
least 60 cm by 60 cm (approx. 23.6  x  23.6 in.).
    (d) An access trunk must be no less than 76 cm (approx. 29.9 in.) in 
diameter.



Sec. 153.256  Trunks, domes, and openings of cargo tanks.

    (a) The hatch of a cargo tank must:
    (1) Be at the highest point of the tank; and
    (2) Open on or above the weatherdeck.
    (b) To be endorsed to carry a cargo requiring an independent cargo 
tank, a tank must have:
    (1) A trunk or dome at the uppermost part of the tank, extending 
above the weatherdeck;
    (2) Its hatch at the top of the trunk or dome; and
    (3) No openings below the weatherdeck.



Sec. 153.266  Tank linings.

    A tank lining must be:
    (a) At least as elastic as the tank material; and
    (b) Applied or attached to the tank as recommended by the lining 
manufacturer.

               Piping Systems and Cargo Handling Equipment



Sec. 153.280  Piping system design.

    (a) Each cargo piping system must meet the standards of Part 56 and 
Secs. 38.10-1(b), 38.10-1(e), and 38.10-10(a) of this chapter.
    (b) Piping carrying cargo or cargo residue may not enter any 
machinery space except a cargo pumproom.



Sec. 153.281  Piping to independent tanks.

    Piping for an independent cargo tank must penetrate the tank only 
through that part of the tank or dome extending above the weatherdeck.

[CGD 78-128, 47 FR 21208, May 17, 1982]



Sec. 153.282  Cargo filling lines.

    The discharge point of a cargo tank filling line must be no higher 
above the bottom of the cargo tank or sump than 10 cm (approx. 4 in.) or 
the radius of the filling line, whichever is greater.



Sec. 153.283  Valving for cargo piping.

    (a) Except as described in this section, a cargo line must have a 
deck operable, manual stop valve:
    (1) In each tank which the line serves; and
    (2) At each cargo hose connection point.
    (b) The valve required by paragraph (a)(1) of this section may be in 
a cargo

[[Page 227]]

pumproom at the pumproom bulkhead if the cargo tank the cargo line 
serves is adjacent to the pumproom.
    (c) The valve required by paragraph (a)(1) of this section may be on 
the weatherdeck if:
    (1) The weatherdeck is the top of the tank;
    (2) The line goes through the weatherdeck into the tank; and
    (3) The valve is at the point where the line penetrates the 
weatherdeck.
    (d) The valve required by paragraph (a)(1) of this section may be 
outside the tank if:
    (1) The tank is an independent tank; and
    (2) The valve is at the point where the line penetrates the tank.
    (e) The discharge line of an intank cargo pump need not have the 
valve required by paragraph (a)(1) of this section.
    (f) If the cargo exerts a gravity head pressure on a valve required 
by this section, the valve must be a positive shutoff valve that meets 
Sec. 56.50-60(d) of this chapter.

[CGD 73-96, 42 FR 49027, Sept. 26, 1977, as amended by CGD 78-128, 47 FR 
21208, May 17, 1982]



Sec. 153.284  Characteristics of required quick closing valves.

    A remotely actuated quick closing shutoff valve required by 
Sec. 153.530(n) must:
    (a) Be a positive shutoff valve;
    (b) Be of the fail-closed type that closes on loss of power;
    (c) Be capable of local manual closing;
    (d) Close from the time of actuation in 30 seconds or less; and
    (e) Be equipped with a fusible element that melts at less than 104 
deg.C (approx. 220  deg.F) and closes the valve.

[CGD 78-128, 47 FR 21208, May 17, 1982; 47 FR 27293, June 24, 1982]



Sec. 153.285  Valving for cargo pump manifolds.

    (a) When cargo lines serving different tanks enter a pumproom and 
connect to the same pump:
    (1) Each cargo line must have a stop valve within the line;
    (2) The valve must be before the cargo line joins the other lines or 
pump; and
    (3) The valve must be within the pumproom.
    (b) The valve in paragraph (a) of this section is required in 
addition to any valve required under Sec. 153.283(b).



Sec. 153.292  Separation of piping systems.

    Cargo piping systems must be arranged so that operations necessary 
to provide separate systems can be accomplished in a cargo handling 
space or on the weatherdeck.

[CGD 78-128, 47 FR 21208, May 17, 1982]



Sec. 153.294  Marking of piping systems.

    (a) Each cargo piping system must be marked with the designation 
number of the cargo tank it serves at each hose connection, valve, and 
blind in the piping system. The markings must be in characters at least 
5 cm (approx. 2 in.) high.
    (b) Every hose connection of a cargo piping system must be marked 
with the cargo piping system's working pressure required by Sec. 38.10-
10(a) of this chapter. \4\
---------------------------------------------------------------------------

    \4\ See Sec. 153.280 of the part.
---------------------------------------------------------------------------



Sec. 153.296  Emergency shutdown stations.

    (a) Each tankship must have at least two emergency shutdown 
stations.
    (b) One emergency shutdown station must b