[Title 40 CFR 60.271]
[Code of Federal Regulations (annual edition) - July 1, 2009 Edition]
[Title 40 - PROTECTION OF ENVIRONMENT]
[Chapter I - ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)]
[Subchapter C - AIR PROGRAMS (CONTINUED)]
[Part 60 - STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES--]
[Subpart Aa - Standards of Performance for Steel Plants: Electric Arc]
[Sec. 60.271 - Definitions.]
[From the U.S. Government Printing Office]


40PROTECTION OF ENVIRONMENT62009-07-012009-07-01false60.271Sec. 60.271PROTECTION OF ENVIRONMENTENVIRONMENTAL PROTECTION AGENCY (CONTINUED)AIR PROGRAMS (CONTINUED)STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES--Standards of Performance for Steel Plants: Electric Arc
Sec. 60.271  Definitions.

    As used in this subpart, all terms not defined herein shall have the 
meaning given them in the Act and in subpart A of this part.
    (a) Electric arc furnace (EAF) means a furnace that produces molten 
steel and heats the charge materials with electric arcs from carbon 
electrodes. Furnaces that continuously feed direct-reduced iron ore 
pellets as the primary source of iron are not affected facilities within 
the scope of this definition.
    (b) Dust-handling equipment means any equipment used to handle 
particulate matter collected by the control device and located at or 
near the control device for an EAF subject to this subpart.
    (c) Control device means the air pollution control equipment used to 
remove particulate matter generated by an EAF(s) from the effluent gas 
stream.
    (d) Capture system means the equipment (including ducts, hoods, 
fans, dampers, etc.) used to capture or transport particulate matter 
generated by an EAF to the air pollution control device.
    (e) Charge means the addition of iron and steel scrap or other 
materials into the top of an electric arc furnace.
    (f) Charging period means the time period commencing at the moment 
an EAF starts to open and ending either three minutes after the EAF roof 
is returned to its closed position or six minutes after commencement of 
opening of the roof, whichever is longer.
    (g) Tap means the pouring of molten steel from an EAF.
    (h) Tapping period means the time period commencing at the moment an 
EAF begins to pour molten steel and ending either three minutes after 
steel ceases to flow from an EAF, or six minutes after steel begins to 
flow, whichever is longer.
    (i) Meltdown and refining means that phase of the steel production 
cycle when charge material is melted and undesirable elements are 
removed from the metal.
    (j) Meltdown and refining period means the time period commencing at 
the termination of the initial charging period and ending at the 
initiation of the tapping period, excluding any intermediate charging 
periods and times when power to the EAF is off.
    (k) Shop opacity means the arithmetic average of 24 or more opacity 
observations of emissions from the shop taken in accordance with Method 
9 of appendix A of this part for the applicable time periods.
    (l) Heat time means the period commencing when scrap is charged to 
an empty EAF and terminating when the EAF tap is completed.
    (m) Shop means the building which houses one or more EAF's.
    (n) Direct shell evacuation system means any system that maintains a 
negative pressure within the EAF above the slag or metal and ducts these 
emissions to the control device.
    (o) Bag leak detection system means a system that is capable of 
continuously monitoring relative particulate matter (dust) loadings in 
the exhaust of a baghouse to detect bag leaks and other conditions that 
result in increases in particulate loadings. A bag leak detection system 
includes, but is not limited to, an instrument that operates on 
triboelectric, electrodynamic, light scattering, light transmittance, or 
other effect to continuously monitor relative particulate matter 
loadings.

[40 FR 43852, Sept. 23, 1975, as amended at 49 FR 43843, Oct. 31, 1984; 
64 FR 10109, Mar. 2, 1999; 70 FR 8530, Feb. 22, 2005]