[Title 40 CFR 60.61]
[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 F - Standards of Performance for Portland Cement Plants]
[Sec. 60.61 - Definitions.]
[From the U.S. Government Printing Office]


40PROTECTION OF ENVIRONMENT62009-07-012009-07-01false60.61Sec. 60.61PROTECTION OF ENVIRONMENTENVIRONMENTAL PROTECTION AGENCY (CONTINUED)AIR PROGRAMS (CONTINUED)STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES--Standards of Performance for Portland Cement Plants
Sec. 60.61  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) Portland cement plant means any facility manufacturing portland 
cement by either the wet or dry process.
    (b) Bypass means any system that prevents all or a portion of the 
kiln or clinker cooler exhaust gases from entering the main control 
device and

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ducts the gases through a separate control device. This does not include 
emergency systems designed to duct exhaust gases directly to the 
atmosphere in the event of a malfunction of any control device 
controlling kiln or clinker cooler emissions.
    (c) Bypass stack means the stack that vents exhaust gases to the 
atmosphere from the bypass control device.
    (d) Monovent means an exhaust configuration of a building or 
emission control device (e.g., positive-pressure fabric filter) that 
extends the length of the structure and has a width very small in 
relation to its length (i.e., length to width ratio is typically greater 
than 5:1). The exhaust may be an open vent with or without a roof, 
louvered vents, or a combination of such features.

[36 FR 24877, Dec. 23, 1971, as amended at 39 FR 20793, June 13, 1974; 
53 FR 50363, Dec. 14, 1988]