[Code of Federal Regulations]
[Title 40, Volume 8]
[Revised as of July 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR61.301]

[Page 182-183]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 61_NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS
--Table of Contents
 
Subpart BB_National Emission Standard for Benzene Emissions From Benzene 
                           Transfer Operations
 
Sec. 61.301  Definitions.

    As used in this subpart, all terms not defined herein shall have the 
meaning given them in the Act, or in subpart A or subpart V of part 61.
    Bulk terminal means any facility which receives liquid product 
containing benzene by pipelines, marine vessels, tank trucks, or 
railcars, and loads the product for further distribution into tank 
trucks, railcars, or marine vessels.
    Car-sealed means having a seal that is placed on the device used to 
change the position of a valve (e.g., from open to closed) such that the 
position of the valve cannot be changed without breaking the seal and 
requiring the replacement of the old seal, once broken, with a new seal.
    Control device means all equipment used for recovering or oxidizing 
benzene vapors displaced from the affected facility.
    Incinerator means any enclosed combustion device that is used for 
destroying organic compounds and that does not extract energy in the 
form of steam or process heat. These devices do not rely on the heating 
value of the waste gas to sustain efficient combustion. Auxiliary fuel 
is burned in the device and the heat from the fuel flame heats the waste 
gas to combustion temperature. Temperature is controlled by controlling 
combustion air or fuel.
    Leak means any instrument reading of 10,000 ppmv or greater using 
Method 21 of 40 CFR part 60, appendix A.
    Loading cycle means the time period from the beginning of filling a 
tank truck, railcar, or marine vessel until flow to the control device 
ceases, as measured by the flow indicator.
    Loading rack means the loading arms, pumps, meters, shutoff valves, 
relief valves, and other piping and valves necessary to fill tank 
trucks, railcars, or marine vessels.
    Marine vessel means any tank ship or tank barge which transports 
liquid product such as benzene.
    Nonvapor tight means any tank truck, railcar, or marine vessel that 
does not pass the required vapor-tightness test.
    Process heater means a device that transfers heat liberated by 
burning fuel to fluids contained in tubes, except water that is heated 
to produce steam.
    Steam generating unit means any enclosed combustion device that uses 
fuel energy in the form of steam.
    Vapor collection system means any equipment located at the affected 
facility used for containing benzene vapors displaced during the loading 
of tank trucks, railcars, or marine vessels. This does not include the 
vapor collection system that is part of any tank truck, railcar, or 
marine vessel vapor collection manifold system.
    Vapor-tight marine vessel means a marine vessel with a benzene 
product tank that has been demonstrated within the preceding 12 months 
to have no leaks. This demonstration shall be made using Method 21 of 
part 60, appendix A, during the last 20 percent of loading and during a 
period when the vessel is being loaded at its maximum loading rate. A 
reading of greater than 10,000 ppm as methane shall constitute a leak. 
As an alternative, a marine vessel owner or operator may use the vapor-
tightness test described in Sec. 61.304(f) to demonstrate vapor 
tightness. A marine vessel operated at negative pressure is assumed to 
be vapor-tight for the purpose of this standard.
    Vapor-tight tank truck or vapor-tight railcar means a tank truck or 
railcar for which it has been demonstrated within the preceding 12 
months that its product tank will sustain a pressure change of not more 
than 750 pascals within 5 minutes after it is pressurized to a minimum 
of 4,500 pascals. This capability is to be demonstrated using

[[Page 183]]

the pressure test procedure specified in Method 27 of appendix A to 40 
CFR part 60, and a pressure measurement device which has a precision of 
2.5 mm water and which is capable of measuring 
above the pressure at which the tank truck or railcar is to be tested 
for vapor tightness.

[55 FR 8341, Mar. 7, 1990, as amended at 65 FR 62159, Oct. 17, 2000]