| (26) Light liquid--Volatile organic compounds that
have a true vapor pressure greater than 0.044 pounds per square inch
absolute (0.3 kiloPascal) at 68 degrees Fahrenheit (20 degrees Celsius),
and are a liquid at operating conditions.
(27) Liquefied petroleum gas--Any material that is
composed predominantly of any of the following hydrocarbons or mixtures
of hydrocarbons: propane, propylene, normal butane, isobutane, and
butylenes.
(28) Low-density polyethylene--A thermoplastic polymer
or copolymer comprised of at least 50% ethylene by weight and having
a density of 0.940 grams per cubic centimeter or less.
(29) Marine loading facility--The loading arm(s), pumps,
meters, shutoff valves, relief valves, and other piping and valves
that are part of a single system used to fill a marine vessel at a
single geographic site. Loading equipment that is physically separate
(i.e., does not share common piping, valves, and other loading equipment)
is considered to be a separate marine loading facility.
(30) Marine loading operation--The transfer of oil,
gasoline, or other volatile organic liquids at any affected marine
terminal, beginning with the connections made to a marine vessel and
ending with the disconnection from the marine vessel.
(31) Marine terminal--Any marine facility or structure
constructed to transfer oil, gasoline, or other volatile organic liquid
bulk cargo to or from a marine vessel. A marine terminal may include
one or more marine loading facilities.
(32) Metal-to-metal seal--A connection formed by a
swage ring that exerts an elastic, radial preload on narrow sealing
lands, plastically deforming the pipe being connected, and maintaining
sealing pressure indefinitely.
(33) Natural gas/gasoline processing--A process that
extracts condensate from gases obtained from natural gas production
and/or fractionates natural gas liquids into component products, such
as ethane, propane, butane, and natural gasoline. The following facilities
shall be included in this definition if, and only if, located on the
same property as a natural gas/gasoline processing operation previously
defined: compressor stations, dehydration units, sweetening units,
field treatment, underground storage, liquefied natural gas units,
and field gas gathering systems.
(34) Petroleum refinery--Any facility engaged in producing
gasoline, kerosene, distillate fuel oils, residual fuel oils, lubricants,
or other products through distillation of crude oil, or through the
redistillation, cracking, extraction, reforming, or other processing
of unfinished petroleum derivatives.
(35) Polymer or resin manufacturing process--A process
that produces any of the following polymers or resins: polyethylene,
polypropylene, polystyrene, and styrenebutadiene latex.
(36) Pressure relief valve or pressure-vacuum relief
valve--A safety device used to prevent operating pressures from exceeding
the maximum and minimum allowable working pressure of the process
equipment. A pressure relief valve or pressure-vacuum relief valve
is automatically actuated by the static pressure upstream of the valve
but does not include:
(A) a rupture disk; or
(B) a conservation vent or other device on an atmospheric
storage tank that is actuated either by a vacuum or a pressure of
no more than 2.5 pounds per square inch gauge.
(37) Printing line--An operation consisting of a series
of one or more printing processes and including associated drying
areas.
(38) Process drain--Any opening (including a covered
or controlled opening) that is installed or used to receive or convey
wastewater into the wastewater system.
(39) Process unit--The smallest set of process equipment
that can operate independently and includes all operations necessary
to achieve its process objective.
(40) Rupture disk--A diaphragm held between flanges
for the purpose of isolating a volatile organic compound from the
atmosphere or from a downstream pressure relief valve.
(41) Shutdown or turnaround--For the purposes of this
chapter, a work practice or operational procedure that stops production
from a process unit or part of a unit during which time it is technically
feasible to clear process material from a process unit or part of
a unit consistent with safety constraints, and repairs can be accomplished.
(A) The term shutdown or turnaround does not include
a work practice that would stop production from a process unit or
part of a unit:
(i) for less than 24 hours; or
(ii) for a shorter period of time than would be required
to clear the process unit or part of the unit and start up the unit.
(B) Operation of a process unit or part of a unit in
recycle mode (i.e., process material is circulated, but production
does not occur) is not considered shutdown.
(42) Startup--For the purposes of this chapter, the
setting into operation of a piece of equipment or process unit for
the purpose of production or waste management.
(43) Strippable volatile organic compound (VOC)--Any
VOC in cooling tower heat exchange system water that is emitted to
the atmosphere when the water passes through the cooling tower.
(44) Synthetic organic chemical manufacturing process--A
process that produces, as intermediates or final products, one or
more of the chemicals listed in 40 Code of Federal Regulations §60.489
(October 17, 2000).
(45) Tank-truck tank--Any storage tank having a capacity
greater than 1,000 gallons, mounted on a tank-truck or trailer. Vacuum
trucks used exclusively for maintenance and spill response are not
considered to be tank-truck tanks.
(46) Transport vessel--Any land-based mode of transportation
(truck or rail) equipped with a storage tank having a capacity greater
than 1,000 gallons that is used to transport oil, gasoline, or other
volatile organic liquid bulk cargo. Vacuum trucks used exclusively
for maintenance and spill response are not considered to be transport
vessels.
(47) True partial pressure--The absolute aggregate
partial pressure of all volatile organic compounds in a gas stream.
(48) Vapor balance system--A system that provides for
containment of hydrocarbon vapors by returning displaced vapors from
the receiving vessel back to the originating vessel.
(49) Vapor control system or vapor recovery system--Any
control system that utilizes vapor collection equipment to route volatile
organic compounds (VOC) to a control device that reduces VOC emissions.
(50) Vapor-tight--Not capable of allowing the passage
of gases at the pressures encountered except where other acceptable
leak-tight conditions are prescribed in this chapter.
(51) Waxy, high pour point crude oil--A crude oil with
a pour point of 50 degrees Fahrenheit (10 degrees Celsius) or higher
as determined by the American Society for Testing and Materials Standard
D97-66, "Test for Pour Point of Petroleum Oils."
|
| Source Note: The provisions of this §115.10 adopted to be effective February 19, 1990, 15 TexReg 549; amended to be effective July 17, 1991, 16 TexReg 3708; amended to be effective November 1, 1991, 16 TexReg 5837; amended to be effective August 1, 1992, 1992, 17 TexReg 4683; amended to be effective November 16, 1992, 17 TexReg 7782; amended to be effective December 3, 1993, 18 TexReg 8538; amended to be effective May 27, 1994, 19 TexReg 3703; amended to be effective March 7, 1996, 21 TexReg 1548; amended to be effective May 22, 1997, 22 TexReg 4213; amended to be effective April 7, 1998, 23 TexReg 3503; amended to be effective July 21,1999, 24 TexReg 5488; amended to be effective July 21, 1999, 24 TexReg 5488; amended to be effective January 18, 2001, 26 TexReg 493; amended to be effective May 16, 2002, 27 TexReg 4113; amended to be effective January 17, 2003, 28 TexReg 113; amended to be effective November 13, 2003, 28 TexReg 9835; amended to be effective December 23, 2004, 29 TexReg 11623; amended to be effective May 5, 2005, 30 TexReg 2522; amended to be effective December 7, 2006, 31 TexReg 9840; amended to be effective October 2, 2014, 39 TexReg 7745; amended to be effective June 25, 2015, 40 TexReg 3907; amended to be effective March 26, 2020, 45 TexReg 2003 |
