Texas Administrative Code › Title 30 - ENVIRONMENTAL QUALITY › Part 1 - TEXAS COMMISSION ON ENVIRONMENTAL QUALITY › Chapter 115 - CONTROL OF AIR POLLUTION FROM VOLATILE ORGANIC › Subchapter B - GENERAL VOLATILE ORGANIC COMPOUND SOURCES › Division 7 - OIL AND NATURAL GAS SERVICE IN OZONE NONATTAINMENT AREAS › Section 115.171 - Definitions

Current through Reg. 49, No. 28; July 12, 2024
Unless specifically defined in the Texas Clean Air Act
						(Texas Health and Safety Code, Chapter 382) or in §§
											3.2,
						101.1, or
						115.10 of
						this title (relating to Definitions, respectively), the terms in this division
						have the meanings commonly used in the field of air pollution control. The
						following meanings apply in this division unless the context clearly indicates
						otherwise.
(1) Centrifugal
					 compressor--A piece of equipment for raising the pressure of natural gas by
					 drawing in low-pressure natural gas and discharging significantly
					 higher-pressure natural gas by means of mechanical rotating vanes or impellers.
					 Screw, sliding vane, and liquid ring compressors are not centrifugal
					 compressors.
(2) Closure device--A
					 piece of equipment that covers an opening in the roof of a fixed roof storage
					 tank and either can be temporarily opened or has a component that provides a
					 temporary opening. Examples of closure devices include, but are not limited to,
					 thief hatches, pressure relief valves, pressure-vacuum relief valves, and
					 access hatches.
(3)
					 Difficult-to-monitor--Equipment that cannot be inspected without elevating the
					 inspecting personnel more than two meters above a support surface.
(4) Fugitive emission components--Except for
					 vents as defined in §
											101.1 of
					 this title (relating to Definitions) and sampling systems, equipment as defined
					 in subparagraphs (A) and (B) of this paragraph that has the potential to leak
					 volatile organic compounds (VOC) emissions.
(A) At a natural gas processing plant,
					 equipment considered fugitive components include, but are not limited to, any
					 pump, pressure relief device, open-ended valve or line, valve, flange, or other
					 connector that is in VOC service or wet gas service, and any closed vent system
					 or control device not subject to another section in this division that
					 specifies one or more instrument monitoring requirements for the system or
					 device. A compressor or sampling connection system that is exempt from the
					 fugitive monitoring requirements in §
												115.352 and
					 §
												115.354
					 of this title (relating to Fugitive Emission Control in Petroleum Refining,
					 Natural Gas/Gasoline Processing, and Petrochemical Processes in Ozone
					 Nonattainment Areas) on or before December 31, 2022 is excluded as a fugitive
					 monitoring component under this subparagraph.
(B) At a well site or gathering and boosting
					 station from equipment considered fugitive emissions components include, but
					 are not limited to, valves, compressors, connectors, pressure relief devices,
					 open-ended lines, flanges, instruments, meters, or other openings that are not
					 on a storage tank subject to § 115.175 of this title (relating to Storage
					 Tank Control Requirements), and any closed vent system or control device not
					 subject to another section in this division that specifies one or more
					 instrument monitoring requirements for the system or device. A compressor seal
					 at a gathering and boosting station that is addressed in § 115.173 of this
					 title (relating to Compressor Control Requirements) is not included as a
					 fugitive emission component.