Wisconsin Administrative Code › Department of Natural Resources › NR 400-499 - Environmental Protection - Air Pollution Control › Chapter NR 420 - Control Of Organic Compound Emissions From Petroleum And Gasoline Sources › Section NR 420.02 - Definitions

Current through June 24, 2024
The definitions contained in chs.
			  NR
			  400 and
			  419 apply to the terms used in
			  this chapter. In addition, the following definitions apply to the terms used in
			  this chapter and chs. NR 421 and
			  425:
(1)"Accumulator" means the reservoir of a
			condensing unit receiving the condensate from the condenser. This includes hot
			wells.
(5)"Average monthly storage
			temperature" means an arithmetic average calculated for each calendar month, or
			portion thereof if storage is for less than a month, from bulk petroleum liquid
			storage temperatures determined at least once every 7 days.
(6)"Bottom filling" means the filling of a
			tank truck or stationary storage tank through an opening that is flush with or
			near the tank bottom.
(8)"Bulk
			gasoline terminal" means a gasoline storage facility which receives gasoline
			from refineries primarily by pipeline, ship, or barge, and delivers gasoline to
			bulk gasoline plants or to commercial or retail accounts primarily by tank
			truck.
(9)"Component" means, for
			purposes of petroleum refineries, any piece of equipment at a refinery which
			has the potential to leak VOCs. These pieces of equipment include, but are not
			limited to, pumping seals, compressor seals, seal oil degassing vents, pipeline
			valves, flanges and other connections, pressure relief devices, process drains,
			and open ended pipes. Excluded from these pieces of equipment are valves which
			have no external controls, such as in-line check valves.
(10)"Condensate" means hydrocarbon liquid
			separated from natural gas which condenses due to changes in the temperature or
			pressure and remains liquid at standard conditions.
(11)"Condenser" means any heat transfer
			device used to liquefy vapors by removing their latent heats of vaporization.
			Such devices include, but are not limited to, shell and tube, coil, surface, or
			contact condensers.
(13)"Crude
			petroleum" means a naturally occurring mixture which consists of hydrocarbons;
			or sulfur, nitrogen and oxygen derivatives of hydrocarbons, and which is liquid
			at standard conditions.
(14)"Custody transfer" means the transfer of
			produced crude petroleum or condensate, after processing or treating in the
			producing operations, from storage tanks or automatic transfer facilities to
			pipelines or any other forms of transportation.
(15)"Delivery vessel" means a tank truck or
			trailer or a railroad tank car equipped with a storage tank used for the
			transport of gasoline from sources of supply to stationary storage tanks of
			bulk gasoline plants or gasoline dispensing facilities.
(16)"Firebox" means the chamber or
			compartment of a boiler or furnace in which materials are burned but does not
			mean the combustion chamber of an incinerator.
(17)"Forebays" means the primary sections of
			a wastewater separator.
(18)"Fuel
			gas" means any gas which is generated by a petroleum refinery process unit or
			by a petroleum liquid transfer operation and which is combusted, or any gaseous
			mixture of such gas and natural gas which is combusted.
(20)"Gasoline dispensing facility" means any
			site where gasoline is dispensed to motor vehicle gasoline tanks from
			stationary storage tanks.
(21)"Gaseous service" means petroleum
			refinery equipment which processes, transfers or contains a VOC or mixture of
			VOCs in the gaseous phase.
(22)"Leaking component" means any component
			at a petroleum refinery which has a VOC concentration exceeding 10,000 ppm when
			tested in the manner approved by the department.
(23)"Liquid-mounted seal" means a primary
			floating roof seal mounted in continuous contact with the liquid in a liquid
			organic compound storage tank between the tank wall and the floating roof
			around the internal circumference of the tank.
(24)"Liquid service" means petroleum refinery
			equipment which processes, transfers or contains a VOC or mixture of VOCs in
			the liquid phase.
(24m)"Liquid
			tight" means having a liquid leak rate not exceeding 0.10 gallons per hour when
			measured with a ±5% accuracy.
(25)"Lower explosive limit" or "LEL" means
			the lower limit of flammability of a gas or vapor at ordinary ambient
			temperatures expressed as percent propane in air by volume.
(27)"Petroleum" means the crude oil removed
			from the earth and the oils derived from tar sands, shale, coal and
			coke.
(29)"Petroleum refinery"
			means any facility engaged in producing gasoline, kerosene, distillate fuel
			oils, residual fuel oils, lubricants or other products through distillation of
			petroleum or through redistillation, cracking, extraction or reforming of
			unfinished petroleum derivatives.
(29m)"Process gas" means any gas generated by
			a petroleum refinery process unit except fuel gas and process upset gas as
			defined in this section.
(29p)"Process upset gas" means any gas
			generated by a petroleum refinery process unit as a result of startup,
			shutdown, upset or malfunction.
(30)"Refinery process unit" means any segment
			of a petroleum refinery in which a specific processing operation is
			conducted.
(31)"Reid vapor
			pressure" means the absolute vapor pressure of volatile crude petroleum and
			volatile nonviscous petroleum liquids except liquefied petroleum gases as
			determined by ASTM D323-08, incorporated by reference in s.
			NR
			484.10(6).
(32m)"Top off" means to attempt to dispense
			more gasoline to a motor vehicle fuel tank after the vapor recovery dispensing
			nozzle has shut off.
(33)"True
			vapor pressure" means the equilibrium partial pressure exerted by a petroleum
			liquid as determined in accordance with methods described in American Petroleum
			Institute Publication 2517,
Evaporative Loss from External Floating
			Roof Tanks,
3rd edition, February 1989, incorporated by reference in
			s.
			NR
			484.11.
(34)"Turnaround" means the procedure of
			shutting a refinery unit down after a run to do necessary maintenance and
			repair work and putting the unit back on stream.
(35)"Vacuum producing system" means any
			reciprocating, rotary, or centrifugal blower or compressor, or any jet ejector
			or device that takes suction from a pressure below atmospheric and discharges
			against atmospheric pressure.
(36)"Vapor balance system" means a
			combination of pipes or hoses which create a closed system between the vapor
			spaces of an unloading tank and a receiving tank such that vapors displaced
			from the receiving tank are transferred to the tank being unloaded.
(37)"Vapor collection system" means, for the
			purpose of liquid organic compound transfer operations, a vapor transport
			system which uses direct displacement by the liquid loaded to force vapors from
			the tank into a vapor control system or vapor holding tank.
(38)"Vapor-mounted seal" means any primary
			floating roof seal mounted so that there is an annular vapor space underneath
			the seal. The annular vapor space is bounded by the bottom of the primary seal,
			the tank wall, the liquid surface, and the floating roof.
(39)"Vapor recovery system" or "vapor control
			system" mean a system that gathers organic compound vapors released during the
			operation of any transfer, storage, or process equipment and processes the
			vapors so as to prevent their emission into the ambient air.
(39m)"Vapor tight" means having the detection
			of less than 10,000 ppm hydrocarbon concentration, as determined by Method 21
			in Appendix A of 40 CFR part 60, incorporated by reference in s.
			NR
			484.04(17), at a distance of one inch
			from the source.
(40)"Wastewater
			(oil-water) separator" means any device or piece of equipment which utilizes
			the difference in density between oil and water to remove oil and associated
			chemicals from water. This includes any device, such as a flocculation tank,
			clarifier, etc., which removes petroleum derived compounds from
			wastewater.
(41)"Waxy, heavy pour
			crude petroleum" means a crude petroleum with a pour point of 10°C
			(50°F) or higher as determined by ASTM D97-02, incorporated by reference in
			s.
			NR
			484.10(2).