Tenn. Comp. R. & Regs. 1200-03-18-.01 - DEFINITIONS

For the purpose of this chapter, the following definitions apply:

(1) "Actual emissions" means the quantity of volatile organic compounds (VOC's) emitted from a source during a particular time period.
(2) "Ambient air" means that portion of the atmosphere, external to buildings, to which the general public has access.
(3) "As applied" means including dilution solvents added before application of the coating.
(4) "Automobile" means a motor vehicle capable of carrying no more than 12 passengers.
(5) "Bulk gasoline plant" means a gasoline storage and distribution facility, other than a bulk gasoline terminal or a gasoline dispensing facility.
(6) "Bulk gasoline terminal" means a gasoline storage facility that receives gasoline from refineries, delivers gasoline to bulk gasoline plants or to commercial or retail accounts, and has a daily throughput of more than 76,000 L (20,000 gal) of gasoline on a 30-day rolling average.
(7) "Capture efficiency" means the weight per unit time of VOC entering a capture system and delivered to a control device divided by the weight per unit time of total VOC generated by a source of VOC, expressed as a percentage.
(8) "Capture system" means all equipment (including, but not limited to, hoods, ducts, fans, booths, ovens, dryers, etc.) that contains, collects, and transports an air pollutant to a control device.
(9) "Carbon adsorber" means a control device which uses activated carbon to adsorb volatile organic compounds from a gas stream.
(10) "Carbon adsorption system" means a carbon adsorber with an inlet and outlet for exhaust gases and a system to regenerate the saturated adsorbent.
(11) "Coating" means a material applied onto or impregnated into a substrate for protective, decorative, or functional purposes. Such materials include, but are not limited to, paints, varnishes, sealants, adhesives, maskants, and temporary protective coatings.
(12) "Coating line" means a series of one or more coating applicators and any associated drying area and/or oven wherein a coating is applied, dried, and/or cured. A coating line ends at the point where the coating is dried or cured, or prior to any subsequent application of a different coating. It is not necessary to have an oven or a flashoff area in order to be included in this definition. This definition does not apply to web coating.
(13) "Complying coating" means a coating which satisfies the VOC content or emission standard or formulation standard, as applied, specified in this chapter for its use.
(14) "Complying ink" means an ink which satisfies the VOC content or emission standard or formulation standard, as applied, specified in this chapter for its use.
(15) "Condensate" means volatile organic compound (VOC) liquid, separated from natural gas, that condenses due to changes in temperature and/or pressure and remains liquid at standard conditions.
(16) "Condenser" means any heat transfer device used to liquify vapors by removing their latent heats of vaporization. Such devices include, but are not limited to, shell and tube, coil, surface, or contact condensers.
(17) "Construction" means on-site fabrication, erection, or installation of a source, air pollution control or monitoring equipment, or a facility.
(18) "Continuous vapor control system" means a vapor control system that treats vapors displaced from tanks during filling on a demand basis without intermediate accumulation.
(19) "Control device" means equipment (such as an incinerator or carbon adsorber) used to reduce, by destruction or removal, the amount of air pollutant(s) in an air stream prior to discharge to the ambient air.
(20) "Control system" means a combination of one or more capture system(s) and control device(s) working in concert to reduce discharges of pollutants to the ambient air.
(21) "Crude oil" means a naturally occurring mixture that consists of hydrocarbons and/or sulfur, nitrogen, and/or oxygen derivatives of hydrocarbons and that is liquid at standard conditions.
(22) "Day" means a period of 24 consecutive hours beginning at midnight local time, or beginning at a time consistent with a facility's operating schedule.
(23) "Destruction or removal efficiency" means the amount of VOC destroyed or removed by a control device expressed as a percent of the total amount of VOC entering the device.
(24) "Double block-and-bleed system" means two block valves connected in series with a bleed valve or line that can vent the line between the two block valves.
(25) "Emission" means the release or discharge, at the facility, whether directly or indirectly, of VOC into the ambient air.
(26) Reserved.
(27) "External floating roof" means a cover over an open-top storage tank consisting of a double deck or pontoon single deck that rests upon and is supported by the volatile organic liquid being contained and is equipped with a closure seal or seals to close the space between the roof edge and tank shell.
(28) "Facility" means any source or group of sources located within a contiguous area, and under common control.
(29) "First attempt at repair" means to take rapid action for the purpose of stopping or reducing leakage of organic material to the atmosphere using best practices.
(30) "Flashoff area" means the space between the coating application area and the oven.
(31) "Gasoline" means any petroleum distillate or petroleum distillate/alcohol blend having a Reid vapor pressure of 27.6 kilopascals (kPa) (8.15 inches of mercury [in. Hg]) or greater that is used as a fuel for internal combustion engines.
(32) "Gasoline dispensing facility" means any site where gasoline is transferred from a stationary storage tank to a motor vehicle gasoline fuel tank.
(33) "Gasoline tank truck" means a delivery tank truck used at bulk gasoline plants, bulk gasoline terminals, or gasoline dispensing facilities that is loading or unloading gasoline or that has loaded or unloaded gasoline on the immediately previous load.
(34) "Graphic arts" means an industry encompassing printing operations based on letterpress, offset lithography, screen, rotogravure, and flexography.
(35) "Heavy-duty truck" means any motor vehicle rated at more than 3,864 kg (8,500 lb) gross weight designed primarily to transport property.
(36) "Incinerator" means a combustion apparatus in which solid, semisolid, liquid, or gaseous combustible wastes are ignited and burned and from which the solid and gaseous residues contain little or no combustible material.
(37) "Ink" means a fluid composition consisting of colorant to provide optical contrast with a substrate, film formers to provide adhesion to the substrate, oils and/or solvents to provide fluidity and drying, and other functional additives.
(38) "Intermittent vapor control system" means a vapor control system that employs an intermediate vapor holder to accumulate vapors displaced from tanks during filling. The control device treats the accumulated vapors only during automatically controlled cycles.
(39) "Knife coating" means the application of a coating material to a substrate by means of drawing the substrate beneath a knife that spreads the coating evenly over the full width of the substrate.
(40) "Leak" means a VOC emission indicated by an instrument calibrated according to Method 21 using zero air (less than 10 parts per million [ppm] of hydrocarbon in air) and a mixture of methane or n-hexane and air at a concentration of about, but less than, 10,000 ppm methane or n-hexane; by dripping liquid; or by calibrated sensor.
(41) "Lease custody transfer" means the transfer of produced crude oil condensate, after processing and/or treating in the producing operations, from storage tanks or automatic transfer facilities to pipelines or any other forms of transportation.
(42) "Light-duty truck" means any motor vehicle rated at 3,864 kg (8,500 lb) gross weight or less designed primarily to transport property.
(43) "Loading rack" means an aggregation or combination of gasoline loading equipment arranged so that all loading outlets in the combination can be connected to a tank truck or trailer parked in a specified loading space.
(44) "Lower explosive limit" (also denoted as LEL) means the concentration of a compound in air below which a flame will not propagate if the mixture is ignited.
(45) "Maximum theoretical emissions" means the quantity of VOC that theoretically could be emitted by a source without control devices based on the design capacity or maximum production capacity of the source and 8,760 hours of operation per year. The design capacity or maximum production capacity includes use of materials with the highest VOC content used in practice by the source for the 2 years preceding April 22, 1993, and anytime after.
(46) "Maximum true vapor pressure" means the equilibrium partial pressure exerted by a stored volatile organic liquid at the temperature equal to:
(1) for liquids stored above or below the ambient temperature, the highest calendar-month average of the liquid storage temperature, or
(2) for liquids stored at the ambient temperature, the local maximum monthly average temperature as reported by the National Weather Service. This pressure shall be determined:
(a) In accordance with methods described in American Petroleum Institute Bulletin 2517, "Evaporation Loss From External Floating Roof Tanks;" (1962);
(b) By using standard reference texts;
(c) By ASTM D2879-83; or
(d) By any other method approved as a revision to the State Implementation Plan.
(47) "Multicomponent coating" means a coating packaged in two or more parts, which parts are combined before application, and where a coreactant from one part of the coating chemically reacts, at ambient conditions, with a coreactant from another part of the coating.
(48) "Open-ended valve or line" means any valve, except safety relief valves, having one side of the valve seat in contact with process fluid and one side open to the atmosphere, either directly or through open piping.
(49) "Operation" means an activity. For example, a prime coat operation is the activity of applying a prime coat.
(50) "Organic compound" means a chemical compound of carbon excluding carbon monoxide, carbon dioxide, carbonic acid, metallic carbides or carbonates, and ammonium carbonate.
(51) "Oven" means a chamber which is used to bake, cure, polymerize, and/or dry a coating.
(52) "Overall emission reduction efficiency" means the weight per unit time of VOC removed or destroyed by a control device divided by the weight per unit time of VOC generated by a source, expressed as a percentage. The overall emission reduction efficiency can also be calculated as the product of the capture efficiency and the control device destruction or removal efficiency.
(53) "Owner or operator" means any person who owns, leases, controls, operates, or supervises a facility, existing source, new source, or control device.
(54) "Person" means any individual, partnership, copartnership, firm, company, corporation, association, joint stock company, trust, estate, state government, the federal government, political subdivision, or any other legal entity, or their legal representative, agent, or assigns.
(55) "Petroleum" means crude oil and the oils derived from tar sands, shale, and coal.
(56) "Petroleum liquid" means crude oil, condensate, and any finished or intermediate product manufactured or extracted at a petroleum refinery, but not including Nos. 2 through 6 fuel oils as specified in ASTM D396-78; gas turbine fuel oils Nos. 2-GT through 4-GT as specified in ASTM D2880-78; or diesel fuel oils Nos. 2-d and 4-D, as specified in ASTM D975-78.
(57) "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 the redistillation, cracking, or reforming of unfinished petroleum derivatives.
(58) "Plastisol" means a coating made of a mixture of finely divided resin and a plasticizer. Plastisol is applied as a thick gel that solidifies when heated.
(59) "Potential VOC emissions" means the maximum capacity to emit, without add-on emission controls, according to physical and operational design. Any physical or operational limitation, except concerning add-on emission controls, on the capacity to emit shall be treated as part of operational design for the purpose of determining potential emissions if the limitation is enforceable by the Administrator of the EPA and the Technical Secretary, including those under this Division 1200-03, the State Implementation Plan, and permit conditions established pursuant to Chapter 1200-03-09.
(60) "Pressure release" means the emission of materials resulting from system pressure being greater than set pressure of the pressure relief device.
(61) "Prime coat" means the first of two or more coatings applied to a surface.
(62) "Printing" means the mechanical process used to reproduce images, patterns, and text through the transfer of ink to a substrate.
(63) "Printing press" means equipment used to apply words, pictures, or graphic designs to either a continuous substrate or a sheet. A continuous substrate consists of paper, plastic, or other material that is unwound from a roll, passed through coating or ink applicators and any associated drying areas. The press includes all coating and ink applicators, including applicators which apply coatings uniformly across the substrate, and drying areas between unwind and final drying of the continuous substrate. A sheet consists of paper, plastic, or other material that is conveyed through the process. The press includes all coating and ink applicators and drying operations between the time that the sheet is put into the press until it is taken off.
(64) "Process unit" means equipment assembled for the extraction of natural gas liquids from field gas, the fractionation of the liquids into natural gas products, or other operations associated with the processing of natural gas products. A process unit can operate independently if supplied with sufficient feed or raw materials and sufficient storage facilities for the products.
(65) "Process unit shutdown" means a work practice or operational procedure that stops production from a process unit or part of a process unit. An unscheduled work practice or operational procedure that stops production from a process unit or part of a process unit for less than 24 hours is not a process unit shutdown. The use of spare equipment and technically feasible bypassing of equipment without stopping production are not process unit shutdowns.
(66) "Reference Method" means the method of sampling or analyzing described in Appendix A of 40 C.F.R. 60 as of July 1, 1991.
(67) "Reid vapor pressure" means the absolute vapor pressure of volatile crude oil and volatile non-viscous petroleum liquids, except liquified petroleum gases, as determined by ASTM D323-89.
(68) "Repaired" means that equipment is adjusted, or otherwise altered, in order to eliminate a leak as indicated by one of the following: a calibrated instrument reading of 10,000 parts per million (ppm) or greater, indication of liquids dripping, or indication by a calibrated sensor that a seal or barrier fluid system has failed.
(69) "Roll coating" means the application of a coating material to a moving substrate by means of hard rubber, elastomeric, or metal rolls.
(70) "Rotogravure coating" means the application of a coating material to a substrate by means of a roll coating technique in which the pattern to be applied is recessed relative to the non-image area, and the coating material is picked up in these recessed areas and is transferred to the substrate.
(71) "Shutdown" means the cessation of operation of a facility or of its emission control or emission monitoring equipment.
(72) "Solvent" means a substance that is liquid at standard conditions and is used to dissolve or dilute another substance; this term includes, but is not limited to, organic materials used as dissolvers, viscosity reducers, degreasing agents, or cleaning agents.
(73) "Source" means any building, structure, equipment, or installation that releases or discharges, or has the potential to release or discharge, VOC's into the ambient air.
(74) "Standard conditions" means a temperature of 20 C (68 F) and pressure of 760 mm Hg (29.92 in. Hg) .
(75) "Startup" means the setting in operation of a source or of its emission control or emission monitoring equipment.
(76) "Submerged fill" means the method of filling a delivery vessel or storage vessel where product enters within 150 millimeters (mm) (5.9 inches [in]) of the bottom of the delivery or storage vessel. Bottom filling of delivery and storage vessels is included in this definition.
(77) "Substrate" means the surface onto which a coating is applied or into which a coating is impregnated.
(78) "Technical Secretary" means the Technical Secretary or his authorized representative.
(79) "Topcoat" means the final coating(s), as applied, in a multiple-coat operation.
(80) "Truck" means any motor vehicle designed primarily to transport property.
(81) "True vapor pressure" means the equilibrium partial pressure exerted by a volatile organic liquid as determined in accordance with methods described in American Petroleum Institute Bulletin 2517, "Evaporation Loss From Floating Roof Tanks," second edition, February 1980.
(82) "Vapor balance system" means a closed system that causes, by displacement during transfer of gasoline, the transfer of gasoline vapors from a tank being loaded to the tank being unloaded.
(83) "Vapor collection system" means all piping, seals, hoses, connections, pressure-vacuum vents, and other equipment between a gasoline tank truck and a vapor processing unit and/or a storage tank and vapor holder.
(84) "Vapor control system" means a system that limits or prevents release to the ambient air of vapors displaced from a tank during the transfer of gasoline.
(85) "Vapor recovery system" means a vapor gathering system capable of collecting VOC vapors generated during the operation of any transfer, storage, or process equipment.
(86) "Vapor-tight" means equipment that allows no excessive loss of vapors. Compliance with vapor-tight requirements can be determined by checking to ensure that the concentration at a potential leak source is not equal to or greater than 100 percent of the lower explosive limit (LEL) when measured with a combustible gas detector, calibrated with propane, at a distance of 2.54 centimeters (cm) (1 inch [in]) from the source.
(87) "Vapor-tight gasoline tank truck" means a gasoline tank truck that has demonstrated within the 12 preceding months that its product delivery tank will sustain a pressure change of not more than 75 mm (3.0 in) of water within 5 minutes (min) after it is pressurized to 450 mm (18 in) of water; or when evacuated to 150 mm (5.9 in) of water, the same tank will sustain a pressure change of not more than 75 mm (3.0 in) of water within 5 min. This capability is to be demonstrated using the test procedures specified in Reference Method 27.
(88) Reserved.
(89) "Web coating line" means all of the coating applicator(s), drying area(s), or oven(s), located between an unwind station and a rewind station, that are used to apply coating onto a continuous strip of substrate (the web). A web coating line need not have a drying oven.
(90) "Weighted average VOC content" means the VOC content as calculated according to the specifications of Paragraph .82(1) of this chapter or according to the specifications of other rules of this chapter, as applicable.

NOTE: The definitions in Chapter 1200-03-02 apply for those terms not defined in Chapter 1200-03-18.


Tenn. Comp. R. & Regs. 1200-03-18-.01
Original rule filed May 15, 1979; effective July 10, 1979. Amendment filed April 23, 1981; effective December 14, 1981. Amendment filed September 21, 1988; effective November 6, 1988. Amendment filed April 23, 1992; effective June 7, 1992. Repeal and new rule filed March 8, 1993; effective April 22, 1993. Amendment filed July 27, 1995; effective October 9, 1995. Amendment filed May 30, 1996; effective August 10, 1996. Amendment filed October 31, 1997; effective January 12, 1998. Amendment filed June 18, 1999; effective September 1, 1999. Amendments filed March 7, 2006; effective May 21, 2006. Amendments filed May 12, 2010; effective August 10, 2010. Amendments filed April 1, 2015; effective 6/30/2015.

Authority: T.C.A. ยงยง 4-5-201, et. seq., 4-5-202, and 68-201-105.

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