Tenn. Comp. R. & Regs. 1200-03-11-.06 - EQUIPMENT LEAKS (FUGITIVE EMISSION SOURCES)

(1) Applicability:
(a) The provisions of this rule apply to each of the following sources that are intended to operate in volatile hazardous air pollutant (VHAP) service: pumps, compressors, pressure relief devices, sampling connection systems, open-ended valves or lines, valves, flanges and other connectors, product accumulator vessels, and control devices or systems required by this rule.
(b) The provisions of this rule apply to the sources listed in subparagraph (a) of this paragraph after the date of promulgation of a specific rule in this chapter.
(c) While the provisions of this rule are effective, a source to which this rule applies that is also subject to the provisions of chapter 16 only will be required to comply with the provisions of this rule.
(2) Definitions: Terms used in this rule not defined herein or in paragraph .01(3) of this chapter shall have the meaning given to them in chapter 1200-03-2.
(a) ''Closed-vent system'' means a system that is not open to atmosphere and that is composed of piping, connections, and, if necessary, flow-inducing devices that transport gas or vapor from a piece or pieces of equipment to a control device.
(b) ''Connector'' means, flanged, screwed, welded, or other joined fittings used to connect two pipe lines or a pipe line and a piece of equipment. For the purpose of reporting and recordkeeping, connector means flanged fittings that are not covered by insulation or other materials that prevent location of the fittings.
(c) ''Control device'' means an enclosed combustion device, vapor recovery system, or flare.
(d) ''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.
(e) ''Equipment'' means each pump, compressor, pressure relief device, sampling connection system, open-ended valve or line, valve, flange or other connector, product accumulator vessel in VHAP service, and any control devices or systems required by this rule.
(f) ''First attempt at repair'' means to take rapid action for the purpose of stopping or reducing leakage of organic material to atmosphere using best practices.
(g) ''In gas/vapor service'' means that a piece of equipment contains process fluid that is in the gaseous state at operating conditions.
(h) ''In liquid service'' means that a piece of equipment is not in gas/vapor service.
(i) ''In-situ sampling systems'' means nonextractive samplers or in-line samplers.
(j) ''In vacuum service'' means that equipment is operating at an internal pressure which is at least 5 kilopascals (kPa) below ambient pressure.
(k) ''In VHAP service'' means that a piece of equipment either contains or contacts a fluid (liquid or gas) that is at least 10 percent by weight a volatile hazardous air pollutant (VHAP) as determined according to the provisions of subparagraph (6)(d) of this rule. The provisions of subparagraph (6)(d) of this rule also specify how to determine that a piece of equipment is not in VHAP service.
(l) ''In VOC service'' means, for the purposes of this rule, that (a) the piece of equipment contains or contacts a process fluid that is at least 10 percent VOC by weight and (b) the piece of equipment is not in heavy liquid service (as defined in paragraph 1200-03-16-.43(2) ).
(m) ''Open-ended valve or line'' means any valve, except pressure relief valves, having one side of the valve seat in contact with process fluid and one side open to atmosphere, either directly or through open piping.
(n) ''Pressure release'' means the emission of materials resulting from the system pressure being greater than the set pressure of the pressure relief device.
(o) ''Process unit'' means equipment assembled to produce a VHAP or its derivatives as intermediates or final products, or equipment assembled to use a VHAP in the production of a product. A process unit can operate independently if supplied with sufficient feed or raw materials and sufficient product storage facilities.
(p) ''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.
(q) ''Product accumulator vessel'' means any distillate receiver, bottoms receiver, surge control vessel, or product separator in VHAP service that is vented to atmosphere either directly or through a vacuum- producing system. A product accumulator vessel is in VHAP service if the liquid or the vapor in the vessel is at least 10 percent by weight VHAP.
(r) ''Repaired'' means that equipment is adjusted, or otherwise altered, to eliminate a leak as indicated by one of the following: an instrument reading of 10,000 ppm or greater, indication of liquids dripping, or indication by a sensor that a seal or barrier fluid system has failed.
(s) ''Semiannual'' means a 6-month period; the first semiannual period concludes on the last day of the last month during the 180 days following initial startup for new sources; and the first semiannual period concludes on the last day of the last full month during the 180 days after the effective date of a specific rule that references this rule for existing sources.
(t) ''Sensor'' means a device that measures a physical quantity or the change in a physical quantity, such as temperature, pressure, flow rate, pH, or liquid level.
(u) ''Volatile hazardous air pollutant'' or ''VHAP'' means a substance regulated under this chapter for which a standard for equipment leaks of the substance has been proposed and promulgated. Benzene is a VHAP. Vinyl chloride is a VHAP.
(3) Standards for Volatile Hazardous Air Pollutants
(a) General
1. Each owner or operator subject to the provisions of this rule shall demonstrate compliance with the requirements of paragraph (3) for each new and existing source, except as provided in paragraphs (4) and (5).
2. Compliance with this rule will be determined by review of records, review of performance test results, and inspection using the methods and procedures specified in paragraph (6).
3.
(i) An owner or operator may request a determination of alternative means of emission limitation to the requirements of subparagraphs (3)(b), (3)(c), (3)(e), (3)(f), (3)(g), (3)(h), (3)(i), and (3)(k) as provided in paragraph (5).
(ii) If the Technical Secretary makes a determination that a means of emission limitation is at least a permissible alternative to the requirements of subparagraphs (3)(b), (3)(c), (3)(e), (3)(f), (3)(g), (3)(h), (3)(i), (3)(k), an owner or operator shall comply with the requirements of that determination.
4. Each piece of equipment to which this rule applies shall be marked in such a manner that it can be distinguished readily from other pieces of equipment.
5. Equipment that is in vacuum service is excluded from the requirements of subparagraphs (3)(b) to (3)(k) if it is identified as required in part (7) (e)5.
(b) Pumps
1.
(i) Each pump shall be monitored monthly to detect leaks by the methods specified in subparagraph (6)(b), except as provided in part (3)(a)3. and parts 4., 5., and 6. of this subparagraph.
(ii) Each pump shall be checked by visual inspection each calendar week for indications of liquids dripping from the pump seal.
2.
(i) If an instrument reading of 10,000 ppm or greater is measured, a leak is detected.
(ii) If there are indications of liquids dripping from the pump seal, a leak is detected.
3.
(i) When a leak is detected, it shall be repaired as soon as practicable, but not later than 15 calendar days after it is detected, except as provided in subparagraph (3)(j).
(ii) A first attempt at repair shall be made no later than 5 calendar days after each leak is detected.
4. Each pump equipped with a dual mechanical seal system that includes a barrier fluid system is exempt from the requirements of part 1, provided the following requirements are met:
(i) Each dual mechanical seal system is:
(I) Operated with the barrier fluid at a pressure that is at all times greater than the pump stuffing box pressure; or
(II) Equipped with a barrier fluid degassing reservoir that is connected by a closed-vent system to a control device that complies with the requirements of subparagraph (3)(k) or;
(III) Equipped with a system that purges the barrier fluid into a process stream with zero VHAP emissions to atmosphere.
(ii) The barrier fluid is not in VHAP service and, if the pump is covered by standards under chapter 16, is not in VOC service.
(iii) Each barrier fluid system is equipped with a sensor that will detect failure of the seal system, the barrier fluid system, or both.
(iv) Each pump is checked by visual inspection each calendar week for indications of liquids dripping from the pump seal.
(v)
(I) Each sensor as described in subpart (3)(b)4(iii) is checked daily or is equipped with an audible alarm, and
(II) The owner or operator determines, based on design considerations and operating experience, a criterion that indicates failure of the seal system, the barrier fluid system, or both.
(vi)
(I) If there are indications of liquids dripping from the pump seal or the sensor indicates failure of the seal system, the barrier fluid system, or both based on the criterion determined in item (3)(b)4.(v)(II), a leak is detected.
(II) When a leak is detected, it shall be repaired as soon as practicable, but not later than 15 calendar days after it is detected, except as provided in subparagraph (3)(j).
(III) A first attempt at repair shall be made no later than 5 calendar days after each leak is detected.
5. Any pump that is designated, as described in part (7)(e)2., for no detectable emissions, as indicated by an instrument reading of less than 500 ppm above background, is exempt from the requirements of parts (3)(b)1., (3)(b)3., and (3)(b)4. if the pump;
(i) Has no externally actuated shaft penetrating the pump housing,
(ii) Is demonstrated to be operating with no detectable emissions, as indicated by an instrument reading of less than 500 ppm above background, as measured by the method specified in subparagraph (6)(c) and;
(iii) Is tested for compliance with subpart (3)(b)5.(ii) initially upon designation, annually, and at other times requested by the Technical Secretary.
6. If any pump is equipped with a closed-vent system capable of capturing and transporting any leakage from the seal or seals to a control device that complies with the requirements of subparagraph (3)(k) it is exempt from the requirements of parts 1. through 5.
7. Any pump that is located within the boundary of an unmanned plant site is exempt from the weekly visual inspection requirement of subparts (3)(b)1.(ii) and (3)(b)4.(iv), and the daily requirements of item (3)(b)4.(v)(I), provided that each pump is visually inspected as often as practicable and at least monthly.
(c) Compressors
1. Each compressor shall be equipped with a seal system that includes a barrier fluid system and that prevents leakage of process fluid to atmosphere, except as provided in part (3)(a)3. and parts 8. and 9. of this subparagraph.
2. Each compressor seal system as required in part 1. shall be:
(i) Operated with the barrier fluid at a pressure that is greater than the compressor stuffing box pressure; or
(ii) Equipped with a barrier fluid system that is connected by a closed-vent system to a control device that complies with the requirements of subparagraph (3)(k); or
(iii) Equipped with a system that purges the barrier fluid into a process stream with zero VHAP emissions to atmosphere.
3. The barrier fluid shall not be in VHAP service and, if the compressor is covered by standards under chapter 16 shall not be in VOC service.
4. Each barrier fluid system as described in parts 1. through 3. of this subparagraph shall be equipped with a sensor that will detect failure of the seal system, barrier fluid system, or both.
5.
(i) Each sensor as required in part 4. of this section shall be checked daily or shall be equipped with an audible alarm unless the compressor is located within the boundary of an unmanned plant site.
(ii) The owner or operator shall determine, based on design considerations and operating experience, a criterion that indicates failure of the seal system, the barrier fluid system, or both.
6. If the sensor indicates failure of the seal system, the barrier fluid system, or both based on the criterion determined under subpart (3)(c)5.(ii), a leak is detected.
7.
(i) When a leak is detected, it shall be repaired as soon as practicable, but not later than 15 calendar days after it is detected, except as provided in subparagraph (3)(j).
(ii) A first attempt at repair shall be made no later than 5 calendar days after each leak is detected.
8. A compressor is exempt from the requirements of parts 1. and 2. of this subparagraph if it is equipped with a closed-vent system capable of capturing and transporting any leakage from the seal to a control device that complies with the requirements of subparagraph (3)(k), except as provided in part 9 of this subparagraph.
9. Any compressor that is designated, as described in part (7)(e)2., for no detectable emission as indicated by an instrument reading of less than 500 ppm above background is exempt from the requirements of parts 1. through 8. of this subparagraph if the compressor:
(i) Is demonstrated to be operating with no detectable emissions, as indicated by an instrument reading of less than 500 ppm above background, as measured by the method specified in subparagraph (6)(c); and
(ii) Is tested for compliance with subpart (3)(c)9.(i) initially upon designation, annually, and at other times requested by the Technical Secretary.
(d) Pressure relief devices in gas/vapor service
1. Except during pressure releases, each pressure relief device in gas/vapor service shall be operated with no detectable emissions, as indicated by an instrument reading of less than 500 ppm above background, as measured by the method specified in subparagraph (6)(c).
2.
(i) After each pressure release, the pressure relief device shall be returned to a condition of no detectable emissions, as indicated by an instrument reading of less than 500 ppm above background, as soon as practicable, but no later than 5 calendar days after each pressure release except as provided in subpart (3)(j).
(ii) No later than 5 calendar days after the pressure release, the pressure relief device shall be monitored to confirm the condition of no detectable emissions, as indicated by an instrument reading of less than 500 ppm above background, as measured by the method specified in subparagraph (6)(c).
3. Any pressure relief device that is equipped with a closed-vent system capable of capturing and transporting leakage from the pressure relief device to a control device as described in subparagraph (3)(k) is exempt from the requirements of parts 1 and 2. of this subparagraph.
(e) Sampling connecting systems
1. Each sampling connection system shall be equipped with a closed-purge system or closed vent system except as provided in part (3)(a)3.
2. Each closed-purge system or closed-vent system as required in part 1. of this subparagraph shall;
(i) Return the purged process fluid directly to the process line with zero VHAP emissions to atmosphere; or
(ii) Collect and recycle the purged process fluid with zero VHAP emissions to atmosphere; or
(iii) Be designed and operated to capture and transport all the purged process fluid to a control device that complies with the requirements of subparagraph (3)(k).
3. In-situ sampling systems are exempt from the requirements of parts 1. and 2. of this subparagraph.
(f) Open-ended valves or lines
1.
(i) Each open-ended valve or line shall be equipped with a cap, blind flange , plug, or a second valve, except as provided in part (3)(a)3.
(ii) The cap, blind flange, plug, or second valve shall seal the open end at all times except during operations requiring process fluid flow through the open-ended valve or line.
2. Each open-ended valve or line equipped with a second valve shall be operated in a manner such that the valve on the process fluid end is closed before the second valve is closed.
3. When a double block and bleed system is being used, the bleed valve or line may remain open during operations that require venting the line between the block valves but shall comply with part 1. of this subparagraph at all other times.
(g) Valves
1. Each valve shall be monitored monthly to detect leaks by the method specified in subparagraph (6)(b) and shall comply with parts 2. through 5. of this subparagraph, except as provided in parts 6., 7., and 8. of this subparagraph, and subparagraphs (4)(a) or (4)(b), and part (3)(a)3.
2. If an instrument reading of 10,000 ppm or greater is measured, a leak is detected.
3.
(i) Any valve for which a leak is not detected for 2 successive months may be monitored the first month of every quarter, beginning with the next quarter, until a leak is detected.
(ii) If a leak is detected, the valve shall be monitored monthly until a leak is not detected for 2 successive months.
4.
(i) When a leak is detected, it shall be repaired as soon as practicable, but no later than 15 calendar days after the leak is detected, except as provided in subparagraph (3)(j).
(ii) A first attempt at repair shall be made no later than 5 calendar days after each leak is detected.
5. First attempts at repair include, but are not limited to, the following best practices where practicable:
(i) Tightening of bonnet bolts;
(ii) Replacement of bonnet bolts;
(iii) Tightening of packing gland nuts; and
(iv) Injection of lubricant into lubricated packing.
6. Any valve that is designated, as described in part (7)(e)2., for no detectable emissions, as indicated by an instrument reading of less than 500 ppm above background, is exempt from the requirements of part (3)(g)1. if the valve:
(i) Has no external actuating mechanism in contact with the process fluid;
(ii) Is operated with emissions less than 500 ppm above background, as measured by the method specified in subparagraph (6)(e) and
(iii) Is tested for compliance with subpart (3)(g)6.(ii) initially upon designation, annually, and at other times requested by the Technical Secretary.
7. Any valve that is designated, as described in part (7)(f)1., as an unsafe-to-monitor valve is exempt from the requirements of part (3)(g)1. if:
(i) The owner or operator of the valve demonstrates that the valve is unsafe to monitor because monitoring personnel would be exposed to an immediate danger as a consequence of complying with part (3)(g)1; and
(ii) The owner or operator of the valve has a written plan that requires monitoring of the valve as frequent as practicable during safe-to-monitor times.
8. Any valve that is designated, as described in part (7)(f)2., as a difficult-to-monitor valve is exempt from the requirements of part (3)(g)1. if:
(i) The owner or operator of the valve demonstrates that the valve cannot be monitored without elevating the monitoring personnel more than 2 meters above a support surface;
(ii) The process unit within which the valve is located is an existing process unit; and
(iii) The owner or operator of the valve follows a written plan that requires monitoring of the valve at least once per calendar year.
(h) Pressure relief devices in liquid service and flanges and other connectors.
1. Pressure relief devices in liquid service and flanges and other connectors shall be monitored within 5 days by the method specified in subparagraph (6)(b) if evidence of a potential leak is found by visual, audible, olfactory, or any other detection method except as provided in part (3)(a)3.
2. If an instrument reading of 10,000 ppm or greater is measured, a leak is detected.
3.
(i) When a leak is detected, it shall be repaired as soon as practicable, but not later than 15 calendar days after it is detected, except as provided in subparagraph (3)(j).
(ii) The first attempt at repair shall be made no later than 5 calendar days after each leak is detected.
4. First attempts at repair include, but are not limited to, the best practices described under part (3)(g)5.
(i) Product accumulator vessels

Each product accumulator vessel shall be equipped with a closed-vent system capable of capturing and transporting any leakage from the vessel to a control device as described in subparagraph (3)(k) except as provided in part (3)(a)3.

(j) Delay of repair
1. Delay of repair of equipment for which leaks have been detected will be allowed if the repair is technically infeasible without a process unit shutdown. Repair of this equipment shall occur before the end of the next process unit shutdown.
2. Delay of repair of equipment for which leaks have been detected will be allowed for equipment that is isolated from the process and does not remain in VHAP service.
3. Delay of repair for valves will be allowed if:
(i) The owner or operator demonstrates that emissions of purged material resulting from immediate repair are greater than the fugitive emissions likely to result from delay of repair, and
(ii) When repair procedures are effected, the purged material is collected and destroyed or recovered in a control device complying with subparagraph (3)(k).
4. Delay of repair for pumps will be allowed if:
(i) Repair requires the use of a dual mechanical seal system that includes a barrier fluid system, and
(ii) Repair is completed as soon as practicable, but not later than 6 months after the leak was detected.
5. Delay of repair beyond a process unit shutdown will be allowed for a valve if valve assembly replacement is necessary during the process unit shutdown, valve assembly supplies have been depleted, and valve assembly supplies had been sufficiently stocked before the supplies were depleted. Delay or repair beyond the next process unit shutdown will not be allowed unless the next process unit shutdown occurs sooner than 6 months after the first process unit shutdown.
(k) Closed-vent systems and control devices
1. Owners or operators of closed-vent systems and control devices used to comply with provisions of this rule shall comply with the provisions of this subparagraph except as provided in part (3)(a)3.
2. Vapor recovery systems (for example, condensers and adsorbers) shall be designed and operated to recover the organic vapors vented to them with an efficiency of 95 percent or greater.
3. Enclosed combustion devices shall be designed and operated to reduce the VHAP emissions vented to them with an efficiency of 95 percent or greater or to provide a minimum residence time of 0.50 seconds at a minimum temperature of 7600C.
4.
(i) Flares used to comply with this rule shall comply with the requirements of 1200-03-16-.01(11).
(ii) Flares shall be operated with a flame present at all times, as determined by the methods specified in subparagraph (6)(e), of this rule.
(iii) Flares shall be used only with the net heating value of the gas being combusted being 11.2 MJ/scm (300 Btu/scf) or greater if the flare is steam-assisted or air-assisted; or with the net heating value of the gas being combusted being 7.45 MJ/scm (200 Btu/scf) or greater if the flare is nonassisted. The net heating value of the gas being combusted shall be determined by the method specified in subparagraph (6)(e), of this rule.
(iv) Steam-assisted and nonassisted flares shall be designed for and operated with an exit velocity, as determined by the method specified in part (6)(e)4., of this rule, less than 18.3 m/sec (60 ft/sec).
(v) Air-assisted flares shall be designed and operated with an exit velocity less than the velocity, Vmax, as determined by the method specified in part (6)(e)5, of this rule.
(vi) Flares used to comply with this subpart shall be steam-assisted, air-assisted, or nonassisted.
5. Owners or operators of control devices that are used to comply with the provisions of this rule shall monitor these control devices to ensure that they are operated and maintained in conformance with their design.
6.
(i) Closed-vent systems shall be designed for and operated with no detectable emissions, as indicated by an instrument reading of less than 500 ppm above background and by visual inspections, as determined by the methods specified in subparagraph (6)(c), of this rule.
(ii) Closed-vent systems shall be monitored to determine compliance with subparagraph (3)(k) initially, annually, and at other times requested by the Technical Secretary.
(iii) Leaks, as indicated by an instrument reading greater than 500 ppm and visual inspections, shall be repaired as soon as practicable, but not later than 15 calendar days after the leak is detected.
(iv) A first attempt at repair shall be made no later than 5 calendar days after the leak is detected.
7. Closed-vent systems and control devices used to comply with provisions of this rule shall be operated at all times when emissions may be vented to them.
(4) Alternative standards for valves in VHAP service
(a) Allowable percentages of valves leaking
1. An owner or operator may elect to have all valves within a process unit comply with an allowable percentage of valves leaking of equal to or less than 2.0 percent.
2. The following requirements shall be met if an owner or operator decides to comply with an allowable percentage of valves leaking:
(i) An owner or operator must notify the Technical Secretary that the owner or operator has elected to have all valves within a process unit to comply with the allowable percentage of valves leaking before implementing this alternative standard, as specified in subparagraph (8)(d).
(ii) A performance test as specified in part (4)(a)3. shall be conducted initially upon designation, annually, and at other times requested by the Technical Secretary.
(iii) If a valve leak is detected, it shall be repaired in accordance with parts (3)(g)4. and (3)(g)5.
3. Performance tests shall be conducted in the following manner:
(i) All valves in VHAP service within the process unit shall be monitored within 1 week by the methods specified in subparagraph (6)(b).
(ii) If an instrument reading of 10,000 ppm or greater is measured a leak is detected.
(iii) The leak percentage shall be determined by dividing the number of valves in VHAP service for which leaks are detected by the number of valves in VHAP service within the process unit.
4. Owner or operators who elect to have all valves comply with this alternative standard shall not have a process unit with a leak percentage greater than 2.0 percent.
5. If an owner or operator decides no longer to comply with subparagraph (4)(a), the owner or operator must notify the Technical Secretary in writing that the work practice standard described in parts (3)(g)1 through (3)(g)5 will be followed.
(b) Skip period leak detection and repair
1.
(i) An owner or operator may elect for all valves within a process unit to comply with one of the alternative work practices specified in subparts (4)(b)2.(ii) and (4)(b)2.(iii) of this subparagraph.
(ii) An owner or operator must notify the Technical Secretary before implementing one of the alternative work practices, as specified in subparagraph (8)(d).
2.
(i) An owner or operator shall comply initially with the requirements for valves , as described in subparagraph (3)(g).
(ii) After 2 consecutive quarterly leak detection periods with the percentage of valves leaking equal to or less than 2.0, an owner or operator may begin to skip 1 of the quarterly leak detection periods for the valves in VHAP service.
(iii) After 5 consecutive quarterly leak detection periods with the percentage of valves leaking equal to or less than 2.0, an owner or operator may begin to skip 3 of the quarterly leak detection periods for the valves in VHAP service.
(iv) If the percentage of valves leaking is greater than 2.0, the owner or operator shall comply with the requirements as described in subparagraph (3)(g) but may again elect to use this subparagraph.
(5) Alternative means of emission limitation
(a) Permission to use an alternative means of emission limitation shall be governed by the following procedures:
(b) Where the standard is an equipment, design, or operational requirement:
1. Each owner or operator applying for permission shall be responsible for collecting and verifying test data for an alternative means of emission limitation.
2. The Technical Secretary will compare test data for the means of emission limitation to test data for the equipment, design, and operational requirements.
3. The Technical Secretary may condition the permission on requirements that may be necessary to assure operation and maintenance to achieve the same emission reduction as the equipment, design, and operational requirements.
(c) Where the standard is a work practice:
1. Each owner or operator applying for permission shall be responsible for collecting and verifying test data for an alternative means of emission limitation.
2. For each source for which permission is requested, the emission reduction achieved by the required work practices shall be demonstrated for a minimum period of 12 months.
3. For each source for which permission is requested, the emission reduction achieved by the alternative means of emission limitation shall be demonstrated.
4. Each owner or operator applying for permission shall commit in writing each source to work practices that provide for emission reductions equal to or greater than the emission reductions achieved by the required work practices.
5. The Technical Secretary will compare the demonstrated emission reduction for the alternative means of emission limitation to the demonstrated emission reduction of the required work practices and will consider the commitment in part (5)(c)4.
6. The Technical Secretary may condition the permission on requirements that may be necessary to assure operation and maintenance to achieve the same emission reduction as the required work practices of this rule.
(d) An owner or operator may offer a unique approach to demonstrate the alternative means of emission limitation.
(e)
1. Manufacturers of equipment used to control equipment leaks of a VHAP may apply to the Technical Secretary for permission for an alternative means of emission limitation that achieves a reduction in emissions of the VHAP achieved by the equipment, design, and operational requirements of this rule.
2. The Technical Secretary will grant permission according to the provisions of subparagraphs (5)(b), (5)(c) and (5)(d).
(6) Test methods and procedures
(a) Each owner or operator subject to the provisions of this rule shall comply with the test methods and procedures requirements provided in this paragraph.
(b) Monitoring, as required in paragraphs (3), (4), and (5), shall comply with the following requirements:
1. Monitoring shall comply with Reference Method 21 as specified in part 1200-03-16-.01 -(5)(g)21.
2. The detection instrument shall meet the performance criteria of Reference Method 21 (as referenced in 1200-03-16-.01(5)(g) ).
3. The instrument shall be calibrated before use each day of its use by the procedures specified in Reference Method 21.
4. Calibration gases shall be:
(i) Zero air (less than 10 ppm of hydrocarbon in air); and
(ii) A mixture of methane or n-hexane and air at a concentration of approximately, but less than, 10,000 ppm methane or n-hexane.
5. The instrument probe shall be traversed around all potential leak interfaces as close to the interface as possible as described in Reference Method 21.
(c) When equipment is tested for compliance with no detectable emissions, as required in parts (3)(b)5., (3)(c)9., (3)(g)6., (3)(k)6., and subparagraph (3)(d), the test shall comply with the following requirements:
1. The requirements of parts (6)(b)1. through (6)(b)4. shall apply.
2. The background level shall be determined, as set forth in Reference Method 21.
3. The instrument probe shall be traversed around all potential leak interfaces as close to the interface as possible as described in Reference Method 21.
4. The arithmetic difference between the maximum concentration indicated by the instrument and the background level is compared with 500 ppm for determining compliance.
(d)
1. Each piece of equipment within a process unit that can conceivably contain equipment in VHAP service is presumed to be in VHAP service unless an owner or operator demonstrates that the piece of equipment is not in VHAP service. For a piece of equipment to be considered not in VHAP service, it must be determined that the percent VHAP content can be reasonably expected never to exceed 10 percent by weight. For purposes of determining the percent VHAP content of the process fluid that is contained in or contacts equipment, procedures that conform to the methods described in ASTM Method D-2267 shall be used. (Note: All references to ASTM in this rule refers to the American Society for Testing Materials. Copies of methods are available for purchase by writing to ASTM, 1916 Race Street, Philadelphia, PA 19103 or by writing to the Tennessee Division of Air Pollution Control, 701 Broadway, 4th Floor Customs House, Nashville, TN 37219. Be sure and specify which method is desired).
2.
(i) An owner or operator may use engineering judgment rather than the procedures in part (6)(d)1 to demonstrate that the percent VHAP content does not exceed 10 percent by weight. When an owner or operator and the Technical Secretary do not agree on whether a piece of equipment is not in VHAP service, however, the procedures in part (6)(d)1 shall be used to resolve the disagreement.
(ii) If an owner or operator determines that a piece of equipment is in VHAP service, the determination can be revised only after following the procedures in part (6)(d)1.
3. Samples used in determining the percent VHAP content shall be representative of the process fluid that is contained in or contacts the equipment or the gas being combusted in the flare.
(e)
1. Reference Method 22 (as specified in part 1200-03-16-.01(5)(g) 22.) shall be used to determine compliance of flares with the visible emission provisions of this rule.
2. The presence of a flare pilot flame shall be monitored using a thermocouple or any other equivalent device to detect the presence of a flame.
3. The net heating value of the gas being combusted in a flare shall be calculated using the following equation:

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Where:

HT = Net heating value of the sample, MJ/ scm: where the net enthalpy per mole of offgas is based on combustion at 250C and 760 mm Hg, but the standard temperature for determining the volume corresponding to one mole is 200C.

K = Constant, 1.74 x 10-7 (1/ppm) (g mole/ scm) (MJ/kcal) where standard temperature for (g mole/scm) is 200C.

Ci = Concentration of sample component i in ppm, as measured by Reference Method 18 as specified in 1200-03-16-.01(5)(g) 18. and ASTM D2504-67.

Hi = Net heat of combustion of sample component i, kcal/g mole. The heats of combustion may be determined using ASTM D2382-76 if published values are not available or cannot be calculated.

4. The actual exit velocity of a flare shall be determined by dividing the volumetric flowrate (in units of standard temperature and pressure), as determined by Reference Method 2, or 2A, as specified in part 1200-03-16-.01(5)(g) 2., as appropriate, by the unobstructed (free) cross section area of the flare tip.
5. The maximum permitted velocity, Vmax for air-assisted flares shall be determined by the following equation:

Vmax = 8.76 $ 0.7084 (HT)

Where:

Vmax = Maximum permitted velocity, m/sec

8.706 = Constant.

0.7084 = Constant.

HT = The net heating value as determined in part (6)(e)3.

(7) Recordkeeping requirements
(a)
1. Each owner or operator subject to the provisions of this rule shall comply with the recordkeeping requirements of this paragraph.
2. An owner or operator of more than one process unit subject to the provisions of this rule may comply with the recordkeeping requirements for these process units in one recordkeeping system if the system identifies each record by each process unit.
(b) When each leak is detected as specified in subparagraphs (3)(b), (3)(c), (3)(g), and (3)(h), the following requirements apply:
1. A weatherproof and readily visible identification, marked with the equipment identification number, shall be attached to the leaking equipment.
2. The identification on a valve may be removed after it has been monitored for 2 successive months as specified in part (3)(g)3. and no leak has been detected during those 2 months.
3. The identification on equipment, except on a valve, may be removed after it has been repaired.
(c) When each leak is detected as specified in subparagraphs (3)(b), (3)(c), (3)(g), and (3)(h), the following information shall be recorded in a log and shall be kept for 2 years in a readily accessible location:
1. The instrument and operator identification numbers and the equipment identification number.
2. The date the leak was detected and the dates of each attempt to repair the leak.
3. Repair methods applied in each attempt to repair the leak.
4. ''Above 10,000'' if the maximum instrument reading measured by the methods specified in subparagraph (6)(a) after each repair attempt is equal to or greater than 10,000 ppm.
5. ''Repair delayed'' and the reason for the delay if a leak is not repaired within 15 calendar days after discovery of the leak.
6. The signature of the owner or operator (or designate) whose decision it was that repair could not be effected without a process shutdown.
7. The expected date of successful repair of the leak if a leak is not repaired within 15 calendar days.
8. Dates of process unit shutdowns that occur while the equipment is unrepaired.
9. The date of successful repair of the leak.
(d) The following information pertaining to the design requirements for closed-vent systems and control devices described in subparagraph (3)(k) shall be recorded and kept in a readily accessible location:
1. Detailed schematics, design specifications, and piping and instrumentation diagrams.
2. The dates and descriptions of any changes in the design specifications.
3. A description of the parameter or parameters monitored, as required in part (3)(k)5., to ensure that control devices are operated and maintained in conformance with their design and an explanation of why that parameter (or parameters) was selected for the monitoring.
4. Periods when the closed-vent systems and control devices required in subparagraph (3)(b), (3)(c), (3)(d), (3)(e), and (3)(i) are not operated as designed, including periods when a flare pilot light does not have a flame.
5. Dates of start-ups and shutdowns of the closed-vent systems and control devices required in subparagraphs (3)(b), (3)(c), (3)(d), (3)(e), and (3)(i).
(e) The following information pertaining to all equipment subject to the requirements in paragraph (3) shall be recorded in a log that is kept in a readily accessible location:
1. A list of identification numbers for equipment (except welded fittings) subject to the requirements of this rule.
2.
(i) A list of identification numbers for equipment that the owner or operator elects to designate for no detectable emissions, as indicated by an instrument reading of less than 500 ppm above background, under the provisions of parts (3)(b)5., (3)(c)9., and (3)(g)6.
(ii) The designation of this equipment as subject to the requirements of parts (3)(b)5., (3)(c)9., and (3)(g)6. shall be signed by the owner or operator.
3. A list of equipment identification numbers for pressure relief devices required to comply with part (3)(d)1.
4.
(i) The dates of each compliance test required in parts (3)(b)5., (3)(c)9. , (3(g) 6., and subparagraph (3)(d).
(ii) The background level measured during each compliance test.
(iii) The maximum instrument reading measured at the equipment during each compliance test.
5. A list of identification numbers for equipment in vacuum service.
(f) The following information pertaining to all valves subject to the requirements of parts (3)(g)7. and (3)(g)8. of this rule, shall be recorded in a log that is kept in a readily accessible location:
1. A list of identification numbers for valves that are designated as unsafe to monitor, an explanation for each valve stating why the valve is unsafe to monitor, and the plan for monitoring each valve.
2. A list of identification numbers for valves that are designated as difficult to monitor, an explanation for each valve stating why the valve is difficult to monitor, and the planned schedule for monitoring each valve.
(g) The following information shall be recorded for valves complying with subparagraph (4)(b):
1. A schedule of monitoring.
2. The percent of valves found leaking during each monitoring period.
(h) The following information shall be recorded in a log that is kept in a readily accessible location:
1. Design criterion required in subparts (3)(b)4.(v) and (3)(c)5.(ii) and an explanation of the design criterion; and
2. Any changes to this criterion and the reasons for the changes.
(i) The following information shall be recorded in a log that is kept in a readily accessible location for use in determining exemptions as provided in the applicability section of this rule and other specific rules:
1. An analysis demonstrating the design capacity of the process unit, and
2. An analysis demonstrating that equipment is not in VHAP service.
(j) Information and data used to demonstrate that a piece of equipment is not in VHAP service shall be recorded in a log that is kept in a readily accessible location.
(8) Reporting requirements
(a)
1. An owner or operator of any piece of equipment to which this rule applies shall submit a statement in writing notifying the Technical Secretary that the requirements of paragraphs (3), (6), (7), and (8) are being implemented.
2. In the case of an existing source or a new source which has an initial startup date preceding November 6, 1988, the statement is to be submitted within 90 days of November 6, l988.
3. In the case of new sources which did not have an initial startup date preceding November 6, 1988, the statement shall be submitted with the application for approval of construction, as described in paragraph (2) of rule 1200-03-11-.01.
4. The statement is to contain the following information for each source:
(i) Equipment identification number and process unit identification.
(ii) Type of equipment (for example, a pump or pipeline valve).
(iii) Percent by weight VHAP in the fluid at the equipment.
(iv) Process fluid state at the equipment (gas/vapor or liquid).
(v) Method of compliance with the standard (for example, 'monthly leak detection and repair'' or ''equipped with dual mechanical seals').
(b) A report shall be submitted to the Technical Secretary semiannually starting 6 months after the initial report required in subparagraph (8)(a), that includes the following information:
1. Process unit identification.
2. For each month during the semiannual reporting period.
(i) Number of valves for which leaks were detected as described in part (3)(g)2. or subparagraph (4)(b).
(ii) Number of valves for which leaks were not repaired as required in part (3)(g)4.
(iii) Number of pumps for which leaks were detected as described in part (3)(b)2. and subpart (3)(b)4.(vi).
(iv) Number of pumps for which leaks were not repaired as required in part (3)(b)3. and subpart (3)(b)4.(vi).
(v) Number of compressors for which leaks were detected as described in part (3)(c)6.
(vi) Number of compressors for which leaks were not repaired as required in part (3)(c)7.
(vii) The facts that explain any delay of repairs and, where appropriate, why a process unit shutdown was technically infeasible.
3. Dates of process unit shutdowns which occurred within the semiannual reporting period.
4. Revisions to items reported according to subparagraph (8)(a) if changes have occurred since the initial report or subsequent revisions to the initial report.
5. The results of all performance tests to determine compliance with parts (3)(b)5., (3)(c)9., (3)(d)1., (3)(g)6., (3)(k)6. and subparagraphs (4)(a) and (4)(b) conducted within the semiannual reporting period.
(c) In the first report submitted as required in subparagraph (8)(a), the report shall include a reporting schedule stating the months that semiannual reports shall be submitted. Subsequent reports shall be submitted according to that schedule, unless a revised schedule has been submitted in a previous semiannual report.
(d) An owner or operator electing to comply with the provisions of subparagraph (4)(a) and (4)(b) shall notify the Technical Secretary of the alternative standard selected 90 days before implementing either of the provisions.
(e) An application for approval of construction or modification will not be required if -
1. The new source complies with the standard, paragraph (3).
2. The new source is not part of the construction of a process unit; and
3. In the next semiannual report required by subparagraph (8)(b) the information in part (8)(a)4. is reported.

Notes

Tenn. Comp. R. & Regs. 1200-03-11-.06
Original rule certified date November 6, l988.

Authority: T.C.A. ยงยง 4-5-202 and 68-25-105.

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