p.1 

OAR Box 1168 

Prepped by Ollie Stewart 

Document Number: 

97) I l-C-26 

Docket Number: 

A-89-10 

Printed 4/29/2008 11:23:20 AM Sheet 97 of 131 
July 17, 1990 

Note to: Reg Neg Committee 

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A-89-10 

II-C-2 6 

ftJUUSJ W B 

-•; ( 

i l FEB I E 

EPA AIR DOCKET 

Attached is a draft of the equipment leak regulation. In this, we have 

used the organization of the benzene equipment leak rule (Subpart V of Part 

61) and have shown the new material as redlined text and the replaced 

provisions as strike out text. This draft includes all sections except the 

provisions for QI programs, which have yet to be discussed by the Committee. 

The alternative standard for batch processes reflects most of the substantive 

Batch WG recommendations that will be presented at the 7/17 meeting (time did 

not allow inclusion of all recommended changes). This draft supercedes all 

previous drafts of the regulation. 

In this draft we have focused primarily on the content of the 

provisions. Consequently, the wording of some provisions may be awkward, 

ambiquous, etc., and the cross references to other parts of the regulation may 

be incorrect. Once the content of the regulation is agreed upon, these 

aspects of the regulation will be cleaned up. 
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fjJ-C-Z^ 

Draft 7/17/90 

National Emission Standard 

For Equipment Leaks (Fugitive Emission Sources) 

§XX.X0 Applicability and designation of sources. 

(a) Tho provisions of this subpart apply to each of tho following 

sources that aro intended to operate in volatile hazardous air pollutant 

(VHAP) service:—pumps, compressors, pressure relief devices, sampling 

connection systems, open ended valvos or linos, valvos, flangos and other 

connectors, product accumulator vessels, and control devices or systems 

required by this subpart. 

(b) Tho provisions of this subpart apply to the sources listed in 

paragraph (a) after tho date of promulgation of a specific subpart in Part 61. 

(a) The provisions of this subpart apply to the following equipment 

that are intended to operate in volatile hazardous air pollutant (VHAP) 

service during the calendar year within a process unit that uses as a reactant 

or makes as an intermediate or final product any of the chemicals listed in 

Appendix : pumps, compressors, agitator seals, 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 subpart. 

(e|) While the provisions of this subpart are effective, a source to 

which this subpart applies that is also subject to the provisions of 40 CFR 

Part 60 enly will be required to comply only with the provisions of this 

subpart, except for each pump and compressor equipped with a dual mechanical 

seal system that is in VOC service. 

§XX.X1 Definitions. 
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Draft 7/17/90 

As used in this subpart, all terms not defined herein shall have the 

meaning given them in the Act, in Subpart A of Part 61, or in specific 

subparts of Part 61; and the following terms shall have specific meaning given 

them: 

"Batch Process" means .a process which is intermittent or discontinuous 

and the vast majority of individual items of equipment is infrequently in VHAP 

service. The equipment is fed intermittently or discontinuously. Processing 

then occurs in this equipment after which the equipment is generally emptied. 

Only batch process equipment in use with a VHAP less than &0% of the total 

available time in the calendar year is eligible for treatment under § , 

(i.e., 8,760 hours/year) of this rule. Examples of industries that use batch 

process include pharmaceutical manufacturers and pesticide manufacturers. 

"Batch product-process equipment train" means the collection of 

equipment (e.g., flanges, reactors, valves, pumps, etc.) configured to produce 

a specific product by a batch process. 

"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. 

"Connector" means flanged, screwed, welded, or other joined fittings 

used to connect two pipe lines or a pipe line and a piece of equipment. 

Fittings welded completely around the circumference of the interface are not 

considered connectors for the purpose of this regulation. For the purpose of 

reporting and recordkeeping, connector means flanged -fittings that are not 
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Draft 7/17/90 

covered by insulation or other materials that prevent location of the 

fittings. 

"Control device" means an enclosed combustion device, vapor recovery 

system (including devices used for temporary recovery and ultimate disposal, 

such as carbon adsorption), or flare. 

"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. 

"Equipment" means each pump, compressor, agitator seal, 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 subpart. 

"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. 

"In gas/vapor service" means that a piece of equipment in VHAP service 

contains a gas or vapor at operating conditions. 

"In heavy liquid service* means that a piece of equipment in VHAP 

service is not in gas/vapor service or in light liquid service. 

"In light liquid service" means that a piece of equipment in VHAP 

service contains a liquid that meets the following conditions: 

(a) The vapor pressure of one or more of the components is greater than 

0.3 kPa at 20*C; 
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Draft 7/17/90 

(b) The total concentration of the pure components having a vapor 

pressure greater than 0.3 kPa at 20*C is equal to or greater than 20 percent 

by weight; and 

(c) The fluid is a liquid at operating conditions. 

[Note: Vapor pressures may be obtained from standard reference texts or 

may be determined by ASTM D-2879 (incorporated by reference as specified in 

§60.17).] 

"In liquid service" means that a piece of equipment in VHAP service is 

not in gas/vapor service. 

"In-situ sampling systems" means nonextractive samplers or in-line 

samplers. 

"In vacuum service" means that equipment is operating at an internal 

pressure which is at least 5 kilopascals (kPa) below ambient pressure. 

"In VHAP service" means that a piece of equipment either contains or 

contacts a fluid (liquid or gas) that is at least W | percent by weight a 

hazardous air pollutant (VHAP) as determined according to the provisions of 

§XX.X5(d). The provisions of §XX.X5(d) also specify how to determine that a 

piece of equipment is not in VHAP service. 

"In VOC service" means, for the purposes of this subpart, that (a) the 

piece of equipment contains or contacts a process fluid that is at least 10 

percent VOC by weight (see 40 CFR 60.2 for the definition of volatile organic 

compound or VOC and 40 CFR 60.485(d) to determine whether a piece of equipment 

is not in VOC service) and (b) the piece of equipment is not in heavy liquid 

service as defined in 40 CFR 60.481. 

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Draft 7/17/90 

"Malfunction* means any sudden and unavoidable failure of air pollution 

control equipment or process equipment or of a process to operate in a normal 

or usual manner. Failures that are caused entirely or in part by poor 

maintenance, careless operation, or any other preventable upset condition or 

preventable equipment breakdown shall not be considered malfunctions. 

"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. 

"Pressure release" means the emission of materials resulting from the 

system pressure being greater than the set pressure of the pressure relief 

device. 

"Process unit" means equipment assembled to produce a VHAP or its 

derivatives as intermediates or final products, or equipment assembled to use 

as a reactant 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. 

"Process unit shutdown" means a work practice or operational procedure 

that stops production from a process unit or part of a process unit results in 

clearing of all process material from a process unit or part of a process unit 

and during which repairs can be effected. 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. 
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Draft 7/17/90 

"Product accumulator vessel" means any distillate receiver, bottoms 

receiver, surge control vessel, or product separator in VHAP service that is 

ventod to atmosphere oithor 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 W § percent by weight VHAP. 

"Repaired" means that equipment is adjusted, or otherwise altered, to 

eliminate a leak as indicated by ono of tho 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 defined in the 

appropriate sections of this subpart. 

"Semiannual" means a 6-month period; the first semiannual period 

concludes on the last day of the last month during the 180 calendar days 

following initial startup for new sources; and the first semiannual period 

concludes on the last day of the last f-u!4 month during the 180 calendar days 

after the effective date of a specific subpart that references this subpart 

for existing sources. 

"Sensor" means a device that measures a physical quantity or the change 

in a physical quantity, such as temperature, pressure, flow rate, pH, or 

1iquid level. 

"Shutdown" means the cessation of operation of a source for any purpose. 

"Volatile hazardous air pollutant" or "VHAP" means a substance regulated 

under this part for which a standard for equipment leaks of tho substance has 

boon proposed and promulgated.—Bonzono is a VHAP.—Vinyl chloride is a VHAP. 

listed in Appendix . 

§XX.X2-1 Standards: General. 
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(a) Each owner or operator subject to the provisions of this subpart 

shall demonstrate compliance with the requirements of §XX.X2-1 to §XX.X2-44|| 

for each new and existing source as required in 40 CFR 61.05, except as 

provided in §XX.X3 and §XX.X4. 

(b) Compliance with this subpart will be determined by review of 

records, review of performance test results, and inspection using the methods 

and procedures specified in §XX.X5. 

(c)(1) An owner or operator may request a determination of alternative 

means of emission limitation to the requirements of §XX.X2-2, §XX.X2-3, 

§XX.X2-5, §XX.X2-6, §XX.X2-7, §XX.X2-8, §XX.X2-9, and §XX.X2-11, §XX.X2-12, 

and §XX.X2-13 as provided in §XX.X4. 

(2) If the Administrator makes a determination that a means of emission 

limitation is at least a permissible alternative to the requirements of 

§XX.X2-2, §XX.X2-3, §XX.X2-5, §XX.X2-6, §XX.X2-7, §XX.X2-8, §XX.X2-9 er 

§XX.X2-11, §XX.X2-12, or §XX.X2-13, the owner or operator shall comply with 

the requirements of that determination. 

(d) Each piece of equipment in a process'unit to which this subpart 

applies shall be marked identified by process unit 4-n such a manner that it 

can be distinguished readily from other pieces of equipment equipment that is 

not subject to this subpart. Identification of the equipment does not require 

physical tagging of the equipment. For example, the equipment may be 

identified on a plant site plan, in log entries, or by designation of process 

unit boundaries by spray paint. 
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Draft 7/17/90 

(e) Equipment that is in vacuum service is excluded from the 

requirements of §XX.X2-2 to §XX.X2:44|| if it is identified as required in 

§XX.X6(ej)(5). 

§XX.X2-2 Standards: Pumps in light liquid service. 

(a)(1) Each pump shall be monitored monthly to dotoct leaks by the 

methods specified in §XX.X5(b), except as provided in §XX.X2 1(c) and 

paragraphs (d), (o), and (f) of this section. 

(2) Each pump shall bo chocked by visual inspection each calendar wook 

for indications of liquids dripping from the pump seal. 

(b)(1) If an instrument reading of 10,000 ppm or greater is moasurod, a 

leak is dotoctod. 

(2) If thoro aro indications of liquids dripping from tho pump seal, a 

leak is dctocted. 

(a) The provisions of this section apply to each pump in VHAP service 

that is in light liquid service. 

(1) The provisions are implemented for existing and new process units 

in the stages specified below: 

(i) For existing process units, the phases of the standard are: 

(A) Phase I, beginning [90, 180?) calendar days after promulgation of 

this subpart and ending I year after promulgation; 

(B) Phase II, beginning after the conclusion of Phase I (i.e., 366 

calendar days after promulgation) and ending 3 years after promulgation of 

this subpart; and 

(C) Phase HI , beginning 3 years and 1 day after promulgation of this 

subpart. 

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Draft 7/17/90 

(ii) For hew process units, the applicable phases of the standard are: 

(A) At startup, comply with the Phase II requirements. 

(B) Beginning 1 year after startup, comply with the Phase III 

requirements. 

(2) The owner or operator of an affected process unit may elect to meei 

the requirements of a later phase during the time period specified for an 

earlier phase. 

(3) The provisions for existing process units apply to process units 

that commenced construction before fdate of proposal in the FEDERAL 

REGISTERl ; the provisions for new process units apply to units the 

construction or modification of which commences after fdate of proposal in 

the FEDERAL REGISTERl . 

(b) The owner or operator of an affected process unit shall monitor ea|| 

pump in VHAP service monthly and shall comply with the requirements of 

paragraphs (c) - (d), except as provided in paragraphs (e), (f), and (g) of 

this section. 

(1) The pumps shall be monitored to detect leaks by the method specified 

in §XX.X5(b). 

(2) The instrument reading that defines a leak in each Phase of the 

standard is: 

(i) For phase I, an instrument reading of 10,000 ppm, or greater, 

(ii) For phase II> an instrument reading of 1,000 ppm, or greater, 

(iii) For phase III, an instrument reading of 1,000 ppm, or greater. 
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(3) Each pump shall be checked by visual inspection each calendar week 

for indications of liquids dripping from the pump seal. If there are 

indications of liquids dripping from the pump seal, a leak is detected. 

(c)(1) 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 §XX.X2-10. 

(2) A first attempt at repair shall be made no later than 5 calendar 

days after the leak is detected. 

(d) Itt Phase III, if the greater of 10 percent of the pumps or 3 pumps 

in a process unit leak, the owner Or operator shall implement a quality 

improvement program for pumps that complies with the requirements of §XX.X3( 

) . The number of pumps at a process unit shall be the sum of all the pumps in 

VHAP service. 

(de) Each pump equipped with a dual mechanical seal system that includes 

a barrier fluid system is included in the calculation of percent leaking 

pumps, but is exempt from the requirements of paragraph (al), provided the 

following requirements are met: 

(1) 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 §XX.X2-11; or 

(iii) Equipped with a closed-loop system that purges the barrier fluid 

into a process stream with zero VHAP emissions to atmosphoro. 

10 
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Draft 7/17/90 

(2) The barrier fluid is not in VHAP service and, if tho pump is covered 

by standards under.40 CFR Part 60, is not in VOC service. 

(3) Each barrier fluid system is equipped with a sensor that will detect 

failure of the seal system, the barrier fluid system, or both. 

(4) Each pump is checked by visual inspection each calendar week for 

indications of liquids dripping from the pump seal. 

(i) If there are indications of liquid dripping from the pump seal at 

the time of the weekly inspection, the pump shall be monitored as specified in 

§XX.X5 to determine the presence of VOC and VHAP in the barrier fluid. 

(ii) If tho monitor reading (taking into account any background 

readings) indicates the prosonco of VHAP, a leak is dotoctod.—For the purpose 

of this paragraph, tho monitor may be calibrated with VHAP, or may employ a 

gas chromatography column to limit the response of the monitor to VHAP, at tho 

option of tho owner or operator. 

(44+ li) If an instrument reading of 10,000 Illll ppm or greater (total 

¥££•)- is measured, a leak is detected. 

(5) Each sensor as described in paragraph (d|)(3) of this section is 

checked daily or is equipped with an audible alarm unless the pump is located 

within the boundary on an unmanned plant site. 

(6)(i) The owner or operator determines, based on design considerations 

and operating experience, criteria applicable to the presence and frequency of 

drips and to the sensor that indicates failure of the seal system, the barrier 

fluid system, or both. 

(ii) If indications of liquids dripping from the pump seal exceed the 

criteria established in paragraph (6)(i), or if, based on the criteria 

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Draft 7/17/90 

established in paragraph (6)(i), the sensor indicates failure of the seal 

system, the barrier fluid system, or both, a leak is detected. 

(iii) 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 §XX.X2-10. 

(iv) A first attempt at repair shall be made no later than 5 calendar 

days after each leak is detected. 

(eff) Any pump that is designated, as described in §XX.X6(e)(2), for no 

detectable emissions, as indicated by an instrument reading of less than 500 

ppm above background during Phase I and less than 50 ppm above background 

during Phases II and III, is included in the calculation of percent leaking 

pumps but is exempt from the requirements of paragraphs (a|), (el), and (d|) 

if the pump: 

(1) Has no externally actuated shaft penetrating the pump housing, 

(2) Is demonstrated to be operating with no detectable emissions, as 

indicated by an instrument reading of less than 500 ppm above background 

during Phase i and less than 50 ppm above background during Phases II and III, 

as measured by the method specified in §XX.X5(c), and 

(3) Is tested for compliance with paragraph (e|)(2) initially upon 

designation, annually, and at other times requested by the Administrator. 

(£§) 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 §XX.X2-11, it is exempt from the 

requirements of paragraphs (af)-(e|). 

12 
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Draft 7/17/90 

Any pump that is located within the boundary of an unmanned plant 

site is exempt from the weekly visual inspection requirement of paragraphs 

(a)(2) and (d)(4) (b)(3) and (e)(4) of this section, and the daily 

requirements of paragraph (d|)(5) of this section, provided that each pump is 

visually inspected as often as practicable and at least monthly. 

§XX.X2-3 Standards: Compressors. 

(a) 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 §XX.X2-l(c) and paragraphs (h) and (i) of this section. 

(b) Each compressor seal system as required in paragraph (a) shall be: 

(1) Operated with the barrier fluid at a pressure that is greater than 

the compressor stuffing box pressure; or 

(2) Equipped with a barrier fluid system that is connected by a 

closed-vent system to a control device that complies with the requirements of 

§XX.X2-11; or 

(3) Equipped with a closed-loop system that purges the barrier fluid 

directly into a process stream. 

(c) The barrier fluid shall not be in VHAP service and, if the 

compressor is covered by standards under 40 CFR Part 60, shall not be in VOC 

service. 

(d) Each barrier fluid system as described in paragraphs (a)-(c) shall 

be equipped With a sensor that will detect failure of the seal system, barrier 

fluid system, or both. 

13 
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Draft 7/17/90 

(e)(1) Each sensor as required in paragraph (d) shall be checked daily 

or shall be equipped with an audible alarm unless the compressor is located 

within the boundary on an unmanned plant site. 

(2) 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. 

(f) If the sensor indicates failure of the seal system, the barrier 

fluid system, or both based on the criterion determined under paragraph (e)(2) 

of this section, a leak is detected. 

(g)(1) 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 §XX.X2-10. 

(2) A first attempt at repair shall be made no later than 5 calendar 

days after each leak is detected. 

(h) A compressor is exempt from the requirements of paragraphs (a) and 

(b) 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 §XX.X2-11, except as provided in paragraph (i). 

(i) Any compressor that is designated, as described in §XX.X6(e)(2), for 

no detectable emissions as indicated by an instrument reading of less than -&S0 

ll ppm above background is exempt from the requirements of paragraphs (a)-(h) 

if the compressor: 

(1) Is demonstrated to be operating with no detectable emissions, as 

indicated by an instrument reading of less than %QQ § | ppm above background, 

as measured by the method specified in §XX.X5(c); and 

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Draft 7/17/90 

(2) Is tested for compliance with paragraph (i)(l) initially upon 

designation, annually, and at other times requested by the Administrator. 

§XX.X2-4 Standards: Pressure relief devices in gas/vapor service. 

(a) 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 SQQ fl ppm above background, as measured 

by the method specified in §XX.X5(c). 

(b)(1) 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 $QQ If ppm above background, as soon as 

practicable, but no later than 5 calendar days after each pressure release. 

(2) 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 -&W 

2.5 ppm above background, as measured by the method specified in §XX.X5(c). 

(c) 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 §XX.X2-11 is exempt from the 

requirements of paragraphs (a) and (b). 

§XX.X2-5 Standards: Sampling connection systems. 

(a) Each sampling connection system shall be equipped with a 

closed-purge system or closed vent system, except as provided in §XX.X2-l(c). 

(b) Each closed-purge system or closed vent system as required in 

paragraph (a) shall: 

15 

tuu 
P.18 

Draft 7/17/90 

(1) Return the purged process fluid directly to the process line w+th 

zero VHAP emissions to atmosphere; or 

(2) Collect and recycle the purged process fluid with zero VHAP 

emissions to atmosphoro; or 

(3) Be designed and operated to capture and transport all the purged 

process fluid to a control device that complies with the requirements of 

§XX.X2-11. 

(c) In-situ sampling systems are exempt from the requirements of 

paragraphs (a) and (b). 

§XX.X2-6 Standards: Open-ended valves or lines. 

(a)(1) Each open-ended valve or line shall-be equipped with a cap, blind 

flange, plug, or a second valve, except as provided in §XX.X2-l(c). 

(2) 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, maintenance, or repair. 

(b) 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. 

(c) 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 paragraph (a) at all other 

times. 

§XX.X2-7 Standards: Valves in gas/vapor service and in light liquid service. 

(a) Each valve shall bo monitored monthly to detect leaks by tho method 

specified in §XX.X5(b) and shall comply with paragraphs (b) (e), oxcopt ao 

16 
P.19 

Draft 7/17/90 

provided in paragraphs (f), (g), and (h) of this section, §XX.X3 1 or 

§XX.X3 2, and §XX.X2 1(c). 

(b) If an instrument reading of 10,000 ppm or greater is measured, a 

leak is detected. 

(c)(1) Any valve for which a leak is not detected for 2 successive 

months may be monitored tho first month of every quarter, beginning with the 

next quarter, until a leak is detected. 

(2) If a leak is dotoctod, the valvo shall bo monitored monthly until a 

leak is not detected for 2 successive months. 

(a) The provisions of this section apply to valves in VHAP service that 

are either in gas service or in light liquid service. 

(I) The provisions are implemented for existing and new process units 

in the stages specified below: 

(i) For existing process units, the phases of the standard are: 

(A) Phase I, beginning [90, 180?] calendar days after promulgation of 

this subpart and ending 1 year after promulgation; 

(B) Phase II, beginning after the conclusion of Phase I (i.e., 366 

calendar days after promulgation) and ending 3 years after promulgation of 

this subpart; and 

(C) Phase III, beginning 3 years and 1 day after promulgation of this 

subpart. 

(ii) For new process units, the applicable phases of the standard are: 

(A) At startup, comply with the Phase H requirements. 

(B) Beginning 1 year after startup, comply with the Phase III 

requirements. 

17 
Draft 7/17/90 

(2) The owner or operator of an affected process unit may elect to meet 

the requirements of a later phase during the time period specified for an 

earlier phase. 

(3) The provisions for existing process units apply to process units 

that commenced construction before [ date of proposal in the FEDERAL REGISTER 

]: the provisions for new process units apply to units the construction or 

modification of which commences after [ date of proposal in the FEDERAL 

REGISTER] 

(b) The owner or operator of an affected process unit shall monitor all 

valves in VHAP service, except as provided in paragraphs (g), (h), and (i) of 

this section, at the intervals specified in paragraphs (c) and (d) of this 

section and shall comply with paragraphs (e) - (k) of this section, except as 

provided in §XX.X2-10 and §XX.X4-1. 

(1) The valves shall be monitored to detect leaks by the method 

specified in §XX.X5 (b). 

(2) The instrument reading that defines a leak in each Phase of the 

standard is ; 

(i) For phase I, an instrument reading of 10,000 ppm, or greater, 

(ii) For phase II, an instrument reading of 500 ppm, or greater, 

(iii) For phase IIl, an instrument reading of 500 ppm, or greater. 

(c) In Phases i and II, each valve shall be monitored quarterly. 

(d) In Phase III, the owner or operator shall monitor valves for leaks 

at the intervals specified below: 

18 
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Draft 7/17/90 

(1) At process units with 2 percent or greater leaking valves,, 

calculated as a rolling average of 2 consecutive periods, the owner oH 

operator shall either: 

(i) monitor each valve once per month; or 

(ii) implement a quality improvement program for valves that complies 

with the requirements of §XX.X3. 

(2) At process units with less than 2 percent leaking valves* the owner 

or operator shall monitor each valve in VHAP service once each quarter, except 

as provided in the following paragraphs (3) and (4). 

(3) At process units with less than 1 percent leaking valves, the owner 

or operator may elect to monitor each valve in VHAP service once everyi| 

quarters. 

(4) At process units with less than 0.5 percent leaking valves, the 

owner or operator may elect to monitor each valve in VHAP service once ever||| 

quarters. 

(e) Percent leaking valves shall be determined by the following 

equation: 

%LV = (LV/(VT -r VC)) X 100 

where 

%LV = percent leaking valves 

LV = number of valves found leaking 

VT. = Total valves monitored 

VC = Credit for removed valves [Note: needs to be determined] 

19 
Draft 7/17/90 

(1) 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 §XX.X2-10. 

(2) A first attempt at repair shall be made no later than 5 calendar 

days after each leak is detected. 

(3) When a leak is detected, the valve shall be monitored monthly until 

a leak is not detected for 2 successive months. 

(eg) First attempts at repair include, but are not limited to, the 

following best practices where practicable: 

(1) Tightening of bonnet bolts; 

(2) Replacement of bonnet bolts; 

(3) Tightening of packing gland nuts; and 

(4) Injection of lubricant into lubricated packing. 

(f) Any valve that is designated, as described in §XX.X6(b)(2), for no 

dotoctablo emissions, as indicated by an instrument reading of loss than 500 

ppm abovo background, is exempt from tho roquiromonts of paragraph (a) if the 

valvo: 

(1) Has no external actuating mechanism in contact with tho process 

fluid; 

(2) Is operated with omissions loss than 500 ppm abovo background, as 

measured by tho method specified in §XX.X5(c); and 

(3) Is tested for compliance with paragraph (f)(2) initially upon 

designation, annually, and at other times roquostod by tho Administrator. 

(§|) Any valve that is designated, as described in §XX.X6(g)(l), as an 

unsafe-to-monitor valve is exempt from the requirements of paragraph (b) if: 

20 
P.23 

Draft 7/17/90 

(1) The owner or operator of the valve determines that the valve is 

unsafe to monitor because monitoring personnel would be exposed to an 

immediate danger as a consequence of complying with paragraph (b); and 

(2) 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. 

(-Nl) Any, valve that is designated, as described in §XX.X6(g)(2), as a 

difficult-to-monitor valve is exempt from the requirements of paragraph (b) 

if: 

(1) The owner or operator of the valve determines that the valve cannot 

be monitored without elevating the monitoring personnel more than 2 meters 

above a support surface; 

(2) The process unit within which the valve is located is an existing 

process unit; and 

(3) The owner or operator of the valve follows a written plan that 

requires monitoring of the valve at least once per calendar year. 

(j) Any equipment located at a plant site with fewer than 250 valves in 

VHAP service is exempt from the requirements of paragraph (d)(1) of this 

section. The owner or operator shall monitor each valve in VHAP service for 

leaks once each quarter, or comply with paragraphs (d)(3) or (d)(4) of this 

section. 

(k) For use in determining monitoring frequency, as specified in 

paragraph (d) of this section, the percent leaking valves shall be calculated 

as a rolling average of 2 consecutive monitoring periods for monthly, 

21 
Draft 7/17/90 

quarterly, or semiannual monitoring programs: as an average of any 3 out of 4 

consecutive monitoring periods for annual monitoring programs. 

(1) Nonrepairable valves shall be included in the calculation of percent 

leaking valves the first time the valve is identified as leaking and 

nonrepairable and as required to comply with paragraph (k)(2). Otherwise, a 

number of nonrepairable valves up to a maximum of 1 percent of the total 

number of valves in VHAP service may be excluded from calculation of percent 

leaking valves for subsequent monitoring periods. 

(2) If the number of nonrepairable valves exceeds 1 percent of the total 

number of valves in VHAP service at a process unit, the number of 

nonrepairable valves exceeding 1 percent shall be included in the calculation 

of percent leaking valves. 

§XX.X2-8 Standards: Pumps, valves, flanges and other connectors, and 

agitator seals in heavy liquid service, and pressure relief devices in liquid 

service and flanges and other connectors. 

(a) Pumps, valves, flanges and other connectors, and agitator'seals in 

heavy liquid service, and pressure relief devices in light liquid or heavy 

liquid service and flanges and other connectors shall be monitored within 5 

calendar days by the method specified in §XX.X5(b) if evidence of a potential 

leak is found by visual, audible, olfactory, or any other detection method, 

except as provided in §XX.X2-l(c). 

(b) If an instrument reading of 10,000 ppm or greater for agitator 

seals, 1,000 ppm or greater for pumps, and 500 ppm or greater for valves, 

flanges and other connectors, and pressure relief devices is measured, a leak 

is detected. 

22 
Draft 7/17/90 

(c)(1) 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 §XX.X2-10. 

(2) The first attempt at repair shall be made no later than 5 calendar 

days after each leak is detected. 

(d) First attempts at repair include, but are not limited to, the best 

practices described under §XX.X2-7(e). 

§XX.X2-9 Standards: Product accumulator vessels. 

(a) 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 §XX.X2-11, except as provided in §XX.X2-l(c). 

§XX.X2-10 Standards: Delay of repair. 

(a) Delay of repair of equipment for which leaks have been detected w44+ 

be is 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. 

(b) Delay of repair of equipment for which leaks have been detected w44+ 

be || allowed for equipment that is isolated from the process and that does 

not remain in VHAP service. 

(c) Delay of repair for valves will be and agitator seals is also 

allowed if: 

(1) The owner or operator determines that emissions of purged material 

resulting from immediate repair are greater than the fugitive emissions likely 

to result from delay of repair, and 

23 

• H 
Draft 7/17/90 

(2) When repair procedures are effected, the purged material is 

collected and destroyed or recovered in a control device complying with 

§XX.X2-11. 

(d) Delay of repair for pumps will bo is also allowed if: 

(1) Repair requires the use of a dual mechanical seal system that 

includes a barrier fluid system, and 

(2) Repair is completed as soon as practicable, but not later than 6 

months after the leak was detected. 

(e) 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 of 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. 

§XX.X2-11 Standards: Closed-vent systems and control devices. 

(a) Owners or operators of closed-vent systems and control devices used 

to comply with provisions of this subpart shall comply with the provisions of 

this section, except as provided in §XX.X2-l(c). 

(b) 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. 

(c) Enclosed combustion devices shall be designed and operated to reduce 

the VHAP emissions vented to them with an efficiency of 95 percent or greater 

24 
P.27 

Draft 7/17/90 

or to provide a minimum residence time of 0.50 seconds at a minimum 

temperature of 760°C. 

(d) Flares used to comply with this subpart shall comply with the 

requirements of §60.18. 

(e) Owners or operators of control devices that are used to comply with 

the provisions of this subpart shall monitor these control devices to ensure 

that they are operated and maintained in conformance with their design. 

(f)(1) Closed-vent systems shall be designed for and operated with no 

detectable emissions, as indicated by an instrument reading of less than §00 

11 ppm above background and by visual inspections, as determined by the 

methods specified as §XX.X5(c). 

(2) Closed-vent systems shall be monitored to determine compliance with 

this section initially in accordance with §61.05, annually, and at other times 

requested by the Administrator. 

(3) Leaks, as indicated by an instrument reading greater than $QQ ff ppm 

above background and visual inspections, shall be repaired as soon as 

practicable, but not later than 15 calendar days after the leak is detected. 

(4) A first attempt at repair shall be made no later than 5 calendar 

days after the leak is detected. 

(g) Closed-vent systems and control devices used to comply with 

provisions of this subpart shall be operated at all times when emissions may 

be vented to them, except during periods of startup, shutdown, and malfunction 

at which times the owner or operator shall, to the extent practicable, 

maintain and operate the source in a manner consistent with good air pollution 

control practice for minimizing emissions. 

25 
P.28 

Draft 7/17/90 

§XX.X2-12 Standards? Agitator seals in gas/vapor service and in light liquid 

service* 

(a)(1) Each agitator seal shall be monitored monthly to detect leaks by 

the methods specified in §XX.X5(b), except as provided in §XX.X2-l(c). 

(2) Each agitator seal shall be checked by visual inspection each 

calendar week for indications of liquids dripping from the agitator seal. 

(b)(1) If an instrument reading of 10,000 ppm or greater is measured, a 

leak is detected. 

(2) If there are indications of liquids dripping from the agitator seal, 

a leak is detected. 

(c)(1) When a leak is detected, it shall be repaired as soon as 

practicable, but not later than 15 calendar days after it is detected. 

(2) A first attempt at repair shall be made no later than 5 calendar 

days after each leak is detected. 

§XX.X2-13 Standards: Flanges in Gas/ Vapor Service and in Light Liquid 

Service. 

(a) The owner or operator of an affected process unit shall monitor all 

flanges in VHAP service, except as provided in paragraphs (f) through (j) of 

this section, at the intervals specified in paragraph (b) of this section and 

shall comply with paragraphs (c)-(k) of this section. 

(1) The flanges shall be monitored to detect leaks by the method 

specified in SXX.XS, 

(2) If an instrument reading greater than or equal to 500 ppm is 

measured, a leak is detected. 

26 
Draft 7/17/90 

(b) The owner or operator shall monitor for leaks at the intervals: 

specified below.: 

(1) Within the first 12 months after promulgation of this subpart for 

existing process units or within the first 12 months after startup for new 

process units, the owner or operator shall monitor all flanges,except as 

provided in paragraphs (f) through (j) of this section. 

(2) After conducting the initial survey required in paragraph (b)(1) of 

this section,.the owner or operator shall perform all subsequent monitoring of 

flanges at the following frequencies: 

(i) Once per calendar year, if the percent leaking flanges in the process 

unit is 0.S percent or greater. 

(ii) Once every two calendar years, if the percent leaking flanges is 

less than 0.5 percent. An owner or operator may comply with this paragraph by 

monitoring any portion of the flanges in the first year and the remainder of 

the flanges in the second year. The percent leaking flanges will be 

calculated for the total of the two monitoring periods. 

(3) If a process unit in a biennial .le,ak detection and repair program has 

less than 0.5 percent leaking flanges at the 2 year demonstration, the owner 

or operator may monitor the flanges I time every 4 years. An owner or 

operator may comply with the requirements of this paragraph by monitoring any 

portion of the flanges each year until all flanges have be&n monitored within 

4 years. 

(4) If a process unit complying with the requirements of paragraph (b) 

using a 4 year monitoring interval program has greater than 0.5 percent but 

less than 1 percent leaking flanges, the owner or operator shall increase the 

27 
P.30 

Draft 7/17/90 

monitoring frequency to 1 time every 2 years. An owner or operator may comply 

with the requirements of this paragraph by monitoring any portion of the 

flanges in the first year and the remainder of the flanges in the second year. 

The owner or operator may again elect to use the provisions of paragraph 

(b)(3) when the percent leaking flanges decreases to less than 0.5 percent. 

(5) If a process unit complying with requirements of paragraph (b) using 

a 4 year monitoring interval program has 1 percent or greater leaking flanges, 

the owner or operator shall increase the monitoring frequency to 1 time per 

year. The owner or operator may again elect to use the provisions of 

paragraph (b)(3) when the percent leaking flanges decreases to less than 0.5 

percent* 

(c) Each flange that has been opened or has otherwise had the seal 

broken shall be monitored for leaks within 60 calendar days of being returned 

to VHAP service. 

(d) 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 paragraph (h) of this section and in §XX.X2-10. A first 

attempt at repair shall be made no later than 5 calendar days after the leak 

is detected. 

(e) If a leak is detected, the flange shall be monitored monthly after 

its repair until a leak is not detected for 2 successive months. 

(f) Any flange that is designated, as described in §XX.X6(g)(l), as an 

lisafe-to-monitor flange is exempt from the requirements of paragraph (a) if: 

28 
P.31 

Draft 7/17/90 

(1) The owner or operator determines that the flange is unsafe-tomonitor because personnel would be exposed to an immediate danger as a rlllll 

of complying with paragraphs (a) - (e); and 

(2) The owner or operator has a written plan that requires monitoring of 

the flange as frequent as practicable during safe to monitor periods. 

(g) Any flange that is designated, as described in §XX.X6(g)(2), as a 

difficult-to-monitor flange is exempt from the reguirements Of paragraph (a| 

tf; 

(1) The owner or operator determines that the flange cannot be monitored 

without elevating the monitoring personnel more than 2 meters above a support 

surface, and 

(2) The owner or operator follows a written.plan that requires 

monitoring of the flange at least once within the prescribed monitoring 

period. 

(h) Any flange that is designated, as described in §XX.X6(g)(3), as an 

unsafe-to-repair flange is exempt from the requirements of paragraphs (a), 

(d), and (e) of this section if: 

(1) The owner or operator determines that repair personnel would be 

exposed to an immediate danger as a consequence of complying with paragraph 

(d) of this section; and 

(2) The flange will be repaired before the end of the next scheduled 

shutdown of the process unit. 

(i)(l) Any. flange that is inaccessible, or is glass or glass-lined is 

exempt from the monitoring requirements of paragraph (a) of this section and 

29 
P.32 

Draft 7/17/90 

from the recordkeeping and reporting requirements of §XX.X6 and §XX.X7. An 

inaccessible flange is one that is 

(A) Buried, 

(B) Insulated, or 

(C) Obstructed by equipment or piping that prevent access to the flange 

by a monitor probe. 

(2) If any inaccessible, or glass or glass-lined flange is observed by 

visual, audible, olfactory, or other means to be leaking, the leak shall be 

repaired as soon as practicable, but no later than IS calendar days after the 

leak 1s detected, except as provided in §XX.X2-10 and paragraph (h) of this 

section. 

(3) A first attempt at repair shall be made no later than 5 calendar 

days after the leak is detected. 

(k) For use in determining the monitoring frequency, as specified in 

paragraph (b) of this section, the percent leaking flanges shall be calculif§§ 

as follows: 

(1) For the first monitoring survey, use the following equation: 

% L = ( NL/Ft) x 100 

Where 

% L = percent leaking flanges 

NL = number of flanges measured at 500 ppm or greater, by the 

method specified in §XX.X5 

Ft. = total number of monitored flanges in the process unit. 

(2) For subsequent monitoring cycles, use the following equation: 

% L - [( NL - NK )/( Ft - NN )] x. 100 

30 
Draft 7/17/90 

Where 

% L = percent leaking flanges 

NL = number of flanges measured at 500 ppm or greater, by the 

method specified in §XX.X5. 

NN - number of nonrepairable flanges no to exceed 2 percent of 

the total flange population, Ft 

Ft * total number of monitored flanges, including 

nonrepairables, in the process Unit. 

§XX.X3 1 Alternative standards for valvos in VHAP sorvico allowable 

porcentago of valvos leaking. 

(a) An owner or operator may elect to have all valvos within a process 

unit to comply with an allowable porcentago of valvos leaking of equal to or 

loss than 2.0 percent. 

(b) The following requirements shall be met if an owner or operator 

docidos to comply with an allowable porcontage of valvos leaking: 

(1) An owner or operator must notify tho Administrator that tho ownor or 

operator has elected to have all valvos within a process unit to comply with 

the allowable percentage of valves leaking before implementing this 

alternative standard, as specified in §XX.X7(d). 

(2) A performance tost as specified in paragraph (c) of this section 

shall bo conducted initially upon designation, annually, and at other times 

requested by the Administrator. 

(3) If a valve loak is detected, it shall be repaired in accordance with 

§XX.X2 7(d) and (o). 

(c) Porformanco tosts shall bo conducted in tho following manner; 

31 
Draft 7/17/90 

(1) All valves in VHAP service within tho process unit shall bo 

monitored within 1 week by tho methods spocifiod in §XX.X5(b). 

(2) If an instrument reading of 10,000 ppm or greater is measured, a 

leak is dotoctod. 

(3) Tho loak porcentago shall bo dotorminod by dividing tho numbor of 

valvos in VHAP service for which loaks are dotoctod by tho number of valvos in 

VHAP sorvico within tho process unit. 

(d) Owners or operators who elect to havo all valvos comply with this 

alternative standard shall not havo a process unit with a loak- porcentago 

greater than 2.0 percent. 

(o) If an ownor or operator docidos no longer to comply with §XX.X3 1, 

tho owner or operator must notify the Administrator in writing that tho work 

practice standard described in §XX.X2 7(a) (o) will be followed. 

§X&**-X2-2—Altornativo standards for Valvos in VHAP sorvico—Skip period loak 

detection and repair. 

(a)(1) An ownor or operator.may oloct for all valvos within a process 

unit to comply with ono of the altornativo work practices specified in 

paragraphs (b)(2) and (3) of this section. 

(2) An ownor or operator must notify tho Administrator before 

implementing one of tho alternative work practices, as specified in §XX.X7(d). 

(b)(1) An ownor or operator shall comply initially with the requirements 

for valves, as described in §XX.X2 7. 

(2) After 2 consecutive quarterly leak detection periods with tho 

percentage of valves looking equal to or loss than 2.0, an owner or operator 

32 
Draft 7/17/90 

may begin to skip 1 of tho quarterly leak dotoction periods for the valvos in 

VHAP service. 

(3) After 5 consocutivo quarterly loak dotoction periods with the 

percontago of valvos leaking oqual to or loss than 2.0, an owner or operator 

may bogin to skip 3 of tho quarterly loak dotoction periods for the valves in 

VHAP service. 

(4) If tho percentage of valves leaking io greater than 2.0, tho owner 

or operator shall comply with tho roquiromonts as described in §XX.X2 7 but 

may again oloct to use this section. 

IXX.X3 Quality improvement program. 

§XX.X4-1 Alternative means of emission limitation. 

(a) Permission to use an alternative means of emission limitation under 

section 112(e)(3) of the Clean Air Act 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 Administrator will compare test data for the means of emission 

limitation to test data for the equipment, design, and operational 

requirements. 

(3) The Administrator 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. 

33 
P.36_ 

Draft 7/17/90 

(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, for 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 Administrator will compare the demonstrated emission reduction 

for the alternative means of emission limitation to the demonstrated emission 

reduction for the required work practices and will consider the commitment in 

paragraph (c)(4). 

(6) The Administrator 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 subpart. 

(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 Administrator for permission for an alternative means of 

34 
P.37 

Draft 7/17/90 

emission limitation that achieves a reduction in emissions of the VHAP 

achieved by the equipment, design, and operational requirements of this 

subpart. 

(2) The Administrator will grant permission according to the provisions 

of paragraphs (b), (c), and (d). 

§XX.X4-2 Alternative means of emission limitation: Batch processes 

(a) An owner or operator of a batch process which has equipment in VHAP 

service may elect to either pressure test or monitor the equipment for leaks. 

The owner or operator shall comply with one of the alternative requirements 

specified in paragraphs (b) and (c) of this sectionJ 

(b) The following requirements shall be met if an owner or operator 

elects to use pressure testing of batch product process equipment to 

demonstrate compliance with this subpart. An owner or operator who complies 

with the provisions of this paragraph is exempt from the provisions of 

§XX.X2-13 through XX.X2-10, §XX.X2-12, §XX.X2-13, and §XX.X3 of this subpart. 

(1) Each time equipment is reconfigured for production of a product or 

each time the seal between any two pieces of equipment is broken, the batch 

product process equipment shall be pressure tested for leaks before VHAP is 

first fed to the equipment and the equipment is placed in VHAP service. Each 

batch product process that operates anytime during a calendar year shall be 

pressure tested at least [e.g., once] during that calendar year. 

(2) The batch product process equipment shall be tested using the 

procedures specified in §XX.X5(f). 

35 
Draft 7/17/90 

(3) If the change in pressure is greater than (e.g.. 1 psiq/hrl or 

if there is visible, audible, or olfactory evidence of fluid loss, a leak is 

de|e||ed|i 

(4) If a leak is detected, it shall be repaired and the batch productprocess equipment shall be pressure tested before VHAP is fed to the 

equipment. 

(i) Any batch product-process that fails 2 consecutive pressure tests 

shall be repaired as soon as practicable, but not later than 30 calendar days 

after the equipment is placed in VHAP service, except as provided in paragraph 

(d) of this section. 

(c) The following requirements shall be met if an owner or operator 

elects to monitor the equipment to detect leaks by the method specified in 

§XX.X5(b) to demonstrate compliance with this subpart. 

(1) The owner or operator shall comply with the requirements of 

§§XX.X2-2 to XX.X2-9, §§XX.X2-11 to XX.X2-13, and §XX.X3. 

(2) The equipment shall be monitored for leaks by the method specified 

in §XX.X5(b) when the equipment is in VHAP service, in use with an acceptable 

surrogate volatile Organic compound which is not a VHAP or is in use with any 

other detectable gas or vapor. 

(3) The equipment shall be monitored for leaks as specified below: 

(i) Each time the equipment is reconfigured for the production of a 

product and each time a seal is broken between any two pieces of equipment. 

(ii) At the frequency calculated in the following equation or times 

per year if the calculated frequency is less than times per year: 

•b ~ *<>P * ^Ofl^nyoyj i 

36 
P.39 

Draft 7/17/90 

Where 

fb - screening frequency for batch operations 

T ^ = average time equipment is in VHAP service in the 

previous year, expressed as percentage of 8760 hours 

FcorTtff>uous= monitoring frequency specified for equipment in 

continuous service, (e.g., once per 90 calendar days; 

once per 30 calendar days). 

(4) If 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 paragraph (d) of this section. 

[Mote: if the Committee allows delay of repair for batch processes, the 

following paragraph will be included.] 

(d) Delay of repair of equipment for which leaks have been detected is 

allowed if the replacement equipment is not available providing the following 

conditions are met: 

(i) Equipment supplies have been depleted and supplies have been 

sufficiently stocked before the supplies were depleted. 

(ii) The repair is made no later than 10 calendar days after delivery of 

the replacement equipment. 

§XX.X5 Test methods and procedures. 

(a) Each owner or operator subject to the provisions of this subpart 

shall comply with the test methods and procedures requirements provided in 

this section. 

(b) Monitoring, as required in §XX.X2, §XX.X3, and §XX.X4, shall comply 

with the following requirements: 

37 
P.40, 

_ 

Draft 7/17/90 

(1) Monitoring shall comply with Reference Method 21. 

(2) The detection instrument shall meet the performance criteria of 

Reference Method 21. 

(3) The instrument shall be calibrated before use on each day of its use 

by the procedures specified in Reference Method 21. 

(4) Calibration gases shall be: 

(i) Zero air (less than iQ 0.2 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 for agitator seals, 1,000 ppm 

for pumps, and 500 ppm for all other equipment or n hoxano. 

(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 §XX.X2-2(e), §XX.X2-3(i), §XX.X2-4, §XX.X2-7(f), and 

§XX.X2-ll(f), the test shall comply with the following requirements: 

(1) The requirements of paragraphs (b)(1) through (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 

38 
T 

I***—. 

P.41 

i 

Draft 7/17/90 

for agitator seals, 50 ppm for pumps, and 25 ppm for all other equipment for 

determining compliance. 

[If response factor is considered, a paragraph will be added here to describe 

how the response factor adjustment will be made.] 

(d)(1) Each piece of equipment within a process unit that can reasonably 

be expected to 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 i|| to exceed iQ 1 percent by weight during the 

calendar year. For purposes of determining the percent VHAP content of the 

process fluid that is contained in or contacts equipment, procoduros that 

conform to tho methods described in ASTM Method D 2267 (incorporated by 

roforonco as spocifiod in §61.18) ||||di fl shall be used. 

(2)(i) An owner or operator may use good engineering judgment rather 

than the procedures in paragraph (1) to determine that the percent VHAP 

content does not exceed iQ £ percent by weight, provided that tho engineering 

judgment demonstrates that tho VHAP content clearly does not exceed 10 percent 

by weight. When an owner or operator and the Administrator do not agree on 

whether a piece of equipment is not in VHAP service, however, the procedures 

in paragraph (d)(1) shall be used to resolve the disagreement. 

(ii) Conversely, the owner or operator may determine that the VHAP 

content of the process fluid does not exceed 5 percent by weight by, for 

example, accounting for 98 percent of the content and showing that VHAP is 

less than 3 percent. 

39 
P.42 

Draft 7/17/90 

(3) If an owner or operator determines that a piece of equipment is in 

VHAP service, the determination can be revised en4y after following the 

procedures in paragraph (d)(1), or by documenting that a change in the process 

or raw materials no longer causes the equipment to be in VHAP service. 

(4) 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 boing combusted in tho flaro. 

(e)(1) Roforonco Method 22 shall bo usod to dotormino compliance of 

flares with tho visible omission provisions of this subpart. 

(2) Tho prosonco of a flaro pilot flamo shall bo monitored using a 

thormocouplo or any other equivalent device to detect the prosonco of a flamo. 

(3) Tho not heating value of the gas being combusted in a flaro shall bo 

calculated using tho following equation; 

HT r, K (R3CtHt> 

whore; HT = Net heating value of tho sample, MJ/scm; where tho not 

enthalpy per mole of offgas is based on combustion at 

25°C and 760 mm Hg, but tho standard temperature for 

determining the volumo corresponding to ono molo is 20"C. 

K = Constant, 1.740 x 10- (1/ppm) (g mole/scm) (MJ/kcal), 

whore standard temperature for (g mole/scm) is 20'C 

Gt •= Concentration of samplo component i in ppm, as measured 

by Roforonco Method 18 of Appendix A of 40 CFR Part 60 

40 
V 

3 

P.43 

Draft 7/17/90 

and ASTM D2504 67 (roapprovod 1977) (incorporated by 

roforonco as spocifiod in §61.18). 

Ht •= Not heat of combustion of sample component i, kcal/g 

mole.—The heats of combustion may bo detormincd using 

ASTM D2382 76 (incorporated by reference as spocifiod in 

§61.18) if published values are not available or cannot 

bo calculated. 

(4) Tho actual exit velocity of a flaro shall bo dotorminod by dividing 

the volumetric flowrate (in units of standard tomporaturo and pressure), as 

dotorminod by Roforonco Mothod 2, 2A, 2C, or 2D, as appropriate, by the 

unobstructed (free) cross sectional area of tho flaro tip. 

(5) Tho maximum permitted velocity, V^ , for air assisted flares shall 

bo dotorminod by tho following equation; 

W - 8.76 i '0.7084(Hf> 

where: V-i-m ° Maximum permitted velocity, m/sec 

8.706 ° Constant. 

0.7084 ° Constant. 

—HT--° The net heating value as dotorminod in paragraph (e)(3) of 

this section. Reference methods used in determining compliance with flares 

are those required in §60.18. 

(f) The following procedures shall be used to pressure test batch 

product-process equipment to demonstrate compliance with the requirements of 

§XX.X4-2. 

(1) The batch product-process equipment train shall be pressurized with 

air, nitrogen or water to the operating pressure of the equipment. The 

41 

•«__H___I_)| mmftmmiimmmillllmailtlltmllliaimmjgg^^ggfg^^gj^g^^^ 
Draft 7/17/90 

equipment shall not be tested at to a pressure greater than the pressure 

setting of the lowest relief valve setting. 

(2) Once the test pressure is obtained, the air, nitrogen, or water 

source shall be shut off. 

(3) At then end of minutes [hours], the pressure in the balf! 

product-process equipment train shall be measured. The change in pressure 

shall be calculated using the following equation: 

P - Pf - Pf 

where P = change in pressure^ 

P* » final pressure 

Pi » initial pressure 

(4) The pressure shall be measured using a pressure measurement device 

(gauge, manometer, or equivalent) which has a precision of in the 

range of test pressure and is capable of measuring pressures up to the relief 

set pressure of the pressure relief device. 

(Sec. 114 of the Clean Air Act as amended (42 U.S.C. 7414).) 

§XX.X6 Recordkeeping requirements. 

[Note: Recordkeeping provisions for batch processes to be added subsequent to 

identification of batch process standards.] 

(a)(1) Each ownor or operator subject to tho provisions of this subpart 

shall comply with tho recordkooping roquiromonts of this section. 

-(-2-)- An owner or operator of more than one process unit subject to the 

provisions of this subpart may comply with the recordkeeping requirements for 

these process units in one recordkeeping system if the system identifies each 

42 
V » 

P.45 

Draft 7/17/90 

record by eeeh process unit and the program being implemented (e.g., quarterly 

monitoring, quality improvement) for each type of equipment. 

(b) [Note: Most of this paragraph was formerly paragraph (e)] Except 

as provided in paragraphs (f) and (g) of this section, the following 

information pertaining to all equipment in each process unit subject to the 

requirements in §XX.X2-1 to §XX.X2--_4|i shall be recorded in a log that is 

kept in a readily accessible location: 

(l)(i) A list of identification numbers for equipment (except connectors 

exempt from monitoring and recordkeeping identified in §XX.X__lrl3) subject to 

the requirements of this subpart and a site layout showing the relative 

location of the equipment in the process unit. 

(ii) A table listing by equipment identification number the line size, 

pressure, and stream service (i.e., light liquid, heavy liquid, or gas) of 

each item of equipment. The table shall also list the monitoring frequency 

and other provisions of this subpart that are being implemented for each item 

of equipment. 

(iii) Physical tagging of the equipment to indicate that it is in VHAP 

service is not required. Equipment subject to the provisions of this subpart 

may be identified on a plant site plan, in log entries, or by other 

appropriate methods. 

(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 loss than 500 ppm abovo background, under tho provisions 

of §§XX.X2 2(o), XX.X2 3(i), and XX.X2 7(f) as specified in the appropriate 

sections of this subpart. 

43 
Draft 7/17/90 

(ii) The designation of this equipment as subject to the roquiromonts of 

§§XX.X2 2(e), XX.X2 3(i), and XX.X2 7 no detectable emissions requirements 

shall be signed by the owner or operator. 

(3) A list of equipment identification numbers for pressure relief 

devices required to comply with §XX.X2-4(a). 

(4)(i) The dates of each compliance test required in §§XX.X2-2(e|), 

XX.X2-3(i), and XX.X2-4., and 61 242 7(f). 

(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. 

(fee) When each leak is detected as specified in §XX.X2-2, §XX.X2-3, 

§XX.X2-7, and §XX.X2-8, §XX.X2-11, §XX.X2-12, and §XX.X2-13, 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 or flange may be removed after it has 

been monitored for 2 successive months as specified in §XX.X2-7(c) and no leak 

has been detected during those 2 months. 

(3) The identification on equipment, except on a valve or flange, may be 

removed after it has been repaired. 

(e|) When each leak is detected as specified in §XX.X2-2, §XX.X2-3, 

§XX.X2-7, 1*4 §XX.X2-8, §XX.X2-11, §XX.X2-12, and §XX.X2-13, the following 

information shall be recorded in a log and shall be kept for 2 years, or as 

specified in the facility permit if longer, in a readily accessible location: 

44 
P.47 

Draft 7/17/90 

(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 moasurod by the 

methods spocifiod in §XX.X5(a) after each repair attempt is equal to or 

groator than 10,000 ppm. Maximum instrument reading measured by the method 

specified in §XX.X5(b) after it is sucessfully repaired or determined to be 

nonrepairable. 

(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. 

(e) The following information shall be recorded for each process unit 

subject to the requirements of §XX.X2-2 to §XX.X2-13: 

(1) A schedule of monitoring for valves and for flanges. 

(2) The number of leaking pumps, the total number of pumps, and the 

percent leaking pumps during each monitoring period. 

45 
Draft 7/17/90 

(3) The number of leaking valves, the total number of valves, all 

credits for removed valves, the number of nonrepairable valves, and the 

percent leaking valves during each monitoring period. 

(4) The number of leaking flanges, the total number of monitored 

flanges, all credits for removed flanges, the number of nonrepairable flanges, 

and the percent leaking flanges during each monitoring period. 

(f) The owner or operator of a batch product proces who elects to 

pressure test the batch product process equipment train to demonstrate 

compliance with this subpart is exempt from the requirements of paragraphs 

.o), (£)» (d), (i), and 1) of this section. Instead, the owner or operator 

shall maintain records of the following informaiton in a readily accessible 

location: 

(1) A list of identification numbers for each batch product process 

equipment train used to produce products during the calendar year and the area 

of the facility where the equpment train is located. 

(2) Records demonstrating the quipment is in use in a batch process 

during the calendar year. Examples of syitable documentation are records of 

time in use for individual pieces of equipment or average time in use for the 

process unit. 

(3) Physical tagging of the equipment to identifiy that it is in VH/fj 

service and subject to the provisions of this subpart is not required. 

Equipment in a batch product process subject to the provisions of this sul|||| 

may be identified on a plant site plan, in log entries, or by other 

appropriate methods. 

46 
1/ 

* 

Draft 7/17/90 

(4) The dates of each pressure test required in §XX.X4-2(b), the test 

pressure, and the pressure drop observed during the test. 

(5) Records of any visible, audible, or olfactory evidence of fluid 

loss. 

(g) When a batch product process equipment train does not pass 2 

consecutive pressure tests, the following information shall be recorded in a 

log and kept for 2 years, or for the period specified in the facility's permit 

if longer, in a readily accessible location: 

(1) The date of each pressure test and the date of each leak repair 

attempt. 

(2) Repair methods applied in each attempt to repair the leak. 

(3) The reason for the delay of repair. 

(4) The expected date for delivery of the replacement equipment iilllff 

|||ual date of delivery of the replacement equipment. 

(5) The date of successful repair. 

{S) The following information pertaining to the design requirements for 

closed-vent systems and control devices described in §XX.X2-11 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 §XX.X2-ll(e), to ensure that control devices are operated and maintained in 

47 
Draft 7/17/90 

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 

§XX.X2-2, §XX.X2-3, §XX.X2-4, §XX.X2-5, and §XX.X2-9 are not operated as 

designed, including periods when a flare pilot light does.not have a flame. 

(5) Dates of startups and shutdowns of the closed-vent systems and 

control devices required in §XX.X2-2, §XX.X2-3, §XX.X2-4, §XX.X2-5, and 

§XX.X2-9. 

(e) Tho following information pertaining to all oquipmont subject to tho 

requirements in §XX.X2 1 to §XX.X2 11 shall bo rocordod in a log that is kept 

in a roadily accessible location; 

(1) A list of identification numbers for equipment subject to tho 

roquiromonts of this subpart. 

(2)(i) A list of identification numbers for equipment that the owner or 

operator elects to designate for no detectable omissions, as indicated by an 

instrument reading of loss than 500 ppm abovo background, undor the provisions 

of §XX.X2 2(o), §XX.X2 3(i), and §XX.X2 7(f). 

(ii) Tho designation of this oquipmont as subject to tho roquiromonts of 

§XX.X2 2(o), §XX,X2 3(1), or §XX.X2 7(f) shall bo signed by tho owner or 

operator. 

(3) A list of equipment identification numbers for prossuro relief 

devices required to comply with §XX.X2 4(a). 

(4)(i) Tho dates of oaeh compliance tost required in §XX.X2 2(e), 

§XX.X2 3(i), §XX.X2 4, and §XX.X2 7(f). 

(ii) Tho background lovol moasurod during each compliance tost. 

48 
P.51 

Draft 7/17/90 

(iii) Tho maximum instrument reading measured at the equipment during 

each compliance tost. 

(5) A list of identification numbers for equipment in vacuum service. 

(•fl) The following information pertaining to all valves subject to the 

requirements of §XX.X2-7(§|) and (hi) and all flanges subject to the. 

requirements of §XX.X2-13(f), (g), and (h) shall be recorded in a log that is 

kept in a readily accessible location: 

(1) A list of identification numbers for valves and flanges that are 

designated as unsafe-to-monitor, an explanation for each valve and flange 

stating why the valve or flange is unsafe-to-monitor, and the plan for 

monitoring each valve and flange. 

(2) A list of identification numbers for valves and flanges that are 

designated as difficult-to-monitor, an explanation for each valve |n||l||||| 

stating why the valve or flange is difficult-to-monitor, and the planned 

schedule for monitoring each valve and flange. 

(3) A list of identification numbers for flanges that are designated as 

unsafe-to-repair and an explanation for each flange stating why the flange is 

unsafe-to-repair. 

(4) A list of identification numbers for flanges that are designated as 

inaccessible and an explanation for each flange stating why the flange is 

inaccessible* 

(hj) The following information shall be recorded in a log that is kept 

in a readily accessible location: 

(1) Design criterion required in §XX.X2-2(d|)(5) and §XX.X2-3(e)(2) and 

an explanation of the design criterion; and 

49 
Draft 7/17/90 

(2) Any changes to this criterion and the reasons for the changes. 

(+|) 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 subpart and other specific subparts: 

(1) An analysis demonstrating the design capacity of the processunit, 

^U__L___L 

(2) A statement listing the feed or raw materials and products from the 

process unit and an analysis demonstrating whether these chemicals are heavy 

liquids, and 

(2|) An analysis demonstrating that equipment is not in VHAP service. 

(-jl) Information and data used to determine that a piece of equipment is 

not in VHAP service shall be recorded in a log that is kept in a readily 

accessible location. 

(m) The date and duration of each process unit startup and shutdown, and 

each control device malfunction shall be recorded in a log that is kept in a 

readily accesible location. 

(n) Each owner or operator of a an affected process unit subject to the 

requirements of §XX.X3 shall amintain the following recofds for the period of 

the quality improvement program, or for the period specified in the permit for 

the affected process unit, whichever is longer: 

NOTE: tt ife assumed that there vol I be a Separate section irt the regulation that witi specify the 

speciffc criteria of an acceptable Qt program. The recordkeeping requirements given below are.preliminary 

based on discussions to date. This section is intended tc inplement the 01 program and not to specify its 

!!!*iui§|ll 

50 
0 ) The date, the instrument and operator *_.__ ••«. 

* ** « identification ^ • **'«' - —* . -

(iij Maximum instrument reading measure h_ .„ 

§xx._5(_j.

 d by the TOtl*<>d w«n - i . 

*. ^ * irjT"'the repa,r ~•""-

 in

 - ««- * 

TMP« r or ,s determined to be nonrepairable 

<1») " . ieak ,s „„t r6paired ^ ._ 

Pf the leak, the reason for the delay and th * 

fepair. * ""

 e"PeCted date •* '««„fcl 

(v) Records of materials of construction 

phasin g tolerances ._, a

 nStmt, °n ' ""«ft««r.r, manufacturing 0| 

trances, and any quality assurance procedures u«_ • _ > 

-tallation or operation of the component ""^ ^ 

[Note: The next Z paragraphs wil, be elaborated on after the 01 

*"- . i.e.. what kinds of analyses would be "" " '* 

•"

 es wou1(i be appropriate.] 

(J) Evaluations of component parameters _..„.,_ 

or maintenanc. oroora_. _. • ' "^'""

 pr8ct,c « 

programs assocated with significantly greater 

Ancles , „K,ch may include ana,yses of trends or associati b t 

— t service. line ,essure> ^ ^ ,. J ~ ^ 

• « " « W variables and leak fluency ' " ""' '"' 

51 
Draft 7/17/90 

(4)(i) Results .of bench scale and field evaluations of low emission 

performance technology including assessment of applicability, maintenance 

needed to ensure low emission performance, and specifications necessary for 

quality control of purchased equipment. These evaluations shall include a 

list of equipment specifications, design criteria, etc., that are candidates 

of performance trial evaluation. 

(ii) Evaluations of operating practices and maintenance programs needed 

to assure continued low emission performance, which may include analyses of 

trends or associations between equipment service, line pressure, materials of 

construction, line size, and other relevant variables and leak frequency. The 

records shall include the data used to assess the effect of operating 

practices and maintenance on the emission performance of equipment. 

(5) Schedule and plan for performance trials of low emission potential 

equipment. 

(6)(i) A schedule and plan for installation of low emission equipment in 

the process unit subject tothe requirements in §XX.X3. 

(ii) Where equipment is not replaced by superior equipment, the owner or 

operator must certify the reasons that use of low emission performance 

equipment is not technically feasible. 

(7) Records indicating that all equipment purchased during the period of 

the quality improvement program is in compliance with the quality assurance 

requirements in §XX.X3( ). ( 

(8) Documentation of operating practices, maintenance programs, and 

personnel training that will be used to achieve low emission performance. 

52 
Draft 7/17/90 

(9) Information and data to show the company has fewer than 

employees, including employees providing contracted services, and is a small 

business. 

(o) The provisions of §61.14(f) do not apply to process units subject to 

this subpart. 

(Sec. 114 of the Clean Air Act as amended (42 U.S.C. 7414).) 

(Approved by the Office of Management and Budget under control number 

•) 

§XX.X7 Reporting requirements. 

(a)(1) An owner or operator of any pioco of oquipmont to which this 

subpart applies a process unit subject to the provisions of this subpart shall 

submit a statement in writing 11 notifying the Administrator that the 

roquiromonts of §XX.X2, XX.X5, XX.X6, and XX.X7 aro boing which of tho 

roquiromonts will bo implemented. 

(2) In the case of an existing source process unit or a new source 

process unit which has an initial startup date preceding the effective date, 

the statement is to be submitted within 90 calendar days of the effective 

date, unless a waiver of compliance is granted under §61.11, along with the 

information required under §61.10. If a waiver of compliance is granted, the 

statement is to be submitted on a date scheduled by the Administrator. 

(3) In the case of new sources process units which did not have an 

initial startup date preceding the effective date, the statement shall be 

submitted with the application for approval, of construction, as described in 

§61.07. 

53 
I. < • w 

Draft 7/17/90 

(4) The statement is to contain the following information for each 

source process unit, except as provided in paragraph (b)(5) of this section: 

(i) Equipment identification number and process unit identification. 

(ii) Typo of oquipmont (for example, a pump or pipeline valvo). 

(iii) Percent by weight VHAP in tho fluid at tho oquipmont. 

(iv) Process fluid stato at tho equipment (gas/vapor or liquid). Number 

of each equipment type (e.g., valves, pumps) excluding equipment designated 

for no detectable emissions under the provisions of §XX.X2-2 and those in 

vacuum service, 

(viii) Method of compliance with the standard (for example, "monthly 

leak detection and repair" or "equipped with dual mechanical seals"). 

(iv) Planned schedule for each phase of the requirements of this 

subpart* 

(5) The statement is to contain the following enformation for each 

process unit subject to the requirements in §XX.X4-2(b): 

(i) Batch product process equipment train identification, and 

(ii) Planned schedule for pressure testing the batch product process 

equipment train. 

(b) Except as provided in paragraph (c) of this section, a report shall 

be submitted to the Administrator semiannually starting 6 months after the 

initial report required in paragraph (a) of this section, that includes the 

following information: 

(1) Process unit identification, frequency of monitoring, and specific 

provisions of this subpart being implemented. 

54 
P.57 

_• . • # 

Draft 7/17/90 

(2) For each month monitoring period during the semiannual reporting 

period, 

(i) The number of valves for which leaks were detected, as described in 

§XX.X2 7(b) or §XX.X3 2. the percent leakers, and the total number of valves 

tested; 

(ii) The number of valves for which leaks were not repaired as required 

in . 

(iii) The number of pumps for which leaks were detected as described in 

(iv) The number of pumps for which leaks were not repaired as required 

in ' . 

(v) The number of compressors for which leaks were detected as described 

in §XX.X2-3(f). 

(vi) The number of compressors for which leaks were not repaired as 

required in §XX.X2-3(g). 

(vii) The number of flanges for which leaks were detected, the percent 

of flanges leaking, and the total number of flanges tested. 

(viii) The number of flanges for which leaks were not repaired as 

required in . 

(ix) The number of agitator seals for which leaks were detected as 

described in . 

(x) The number of agitator seals for which leaks were not repaired as 

required in . 

(vi4||) The facts that explain any delay of repairs and, where 

appropriate, why a process unit shutdown was technically infeasible. 

55 
Draft 7/17/90 

Notes Aft -asso-ais format for reporting the fnformatfon to paragraph (b> above ia given in Appefj$$li!i| 

(3) Dates of process unit shutdowns which occurred within the 

semiannual reporting period. 

(4) Revisions to items reported according to paragraph (a) i f changes 

have occurred since the initia l report or subsequent revisions to the initia l 

report. 

Note: Compliance with the requirements of 561.10(c) is not required for revisions documented under 

this paragraph. 

(5) The results of all performance tests to determine compliance with 

§XX.X2-2(e), §XX.X2-3(i), §XX.X2-4(a), §XX.X2 7(f), §XX.X2-ll(f), §XX.X3-1, 

and §XX.X3-2 conducted within the semiannual reporting period. 

(c) For owners or operators electing to meet the requirements of §XX.X4-

2(b), a report shall be submitted to the Administrator semiannually starting 6 

months after the initial report required in paragraph (a) of this section. 

The semiannual report shall include the following information: 

(1) Batch product process equipment train identification, 

(2) The number of pressure tests conducted, 

(3) The number of pressure tests where the equipment train failed the 

pressure test, 

(4) The facts that explain any delay of repairs, and 

(5) The results of all performance tests to determine compliance with 

§XX.X2-U(f). 

(c) In tho first report submitted as required in paragraph (a) of this 

section, the report shall include a reporting schedule stating tho months that 

56 
0". . 

\ 

Draft 7/17/90 

semiannual reports shall bo submitted.—Subsequent reports shall bo submitted 

according to that schodulo, unless a revised schodulo has boon submitted in a 

previous semiannual report. 

(d) An ownor or operator electing to comply with tho provisions of 

§XX.X3 1 and §XX.X2 2 shall notify tho Administrator of tho alternative 

standard soloctod 00 calendar days before implomonting either of the 

provisions. 

(el) An application for approval of construction or modification, 

§61.05(a) and §61.07, will not be required if 

(1) The new source process unit complies with the applicable standard in 

§XX.X2 or §XX.X4-2; 

(2) Tho now source is not part of tho construction of a process unit; 

and 

(3|) In the next semiannual report required by paragraph (b) of this 

section, the information in paragraph (a)(4) of this section is reported. 

•(e) An owner or operator of a process unit that does not achieve (Phase 

III percent leaker standard for valves) shall notify the Administrator 

within 30 calendar days of initiating the monthly monitoring program under 

or a quality improvement program under . 

(f) If acceptable to both the Administrator and the owner or operator of 

the process unit, the reports may be submitted on electronic media. 

(Sec. 114 of the Clean Air Act as amended (42 U.S.C. 7414).) 

(Approved by the Office of Management and Budget under control number .) 

57