40 C.F.R. §§ 63.7925–63.7928

4 sections in range

§63.7925. What emissions limitations and work practice standards must I meet for closed vent systems and control devices?

40 C.F.R. § 63.7925

(a)

For each closed-vent system and control device you use to comply with requirements in §§ 63.7890 through 63.7922, as applicable to your affected sources, you must meet the emissions limitations and work practice standards in this section.

(b)

You must comply with paragraph (b)(2) of this section, and paragraph (b)(1) of this section does not apply, if your initial startup date is after September 3, 2019. If your initial startup date was on or before September 3, 2019, you must comply with paragraph (b)(1) or (2) of this section until January 7, 2021, and after that date, you must comply with paragraph (b)(2) of this section, and paragraph (b)(1) of this section does not apply.

(1)

Whenever gases or vapors containing HAP are vented through the closed-vent system to the control device, the control device must be operating except at those times listed in either paragraph (b)(1)(i) or (ii) of this section.

(i)

The control device may be bypassed for the purpose of performing planned routine maintenance of the closed-vent system or control device in situations when the routine maintenance cannot be performed during periods that the emission point vented to the control device is shutdown. On an annual basis, the total time that the closed-vent system or control device is bypassed to perform routine maintenance must not exceed 240 hours per each calendar year.

(ii)

The control device may be bypassed for the purpose of correcting a malfunction of the closed-vent system or control device. You must perform the adjustments or repairs necessary to correct the malfunction as soon as practicable after the malfunction is detected.

(2)

Whenever gases or vapors containing HAP are vented through the closed-vent system to the control device, the control device must be operating, except that the control device on a tank may be bypassed for the purpose of performing planned routine maintenance of the control device. When the tank control device is bypassed, the owner or operator must comply with paragraphs (b)(2)(i) through (iii) of this section.

(i)

The control device may only be bypassed when the planned routine maintenance cannot be performed during periods that tank emissions are vented to the control device.

(ii)

On an annual basis, the total time that the closed-vent system or control device is bypassed to perform routine maintenance must not exceed 240 hours per each calendar year.

(iii)

The level of material in the tank must not be increased during periods that the closed-vent system or control device is bypassed to perform planned routine maintenance.

(c)

For each closed vent system, you must meet the work practice standards in § 63.693(c).

(d)

For each control device other than a flare or a control device used to comply with the facility-wide process vent emission limits in § 63.7890(b), you must control HAP emissions to meet either of the emissions limits in paragraphs (d)(1) or (2) of this section except as provided for in paragraph (f) of this section.

(1)

Reduce emissions of total HAP listed in Table 1 of this subpart or TOC (minus methane and ethane) from each control device by 95 percent by weight; or

(2)

Limit the concentration of total HAP listed in Table 1 of this subpart or TOC (minus methane and ethane) from each combustion control device (a thermal incinerator, catalytic incinerator, boiler, or process heater) to 20 ppmv or less on a dry basis corrected to 3 percent oxygen.

(e)

If you use a flare for your control device, then you must meet the requirements for flares in § 63.11(b).

(f)

If you use a process heater or boiler for your control device, then as alternative to meeting the emissions limits in paragraph (d) of this section you may choose to comply with one of the work practice standards in paragraphs (f)(1) through (3) of this section.

(1)

Introduce the vent stream into the flame zone of the boiler or process heater and maintain the conditions in the combustion chamber at a residence time of 0.5 seconds or longer and at a temperature of 760 °C or higher; or

(2)

Introduce the vent stream with the fuel that provides the predominate heat input to the boiler or process heater (i.e., the primary fuel); or

(3)

Introduce the vent stream to a boiler or process heater for which you either have been issued a final permit under 40 CFR part 270 and complies with the requirements of 40 CFR part 266, subpart H—Hazardous Waste Burned in Boilers and Industrial Furnaces; or has certified compliance with the interim status requirements of 40 CFR part 266, subpart H.

(g)

For each control device other than a flare, you must meet each operating limit in paragraphs (g)(1) through (6) of this section that applies to your control device.

(1)

If you use a regenerable carbon adsorption system, you must:

(i)

Maintain the hourly average total regeneration stream mass flow during the adsorption bed regeneration cycle greater than or equal to the stream mass flow established in the design evaluation or performance test.

(ii)

Maintain the hourly average temperature of the adsorption bed during regeneration (except during the cooling cycle) greater than or equal to the temperature established during the design evaluation or performance test.

(iii)

Maintain the hourly average temperature of the adsorption bed after regeneration (and within 15 minutes after completing any cooling cycle) less than or equal to the temperature established during the design evaluation.

(iv)

Maintain the frequency of regeneration greater than or equal to the frequency established during the design evaluation.

(2)

If you use a nonregenerable carbon adsorption system, you must maintain the hourly average temperature of the adsorption bed less than or equal to the temperature established during the design evaluation or performance test.

(3)

If you use a condenser, you must maintain the daily average condenser exit temperature less than or equal to the temperature established during the design evaluation or performance test.

(4)

If you use a thermal incinerator, you must maintain the daily average firebox temperature greater than or equal to the temperature established in the design evaluation or during the performance test.

(5)

If you use a catalytic incinerator, you must maintain the daily average temperature difference across the catalyst bed greater than or equal to the minimum temperature difference established during the performance test or design evaluation.

(6)

If you use a boiler or process heater to comply with an emission limit in paragraph (d) of this section, you must maintain the daily average firebox temperature within the operating level established during the design evaluation or performance test.

(h)

If you use a carbon adsorption system as your control, you must meet each work practice standard in paragraphs (h)(1) through (3) of this section that applies to your control device.

(1)

If you use a regenerable carbon adsorption system, you must:

(i)

Replace the existing adsorbent in each segment of the bed with an adsorbent that meets the replacement specifications established during the design evaluation before the age of the adsorbent exceeds the maximum allowable age established during the design evaluation.

(ii)

Follow the disposal requirements for spent carbon in § 63.693(d)(4).

(2)

If you use a nonregenerable carbon adsorption system, you must:

(i)

(ii)

Meet the disposal requirements for spent carbon in § 63.693(d)(4)(ii).

(3)

If you use a nonregenerative carbon adsorption system, you may choose to comply with the requirements in paragraphs (h)(3)(i) and (ii) of this section as an alternative to the requirements in paragraph (h)(2) of this section. You must:

(i)

Immediately replace the carbon canister or carbon in the control device when the monitoring device indicates breakthrough has occurred according to the requirements in § 63.693(d)(4)(iii)(A), or replace the carbon canister or carbon in the control device at regular intervals according to the requirements in § 63.693(d)(4)(iii)(B).

(ii)

Follow the disposal requirements for spent carbon in § 63.693(d)(4)(ii).

(i)

If you use a catalytic incinerator, you must replace the existing catalyst bed with a bed that meets the replacement specifications before the age of the bed exceeds the maximum allowable age established in the design evaluation or during the performance test.

(j)

As provided in § 63.6(g), you may request approval from the EPA to use an alternative to the work practice standards in this section that apply to your closed vent systems and control devices. If you request for permission to use an alternative to the work practice standards, you must submit the information described in § 63.6(g)(2).

Notes, amendments, and revision history

Amendments

[68 FR 58190, Oct. 8, 2003, as amended at 85 FR 41706, July 10, 2020]

Source

Source: 68 FR 58190, Oct. 8, 2003, unless otherwise noted.

Authority

Authority: 42 U.S.C. 7401 et seq.

Source

Source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.

Amendments

[68 FR 58190, Oct. 8, 2003, as amended at 85 FR 41706, July 10, 2020]

§63.7926. How do I demonstrate initial compliance with the emission limitations and work practice standards for closed vent systems and control devices?

40 C.F.R. § 63.7926

(a)

You must demonstrate initial compliance with the emissions limitations and work practice standards in this subpart applicable to your closed vent system and control device by meeting the requirements in paragraphs (b) through (h) of this section that apply to your closed vent system and control device.

(b)

You must demonstrate initial compliance with the closed vent system work practice standards in § 63.7925(c) if you have submitted as part of your notification of compliance status, specified in § 63.7950, a signed statement that you have met the requirements in paragraphs (b)(1) and (2) of this section.

(1)

You have installed a closed vent system that meets the requirements in § 63.695(c)(1) and (2), and you have records documenting the equipment design and installation.

(2)

You have performed the initial inspection of the closed vent system according to the requirements in § 63.695(c)(1)(i) or (ii), and you have records documenting the inspection results.

(c)

You must demonstrate initial compliance of each control device subject to the emissions limits in § 63.7925(d) with the applicable emissions limit in § 63.7925(d) if you have submitted as part of your notification of compliance status, specified in § 63.7950, a signed statement that you have met the requirements in paragraphs (c)(1) and (2) of this section that apply to you.

(1)

For the emissions limit in § 63.7925(d)(1), the emissions of total HAP listed in Table 1 of this subpart or TOC (minus methane and ethane) from the control device, measured or determined according to the procedures for performance tests and design evaluations in § 63.7941, are reduced by at least 95 percent by weight.

(2)

For the emissions limit in § 63.7925(d)(2), the concentration of total HAP listed in Table 1 of this subpart or TOC (minus methane and ethane) from the combustion control device, measured by a performance test or determined by a design evaluation according to the procedures in § 63.7941, do not exceed 20 ppmv on a dry basis corrected to 3 percent oxygen.

(d)

You must demonstrate initial compliance of each control device subject to operating limits in § 63.7925(g) with the applicable limits if you have submitted as part of your notification of compliance status, specified in § 63.7950, a signed statement that you have met the requirements in paragraphs (d)(1) and (2) of this section.

(1)

You have established an appropriate operating limit(s) for each of the operating parameter applicable to your control device as specified in § 63.7925(g)(1) through (6).

(2)

You have a record of the applicable operating parameter data during the performance test or design evaluation during which the emissions met the applicable limit.

(e)

You must demonstrate initial compliance with the spent carbon replacement and disposal work practice standards for carbon adsorption systems in § 63.7925(h) if you have submitted as part of your notification of compliance status, specified in § 63.7950, a signed statement that you will comply with each work practice standard that applies to your carbon adsorption system.

(f)

You must demonstrate initial compliance with the catalyst replacement work practice standards for catalytic incinerators in § 63.7925(i) if you have submitted as part of your notification of compliance status, specified in § 63.7950, a signed statement that you will comply with the specified work practice standard.

(g)

You must demonstrate initial compliance of each flare with the work practice standards in § 63.7925(e) if you have submitted as part of your notification of compliance status, specified in § 63.7950, a signed statement that you have met the requirements in paragraphs (g)(1) through (3) of this section.

(1)

Each flare meets the requirements in § 63.11(b).

(2)

You have performed a visible emissions test, determined the net heating value of gas being combusted, and determined the flare exit velocity as required in § 63.693(h)(2).

(3)

You will operate each flare according to the requirements in § 63.11(b).

(h)

You must demonstrate initial compliance of each boiler or process heater with the work practice standards in § 63.7925(f) if you have submitted as part of your notification of compliance status, specified in § 63.7950, a signed statement that you have met the requirements in paragraphs (h)(1) through (3) of this section.

(1)

For the work practice standards in § 63.7925(f)(1), you have records documenting that the boiler or process heater is designed to operate at a residence time of 0.5 seconds or greater and maintain the combustion zone temperature at 760 °C or greater.

(2)

For the work practice standard in § 63.7925(f)(2), you have records documenting that the vent stream is introduced with the fuel according to the requirements in § 63.693(g)(1)(iv), or that the vent stream is introduced to a boiler or process heater that meets the requirements in § 63.693(g)(1)(v).

(3)

For the work practice standard in § 63.7925(f)(3), you have records documenting you either have been issued a final permit under 40 CFR part 270 and your boiler or process heater complies with the requirements of 40 CFR part 266, subpart H—Hazardous Waste Burned in Boilers and Industrial Furnaces; or has been certified in compliance with the interim status requirements of 40 CFR part 266, subpart H.

Notes, amendments, and revision history

Source

Source: 68 FR 58190, Oct. 8, 2003, unless otherwise noted.

Authority

Authority: 42 U.S.C. 7401 et seq.

Source

Source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.

§63.7927. What are my inspection and monitoring requirements for closed vent systems and control devices?

40 C.F.R. § 63.7927

(a)

You must comply with the requirements in paragraphs (a)(1) and (2) of this section for each closed vent system.

(1)

You must monitor and inspect each closed vent system according to the requirements in either paragraph (a)(1)(i) or (ii) of this section.

(i)

You must monitor, inspect, and repair defects according to the requirements in § 63.695(c)(1)(ii) through (c)(3); or

(ii)

You must monitor and inspect the closed vent system according to the requirements in § 63.172(f) through (j) and record the information in § 63.181.

(2)

If your closed vent system includes a bypass device, you must meet the requirements in either paragraph (a)(2)(i) or (ii) of this section.

(i)

Use a flow indicator to determine if the presence of flow according to the requirements in § 63.693(c)(2)(i); or

(ii)

Use a seal or locking device and make monthly inspections as required by § 63.693(c)(2)(ii).

(b)

If you use a regenerable carbon adsorption system, you must meet the requirements in paragraphs (b)(1) through (3) of this section.

(1)

Use a continuous parameter monitoring system (CPMS) to measure and record the hourly average total regeneration stream mass flow during each carbon adsorption cycle.

(2)

Use a CPMS to measure and record the hourly average temperature of the adsorption bed during regeneration (except during the cooling cycle).

(3)

Use a CPMS to measure and record the hourly average temperature of the adsorption bed after regeneration (and within 15 minutes after completing any cooling cycle).

(c)

If you use a nonregenerable carbon adsorption system, you must use a CPMS to measure and record the hourly average temperature of the adsorption bed or you must monitor the concentration of organic compounds in the exhaust vent stream according to the requirements in § 63.693(d)(4)(iii)(A).

(d)

If you use a condenser, you must use a CPMS to measure and record the hourly average condenser exit temperature and determine and record the daily average condenser exit temperature.

(e)

If you use a thermal incinerator, you must use a CPMS to measure and record the hourly average firebox temperature and determine and record the daily average firebox temperature.

(f)

If you use a catalytic incinerator, you must use a CPMS with two temperature sensors to measure and record the hourly average temperature at the inlet of the catalyst bed, the hourly average temperature at the outlet of the catalyst bed, the hourly average temperature difference across the catalyst bed, and to determine and record the daily average temperature difference across the catalyst bed.

(g)

If you use a boiler or process heater to meet an emission limitation, you must use a CPMS to measure and record the hourly average firebox temperature and determine and record the daily average firebox temperature.

(h)

If you use a flare, you must monitor the operation of the flare using a heat sensing monitoring device according to the requirements in § 63.693(h)(3).

(i)

If you introduce the vent stream into the flame zone of a boiler or process heater according to the requirements in § 63.7925(f)(1), you must use a CPMS to measure and record the combustion zone temperature.

Notes, amendments, and revision history

Amendments

[68 FR 58190, Oct. 8, 2003, as amended at 71 FR 69018, Nov. 29, 2006]

Source

Source: 68 FR 58190, Oct. 8, 2003, unless otherwise noted.

Authority

Authority: 42 U.S.C. 7401 et seq.

Source

Source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.

Amendments

[68 FR 58190, Oct. 8, 2003, as amended at 71 FR 69018, Nov. 29, 2006]

§63.7928. How do I demonstrate continuous compliance with the emissions limitations and work practice standards for closed vent systems and control devices?

40 C.F.R. § 63.7928

(a)

You must demonstrate continuous compliance with the emissions limitations and work practice standards in this subpart applicable to your closed vent system and control device by meeting the requirements in paragraphs (b) through (j) of this section as applicable to your closed vent system and control device.

(b)

You must demonstrate continuous compliance with the closed vent system work practice standards in § 63.7925(c) by meeting the requirements in paragraphs (b)(1) through (7) of this section.

(1)

For a closed vent system designed to operate with no detectable organic emissions, visually inspecting the closed vent system at least annually, monitoring after a repair or replacement using the procedures in § 63.694(k), and monitoring at least annually according to the requirements in § 63.695(c)(1)(ii).

(2)

For a closed vent system designed to operate below atmospheric pressure, visually inspecting the closed vent system at least annually according to the requirements in § 63.695(c)(2)(ii).

(3)

Repairing defects according to the requirements in § 63.695(c)(3).

(4)

Keeping records of each inspection that include the information in paragraphs (b)(4)(i) through (iii) of this section:

(i)

A closed vent system identification number (or other unique identification description you select).

(ii)

Date of each inspection.

(iii)

If a defect is detected during an inspection, the location of the defect, a description of the defect, the date of detection, the corrective action taken to repair the defect, and if repair is delayed, the reason for any delay and the date completion of the repair is expected.

(5)

If you elect to monitor the closed vent system according to the requirements in § 63.172(f) through (j), recording the information in § 63.181.

(6)

If the closed vent system is equipped with a flow indicator, recording the information in § 63.693(c)(2)(i).

(7)

If the closed vent system is equipped with a seal or locking device, visually inspecting the seal or closure mechanism at least monthly according to the requirements in § 63.693(c)(2)(ii), and recording the results of each inspection.

(c)

You must demonstrate continuous compliance of each control device subject to the emissions limits in § 63.7925(d) with the applicable emissions limit in § 63.7925(d) by meeting the requirements in paragraph (c)(1) or (2) of this section.

(1)

For the emission limit in § 63.7925(d)(1), maintaining the reduction in emissions of total HAP listed in Table 1 of this subpart or TOC (minus methane and ethane) from the control device at 95 percent by weight or greater.

(2)

For the emission limit in § 63.7925(d)(2), maintaining the concentration of total HAP listed in Table 1 of this subpart or TOC (minus methane and ethane) from the control device at 20 ppmv or less.

(d)

You must demonstrate continuous compliance of each control device subject to operating limits in § 63.7925(g) with the applicable limits by meeting the requirements in paragraphs (d)(1) through (4) of this section.

(1)

Maintaining each operating limit according to the requirements in § 63.7925(g) as applicable to the control device.

(2)

Monitoring and inspecting each control device according to the requirements in § 63.7927(b) through (i) as applicable to the control device.

(3)

Operating and maintaining each continuous monitoring system according to the requirements in § 63.7945, and collecting and reducing data according to the requirements in § 63.7946.

(4)

Keeping records to document compliance with the requirements of this subpart according to the requirements in § 63.7952.

(e)

You must demonstrate continuous compliance with the spent carbon replacement and disposal work practice standards for regenerable carbon adsorption systems in § 63.7925(h)(1) by meeting the requirements in paragraphs (e)(1) through (3) of this section.

(1)

Replacing the adsorbent as required by § 63.7925(h)(1)(i).

(2)

Following the disposal requirements for spent carbon in § 63.693(d)(4)(ii).

(3)

Keeping records to document compliance with the requirements of the work practice standards.

(f)

You must demonstrate continuous compliance with the spent carbon replacement and disposal work practice standards for nonregenerable carbon adsorption systems in § 63.7925(h)(2) by meeting the requirements in paragraphs (f)(1) through (3) of this section.

(1)

Replacing the adsorbent as required by the work practice standard in § 63.7925(h)(2)(i).

(2)

Following the disposal requirements for spent carbon in § 63.693(d)(4)(ii).

(3)

Keeping records to document compliance with the requirements of the work practice standards.

(g)

You must demonstrate continuous compliance with the spent carbon replacement and disposal work practice standards for nonregenerable carbon adsorption systems in § 63.7925(h)(3) by meeting the requirements in paragraphs (g)(1) through (3) of this section.

(1)

Monitoring the concentration level of the organic compounds in the exhaust vent for the carbon adsorption system as required in § 63.7927(c), immediately replacing the carbon canister or carbon in the control device when breakthrough is indicated by the monitoring device, and recording the date of breakthrough and carbon replacement. Or, you must replace the carbon canister or carbon in the control device at regular intervals and record the date of carbon replacement.

(2)

Following the disposal requirements for spent carbon in § 63.693(d)(4)(ii).

(3)

Keeping records to document compliance with the requirements of the work practice standards.

(h)

You must demonstrate continuous compliance with the catalyst replacement work practice standards for catalytic incinerators in § 63.7925(i) by meeting the requirements in paragraphs (h)(1) and (2) of this section.

(1)

Replacing the existing catalyst bed as required in § 63.7925(i).

(2)

Keeping records to document compliance with the requirements of the work practice standards.

(i)

You must demonstrate continuous compliance of each flare with the work practice standards in § 63.7925(e) by meeting the requirements in paragraphs (i)(1) through (5) of this section.

(1)

Operating the flare with no visible emissions except for up to 5 minutes in any 2 consecutive hours according to the requirements in § 63.11(b)(4).

(2)

Monitoring the presence of a pilot flare according to the requirements in § 63.7927(h) and maintaining a pilot flame and flare flame at all times that emissions are not vented to the flare according to the requirements in § 63.11(b)(5).

(3)

Operating the flare with an exit velocity according to the requirements in § 63.11(b)(6) through (8).

(4)

Operating the flare with a net heating value of the gas being combusted according to the requirements in § 63.11(b)(6)(ii).

(5)

Keeping records to document compliance with the requirements of the work practice standards.

(j)

You must demonstrate continuous compliance of each boiler or process heater with the work practice standards in § 63.7925(f) by meeting the requirements in paragraphs (j)(1) through (3) of this section.

(1)

For the work practice standards in § 63.7925(f)(1), you must demonstrate continuous compliance by meeting the requirements in paragraphs (j)(1)(i) through (iv).

(i)

Maintaining conditions in the combustion chamber at a residence time of 0.5 seconds or longer and at a combustion zone temperature at 760 °C or greater whenever the vent stream is introduced to the flame zone of the boiler or process heater.

(ii)

Monitoring each boiler or process heater according to the requirements in § 63.7927(i).

(iii)

Operating and maintaining each continuous monitoring system according to the requirements in § 63.7945, and collecting and reducing data according to the requirements in § 63.7946.

(iv)

Keeping records to document compliance with residence time design requirement.

(2)

For the work practice standards in § 63.7925(f)(2), you maintain the boiler or process heater operations such that the vent stream is introduced with the fuel according to the requirements in § 63.693(g)(1)(iv), or that the vent stream is introduced to a boiler or process heater that meets the requirements in § 63.693(g)(1)(v).

(3)

For the work practice standard in § 63.7925(f)(3), you remain in compliance with all terms and conditions of the final permit under 40 CFR part 270 and your boiler or process heater complies with the requirements of 40 CFR part 266, subpart H—Hazardous Waste Burned in Boilers and Industrial Furnaces; or in compliance with the interim status requirements of 40 CFR part 266, subpart H, as applicable to your boiler or process heater.

Notes, amendments, and revision history

Amendments

[68 FR 58190, Oct. 8, 2003, as amended at 71 FR 69018, Nov. 29, 2006]

Source

Source: 68 FR 58190, Oct. 8, 2003, unless otherwise noted.

Authority

Authority: 42 U.S.C. 7401 et seq.

Source

Source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.

Amendments

[68 FR 58190, Oct. 8, 2003, as amended at 71 FR 69018, Nov. 29, 2006]

40 C.F.R. §§ 63.7925–63.7928

§63.7925. What emissions limitations and work practice standards must I meet for closed vent systems and control devices?

Amendments

Source

Authority

Source

Amendments

§63.7926. How do I demonstrate initial compliance with the emission limitations and work practice standards for closed vent systems and control devices?

Source

Authority

Source

§63.7927. What are my inspection and monitoring requirements for closed vent systems and control devices?

Amendments

Source

Authority

Source

Amendments

§63.7928. How do I demonstrate continuous compliance with the emissions limitations and work practice standards for closed vent systems and control devices?

Amendments

Source

Authority

Source

Amendments

Cite this provision

Incoming references