§ 66264.1033. Standards: Closed-Vent Systems and Control Devices.

(a)(1) Owners or operators of closed-vent systems and control devices used to comply with provisions of this chapter shall comply with the provisions of this section.

(2) The owner or operator of an existing facility who cannot install a closed-vent system and control device to comply with the provisions of this article on the effective date that the facility becomes subject to the provisions of this article shall prepare an implementation schedule that includes dates by which the closed-vent system and control device will be installed and in operation. The controls shall be installed as soon as possible, but the implementation schedule may allow up to 18 months of installation and start-up time after the effective date that the facility becomes subject to this article. All units that begin operation after the dates indicated below shall comply with the rules immediately (i.e., shall have control devices installed and operating on start-up of the affected unit):

(A) December 21, 1990 for units that transfer, treat, store, or dispose of RCRA hazardous wastes, unless the owner/operator of the unit is exempt from regulation under 40 CFR, Section 264.1;

(B) Six months after the effective date of these regulations for units that transfer, treat, store, or dispose of RCRA hazardous wastes, if the owner/operator of the unit is exempt from regulation under 40 CFR, Section 264.1 but not exempt from regulation under Section 66264.1.

(b) A control device involving vapor recovery (e.g., a condenser or absorber) shall be designed and operated to recover the organic vapors vented to it with an efficiency of 95 weight percent or greater unless the total organic emission limits of Section 66264.1032(a)(1) for all affected process vents can be attained at an efficiency less than 95 weight percent.

(c) An enclosed combustion device (e.g., a vapor incinerator, boiler, or process heater) shall be designed and operated to reducethe organic emissions vented by it by 95 weight percent or greater;to achieve a total organic compound concentration of 20 ppmv, expressed as the sum of the actual compounds, not carbon equivalents, on a dry basis corrected to 3 percent oxygen; or to provide a minimum residence time of 0.50 seconds at a minimum temperature of 760 degrees C. If a boiler or process heater is used as the control device, then the vent stream shall be introduced into the flame zone of the boiler or process heater.

(d)(1) A flare shall be designed for and operated with no visible emissions as determined by the methods specified in subsection (e)(1) of this section, except for periods not to exceed a total of five minutes during any two consecutive hours.

(2) A flare shall be operated with a flame present at all times, as determined by the methods specified in subsection (f)(2)(C) of this section.

(3) A flare shall be used only if the net heating value of the gas being combusted is 11.2 MJ/scm (300 Btu/scf) or greater if the flare is steam-assisted or air-assisted; or if the net heating value of the gas being combusted is 7.45 MJ/scm (200 Btu/scf) or greater if the flare is non-assisted. The net heating value of the gas being combusted shall be determined by the methods specified in subsection (e)(2) of this section.

(4)(A) A steam-assisted or non-assisted flare shall be designed for and operated with an exit velocity, as determined by the methods specified in subsection (e)(3) of this section, less than 18.3 m/s (60 ft/s), except as provided in subsections (B) and (C) of this section.

(B) A steam-assisted or non-assisted flare designed for and operated with an exit velocity, as determined by the method specified in subsection (e)(3) of this section, equal to or greater than 18.3 m/s (60 ft/s) but less than 122 m/s (400 ft/s) is allowed if the net heating value of the gas being combusted is greater than 37.3 MJ/scm (1,000 Btu/scf).

(C) A steam-assisted or non-assisted flare designed for and operated with an exit velocity, as determined by the methods specified in subsection (e)(3) of this section, less than the velocity, V _max as determined by the method specified in subsection (e)(4) of this section and less than 122 m/s (400 ft/s) is allowed.

(5) An air-assisted flare shall be designed and operated with an exit velocity less than the velocity, V _max, as determined by the method specifiec in subsection (e)(5) of this section.

(6) A flare used to comply with this section shall be steam-assisted, air-assisted, or non-assisted.

(e)(1) Reference Method 22 in 40 CFR, Part 60, incorporated by reference in Section 66260.11 of this chapter, shall be used to determine the compliance of a flare with the visible emission provisions of this article. The observation period is two hours and shall be used according to Method 22.

(2) The net heating value of the gas being combusted in a flare shall be calculated using the following equation:

n

H_t =K[ S C_i H_i ]

i=1

where:

H_t = Net heating value of the sample, MJ/scm; where the net enthalpy per mole of off gas is based on combustion at 25 degress C and 760 mm Hg, but the standard temperature for determining the volume corresponding to 1 mol is 20 degress C;

K = Constant, 1.74 x 10 -7 (1/ppm) (g mol/scm) (MJ/kcal) where standard temperature for (g mol/scm) is 20 degrees C;

C_i = Concentration of sample component i in ppm on a wet basis, as measured for organics by Reference Method 18 in 40 CFR, Part 60 and measured for hydrogen and carbon monoxide by ASTM D 1946-82 (incorporated by reference as specified in Section 66260.11); and

H_i = Net heat combustion of sample component i, kcal/g mol at 25 degrees C and 760 mm Hg. The heats of combustion may be determined using ASTM D 2382-83 (incorporated by reference as specified in Section 66260.11) if published values are not available or cannot be calculated.

(3) The actual exit velocity of a flare shall be determined by dividing the volumetric flow rate (in units of standard temperature and pressure), as determined by Reference Methods 2, 2A, 2C, or 2D in 40 CFR, Part 60 as appropriate, by the unobstructed (free) cross-sectional area of the flare tip.

(4) The maximum allowed velocity in m/s, V _max, for a flare complying with subsection (d)(4)(C) of this section shall be determined by the following equation:

Log₁₀ (V_max ) = (H_T +28.8)/31.7

where:

28.8 = Constant,

31.7 = Constant,

H_T = The net heating value as determined in subsection (e)(2) of this section.

(5) The maximum allowed velocity in m/s, V MAX, for an air-assisted flare shall be determined by the following equation:

V_max = 8.706 + 0.7084 (H_T)

where:

8.076 = Constant,

0.7084 = Constant,

H_T = The net heating value as determined in subsection (e)(2) of this section.

(f) The owner or operator shall monitor and inspect each control device required to comply with this section to ensure proper operation and maintenance of the control device by implementing the following requirements:

(1) install, calibrate, maintain, and operate according to the manufacturer's specifications a flow indicator that provides a record of vent stream flow from each affected process vent to the control device at least once every hour. The flow indicator sensor shall be installed in the vent stream at the nearest feasible point to the control device inlet but before the point at which the vent streams are combined; and

(2) install, calibrate, maintain, and operate according to the manufacturer's specifications a device to continuously monitor control device operation as specified below:

(A) for a thermal vapor incinerator, a temperature monitoring device equipped with a continuous recorder. The device shall have an accuracy of +/- 1 percent of the temperature being monitored in degrees C or +/- 0.5 degrees C, whichever is greater. The temperature sensor shall be installed at a location in the combustion chamber downstream of the combustion zone;

(B) for a catalytic vapor incinerator, a temperature monitoring device equipped with a continuous recorder. The device shall be capable of monitoring temperature at two locations and have an accuracy of +/- 1 percent of the temperature being monitored in degrees C or +/- 0.5 degrees C, whichever is greater. One temperature sensor shall be installed in the vent stream at the nearest feasible point to the catalyst bed inlet and a second temperature sensor shall be installed in the vent stream at the nearest feasible point to the catalyst bed outlet;

(C) for a flare, a heat sensing monitoring device equipped with a continuous recorder that indicates the continuous ignition of the pilot flame;

(D) for a boiler or process heater having a design heat input capacity less than 44 MW, a temperature monitoring device equipped with a continuous recorder. The device shall have an accuracy of +/- 1 percent of the temperature being monitored in degrees C or +/- 0.5 degrees C, whichever is greater. The temperature sensor shall be installed at a location in the furnace downstream of the combustion zone;

(E) for a boiler or process heater having a design heat input capacity greater than or equal to 44 MW, a monitoring device equipped with a continuous recorder to measure a parameter(s) that indicates good combustion operating practices are being used; and

(F) for a condenser, either:

1. a monitoring device equipped with a continuous recorder to measure the concentration level of the organic compounds in the exhaust vent system from the condenser; or

2. a temperature monitoring device equipped with a continuous recorder. The device shall be capable of monitoring temperature at two locations and have an accuracy of +/- 1 percent of the temperature being monitored in degrees C or +/- 0.5 degrees C, whichever is greater. One temperature sensor shall be installed at a location in the exhaust vent stream from the condenser, and a second temperature sensor shall be installed at a location in the coolant fluid exiting the condenser; and

(G) for a carbon adsorption system that regenerates the carbon bed directly in the control device such as a fixed-bed carbon adsorber, either:

1. a monitoring device equipped with a continuous recorder to measure the concentration level of the organic compounds in the exhaust vent system from the carbon bed; or

2. a monitoring device equipped with a continuous recorder to measure a parameter that indicates the carbon bed is regenerated on a regular, predetermined time cycle; and

(3) inspect the readings from each monitoring device required by subsection (f)(1) and (2) of this section at least once each operating day to check control device operation and, if necessary, immediately implement the corrective measures necessary to ensure the control device operates in compliance with the requirements of this section.

(g) An owner or operator using a carbon adsorption system such as a fixed-bed carbon adsorber that regenerates the carbon bed directly on-site in the control device shall replace the existing carbon in the control device with fresh carbon at a regular, pre-determined time interval that is no longer than the carbon service life established as a requirement of Section 66264.1035(b)(4)(C)6.

(h) An owner or operator using a carbon adsorption system such as a carbon canister that does not regenerate the carbon bed directly on-site in the control device shall replace the existing carbon in the control device with fresh carbon on a regular basis by using one of the following procedures:

(1) monitor the concentration level of the organic compounds in the exhaust vent stream from the carbon adsorption system on a regular schedule, and replace the existing carbon with fresh carbon immediately when carbon breakthrough is indicated. The monitoring frequency shall be daily or at an interval no greater than 20 percent of the time required to consume the total carbon working capacity established as a requirement of Section 66264.1035(b)(4)(C)7, whichever is longer; or

(2) replace the existing carbon with fresh carbon at a regular, predetermined time interval that is less than the design carbon replacement interval established as a requirement of Section 66264.1035(b)(4)(C)7.

(i) An alternative operational or process parameter may be monitored if it can be demonstrated that another parameter will ensure that the control device is operated in conformance with these standards and the control device's design specifications.

(j) An owner or operator of an affected facility seeking to comply with the provisions of this chapter by using a control device other than a thermal vapor incinerator, catalytic vapor incinerator, flare, boiler, process heater, condenser, or carbon adsorption system is required to develop documentation including sufficient information to describe the control device operation and identify the process parameter or parameters that indicate proper operation and maintenance of the control device.

(k)(1) Closed-vent systems shall be designed for and operated with no detectable emissions, as indicated by an instrument reading of less than 500 ppm above background and by visual inspections, as determined by the methods specified as Section 66264.1034(b).

(2) Closed-vent systems shall be monitored to determine compliance with this section during the initial leak detection monitoring, which shall be conducted by the date that the facility becomes subject to the provisions of this section, annually, and at other times as requested by the Department.

(3) Detectable emissions, as indicated by an instrument reading greater than 500 ppm and visual inspections, shall be controlled as soon as practicable, but not later than 15 calendar days after the emission is detected.

(4) A first attempt at repair shall be made as soon as possible, to minimize escape of hazardous constituent to environment, but no later than 24 hours after the emission is detected.

(l) Closed-vent systems and control devices used to comply with provisions of this article shall be operated at all times when emissions may be vented to them.

HISTORY

1. New section filed 12-23-92; operative 1-22-93 (Register 93, No. 2).

2. Change without regulatory effect amending subsections (c), (e)(2) and (k)(4) filed 12-28-95 pursuant to section 100, title 1, California Code of Regulations (Register 95, No. 52).

3. Change without regulatory effect amending section and Note filed 6-11-99 pursuant to Health and Safety Code section 25159.1 (Register 99, No. 24).

Note

Note: Authority cited: Sections 25150, 25159, 25159.5, 25245 and 50812, Health and Safety Code. Reference: Sections 25150, 25159 and 25159.5, Health and Safety Code; 40 CFR section 264.1033.