1. (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 500 ppm above background, as measured by the method specified in Section 66264.1063(c).

   1. (2) No later than 24 hours after the pressure release, the pressure relief device shall be monitored to confirm the condition of no detectable emissions, as indicated by an instrument reading of less than 500 ppm above background, as measured by the method specified in Section 66264.1063(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 500 ppm above background, as soon as practicable, but no later than 24 hours after each pressure release, except as provided in Section 66264.1059.

2. (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 Section 66264.1060 is exempt from the requirements of subsections (a) and (b) of this section.

Note: Authority cited: Sections 25150 and 25159, Health and Safety Code. Reference: Sections 25159 and 25159.5, Health and Safety Code; 40 CFR section 264.1054.

History

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