Wisconsin Administrative Code
Department of Natural Resources
NR 600-699 - Environmental Protection - Hazardous Waste Management
Chapter NR 661 - Hazardous Waste Identification And Listing
Subchapter BB - Air Emission Standards for Equipment Leaks
Section NR 661.1054 - Standards: pressure relief devices in gas/vapor service
Universal Citation: WI Admin Code ยง NR 661.1054
Current through August 26, 2024
(1) Except during pressure releases, each pressure relief device in gas or 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 s. NR 661.1063(3).
(2)
(a) After each pressure release, the pressure
relief device shall be returned to a condition of no detectable emissions, as
indicated by an instrument reading of less than 500 ppm above background, as
soon as practicable, but no later than 5 calendar days after each pressure
release, except as provided in s. NR 661.1059.
(b) No later than 5 calendar days after the
pressure release, the pressure relief device shall be monitored to confirm the
condition of no detectable emissions, as indicated by an instrument reading of
less than 500 ppm above background, as measured by the method specified in s.
NR 661.1063(3).
(3) Any pressure relief device that is equipped with a closed-vent system capable of capturing and transporting leakage from the pressure relief device to a control device as described in s. NR 661.1060 is exempt from the requirements under subs. (1) and (2).
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