S.C. Code Regs. 61-79.261.BB.1054 - 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 five
hundred (500) ppm above background, as measured by the method specified in
section 261.1063(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 five hundred (500) ppm above
background, as soon as practicable, but no later than five (5) calendar days
after each pressure release, except as provided in section 261.1059.
(2) No later than five (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 five hundred (500) ppm above background, as measured by
the method specified in section 261.1063(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
section 261.1060 is exempt from the requirements of paragraphs (a) and (b) of
this section.
Notes
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