Current through August 26, 2024
(1)
Each valve in gas or vapor or light liquid service shall be monitored monthly
to detect leaks by the methods specified in s. NR 661.1063(2) and shall comply
with subs. (2) to (5), except as provided in subs. (6) to (8) and ss. NR 661.1061 and 661.1062.
(2) If an
instrument reading of 10,000 ppm or greater is measured, a leak is
detected.
(3)
(a) Any valve for which a leak is not
detected for 2 successive months may be monitored the first month of every
succeeding quarter, beginning with the next quarter, until a leak is
detected.
(b) If a leak is
detected, the valve shall be monitored monthly until a leak is not detected for
2 successive months.
(4)
(a) When a leak is detected, it shall be
repaired as soon as practicable, but no later than 15 calendar days after the
leak is detected, except as provided in s. NR 661.1059.
(b) A first attempt at repair shall be made
no later than 5 calendar days after each leak is detected.
(5) First attempts at repair include the
following best practices where practicable:
(a) Tightening of bonnet bolts.
(b) Replacement of bonnet bolts.
(c) Tightening of packing gland
nuts.
(d) Injection of lubricant
into lubricated packing.
(6) Any valve that is designated, as
described in s. NR 661.1064(7) (b), for no detectable emissions, as indicated
by an instrument reading of less than 500 ppm above background, is exempt from
the requirements under sub. (1) if the valve meets all of the following
requirements:
(a) Has no external actuating
mechanism in contact with the hazardous secondary material stream.
(b) Is operated with emissions less than 500
ppm above background as determined by the method specified in s. NR 661.1063(3).
(c) Is tested for
compliance with par. (b) initially upon designation, annually, and at other
times as requested by the department.
(7) Any valve that is designated, as
described in s. NR 661.1064(8) (a), as an unsafe-to-monitor valve is exempt
from the requirements under sub. (1) if all of the following requirements are
met:
(a) The remanufacturer or other person
that stores or treats the hazardous secondary material determines that the
valve is unsafe to monitor because monitoring personnel would be exposed to an
immediate danger as a consequence of complying with sub. (1).
(b) The remanufacturer or other person that
stores or treats the hazardous secondary material adheres to a written plan
that requires monitoring of the valve as frequently as practicable during
safe-to-monitor times.
(8) Any valve that is designated, as
described in s. NR 661.1064(8) (b), as a difficult-to-monitor valve is exempt
from the requirements under sub. (1) if all of the following requirements are
met:
(a) The remanufacturer or other person
that stores or treats the hazardous secondary material determines that the
valve cannot be monitored without elevating the monitoring personnel more than
2 meters above a support surface.
(b) The hazardous secondary material
management unit within which the valve is located was in operation before
January 13, 2015.
(c) The owner or
operator of the valve follows a written plan that requires monitoring of the
valve at least once per calendar year.
