Current through Supplement No. 394, October, 2024
1. Timeframe.
a. Each pump in light liquid service must be
monitored monthly to detect leaks by the methods specified in subsection 2 of
section 33.1-24-02-193, except as
provided in subsections 4, 5, and 6.
b. Each pump in light liquid service must be
checked by visual inspection each calendar week for indications of liquids
dripping from the pump seal.
2. Indicators.
a. If an instrument reading of ten thousand
parts per million or greater is measured, a leak is detected.
b. If there are indications of liquids
dripping from the pump seal, a leak is detected.
3. Response.
a. When a leak is detected, it must be
repaired as soon as practicable, but not later than fifteen calendar days after
it is detected, except as provided in section
33.1-24-02-189.
b. A first attempt at repair (for example,
tightening the packing gland) must be made no later than five calendar days
after each leak is detected.
4. Each pump equipped with a dual mechanical
seal system that includes a barrier fluid system is exempt from the
requirements of subsection 1, provided the following requirements are met:
a. Each dual mechanical seal system must be:
(1) Operated with the barrier fluid at a
pressure that is at all times greater than the pump stuffing box
pressure;
(2) Equipped with a
barrier fluid degassing reservoir that is connected by a closed-vent system to
a control device that complies with the requirements of section
33.1-24-02-190; or
(3) Equipped with a system that purges the
barrier fluid into a hazardous secondary material stream with no detectable
emissions to the atmosphere.
b. The barrier fluid system must not be a
hazardous secondary material with organic concentrations ten percent or greater
by weight.
c. Each barrier fluid
system must be equipped with a sensor that will detect failure of the seal
system, the barrier fluid system, or both.
d. Each pump must be checked by visual
inspection, each calendar week, for indications of liquids dripping from the
pump seals.
e. Checks.
(1) Each sensor as described in subdivision c
of subsection 4 must be checked daily or be equipped with an audible alarm that
must be checked monthly to ensure that it is functioning properly.
(2) The remanufacturer or other person that
stores or treats the hazardous secondary material shall determine, based on
design considerations and operating experience, a criterion that indicates
failure of the seal system, the barrier fluid system, or both.
f. Leaks.
(1) If there are indications of liquids
dripping from the pump seal or the sensor indicates failure of the seal system,
the barrier fluid system, or both based on the criterion determined in
paragraph 2 of subdivision e of subsection 4, a leak is detected.
(2) When a leak is detected, it must be
repaired as soon as practicable, but not later than fifteen calendar days after
it is detected, except as provided in section
33.1-24-02-189.
(3) A first attempt at repair (for example,
relapping the seal) must be made no later than five calendar days after each
leak is detected.
5. Any pump that is designated, as described
in subdivision b of subsection 7 of section
33.1-24-02-194, for no
detectable emissions, as indicated by an instrument reading of less than five
hundred parts per million above background, is exempt from the requirements of
subsections 1, 3, and 4 if the pump meets the following requirements:
a. Must have no externally actuated shaft
penetrating the pump housing.
b.
Must operate with no detectable emissions as indicated by an instrument reading
of less than five hundred parts per million above background as measured by the
methods specified in subsection 3 of section
33.1-24-02-193.
c. Must be tested for compliance with
subdivision b initially upon designation, annually, and at other times as
requested by the department.
6. If any pump is equipped with a closed-vent
system capable of capturing and transporting any leakage from the seal or seals
to a control device that complies with the requirements of section
33.1-24-02-190, it is exempt
from the requirements of subsections 1 through 5.
General Authority: NDCC 23.1-04-03; S.L. 2017,
ch. 199, § 1
Law Implemented: NDCC 23.1-04-03, 23.1-04-05;
S.L. 2017, ch. 199, § 19
