Section 33-24-05-431 - Alternative standards for valves in gas or vapor service or light liquid service -Percentage of valves allowed to leak1. An owner or operator subject to the requirements of section 33-24-05-427 may elect to have all valves within a hazardous waste management unit comply with an alternative standard that allows no greater than two percent of the valves to leak.2. The following requirements must be met if an owner or operator decides to comply with the alternative standard of allowing two percent of valves to leak: a. A performance test as specified in subsection 3 must be conducted initially upon designation, annually, and at other times requested by the department.b. If a valve leak is detected, it must be repaired in accordance with subsections 4 and 5 of section 33-24-05-427.3. Performance tests must be conducted in the following manner: a. All valves subject to requirements in section 33-24-05-427 within the hazardous waste management unit shall be monitored within one week by the methods specified in subsection 2 of section 33-24-05-433.b. If an instrument reading of ten thousand parts per million or greater is measured, a leak is detected.c. The leak percentage must be determined by dividing the number of valves subject to the requirements in section 33-24-05-427 for which leaks are detected by the total number of valves subject to the requirements in section 33-24-05-427 within the hazardous waste management unit.N.D. Admin Code 33-24-05-431
Effective December 1, 1991.Amended by Administrative Rules Supplement 2016-359, January 2016, effective 1/1/2016.General Authority: NDCC 23-20.3-03
Law Implemented: NDCC 23-20.3-03, 23-20.3-04