NR 440.62(3)(b)2.a.a. If an instrument reading of 10,000 ppm or greater is measured a leak is detected. NR 440.62(3)(b)2.b.b. If there are indications of liquids dripping from the pump seal a leak is detected. NR 440.62(3)(b)3.a.a. When a leak is detected it shall be repaired as soon as practicable but not later than 15 calendar days after it is detected, except as provided in par. (i). NR 440.62(3)(b)3.b.b. A first attempt at repair shall be made no later than 5 calendar days after each leak is detected. NR 440.62(3)(b)4.4. Each pump equipped with a dual mechanical seal system that includes a barrier fluid system is exempt from the requirements of subd. 1. provided the following requirements are met: 1) Operated with the barrier fluid at a pressure that is at all times greater than the pump stuffing box pressure.
2) Equipment with a barrier fluid degassing reservoir that is routed to a process or fuel gas system or connected by a closed vent system to a control device that complies with the requirements of par. (j).
3) Equipped with a system that purges the barrier fluid into a process stream with zero VOC emissions to the atmosphere.
NR 440.62(3)(b)4.b.b. The barrier fluid system is in heavy liquid service or is not in VOC service. NR 440.62(3)(b)4.c.c. Each barrier fluid system is equipped with a sensor that will detect failure of the seal system, the barrier fluid system, or both. NR 440.62(3)(b)4.d.d. Each pump is checked by visual inspection each calendar week for indications of liquids dripping from the pump seals. NR 440.62(3)(b)4.e.e. 1) Each sensor as described in subd. 4. c. is checked daily or is equipped with an audible alarm, and 2) The owner or operator determines, based on design considerations and operating experience, a criterion that indicates failure of the seal system, the barrier fluid system, or both.
NR 440.62(3)(b)4.f.f. 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 subd. 4. e. 2) a leak is detected. 2) When a leak is detected it shall be repaired as soon as practicable but no later than 15 calendar days after it is detected, except as provided in par. (i).
3) A first attempt at repair shall be made no later than 5 calendar days after each leak is detected.
NR 440.62(3)(b)5.5. Any pump that is designated as described in sub. (7) (e) 1. and 2. for no detectable emission, as indicated by an instrument reading of less than 500 ppm above background, is exempt from the requirements of subds. 1., 3. and 4. if the pump: NR 440.62(3)(b)5.b.b. Is demonstrated to be operating with no detectable emissions as indicated by an instrument reading of less than 500 ppm above ground as measured by the methods specified in sub. (6) (c), and NR 440.62(3)(b)5.c.c. Is tested for compliance with sub. (6) (e) 2. initially upon designation, annually and at other times requested by the department. NR 440.62(3)(b)6.6. If any pump is equipped with a closed vent system capable of capturing and transporting any leakage from the seal or seals to a process or to a fuel gas system or to a control device that complies with the requirements of par. (j), it is exempt from the requirements of subds. 1. to 5. NR 440.62(3)(b)7.7. Any pump that is designated, as described in sub. (7) (f) 1., as an unsafe-to-monitor pump is exempt from the monitoring and inspection requirements of subds. 1. and 4. d. to f. if the owner or operator of the pump does all of the following: NR 440.62(3)(b)7.a.a. Demonstrates that the pump is unsafe-to-monitor because monitoring personnel would be exposed to an immediate danger as a consequence of complying with subd. 1. NR 440.62(3)(b)7.b.b. Has a written plan that requires monitoring of the pump as frequently as practicable during safe-to-monitor times but not more frequently than the periodic monitoring schedule otherwise applicable, and repairs the equipment according to the procedures in subd. 3. if a leak is detected. NR 440.62(3)(b)8.8. Any pump that is located within the boundary of an unmanned plant site is exempt from the weekly visual inspection requirement of subds. 1. b. and 4. d. and the daily requirements of subd. 4. e. provided that each pump is visually inspected as often as practicable and at least monthly.