Wisconsin Administrative Code
Department of Natural Resources
NR 600-699 - Environmental Protection - Hazardous Waste Management
Chapter NR 664 - Hazardous Waste Treatment, Storage And Disposal Facility Standards
Subchapter BB - Air Emission Standards for Equipment Leaks
Section NR 664.1052 - Standards: pumps in light liquid service

Universal Citation: WI Admin Code § NR 664.1052

Current through August 26, 2024

(1)

(a) Monitor each pump in light liquid service monthly to detect leaks by the methods specified in s. NR 664.1063(2), except as provided in subs. (4) to (6).

(b) Check each pump in light liquid service by visual inspection each calendar week for indications of liquids dripping from the pump seal.

(2)

(a) If an instrument reading of 10,000 ppm 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)

(a) When a leak is detected, repair it as soon as practicable, but not later than 15 calendar days after it is detected, except as provided in s. NR 664.1059.

(b) Make a first attempt at repair (e.g., tightening the packing gland) no later than 5 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 sub. (1), provided all of the following requirements are met:

(a) Each dual mechanical seal system shall be one of the following:

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 s. NR 664.1060.

3. Equipped with a system that purges the barrier fluid into a hazardous waste stream with no detectable emissions to the atmosphere.

(b) The barrier fluid system may not be a hazardous waste with organic concentrations 10% or greater by weight.

(c) Equip each barrier fluid system with a sensor that will detect failure of the seal system, the barrier fluid system or both.

(d) Check each pump by visual inspection, each calendar week, for indications of liquids dripping from the pump seals.

(e)

1. Check each sensor as described in par. (c) daily, or equip it with an audible alarm and check the alarm monthly to ensure that it is functioning properly.

2. Determine, based on design considerations and operating experience, a criterion that indicates failure of the seal system, the barrier fluid system or both.

(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 par. (e) 2., a leak is detected.

2. When a leak is detected, repair it as soon as practicable, but not later than 15 calendar days after it is detected, except as provided in s. NR 664.1059.

3. Make a first attempt at repair (e.g., relapping the seal) no later than 5 calendar days after each leak is detected.

(5) Any pump that is designated, as described in s. NR 664.1064(7) (b), for no detectable emissions, as indicated by an instrument reading of less than 500 ppm above background, is exempt from subs. (1), (3) and (4) if the pump meets all of the following requirements:

(a) It has no externally actuated shaft penetrating the pump housing.

(b) It operates with no detectable emissions as indicated by an instrument reading of less than 500 ppm above background measured by the methods specified in s. NR 664.1063(3).

(c) It is tested for compliance with par. (b) initially upon designation, annually and at other times 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 s. NR 664.1060, it is exempt from subs. (1) to (5).

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