Wisconsin Administrative Code
Department of Natural Resources
NR 600-699 - Environmental Protection - Hazardous Waste Management
Chapter NR 661 - Hazardous Waste Identification And Listing
Subchapter BB - Air Emission Standards for Equipment Leaks
Section NR 661.1053 - Standards: compressors

Universal Citation: WI Admin Code ยง NR 661.1053

Current through August 26, 2024

(1) Each compressor shall be equipped with a seal system that includes a barrier fluid system and that prevents leakage of total organic emissions to the atmosphere, except as provided in subs. (8) and (9).

(2) Each compressor seal system as required under sub. (1) shall meet one of the following conditions:

(a) Operate with the barrier fluid at a pressure that is at all times greater than the compressor stuffing box pressure.

(b) Be equipped with a barrier fluid system that is connected by a closed-vent system to a control device that complies with the requirements specified in s. NR 661.1060.

(c) Be equipped with a system that purges the barrier fluid into a hazardous secondary material stream with no detectable emissions to atmosphere.

(3) The barrier fluid may not be a hazardous secondary material with organic concentrations 10 percent or greater by weight.

(4) Each barrier fluid system as described in subs. (1) to (3) shall be equipped with a sensor that will detect failure of the seal system, barrier fluid system, or both.

(5)

(a) Each sensor as required in sub. (4) shall be checked by the remanufacturer or other person daily or shall be equipped with an audible alarm that shall be checked monthly to ensure that it is functioning properly unless the compressor is located within the boundary of an unmanned plant site, in which case the sensor shall be checked daily.

(b) 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.

(6) If the sensor indicates failure of the seal system, the barrier fluid system, or both based on the criterion determined under sub. (5) (b), a leak is detected.

(7)

(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 under s. NR 661.1059.

(b) A first attempt at repair, such as tightening the packing gland, shall be made no later than 5 calendar days after each leak is detected.

(8) A compressor is exempt from the requirements under subs. (1) and (2) if it is equipped with a closed-vent system capable of capturing and transporting any leakage from the seal to a control device that complies with the requirements specified in s. NR 661.1060, except as provided in sub. (9).

(9) Any compressor 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 subs. (1) to (8) if the compressor meets all of the following requirements:

(a) Is determined to be operating with no detectable emissions, as indicated by an instrument reading of less than 500 ppm above background, as measured by the method specified in s. NR 661.1063(3).

(b) Is tested for compliance with par. (a) initially upon designation, annually, and at other times as requested by the department.

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