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UL 132
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UL 132 8th Edition, January 12, 2018 UL Standard for Safety Relief Valves for Anhydrous Ammonia and LP-Gas
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Description / Abstract:
These requirements cover pressure and safety relief valves and hydrostatic relief valves for anhydrous ammonia and liquefied petroleum gas (LP-Gas) for use on containers built in accordance with ASME Pressure Vessel Code, Section VIII, Division 1 in nonrefrigerated systems in facilities covered by the following standards:
a) Requirements for the Storage and Handling of Anhydrous Ammonia, ( ANSI K61.1), ANSI/ CGA G-2.1.
b) Liquefied Petroleum Gas Code, NFPA 58.
c) Utility LP-Gas Plant Code, NFPA 59.
These requirements do not apply to relief valves for use on cylinders constructed in accordance with Department of Transportation (DOT) specifications.
The suitability of an accessory in combination with a relief valve shall be judged under the applicable requirements of this standard and NFPA 59.
a) Requirements for the Storage and Handling of Anhydrous Ammonia, ( ANSI K61.1), ANSI/ CGA G-2.1.
b) Liquefied Petroleum Gas Code, NFPA 58.
c) Utility LP-Gas Plant Code, NFPA 59.
These requirements do not apply to relief valves for use on cylinders constructed in accordance with Department of Transportation (DOT) specifications.
The suitability of an accessory in combination with a relief valve shall be judged under the applicable requirements of this standard and NFPA 59.