NFPA 59: Utility LP-Gas Plant Code
Current Edition: 2015 Next Edition: 2018

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What is NFPA 59?
NFPA 59: Document Scope

1.1 Scope. 1.1.1* This code shall apply to the design, construction, location, installation, operation, and maintenance of refrigerated and nonrefrigerated utility gas plants. Coverage of liquefied petroleum gas systems at utility gas plants shall extend to the point where LP-Gas or a mixture of LP-Gas and air is introduced into the utility distribution system. A.1.1.1 Those portions of LP-Gas systems downstream of the point where LP-Gas or a mixture of LP-Gas and air is introduced into the utility distribution system are covered in the United States by the U.S. Department of Transportation, 49 CFR 192, “Pipeline Safety Law.”(See Figure A.1.1.1.) 1.1.2 When operations that involve the liquid transfer of LP-Gas from the utility gas plant storage into cylinders or portable tanks (as defined by NFPA 58, Liquefied Petroleum Gas Code) are carried out in the utility gas plant, these operations shall conform to NFPA 58, Liquefied Petroleum Gas Code. 1.1.3 Installations that have an aggregate water capacity of 4000 gal (15.14 m3) or less shall conform to NFPA58, Liquefied Petroleum Gas Code.

This code provides safety requirements for the design, construction, location, installation, operation, and maintenance of refrigerated and non-refrigerated utility gas plants. Official document scope
What does NFPA 59 address?
Coverage of liquefied petroleum gas systems at utility gas plants shall extend to the point where LP-Gas or a mixture of LP-Gas and air is introduced into the utility distribution system. Specific topics include refrigerated and non-refrigerated containers; piping, valves, and equipment; buildings or structures housing LP-Gas distribution facilities; vaporizers, heat exchangers, and gas-air mixers; relief devices; operations; maintenance; and fire protection, safety, and security.

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