1、NFPA59 Utility LP-Gas Plant Code 2015 Edition NFPA, 1 Batterymarch Park, Quincy, MA 02169-7471 An International Codes and Standards Organization 1/14ISBN: 978-145590892-9 (Print)ISBN: 978-145590925-4 (PDF)IMPORTANT NOTICES AND DISCLAIMERS CONCERNING NFPASTANDARDS NOTICE AND DISCLAIMER OF LIABILITY C
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29、pa.org/freeaccess.Copyright 2014 National Fire Protection Association. All Rights Reserved.NFPA59Utility LP-Gas Plant Code2015 EditionThis edition of NFPA 59, Utility LP-Gas Plant Code, was prepared by the Technical Commit-tee on LP-Gases at Utility Gas Plants. It was issued by the Standards Council
30、 on July 14, 2014,with an effective date of July 29, 2014, and supersedes all previous editions.This edition of NFPA 59 was approved as an American National Standard on July 29, 2014.Origin and Development of NFPA 59NFPA 58, Standard on Liquefied Petroleum Gases, was applied to utility gas plants to
31、 the degree itcovered them until NFPA 59 was adopted in 1949. Subsequent editions were adopted in 1954,1956, 1958, 1962, 1963, 1968, 1974, 1976, 1979, 1984, 1989, 1992, 1995, 1998, 2001, and 2004.The first edition of NFPA 59 resulted from the formation of a special committee under thesponsorship of
32、the American Gas Association (AGA), which was made up of utility engineers,specialists in gas plant construction, and engineers in the liquefied petroleum gas industry.The standard was initially the result of the AGA Committees acting in an advisory capacity tothe Sectional Committee on Utility Gas
33、of the NFPA Committee on Gases.With the formation in 1966 of the Committee on Fuel Gases, NFPA 59 was assigned to thatcommittee and then to a new Subcommittee on Utility Gas Plants. In 1972, responsibility forNFPA 59 was reassigned to the Committee on Liquefied Petroleum Gases, which retained theSub
34、committee on Utility Gas Plants.In 1992, the subcommittee was discharged, and NFPA 59 was assigned to the TechnicalCommittee on LP-Gases at Utility Gas Plants. The committee maintains correlation withNFPA 58 by overlapping committee membership and concurrent or joint meetings.Changes in the 2004 edi
35、tion included reorganization of the document to conform to theManual of Style for NFPATechnical Committee Documents.For the 2008 edition, the committee expanded extracts from NFPA 58 where the coveragewas similar to provide users of NFPA 59 a more complete document. Many requirements ofthe code were
36、 clarified, and the organization of the document was simplified.For the 2012 edition, a new section on corrosion protection was added that largely ex-tracted existing requirements from 49 CFR 193. Those requirements were included inNFPA 59 to increase awareness of corrosion control requirements and
37、to align requirementsamong similar types of gas process facilities. The committee also added a new section ontraining of personnel engaged in the maintenance or operation of propaneair mixingequipment. In addition, the 2012 edition included a new section on construction and modi-fication records tha
38、t required operators to maintain records of the materials of constructionfor process equipment piping systems containing LP-Gas and other flammable fluids, includ-ing their supporting system and foundations for plants that are built or modified after theeffective date of the 2012 edition. The requir
39、ements for separation distances for containersless than 2000 gal (7.6 m3) were extracted from NFPA 58 because more plants covered underthe scope of NFPA 59 are using these smaller containers. The requirement for vent stacks onnonrefrigerated aboveground containers was removed because studies showed
40、that the dis-persion of discharged vapor was not a safety issue.In the 2015 edition, the scope in 1.1.1 has been clarified to identify the demarcation betweenNFPA 59 and applicable pipeline regulations published by the Department of Transportation(DOT). Building ventilation requirements in Chapter 8
41、 have been expanded to specify the pur-pose and activation of the ventilation system. In addition, Chapter 9 has been restructured forclarity and a new subsection created to consolidate requirements for gas-fired vaporizers. Thesizing method for nonrefrigerated container relief devices in Section 10
42、.2 has been modified forpropane storage over 300 psi and butane storage over 250 psi to provide more accurate sizing forhigher pressure and butane containment.591NFPA and National Fire Protection Association are registered trademarks of the National Fire Protection Association, Quincy, Massachusetts
43、 02169.Finally, the corrosion protection requirements in Section 12.3 have been expanded to reflect current DOT regula-tions and common practices. The requirements for Chapter 12 are retroactive to all facilities, and a schedule forretroactivity of corrosion control requirements is given in 12.3.8.T
44、he members of Utility LP-Gas Plant Code Technical Committee as well as Technical Committee members of theLiquefied Natural Gas Standard (NFPA 59A) and the LP-Gas Code (NFPA 58) dedicate the 2015 edition of thestandard in memory of our friend and colleague James H. Stannard, Jr. who passed December 1
45、0, 2012. Through histechnical ability, leadership, and mentoring, Jim contributed greatly to improving the technical requirements andsafety of the facilities and installations that applied the standards whose committees he served on for more than40 years. Jim was a registered Professional Engineer i
46、n a number of states and held patents in the fields of both LPGand LNG in his name. Jim actively participated as an NFPA Technical Committee member on the NFPA 59A LNGStandard from 1969, NFPA 59 LPU Standard from 1987, and the NFPA 58 LPG Standard from 1988 until his passing.Jim also served as Chair
47、 for both NFPA 59 and NFPA 59A. Jim earned the respect and admiration of his gas industrycolleagues in both his professional and personal life. His presence at future TC meetings, his advice, his counsel, andfriendship will be sorely missed.592 UTILITY LP-GAS PLANT CODE2015 EditionTechnical Committe
48、e on LP-Gases at Utility Gas PlantsKevin L. Ritz, ChairBaltimore Gas acontainer or containers; major devices such as vaporizers, re-lief valves, excess-flow valves, and regulators; and intercon-necting piping. In the case of refrigerated storage, it also in-cludes compressors, condensers, and other
49、related equipmentand controls. Such systems include any unloading equipment,storage equipment, or interconnecting piping up to the outletof the first stage regulator, vaporizer, or mixing device, which-ever is the last unit before the liquefied petroleum gas entersother plant equipment or distribution lines.3.3.35 UL. Underwriters Laboratories Inc. 58, 20143.3.36* Utility Gas Plant. A plant that stores and vaporizes LP-Gas for distribution that supplies either LP Gas or LP-Gas gasairmixtures to a gas distribution system of 10 or more customers.3.3.37 Valve.3.3.37.1 Excess-F
