1、NFPA 24 Standard for the Installation of Private Fire Service Mains and Their Appurtenances 2016 Edition NFPA, 1 Batterymarch Park, Quincy, MA 02169-7471 An International Codes and Standards Organization 1/14ISBN: 978-145591160-8 (Print)ISBN: 978-145591197-4 (PDF)IMPORTANT NOTICES AND DISCLAIMERS CO
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29、NFPA codes and standards can be viewed at no cost at www.nfpa.org/freeaccess.Copyright 2015 National Fire Protection Association. All Rights Reserved.NFPA24Standard for theInstallation of Private Fire Service Mains and Their Appurtenances2016 EditionThis edition of NFPA 24, Standard for the Installa
30、tion of Private Fire Service Mains and TheirAppurtenances, was prepared by the Technical Committee on Private Water Supply PipingSystems, released by the Correlating Committee on Automatic Sprinkler Systems, and actedon by NFPA at its June Association Technical Meeting held June 2225, 2015, in Chica
31、go, IL.It was issued by the Standards Council on August 18, 2015, with an effective date of September7, 2015, and supersedes all previous editions.This edition of NFPA 24 was approved as an American National Standard on September 7,2015.Origin and Development of NFPA 24In 1903, the NFPA Committee on
32、 Hose and Hydrants first presented Specifications for MillYard Hose Houses, taken substantially from a standard published by the Eastern Factory Insur-ance Association. This text was revised and adopted in 1904. The NFPA Committee on FieldPractice amended the Specifications in 1926, published as NFP
33、A 25.In 1925, the Committee on Field Practice prepared a Standard on Outside Protection, PrivateUnderground Piping Systems Supplying Water for Fire Extinguishment, which was adopted by NFPA.It was largely taken from the 1920 edition of the NFPA Automatic Sprinkler Standard, Section Mon Underground P
34、ipes and Fittings. In September 1931, a revision was made, with the result-ing standard designated as NFPA 24. In the 1981 edition the title was changed from Standardfor Outside Protection to Standard for the Installation of Private Fire Service Mains and Their Appurte-nances.In 1953, on recommendat
35、ion of the Committee on Standpipes and Outside Protection,the two standards (NFPA 24 and NFPA 25) were completely revised and adopted as NFPA 24.Amendments were made leading to separate editions in 1955, 1959, 1962, 1963, 1965, 1966,1968, 1969, 1970, 1973, 1977, 1981, 1983, and 1987.The 1992 edition
36、 included amendments to further delineate the point at which the watersupply stops and the fixed fire protection system begins. Minor changes were made concern-ing special topics such as thrust restraint and equipment provisions in valve pits.The 1995 edition clarified requirements for aboveground a
37、nd buried piping. Revisionswere made to provide additional information regarding listing requirements, signage, valves,valve supervision, hydrant outlets, system attachments, piping materials, and thrust blocks.User friendliness of the document was also addressed.The 2002 edition represented a compl
38、ete revision of NFPA 24. Changes included reorga-nization and editorial modifications to comply with the Manual of Style for NFPA TechnicalCommittee Documents. Additionally, all of the underground piping requirements were relocatedinto a new Chapter 10.The 2007 edition was revised in five major area
39、s: Chapter 10 was editorially updated andminor technical changes were made. In addition, newly established leakage test criteria, aswell as updated requirements for thrust blocks and restrained joints were added to Chapter10. Two annexes were new to this edition: Annex C, Recommended Practice for Fi
40、re Flow Testing,and Annex D, Recommended Practice for Marking of Hydrants. These two annexes were developedbased on the 2002 edition of NFPA 291.The 2010 edition was revised in three major areas: the provisions for location and identi-fication of fire department connections, valves controlling water
41、 supply, and protection of fireservice mains entering the building.241NFPA and National Fire Protection Association are registered trademarks of the National Fire Protection Association, Quincy, Massachusetts 02169.The 2013 edition of NFPA 24 included clarifications on the requirements for running p
42、iping under buildings,including annex figures depicting clearances. The Contractors Material and Test Certificate for Underground Piping(Figure 10.10.1) was modified to include confirmation that the forward flow test of the backflow preventer had beenconducted. A provision requiring the automatic dr
43、ip valve to be located in an accessible location that permits inspec-tions in accordance with NFPA 25 was also added.NFPA 24 underwent a structural rewrite for the 2016 edition. The hydrant definitions have been clarified todescribe the type of hydrant in question, as opposed to describing when and
44、where they would be used. The valvearrangement requirements have been rewritten for clarity, and annex figures added to provide figures that are consis-tent with NFPA 13. The title of Chapter 6 has been changed from “Valves” to “Water Supply Connections,” to betterdescribe the material covered withi
45、n the chapter. Revisions to Section 6.1 better call out the permitted exceptions toindicating valves and permit nonlisted tapping sleeve and valve assemblies in connections to municipal water supplies.The center of hose outlet measurements have been updated to include clear minimum and maximum value
46、s for thelocation of the outlet, along with the appropriate measurement for a hose house installation. The steel undergroundpiping references have been removed from the table in Chapter 10 since steel pipe is required to be listed other thanin the FDC line. A statement also has been added to allow u
47、nderground fittings to be used above ground to transitionto aboveground piping.242 INSTALLATION OF PRIVATE FIRE SERVICE MAINS AND THEIR APPURTENANCES2016 EditionCorrelating Committee on Automatic Sprinkler SystemsKenneth W. Linder, ChairSwiss Re, CT IJose R. Baz, JRB Associates Group Inc., FL MRep.
48、NFPA Latin American SectionKerry M. Bell, UL LLC, IL RTTracey D. Bellamy, Telgian Corporation, GA URep. The Home DepotRussell P. Fleming, National Fire Sprinkler Association,Inc., NY MScott T. Franson, The Viking Corporation, MI MMichael J. Friedman, Friedman Consulting, Inc., MDSERaymond A. Grill,
49、Arup, DC SELuke Hilton, Liberty Mutual Property, NC IAlex Hoffman, Viking Fire Protection Inc., Canada IMRep. Canadian Automatic Sprinkler AssociationRoland J. Huggins, American Fire Sprinkler Association,Inc., TX IMSultan M. Javeri, SC Engineering, France IMCharles W. Ketner, National Automatic Sprinkler FittersLU 669, MD LRep. United Assn. of Journeymen be-tween a source of water and inlets to foam-making systems;between a source of water and the base elbow of private hy-drants or monitor nozzles; and used as fire pump suction anddischarge piping, be
