1、NFPA24Standard for the Installation of Private Fire Service Mains and Their Appurtenances Handbook 201324NFPA,1 Batterymarch Park, Quincy, MA 02169-7471, USAAn International Codes and Standards OrganizationNFPA, 1 Batterymarch Park, Quincy, MA 02169-7471An International Codes and Standards Organizat
2、ionNFPA24Standard for the Installation Annotated by Matthew J. Klausof Private Fire Service Mainsand Their Appurtenances Handbook 2013Copyright 2012National Fire Protection AssociationOne Batterymarch Park Quincy, Massachusetts 02169-7471 All rights reserved. About this Handbook EditionThis PDF cont
3、ains the complete 2013 edition of NFPA 24, Standard for the Installation of Private Fire Service Mains and Their Appurtenances, annotated to assist the readers understanding of the standards language and the intent behind it. The annotations are not part of the NFPA Stan-dard but provide a valuable
4、commentary reflecting the views, explanations, and insights of au-thors and contributors selected by the NFPA based on their knowledge of and experience with the standard.How to Navigate Between the Text of the Standard and the AnnotationsNavigate between code or standard text and annotations by usi
5、ng hyperlinked icons and code numbers.While in code or standard text, click on hyperlinked icon* to the left of the standard sec-tion to navigate to corresponding annotations. Click on the hyperlinked annotative standard section number 1.1 to return to previous standard section.*Please note, only th
6、e sections featuring icons contain annotations.For longer blocks of annotations, it is recommended that you enable the back arrow functional-ity in Acrobats page navigation menu, which will also allow you to return to the previous stan-dard section.How to Ensure You Have the Most Up-to-date Version
7、of the NFPA StandardThe NFPA Standard, in the edition contained herein, is current as of the effective date des-ignated at the time the standard was issued 2013. This (ANDBOOKEdition does not, however, include errata, tentative interim amendments (TIAs), or formal interpretations (FIs) that may have
8、 been issued after the effective date. For all errata, TIAs, or FIs that may have been issued since the effective date, or for any new editions that may have superseded this edition, please visit the “Document Information pages” link for the relevant NFPA Standard located in the “Codes email: stds_a
9、dminnfpa.org.For more information about NFPA, visit the NFPA website at www.nfpa.org. IMPORTANT NOTICES AND DISCLAIMERS CONCERNING THE HANDBOOK EDITIONNotice and Disclaimer Concerning LiabilityNotice Concerning Interpretations Contained in the AnnotationsISBN: 978-1455906666Publication of this (ANDB
10、OOKEdition is for the purpose of circulating information and opinion among those concerned for fire and electrical safety and related subjects. While every effort has been made to achieve a work of high quality, neither the NFPAnor the contributors to this (ANDBOOKEdition guarantee the accuracy or c
11、ompleteness of or assume any liability in connec-tion with the information and opinions contained in this (ANDBOOK%dition. The NFPA and the contributors shall in no event be liable for any personal injury, property, or other damages of any nature whatsoever, whether special, indirect, consequential,
12、 or compensatory, directly or indirectly resulting from the publication, use of, or reliance upon this (ANDBOOK EditioNThis (ANDBOOK Edition is published with the understanding that the NFPA and the contribu-tors to this (ANDBOOK Edition are supplying information and opinion but are not attempting t
13、o render engineering or other professional services. If such services are required, the assistance of an appropriate professional should be sought.NFPA codes, standards, recommended practices, and guides (“NFPA Documents”), includ-ing the NFPA Document that is the subject of this (ANDBOOKEdition, ar
14、e made available for usesubject to Important Notices and Disclaimers Concerning NFPA Documents, which are sepa-rately bookmarked and viewable in this (ANDBOOKEdition, and which can also be viewed at www.nfpa.org/disclaimers.NFPA codes, standards, recommended practices, and guides (“NFPA Documents”),
15、 including the NFPA Document that is the subject of this (ANDBOOKEdition are developed in accordancewith the published procedures of the NFPA by technical committees comprised of volunteers drawn from a broad array of relevant interests. In this (ANDBOOKEdition the text of the NFPADocument is accomp
16、anied with annotations providing explanation and commentary on the meaning and intent of the Document. The annotations contained in this (ANDBOOK Edition are not a part of the NFPA Document and do not constitute Formal Interpretations of the NFPA (which can be obtained only through requests processe
17、d by the responsible technical committees in accordance with the published procedures of the NFPA). The annotations, therefore, solely reflect the personal opinions of the author or other contributors and do not necessarily represent the official position of the NFPA or its technical committees.Copy
18、right 2012 National Fire Protection Association. All Rights Reserved.NFPA24Standard for theInstallation of Private Fire Service Mains and Their Appurtenances2013 EditionThis edition of NFPA 24, Standard for the Installation of Private Fire Service Mains and TheirAppurtenances, was prepared by the Te
19、chnical Committee on Private Water Supply PipingSystems and released by the Technical Correlating Committee Automatic Sprinkler Systems.It was issued by the Standards Council on May 29, 2012, with an effective date of June 18, 2012,and supersedes all previous editions.This edition of NFPA 24 was app
20、roved as an American National Standard on June 18, 2012.Origin and Development of NFPA 24In 1903, the NFPA Committee on 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 wa
21、s revised and adopted in 1904. The NFPA Committee on FieldPractice amended the Specifications in 1926, published as NFPA 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
22、 by NFPA. Itwas largely taken from the 1920 edition of the NFPA Automatic Sprinkler Standard, Section M onUnderground Pipes and Fittings. In September 1931, a revision was made, with the resultingstandard designated as NFPA 24. In the 1981 edition the title was changed from Standard forOutside Prote
23、ction to Standard for the Installation of Private Fire Service Mains and Their Appurtenances.In 1953, on recommendation 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 separat
24、e editions in 1955, 1959, 1962, 1963, 1965, 1966,1968, 1969, 1970, 1973, 1977, 1981, 1983, and 1987.The 1992 edition 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
25、as thrust restraint and equipment provisions in valve pits.The 1995 edition clarified requirements for aboveground and buried piping. Revisionswere made to provide additional information regarding listing requirements, signage, valves,valve supervision, hydrant outlets, system attachments, piping ma
26、terials, and thrust blocks.User friendliness of the document was also addressed.The 2002 edition represented a complete 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
27、 underground piping requirements were relocatedinto a new Chapter 10.The 2007 edition was revised in five major areas: 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 r
28、estrained joints were added to Chapter10. Two annexes were new to this edition: Annex C, Recommended Practice for Fire 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 m
29、ajor areas: the provisions for location and identi-fication of fire department connections, valves controlling water supply, and protection of fireservice mains entering the building.The 2013 edition of NFPA 24 includes clarifications on the requirements for runningpiping under buildings, including
30、annex figures depicting clearances. The Contractors Ma-terial and Test Certificate for Underground Piping (Figure 10.10.1) was modified to includeconfirmation that the forward flow test of the backflow preventer has been conducted. Aprovision requiring the automatic drip valve to be located in an ac
31、cessible location thatpermits inspections in accordance with NFPA 25 was also added.241NFPA and National Fire Protection Association are registered trademarks of the National Fire Protection Association, Quincy, Massachusetts 02169.Technical Correlating Committee on Automatic Sprinkler SystemsEdward
32、 K. Budnick, ChairHughes Associates, Inc. MD SEJose R. Baz, JRB Associates Group Inc., FL MRep. NFPA Latin American SectionKerry M. Bell, Underwriters Laboratories Inc., IL RTRussell P. Fleming, National Fire Sprinkler Association,Inc., NY MScott T. Franson, The Viking Corporation, MI MMichael J. Fr
33、iedman, Friedman Consulting, Inc., MD SERaymond A. Grill, Arup Fire, 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
34、Engineering, France IMCharles W. Ketner, National Automatic Sprinkler FittersLU 669, MD LRep. United Association of Journeymen andApprentices of the Plumbing and Pipe Fitting IndustryAndrew Kim, National Research Council of Canada,Canada RTRussell B. Leavitt, Telgian Corporation, AZ URep. Trinity He
35、althJohn G. ONeill, The Protection Engineering Group, PC,VA SEGarner A. Palenske, Aon/Schirmer EngineeringCorporation, CA IJ. William Sheppard, Sheppard it has a control valve below the frost line be-tween the footpiece and the barrel.3.4.1.2 Flow Hydrant. The hydrant that is used for the flowand fl
36、ow measurement of water during a flow test.3.4.1.3* Private Fire Hydrant. A valved connection on awater supply system having one or more outlets and that isused to supply hose and fire department pumpers with wa-ter on private property.3.4.1.4 Public Hydrant. A valved connection on a watersupply sys
37、tem having one or more outlets and that is usedto supply hose and fire department pumpers with water.3.4.1.5 Residual Hydrant. The hydrant that is used formeasuring static and residual pressures during a flow test.3.4.1.6 Wet Barrel Hydrant. A type of hydrant that some-times is used where there is n
38、o danger of freezing weather.Each outlet on a wet barrel hydrant is provided with avalved outlet threaded for fire hose.Chapter 4 General Requirements4.1* Plans.4.1.1 Working plans shall be submitted for approval to theauthority having jurisdiction before any equipment is installedor remodeled.4.1.2
39、 Deviation from approved plans shall require permis-sion of the authority having jurisdiction.4.1.3 Working plans shall be drawn to an indicated scale onsheets of uniform size, with a plan of each floor as applicable,and shall include the following items that pertain to the de-sign of the system:(1)
40、 Name of owner(2) Location, including street address(3) Point of compass(4) A graphic representation of the scale used on all plans(5) Name and address of contractor(6) Size and location of all water supplies(7) Size and location of standpipe risers, hose outlets, handhose, monitor nozzles, and rela
41、ted equipment(8) The following items that pertain to private fire servicemains:(a) Size(b) Length(c) Location(d) Weight(e) Material(f) Point of connection to city main(g) Sizes, types, and locations of valves, valve indicators,regulators, meters, and valve pits(h) Depth at which the top of the pipe
42、is laid belowgrade(i) Method of restraint(9) The following items that pertain to hydrants:(a) Size and location, including size and number of out-lets and whether outlets are to be equipped with in-dependent gate valves(b) Thread size and coupling adapter specifications ifdifferent from NFPA 1963(c)
43、 Whether hose houses and equipment are to be pro-vided, and by whom(d) Static and residual hydrants used in flow(e) Method of restraint(10) Size, location, and piping arrangement of fire depart-ment connections4.1.4 The working plan submittal shall include the manufac-turers installation instruction
44、s for any specially listed equip-ment, including descriptions, applications, and limitations forany devices, piping, or fittings.4.2 Installation Work.4.2.1 Installation work shall be performed by fully experi-enced and responsible persons.4.2.2 The authority having jurisdiction shall always be con-
45、sulted before the installation or remodeling of private fire ser-vice mains.Chapter 5 Water Supplies5.1* Connection to Waterworks Systems.5.1.1 A connection to a reliable waterworks system shall be anacceptable water supply source.5.1.2* The volume and pressure of a public water supply shallbe deter
46、mined from waterflow test data or other approvedmethod.248 INSTALLATION OF PRIVATE FIRE SERVICE MAINS AND THEIR APPURTENANCES2013 Edition5.2 Size of Fire Mains.5.2.1 Private Fire Service Mains. Pipe smaller than 6 in.(152 mm) in diameter shall not be installed as a private servicemain supplying hydr
47、ants.5.2.2 Mains Not Supplying Hydrants. For mains that do notsupply hydrants, sizes smaller than 6 in. (152 mm) shall bepermitted to be used subject to the following restrictions:(1) The main shall supply only the following types of systems:(a) Automatic sprinkler systems(b) Open sprinkler systems(
48、c) Water spray fixed systems(d) Foam systems(e) Standpipe systems(2) Hydraulic calculations shall show that the main is able tosupply the total demand at the appropriate pressure.(3) Systems that are not hydraulically calculated shall have amain at least as large as the riser.5.3 Pressure-Regulating
49、 Devices and Meters.5.3.1 No pressure-regulating valve shall be used in the watersupply, except by special permission of the authority havingjurisdiction.5.3.2 Where meters are required by other authorities, theyshall be listed.5.4* Connection from Waterworks Systems.5.4.1 The requirements of the public health authority havingjurisdiction shall be determined and followed.5.4.2 Where equipment is installed to guard agai
