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1、NFPA 14 Standard for the Installation of Standpipe and Hose Systems 2007 Edition NFPA, 1 Batterymarch Park, Quincy, MA 02169-7471 An International Codes and Standards Organization IMPORTANT NOTICES AND DISCLAIMERS CONCERNING NFPA DOCUMENTS NOTICE AND DISCLAIMER OF LIABILITY CONCERNING THE USE OF NFP
2、A DOCUMENTS NFPA codes, standards, recommended practices, and guides, of which the document contained herein is one, are de- veloped through a consensus standards development process approved by the American National Standards Institute. This process brings together volunteers representing varied vi
3、ewpoints and interests to achieve consensus on fire and other safety issues. While the NFPA administers the process and establishes rules to promote fairness in the develop- ment of consensus, it does not independently test, evaluate, or verify the accuracy of any information or the soundness of any
4、 judgments contained in its codes and standards. The NFPA disclaims liability for any personal injury, property or other damages of any nature whatsoever, whether special, indirect, consequential or compensatory, directly or indirectly resulting from the publication, use of, or reliance on this docu
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6、rtaking to perform any duty owed by any person or entity to someone else. Anyone using this document should rely on his or her own independent judgment or, as appropriate, seek the advice of a competent professional in determining the exercise of reasonable care in any given circumstances. The NFPA
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20、 practices, and guides and all requests for information on NFPA procedures governing its codes and standards development process, including information on the procedures for requesting Formal Interpretations, for proposing Tentative Interim Amendments, and for proposing revisions to NFPA documents d
21、uring regular revision cycles, should be sent to NFPA headquarters, addressed to the attention of the Secretary, Standards Council, NFPA, 1 Batterymarch Park, P.O. Box 9101, Quincy, MA 02269-9101. For more information about NFPA, visit the NFPA website at www.nfpa.org. -,-,- Copyright 2006 National
22、Fire Protection Association. All Rights Reserved. NFPA 14 Standard for the Installation of Standpipe and Hose Systems 2007 Edition This edition of NFPA14, Standard for the Installation of Standpipe and Hose Systems, was prepared by the Technical Committee on Standpipes and acted on by NFPAat its Jun
23、eAssociation Techni- calMeetingheldJune48,2006,inOrlando,FL.ItwasissuedbytheStandardsCouncilonJuly28, 2006, with an effective date ofAugust 17, 2006, and supersedes all previous editions. This edition of NFPA 14 was approved as an American National Standard on August 17, 2006. Origin and Development
24、 of NFPA 14 This standard dates from 1912, when an initial report was made by the Committee on Stand- pipeandHoseSystems.Thereportwasamendedin1914andadoptedbytheAssociationin1915. Revisions were adopted in 1917.Additional revisions were submitted by the Committee on Field Practiceandadoptedin1926,19
25、27,1931,1938(includedactionbytheNFPABoardofDirectors), 1941, and 1945. The Committee on Standpipes recommended revisions adopted in 1949, 1952, 1963, 1968, 1969, 1970, 1971, 1973, 1974, 1976, 1978, 1980, 1982, 1985, and 1990. The 1993 edition of NFPA 14 was a complete reorganization of the document.
26、 The “user friendliness” of NFPA 14 was evaluated, and numerous changes followed. The standard was arranged to provide for a logical system design approach where designing and installing a standpipe system. Substantive changes to the 1993 edition were the result of experience with standpipe systems
27、under fire conditions. Flow rates, pressures, and the specific location of the hose connections were studied to determine optimum combinations for each factor. The 1996 edition of NFPA14 was a continuation of the changes that were initiated for the 1993 edition. Some definitions were expanded, and c
28、ertain requirements for piping materi- als, pipe support, waterflow alarms, valves, fire department connections, system testing, and water supplies were revised. In addition, a number of editorial changes were made to improve the user friendliness of the document. The 2000 edition of NFPA 14 incorpo
29、rated requirements for hydrants, hose houses, and master streams previously contained in NFPA 24, Standard for the Installation of Private Fire Service Mains and Their Appurtenances. Also included in this revision were test procedures for fire flow testing and marking of hydrants previously containe
30、d in NFPA 291, Recommended Practice for Fire Flow Testing and Marking of Hydrants. The 2003 edition was reformatted to conform to the Manual of Style for NFPA Technical Committee Documents, 2000 edition. Hydraulic calculation requirements were rewritten for clarification, and requirements for horizo
31、ntal standpipes were added. Guidance for hydrants, hose houses, and master streams were deleted as this information was retained by NFPA 13, Standard forthe Installation of SprinklerSystems, and NFPA24, Standard forthe Installation of Private Fire Service Mains and Their Appurtenances. Similarly, te
32、st procedures for fire flow testing and marking of hydrants were returned to NFPA 291, Recommended Practice for Fire Flow Testing and Marking of Hydrants, thus “private hydrant” was removed from the title of NFPA 14. The 2007 edition includes guidance on the use of pressure-regulating devices and ro
33、of outlets for standpipe systems. Related information has been extracted from NFPA 13, Stan- dard for the Installation of Sprinkler Systems, to assist the user in applications involving combined sprinkler/standpipe systems. 141 -,-,- Technical Committee on Standpipes Maurice M. Pilette, Chair Mechan
34、ical Designs Ltd., MA SE Thomas C. Brown, Secretary The RJA Group, Inc., MD SE Gary S. Andress, Liberty Mutual Property, MA I Rep. Property Casualty Insurers Association of America Richard W. Bonds, Ductile Iron Pipe Research Association, AL M Lisa Marie Bossert, Schirmer Engineering Corporation, NC
35、 I Randal G. Brown, Randal Brown nor does it approve or evaluate testing laboratories. In determining the acceptability of installa- tions, procedures, equipment, or materials, the authority having jurisdiction may base acceptance on compliance with NFPA or other appropriate standards. In the absenc
36、e of such standards, saidauthoritymayrequireevidenceofproperinstallation,proce- dure, or use. The authority having jurisdiction may also refer to the listings or labeling practices of an organization that is con- cerned with product evaluations and is thus in a position to de- termine compliance wit
37、h appropriate standards for the current production of listed items. A.3.2.2 Authority Having Jurisdiction (AHJ). The phrase “au- thority having jurisdiction,” or its acronym AHJ, is used in NFPA documents in a broad manner, since jurisdictions and approvalagenciesvary,asdotheirresponsibilities.Where
38、pub- lic safety is primary, the authority having jurisdiction may be a federal, state, local, or other regional department or indi- vidual such as a fire chief; fire marshal; chief of a fire preven- tion bureau, labor department, or health department; build- ing official; electrical inspector; or ot
39、hers having statutory authority.Forinsurancepurposes,aninsuranceinspectionde- partment, rating bureau, or other insurance company repre- sentative may be the authority having jurisdiction. In many circumstances, the property owner or his or her designated agent assumes the role of the authority havi
40、ng jurisdiction; at government installations, the commanding officer or depart- mental official may be the authority having jurisdiction. A.3.2.3 Listed. The means for identifying listed equipment may vary for each organization concerned with product evalu- ation; some organizations do not recognize
41、 equipment as listed unless it is also labeled. The authority having jurisdic- tion should utilize the system employed by the listing organi- zation to identify a listed product. A.3.3.8 Pressure-RegulatingDevice.Examplesincludepressure- reducing valves, pressure control valves, and pressure-restric
42、ting devices. A.3.3.12 Standpipe System. This arrangement is accom- plished by means of connections to water supply systems or by means of pumps, tanks, and other equipment necessary to provide an adequate supply of water to the hose connections. A.3.3.15 System Type. NFPA 600, Standard on Industria
43、l Fire Brigades, and the Fire Equipment Manufacturers Association (FEMA) are resources for training of personnel. A.3.3.16.4 Pressure-Reducing Valve. A pressure relief valve is not a pressure-reducing valve and should not be used as such. A.4.1The use of standard-weight valves and fittings ordi- nar
44、ily should be confined to the upper stories of very high buildings and to equipment in which the highest available pressures are less than 175 psi (12.1 bar). A.4.4.1.2 Some steel piping material having lesser wall thick- ness than specified in 4.4.1.2 has been listed for use in sprin- kler systems
45、where joined with threaded connections. The ser- vice life of such products can be significantly less than that of Schedule 40 steel pipe, and it should be determined if this service life will be sufficient for the application intended. All such threads should be checked by the installer using worki
46、ng ring gauges conforming to the “Basic Dimensions of Ring Gauges for USA(American) StandardTaper PipeThreads, NPT,” as per Table 8 of ASME B1.20.1, Pipe Threads, General Pur- pose (Inch). 13:A.6.5.1.2 A.4.4.2.2 Cutting and welding operations account for 4 per- cent of fires each year in nonresident
47、ial properties and 8 per- cent in industrial and manufacturing properties. In-place welding of sprinkler piping introduces a significant hazard that can normally be avoided by shop-welding the piping and installing the welded sections with mechanical fittings. As a result, the standard requires that
48、 all piping be shop-welded. When such situations cannot be avoided, the exceptions out- line procedures and practices that minimize the increase in hazard. (See Figure A.4.4.2.2.) 13: A.6.5.2.2 A.4.4.2.3.1Listed, shaped, and contoured nipples meet the definition of fabricated fittings. 13: A.6.5.2.3
49、.1 A.4.4.2.4.1 Partial penetration welds on outlet fitting connec- tions are considered adequate, since there is no significant load on the joint other than that caused by pressure internal to the pipe (see FigureA.4.4.2.4.1). The load due to the internal pressure can be accommodated with a weld that has a conser- vative weld throat thickness that can be calculated as follows: Weld throat thickness (in.) 0.000035=PD where: P = rated system pressur