1、NFPA1964 Standard for Spray Nozzles 2013 Edition NFPA, 1 Batterymarch Park, Quincy, MA 02169-7471 An International Codes and Standards Organization IMPORTANT NOTICES AND DISCLAIMERS CONCERNING NFPADOCUMENTSNOTICE AND DISCLAIMER OF LIABILITY CONCERNING THE USE OF NFPA DOCUMENTSNFPAcodes, standards, r
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28、cil, NFPA, 1 Batterymarch Park, P.O. Box 9101, Quincy, MA 02269-9101; email: stds_adminnfpa.orgFor more information about NFPA, visit the NFPA website at www.nfpa.org.12/11Copyright 2013 National Fire ProtectionAssociation.All Rights Reserved.NFPA1964Standard forSpray Nozzles2013 EditionThis edition
29、 of NFPA1964, Standard for Spray Nozzles, was prepared by the Technical Com-mittee on Fire Hose. It was issued by the Standards Council on November 27, 2012, with aneffective date of December 17, 2012, and supersedes all previous editions.This edition of NFPA 1964 was approved as an American Nationa
30、l Standard on Decem-ber 17, 2012.Origin and Development of NFPA 1964The first edition of NFPA 1964 was adopted in 1988 based on a need for a standard thatapplied to portable adjustable-pattern nozzles for general fire department use and for use onhose attached to standpipes. In the second edition, t
31、he text was editorially reworked to makethe document more usable, and the details of a few of the test procedures were revised tobetter reflect how the nozzles are used in the field. The 1998 edition allowed for ratingnozzles at other than the traditional 6.9 bar (100 psi); added requirements for ma
32、rinenozzles; and clarified the testing process, methods, and procedures to improve the under-standing of the compliance testing required.The 2003 edition expanded the document to cover master stream spray nozzles up to7570 L/min (2000 gpm) in addition to handline spray nozzles. Requirements for mark
33、ingnozzles were allowed to be in either SI or U.S. units.The pass/fail criteria for some tests wererevised to base them on requirements for the nozzle in the standard rather than on results ofprevioustesting.Theparentheticalexpression“(ShutoffandTip)”wasremovedfromthetitleofthestandard.Thedocumentwa
34、scompletelyrevisedforcompliancewiththe Manual of Stylefor NFPA Technical Committee Documents, and changes were made to improve the clarity of therequirements.The 2008 edition of this standard was a general update and review by the committee.The2013editionofNFPA1964waseditedbytheTechnicalCommitteetoc
35、larifylanguage.The difference between flow and flow rate in comparison to discharge was made clearer toemphasize the importance of flow and flow rate factors in fire suppression. The committeealso transposed measurements to put U.S. units first to reflect the format of other NFPA firehose standards.
36、19641NFPAand National Fire ProtectionAssociation are registered trademarks of the National Fire ProtectionAssociation, Quincy, Massachusetts 02169.Technical Committee on Fire HoseCarl E. Peterson, ChairHingham, MASEJason Goodale, SecretaryLoveland Fire Rescue, CO UDavid Allen, Northline Coupling Sys
37、tems, Canada MThomas G. Farruggia, Illinois Fire nor does it approve orevaluate testing laboratories. In determining the accept-ability of installations, procedures, equipment, or materi-als, the authority having jurisdiction may base acceptanceon compliance with NFPA or other appropriate standards.
38、Intheabsenceofsuchstandards,saidauthoritymayrequireevidence of proper installation, procedure, or use. The au-thority having jurisdiction may also refer to the listings orlabeling practices of an organization that is concerned withproduct evaluations and is thus in a position to determinecompliance
39、with appropriate standards for the current pro-duction of listed items.Table A.1.5(a) Conversion FactorsU.S. to SI SI to U.S.1 psi = 6.895 kPa 1 kPa = 0.145 psi1 psi = 0.0690 bar 1 bar = 14.492 psi1 lb = 0.454 kg 1 kg = 2.205 lb1 in. = 25.40 mm 1 mm = 0.039 in.1 ft = 0.305 m 1 m = 3.281 ft1 gal = 3.
40、785 L 1 L = 0.2642 gal1 lbf = 4.45 N 1 N = 0.2248 lbf1 psi = 0.006 MPa 1 MPa = 145 psi196411ANNEXA2013 EditionA.3.2.2 Authority Having Jurisdiction (AHJ). The phrase “au-thority having jurisdiction,” or its acronym AHJ, is used inNFPA documents in a broad manner, since jurisdictions andapprovalagenc
41、iesvary,asdotheirresponsibilities.Wherepub-lic safety is primary, the authority having jurisdiction may be afederal, 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 off
42、icial; electrical inspector; or others having statutoryauthority.Forinsurancepurposes,aninsuranceinspectionde-partment, rating bureau, or other insurance company repre-sentative may be the authority having jurisdiction. In manycircumstances, the property owner or his or her designatedagent assumes t
43、he role of the authority having jurisdiction; atgovernment installations, the commanding officer or depart-mental official may be the authority having jurisdiction.A.3.3.2 Flush. When the flush feature is engaged, the nozzlepressurewilldropandpatternwilldeteriorate.Infirefighting,caution should be e
44、xercised when the flush feature is en-gaged.A.3.3.4 HandlineNozzle.Handlinenozzlesarenormallyusedon hose lines that can be advanced and maneuvered by fire-fighting personnel while the nozzles are flowing.A.3.3.5 Master Stream Nozzle. Master stream nozzles are nor-mally used with monitors that can be
45、 supplied by either hoselines or fixed piping.A.3.3.6.1 NormalPressure.Normalpressureismeasuredwitha ring gauge or piezometer ring attached to the base of anozzle.A.3.3.6.2 Nozzle Pressure. Pressure without discharge isknown as static pressure. Pressure is measured in pounds persquare inch (psi) or
46、bars.A.3.3.8.1 Basic Spray Nozzle. Due to its basic design, as thepattern changes from straight stream to wide spray, the dis-charge rate will vary. The nozzle pressure will also be affected.These variations are caused by changes in the orifice size toaffect pattern adjustment.A.3.3.8.2 Constant Gal
47、lonage Spray Nozzle. Constant gallon-ageisaccomplishedbymaintainingaconstantorificesizedur-ing discharge pattern adjustment.A.3.3.8.3 Constant Pressure (Automatic) Spray Nozzle. Theconstant pressure provides the velocity for an effective streamreach at various discharge rates. This constant pressure
48、 is ac-complished by means of a pressure-activated self-adjusting ori-fice baffle.A.3.3.8.4 Constant/Select Gallonage Spray Nozzle. Becausethese are constant gallonage nozzles, the discharge rate re-mains constant throughout the range of pattern selectionfrom straight stream to wide spray.A.4.1.1 Sp
49、ray nozzles have traditionally been rated at 100 psi(6.9 bar). Lower rating pressures affect the streams reach andthe characteristics of spray patterns.The purchaser should en-sure that the performance of a nozzle meets his or her needsand expectations.A.4.2.3 Nozzles should be tested and visually inspected forfull and uniform wide spray patterns as follows.With the nozzle discharging horizontally 3 ft (1 m) abovegrade level, it should be set to discharge at its rated pressureand adjusted to the setting where it creates the largest-diameter pattern.The spray issuing from
