1、NFPA 51B Standard for Fire Prevention During Welding, Cutting, and Other Hot Work 2014 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
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29、 Rights Reserved. NFPA 51B Standardfor FirePreventionDuringWelding,Cutting,andOtherHotWork 2014Edition This edition of NFPA 51B,StandardforFirePreventionDuringWelding,Cutting,andOtherHot Work, was prepared by the Technical Committee on Hot Work Operations. It was issued by the Standards Council on M
30、ay 28, 2013, with an effective date of June 17, 2013, and supersedes all previous editions. This edition of NFPA 51B was approved as an American National Standard on June 17, 2013. OriginandDevelopmentofNFPA51B This standard was tentatively adopted at the 1960 NFPA Annual Meeting, and the first edit
31、ion was adopted in 1962. Subsequent editions were published in 1971, 1976, 1977, 1984, 1989, and 1994. The 1999 edition was expanded to include other hot work operations, as defined in the document, to clarify the roles of fire watch, and to introduce a defined permit authorizing individual. The 200
32、3 edition was modified to incorporate the following additions: a clear reference to ANSI Z49.1, Safety inWelding, Cutting, andAllied Processes, to ensure other non-fire-related hot work requirements were followed; a requirement for signs designating hot work areas as needed; further clarification in
33、 the annex of the role of fire watch and more advisory material describing management responsibilities; requirements for consideration on nonhorizontal spark or slag travel hazard; requirements and advisory material for the consideration of per- sonal protective equipment; decision trees for when a
34、permit is needed and when a fire watch is needed; and a new chapter, “Sole Proprietors and Individual Operators,” to consider the “one-person shops.” The 2003 edition was also modified to comply with the updated Manual of Style forNFPATechnical Committee Documents. The 2009 edition included a new re
35、quirement for listed and/or approved welding blan- kets, pads, and curtains and gave definitions of those terms, updated permit information, and gave clarification of the 35 Foot Rule, alternative methods to hot work, requirements for site-specific hazard awareness by hot work contractors, and new r
36、equirements for personal protective equipment. The 2014 edition includes new definitions on designated and permitted areas. In addition to the definitions, new requirements have been added to designated areas. The scope has been modified to clarify that the document is also concerned with preventing
37、 injuries and not just loss of life during hot work operations. The purpose has been revised to clarify that this document provides requirements and not just guidance and that it applies to all those who are involved with hot work operations. A requirement has been added for welding blankets, pads,
38、and curtains to be both listed and approved. A requirement has also been added stating that the maximum period for which a permit is valid is limited to a 24-hour period. 51B1 NFPA and National Fire Protection Association are registered trademarks of the National Fire Protection Association, Quincy,
39、 Massachusetts 02169.TechnicalCommitteeonHotWorkOperations MarkE.Blank, Chair FM Global, IL I ScottR.Altemose, Trefoil Training & Technical Assistance, PA SE RichardS.Anderson, XL Global Asset Protection Services, CA I ChristopherJ.Bloom, CJB Fire Consultants, OR SE GregoryR.Cameron, Arizona Public
40、Service Company, AZ U DanielDriebel, Road Sprinkler Fitters UA Local Union 669, WI L Rep. United Assn. of Journeymen & Apprentices of the Plumbing & Pipe Fitting Industry ChristopherDrobny, Chubb Group of Insurance Companies, CA I AaronD.Duff, Bristol-Myers Squibb Company, NJ U Rep. NFPA Industrial
41、Fire Protection Section TolgaDurak, Radford University, VA SE ThomasK.Furlong, Nuclear Service Organization, DE I SatyaPrakashGarg, GAIL (India) Limited, India E JamesR.Haiser,Jr., Dow Corning Corporation, MI U DavidW.Hollinger, City of Reading Department of Fire & Rescue Services, PA E DennisR.Howa
42、rd, Safety Management, Inc., LA SE TraciD.Huffman, Allianz Risk Consulting, LLC, IA I SergioLinan, Zurich Insurance Company, Mexico I RichardT.Long,Jr., Exponent, Inc., MD SE AugustF.Manz, A. F. Manz Associates, NJ M Rep. American Welding Society RobertB.Nicholson,III, Eastern Propane Corporation, N
43、J IM Rep. National Propane Gas Association MichaelF.OBrien, Auburn Manufacturing, Inc., ME M LesterW.Swanson, ArcelorMittal, IN U AlainTheriault, Pyrotech BEI Inc., Canada SE AntonyD.Tijerina, Tijerina Investigations, Inc., GA SE DavidA.Werba, Miller Electric Manufacturing Company, WI M Rep. Nationa
44、l Electrical Manufacturers Association EdwardJ.Willwerth, Marine Chemist Association, Inc., MA SE JohnZimlich,Jr., BAE Systems, KY U Alternates JosephM.Bloom, Bloom Fire Investigation, OR SE (Alt. to C. J. Bloom) AndrewBlum, Exponent, Inc., MD SE (Alt. to R. T. Long, Jr.) AndrewJ.Brady, Nuclear Serv
45、ice Organization, DE I (Alt. to T. K. Furlong) DeAndreaD.Cooley, Allianz Risk Consulting, LLC, IL I (Alt. to T. D. Huffman) DanielM.Fritz, XL Insurance America, Inc., IL I (Alt. to R. S. Anderson) StephenP.Hedrick, American Welding Society, FL M (Alt. to A. F. Manz) ChristopherS.OShell, Chubb Group
46、of Insurance Companies, AZ I (Alt. to C. Drobny) SergioPrete, FM Global, RI I (Alt. to M. E. Blank) RobertD.Ziebarth, Zurich Services Corporation, OH I (Alt. to S. Linan) DerekDuval, NFPA Staff Liaison This list represents the membership at the time the Committee was balloted on the final text of th
47、is edition. Since that time, changes in the membership may have occurred.Akey to classifications is found at the back of the document. NOTE: Membership on a committee shall not in and of itself constitute an endorsement of the Association or any document developed by the committee on which the membe
48、r serves. Committee Scope: This Committee shall have primary responsibility for documents on the prevention of injury, loss of life, and loss of property from fire or explosion as a result of hot work. Hot work operations include, but are not limited to, cutting, welding, burning, or similar operati
49、ons capable of initiating fire or explosion. 51B2 FIRE PREVENTION DURING WELDING, CUTTING, AND OTHER HOT WORK 2014 EditionContents Chapter1 Administration . 51B4 1.1 Scope 51B4 1.2 Purpose 51B4 1.3 Application 51B4 1.4 Retroactivity . 51B4 1.5 Equivalency 51B4 Chapter2 ReferencedPublications 51B4 2.1 General . 51B4 2.2 NFPA Publications 51B4 2.3 Other Publications . 51B5 2.4 References for Extracts in Mandatory Sections . 51B5 Chapter3 Definitions 51B5 3.1 General . 51B5 3.2 NFPA Official Defi
