NFPA 253-2015 Standard Method of Test for Critical Radiant Flux of Floor Covering Systems Using a Radiant Heat Energy Source (Effective Date 12 01 2014).pdf

1、NFPA 253 Standard Method of Test for Critical Radiant Flux of Floor Covering Systems Using a Radiant Heat Energy Source 2015 Edition NFPA , 1 Batterymarch Park, Quincy, MA 02169-7471, USA An International Codes and Standards Organization 1/14 ISBN: 978-145591045-8 (Print) ISBN: 978-145591091-5 (PDF)

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29、ormation about NFPA, visit the NFPA website at www.nfpa.org. All NFPA codes and standards can be viewed at no cost at www.nfpa.org/freeaccess.Copyright 2014 National Fire Protection Association . All Rights Reserved. NFPA 253 StandardMethodof TestforCriticalRadiantFluxofFloorCoveringSystemsUsinga Ra

30、diantHeatEnergySource 2015Edition This edition of NFPA 253, Standard Method of Test for Critical Radiant Flux of Floor Covering Systems Using a Radiant Heat Energy Source, was prepared by the Technical Committee on Fire Tests. It was issued by the Standards Council on November 11, 2014, with an effe

31、ctive date of December 1, 2014, and supersedes all previous editions. This edition of NFPA 253 was approved as an American National Standard on Decem- ber 1, 2014. OriginandDevelopmentofNFPA253 Experience suggests that during the early stages of a fire, floor covering systems seldom act as a fire-sp

32、read medium. However, in a few fires involving multiple-occupancy buildings, the floor covering materials in corridors were primarily responsible for fire spread over a consid- erable distance. Those situations caused grave concern and pointed to the need for a realistic test to evaluate the flame s

33、pread of floor covering systems. The inception of the flooring radiant panel test was at the Armstrong Cork Company in 1966. In 1972, conceptualization of critical radiant flux (W/cm2 at extinguishment) as a measure of flame spread hazard was underway at the National Bureau of Standards (NBS). It wa

34、s determined in the course of NBS work on model corridor fire tests that the radiant energy levels incident on the floor covering had a considerable influence on whether or not flaming combustion would propagate. Accordingly, it was natural to apply the critical radiant flux concept, and, in 1973, t

35、he NBS prepared a draft of the flooring radiant panel test. In 1975, the Technical Committee on Fire Tests began its evaluation of the proposed test methods, which culminated in the adoption of the test as an official NFPA standard in May 1978. The standard was revised in 1984 and 1990. The 1995 edi

36、tion included significant improvements based on work conducted by the National Institute of Standards and Technology (NIST) and the carpet industry. Those findings improved the overall application of the standard and provided measured im- provement in test precision. Other changes included a new pil

37、ot burner and reduction of the variation in the airflow through the chamber, which reduced the variability of data. Revisions also were made to eliminate “permissive” language. The revisions created closer harmony with ASTM E648, Standard Test Method for Critical Radiant Flux of Floor-Covering Syste

38、ms Using a Radiant Heat Energy Source. The 2000 edition was a reconfirmation of the 1995 edition. The 2006 edition included a complete editorial rewrite for compliance with theManualof StyleforNFPATechnicalCommitteeDocuments. Further organizational and editorial changes were made to clarify the requ

39、irements of the test method. Provisions regarding safety precautions were moved to the annexes, and additional details were provided on simulating a concrete floor during the test. The 2011 edition was revised to create uniformity with other fire test standards. Provisions for laminate floor mountin

40、g were added to Chapter 5. The 2015 edition has been revised to provide clarity on airflow rates and provide updated examples of test apparatuses. 2531 NFPA and National Fire Protection Association are registered trademarks of the National Fire Protection Association, Quincy, Massachusetts 02169.Tec

41、hnicalCommitteeonFireTests BarryL.Badders,Jr., Chair Southwest Research Institute, TX RT ScottW.Adams, Park City Fire Service District, UT E Rep. International Fire Marshals Association FaridAlfawakhiri, American Iron and Steel Institute, IL M JesseJ.Beitel, Hughes Associates, Inc., MD SE JamesA.Bur

42、ns, New York State Department, NY E Rep. Firemens Association of the State of New York GordonH.Damant, Inter-City Testing & Consulting Corp. of California, CA SE ScottE.Dillon, Crane Engineering, IL SE WilliamE.Fitch, P, FL SE MarceloM.Hirschler, GBH International, CA SE PaulA.Hough, Armstrong World

43、 Industries, Inc., PA M MohammedM.Khan, FM Global, MA I WilliamE.Koffel, Koffel Associates, Inc., MD SE RichardT.Long,Jr., Exponent, Inc., MD M Rep. Upholstered Furniture Action Council MichaelE.Luna, Intertek Testing Services, TX RT AndreW.Marshall, University of Maryland, MD SE RodneyA.McPhee, Can

44、adian Wood Council, Canada M KathleenA.Newman, Firetect, CA M DavidT.Sheppard, U.S. Bureau of Alcohol, Tobacco, Firearms & Explosives, MD RT DwayneE.Sloan, UL LLC, NC RT KumaSumathipala, American Wood Council, DC M RobertA.Wessel, Gypsum Association, MD M Alternates ErikH.Anderson, Koffel Associates

45、, Inc., MD SE (Alt. to W. E. Koffel) RichardJ.Davis, FM Global, MA I (Alt. to M. M. Khan) TimothyEarl, GBH International, MI SE (Alt. to M. M. Hirschler) SamW.Francis, American Wood Council, PA M (Alt. to K. Sumathipala) StephenP.Fuss, U.S. Bureau of Alcohol, Tobacco, Firearms & Explosives, MD RT (A

46、lt. to D. T. Sheppard) MarcL.Janssens, Southwest Research Institute, TX RT (Alt. to B. L. Badders, Jr.) ArthurJ.Parker, Hughes Associates, Inc., MD SE (Alt. to J. J. Beitel) StanislavI.Stoliarov, University of Maryland, MD SE (Alt. to A. W. Marshall) InekeVanZeeland, Canadian Wood Council, Canada M

47、(Alt. to R. A. McPhee) RobertJ.Wills, American Iron and Steel Institute, AL M (Alt. to F. Alfawakhiri) JoeZiolkowski, American Furniture Manufacturers Association, NC M (Alt. to R. T. Long, Jr.) Nonvoting RobertH.Barker, American Fiber Manufacturers Association, VA M Rep. American Fiber Manufacturer

48、s Association RohitKhanna, U.S. Consumer Product Safety Commission, MD C TracyL.Vecchiarelli, NFPA Staff Liaison This list represents the membership at the time the Committee was balloted on the final text of this edition. Since that time, changes in the membership may have occurred.Akey to classifi

49、cations 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 member serves. Committee Scope: This Committee shall have primary responsibility for documents on fire testing proce- dures, for reviewing existing fire test standards and recommending appropriate action to NFPA, for recom- mending the application of and advising on the interpretation of accept