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1、NFPA 268 Standard Test Method for Determining Ignitability of Exterior Wall Assemblies Using a Radiant Heat Energy Source 2001 Edition NFPA, 1 Batterymarch Park, PO Box 9101, Quincy, MA 02269-9101 An International Codes and Standards Organization NFPA License Agreement This document is copyrighted b
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29、Provided by IHS under license with NFPA Not for ResaleNo reproduction or networking permitted without license from IHS -,-,- Copyright 2001, National Fire Protection Association, All Rights Reserved NFPA 268 Standard Test Method for Determining Ignitability of Exterior Wall Assemblies Using a Radian
30、t Heat Energy Source 2001 Edition This edition of NFPA 268, Standard Test Method for Determining Ignitability of Exterior Wall AssembliesUsingaRadiantHeatEnergySource,waspreparedbytheTechnicalCommitteeonFire Tests and acted on by NFPAat its MayAssociationTechnical Meeting held May 1317, 2001, in Ana
31、heim, CA. It was issued by the Standards Council on July 13, 2001, with an effective date of August 2, 2001, and supersedes all previous editions. This edition of NFPA 268 was approved as an American National Standard on August 2, 2001. Origin and Development of NFPA 268 The 1996 edition represented
32、 the first edition for a standard that addressed the determi- nation of ignitability characteristics of exterior wall assemblies.The test method incorporated a radiant heat energy source. At the time this document was published, there were no stan- dardized test methods available within the standard
33、 writing organizations, and this document complemented the fire test methods available within the NFPA standards. The results of this test can be used to measure and describe properties of materials in controlled laboratory conditions and also can be used as an element of a fire risk assessment. The
34、 2001 edition has incorporated the new format and editorial changes as required to satisfy the NFPA Manual of Style. Revisions to 11.4.2, 11.4.2.1, and 12.1(10)(c) were made to incorporate the specific time period that was originally within the definition. There were no significant revisions made in
35、 this edition. 2681 Copyright National Fire Protection Association Provided by IHS under license with NFPA Not for ResaleNo reproduction or networking permitted without license from IHS -,-,- Technical Committee on Fire Tests Jesse J. Beitel, Chair Hughes Associates, Inc., MD SE Patty K. Adair, Amer
36、ican Textile Manufacturers Institute, DC M April L. Berkol, Starwood Hotels and Resorts, Inc., NY U Rep. American Hotel and Motel Association John A. Blair, The DuPont Company, DE M Rep. The Society of the Plastics Industry Inc. William E. Fitch, Omega Point Laboratories Inc., TX RT Thomas W. Fritz,
37、 Armstrong World Industries, Inc., PA M James R. Griffith, Southwest Research Institute, TX RT Gordon E. Hartzell, Hartzell Consulting, Inc., TX SE Marcelo M. Hirschler, GBH International, CA SE Alfred J. Hogan, Ready Creek Improvement District, FL E Rep. International Fire Marshals Association Will
38、iam E. Koffel, Jr., Koffel Associates, Inc., MD SE James R. Lawson, U.S. National Institute of Standards and Technology, MD RT Rodney A. McPhee, Canadian Wood Council, ON, Canada M William S. Metes, Underwriters Laboratories Inc., IL RT James A. Milke, University of Maryland, MD SE John Roberts, Und
39、erwritersLaboratories of Canada, ON, Canada RT Nigel R. Stamp, Intertek Testing Services NA Inc., WI RT Phil M. Stricklen, American Fibers and Yarns Company, GA M Kuma Sumathipala, American Forest 1 kW/m2= 5.28 Btu/ft2-sec. 26813ANNEX B 2001 Edition Copyright National Fire Protection Association Pro
40、vided by IHS under license with NFPA Not for ResaleNo reproduction or networking permitted without license from IHS -,-,- the exposure conditions possible with this apparatus have not been determined. B.3.7 Reference Notes. 1 Beitel, Jesse J., “Large-Scale Radiant Heat Exposure Tests of Exterior Ins
41、ulated Finish Systems,” Final Report, SwRI Project No. O1-3528, June 1991. 2 Fisher, Fred L. and Charles M. Fleishmann, “Radiant Heat Exposure of Exterior Walls,” Final Report, Project No. FRD8933, October 1992. 3 Grand,Arthur F. andAnthony J.Valys, “Report on Cone CalorimeterTime to IgnitionTest,”
42、Final Report, SwRI Project No. 01-3782-022, September 20, 1991. Annex CInformational References C.1 Referenced Publications. The following documents or portions thereof are referenced within this standard for infor- mational purposes only and are thus not part of the require- ments of this document
43、unless also listed in Chapter 2. C.1.1 NFPA Publications. (Reserved) C.1.2 Other Publications. C.1.2.1 ASTM Publication. American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. ASTM E 511, Standard Test Method for Measuring Heat Flux Using a Copper-Consta
44、ntan Circular Foil, Heat-Flux Gage, 1994. C.1.2.2 BOCA Publication. Building Officials see also Radiant panel; Specimen Instrumentation . 6.1 to 6.2 Setup 4.2, A.4.2.5 Summary of Chap. 4 Validity of results . 11.5 Test panelsee Radiant panel Test results, summary of . Table B.3.1 Test specimen see S
45、pecimen Thermocouples . 5.3.2.5, 6.2, 12.1(5) Thermostatic shutoff . 10.1(3) -U- U.S. model building codes B.1 to B.2 -V- Validity of results Calibration test 8.3 Product test 11.5 Valves, pressure relief . 5.3.2.3 to 5.3.2.4, 10.2 Videotaping . 11.3.4 -W- Water coolant . 5.3.2, 11.2(3) 26816DETERMINING IGNITABILITY OF EXTERIOR WALL ASSEMBLIES USING A RADIANT HEAT ENERGY SOURCE 2001 EditionCou-E Copyright National Fire Protection Association Provided by IHS under license with NFPA Not for ResaleNo reproduction or networking permitted without license from IHS -,-,-