NFPA 252-2017 Standard Methods of Fire Tests of Door Assemblies (Effective Date 12 01 2016).pdf
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1、 NFPA 252 Standard Methods of Fire Tests of Door Assemblies 2017IMPORTANT NOTICES AND DISCLAIMERS CONCERNING NFPA STANDARDS NOTICE AND DISCLAIMER OF LIABILITY CONCERNING THE USE OF NFPA STANDARDS NFPA codes, standards, recommended practices, and guides (“NFPA Standards”), of which the document conta
2、ined herein is one, are developed through a consensus standards development process approved by the American National Standards Institute. This process brings together volunteers representing varied viewpoints and interests to achieve consensus on re and other safety issues. While the NFPA administe
3、rs the process and establishes rules to promote fairness in the development of consensus, it does not independently test, evaluate, or verify the accuracy of any information or the soundness of any judgments contained in NFPA Standards. The NFPA disclaims liability for any personal injury, property
4、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 NFPA Standards. The NFPA also makes no guaranty or warranty as to the accuracy or completeness of any information publish
5、ed herein. In issuing and making NFPA Standards available, the NFPA is not undertaking to render professional or other services for or on behalf of any person or entity. Nor is the NFPA undertaking to perform any duty owed by any person or entity to someone else. Anyone using this document should re
6、ly 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 has no power, nor does it undertake, to police or enforce compliance with the contents of NFPA Standards. Nor
7、does the NFPA list, certify, test, or inspect products, designs, or installations for compliance with this document. Any certication or other statement of compliance with the requirements of this document shall not be attributable to the NFPA and is solely the responsibility of the certier or maker
8、of the statement. REMINDER: UPDATING OF NFPA STANDARDS Users of NFPA codes, standards, recommended practices, and guides (“NFPA Standards”) should be aware that NFPA Standards may be amended from time to time through the issuance of Tentative Interim Amendments or corrected by Errata. An ofcial NFPA
9、 Standard at any point in time consists of the current edition of the document together with any Tentative Interim Amendment and any Errata then in effect. In order to determine whether an NFPA Standard has been amended through the issuance of Tentative Interim Amendments or corrected by Errata, vis
10、it the “Codes email: stds_adminnfpa.org. For more information 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/docinfo.252-1 NFPA and National Fire Protection Association are registered trademarks of the National Fire Protectio
11、n Association, Quincy, Massachusetts 02169. Copyright 2016 National Fire Protection Association . All Rights Reserved. NFPA 252 Standard Methods of Fire Tests of Door Assemblies 2017 Edition This edition of NFPA 252, Standard Methods of Fire Tests of Door Assemblies, was prepared by the Technical Co
12、mmittee on Fire Tests. It was issued by the Standards Council on November 11, 2016, with an effective date of December 1, 2016, and supersedes all previous editions. This edition of NFPA 252 was approved as an American National Standard on December 1, 2016. Origin and Development of NFPA 252 The Ame
13、rican Society of Testing and Materials (ASTM) adopted Standard Methods of Fire Tests of Door Assemblies as a tentative standard in 1940 and as a formal standard in 1941. In 1942, the standard was adopted by the NFPA and approved by the American Standards Association. It was reconrmed and adopted in
14、1950 by the Committee on Fire Tests of Building Construction and Materials. In 1953, a new NFPA Committee on Fire Tests was formed by action of the Board of Directors, and recommendations for revision of the standard made by that committee were adopted in 1958, 1969, 1972, 1976, 1979, 1984, and 1990
15、. The basic procedure covered by this standard was developed by Underwriters Laboratories Inc. and has not undergone any signicant revisions to the original concept. The 1995 edition introduced a new provision addressing the neutral plane of the furnace. That provision permits the testing agency to
16、establish the neutral plane of the test furnace to the specication of the particular need by conducting the test under either positive pressure or atmospheric pressure. The 1999 edition of NFPA 252 contained further editorial renements to harmonize the procedures and terminology with those found in
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