NFPA 501A-2017 Standard for Fire Safety Criteria for Manufactured Home Installations Sites and Communities (Effective Date 06 22 2016).pdf

1、501A NFPA Standard for Fire Safety Criteria for Manufactured Home Installations, Sites, and Communities 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 (“N

2、FPA Standards”), of which the document contained 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 o

3、ther safety issues. While the NFPA administers 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

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6、e else. Anyone using this document should rely 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 complian

7、ce with the contents of NFPA Standards. Nor 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

8、 the responsibility of the certier or maker 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 Amend

9、ments or corrected by Errata. An ofcial NFPA 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 In

10、terim Amendments or corrected by Errata, visit 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.501A-1 NFPA and National Fire Protection Association are registe

11、red trademarks of the National Fire Protection Association, Quincy, Massachusetts 02169. Copyright 2016 National Fire Protection Association . All Rights Reserved. NFPA 501A Standard for Fire Safety Criteria for Manufactured Home Installations, Sites, and Communities 2017 Edition This edition of NFP

12、A 501A, Standard for Fire Safety Criteria for Manufactured Home Installations, Sites, and Communities, was prepared by the Technical Committee on Manufactured Housing. It was issued by the Standards Council on June 7, 2016, with an effective date of June 22, 2016, and supersedes all previous edition

13、s. This edition of NFPA was approved as an American National Standard on June 22, 2016. Origin and Development of NFPA 501A NFPA activity associated with manufactured homes began in 1937, when NFPA organized its rst Committee on Trailers and Trailer Courts. The rst NFPA standard covering trailer coa

14、ch camps appeared in 1939, with revisions in 1940, 1952, 1960, and 1964. A completely new edition was adopted in 1971, and that text was revised in 1972, 1973, 1974, 1975, 1977, and 1982. The American National Standards Institute (ANSI) approved the 1972 NFPA edition on May 8, 1973; the 1973 NFPA ed

15、ition on December 28, 1973; the 1974 NFPA edition on January 30, 1975; the 1975 NFPA edition on February 27, 1976; and the 1977 NFPA edition on October 18, 1977. The 1982 edition of Standard for Firesafety Criteria for Mobile Home Installations, Sites, and Communities superseded the 1977 edition and

16、 was adopted by NFPA at its Annual Meeting held in San Francisco in 1982. The 1982 edition was produced by the newly formed Committee for Firesafety for Mobile Homes (created June 1979), which was charged with the responsibility of developing documents for re safety criteria for single-family mobile

17、 homes, including the installation, sites, and communities, and the maintenance of and improvements for existing mobile homes. Therefore, the 1982 edition excluded all sections of previous editions not considered within the committee scope. Notably excluded were stabilizing and anchoring systems, re

18、quirements for piers and footings, and plumbing, including sewage disposal systems. Requirements for park electrical systems were addressed by reference to NFPA 70, National Electrical Code. Modications were also made in sections dealing with fuel supply, air conditioning, and life and re safety. Ma

19、jor revisions to the standard were made in the 1987 edition in an attempt to better coordinate the NFPA chapters in a joint publication with the National Conference of States on Building Codes and Standards (NCSBCS), ANSI A225.1/NFPA 501A. Major changes included substituting manufactured home for mo

20、bile home throughout; deleting Chapter 3, Air Conditioning; expanding Chapter 2, Fuel Supply; and combining three appendixes into two. The standard was reconrmed in 1992 with a plan to expand the scope of NFPA 501A to cover re safety requirements for the design, construction, installation, alteratio

21、n/rehabilitation, maintenance, use, and occupancy of manufactured homes, manufactured home sites, and manufactured home communities, including accessory buildings and structures. This was a major revision of the scope and the entire standard, and the committee targeted a complete revision of NFPA 50

22、1A for 1994. The 1997 edition was a reconrmation of the 1992 edition of NFPA 501A. The proposed expansion of the scope of the 1992 edition, as noted in the preceding paragraph, was discussed and acted on by the technical committee. The scope of NFPA 501A was not expanded; instead, a new document, NF

23、PA 501, Standard on Manufactured Housing, was generated. NFPA 501 represented the reconstituted 1977 edition of NFPA 501B, Standard for Mobile Homes, which was the basis for the federal Manufactured Home Construction and Safety Standards.FIRE SAFETY CRITERIA FOR MANUFACTURED HOME INSTALLATIONS, SITE

24、S, AND COMMUNITIES 501A-2 2017 Edition The earlier editions of NFPA 501A were jointly developed and published by NFPA and NCSBCS as A225.1/NFPA 501A. The 1997 edition of NFPA 501A was published as a separate, stand-alone document in agreement with NCSBCS and contained only the re safety requirements

25、. The nonre safety requirements were published by NCSBCS as A225.1 (1994 edition). NFPA assumed responsibility for NCSBCS A225 standard in 2003, which was processed concurrently with the 2003 edition of NFPA 501A. The 1999 edition was a reconrmation of the 1997 edition. In June 1998, NFPA was select

26、ed by the U.S. Department of Housing and Urban Development (HUD) to update the federal standards (24 CFR 3280) for manufactured homes. As a result of this selection by HUD, the original technical committee for manufactured homes was expanded into six technical committees and a technical correlating

27、committee. The expansion occurred during the Report on Comments phase of the 1999 edition. The 2000 edition had only a few minor revisions. One revision, in 4.3.5, pertained to updating the water supplies for re department operations. The other revisions were editorial in nature. The 2003 edition wa

28、s reformatted to meet the editorial and format-related requirements of the Manual of Style for NFPA Technical Committee Documents. Several denitions were deleted during that revision cycle. The 2005 edition incorporated new requirements for re separation distances between manufactured homes. The 200

29、9 edition of NFPA 501A updated extracted text where appropriate. In addition, revisions were made that claried requirements and added new ones for water supplies that serve the site, and newly revised criteria were introduced for re department access roads and paths. The 2013 edition was revised to

30、include requirements on retroactivity and equivalencies in Chapter 1. Provisions for storm shelters, community buildings, and emergency considerations such as windstorms were added. Several modications were made to the organization of requirements within the document. The 2017 edition includes the f

31、ollowing revisions: (1) The last two sentences of 7.1.4 have been removed referencing the guidance document is sufcient without getting into the details of the document itself. (2) Because Annex C in previous editions did not address recommendations for residential re sprinkler systems in a manner similar to what is currently provided for home smoke alarms, language has been added to address maintenance and testing of NFPA 13D systems by directing the owner to the practices recommended in NFPA 13D. (3) References have been appropriately updated.