1、 NFPA 664 Standard for the Prevention of Fires and Explosions in Wood Processing and Woodworking Facilities 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
2、 (“NFPA 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 a
3、nd other 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 discla
4、ims liability for any personal injury, property 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 acc
5、uracy or completeness of any information published 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 so
6、meone 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 comp
7、liance 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 so
8、lely 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 A
9、mendments 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 Tentativ
10、e Interim 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.664-1 NFPA, and National Fire Protection Association are reg
11、istered trademarks of the National Fire Protection Association, Quincy, Massachusetts, 02169 Copyright 2016 National Fire Protection Association . All Rights Reserved. NFPA 664 Standard for the Prevention of Fires and Explosions in Wood Processing and Woodworking Facilities 2017 Edition This edition
12、 of NFPA 664, Standard for the Prevention of Fires and Explosions in Wood Processing and Woodworking Facilities, was prepared by the Technical Committee on Wood and Cellulosic Materials Processing and released by the Correlating Committee on Combustible Dusts. It was issued by the Standards Council
13、on May 13, 2016, with an effective date of June 2, 2016, and supersedes all previous editions. This edition of NFPA 664 was approved as an American National Standard on June 2, 2016. Origin and Development of NFPA 664 NFPA activity in the eld of wood dust explosion hazards dates back to 1930, when w
14、ork on Code on Wood Flour Manufacturing (No. 662) was initiated. The rst edition was adopted in 1931, and subsequent editions were issued in 1940, 1942, 1946, and 1949. A separate code on Woodworking Plants (No. 663) was added in 1934 and reissued in 1952 and 1959. In 1960, the two codes were combin
15、ed into a new one, Code for the Prevention of Dust Explosions in Woodworking and Wood Flour Manufacturing Plants (No. 664), and revised editions were adopted in 1962, 1971, 1981, 1987, 1993, and 1998. In the 2002 edition, NFPA 664, Standard for the Prevention of Fires and Explosions in Wood Processi
16、ng and Woodworking Facilities, was expanded to include all the re hazards associated with wood processing facilities (the occupancy), not just the dust (the commodity). The scope was modied to exclude very small facilities that represented substantially smaller perceived risk based on explicit facil
17、ity area and ow rate criteria. The standard was also revised to allow a performance-based design approach as an alternative to the prescriptive design criteria itemized in the standard. The section on dust collectors was revised to permit the use of enclosureless dust collectors, based upon specic d
18、esign criteria. The standard was also modied to comply with the updated Manual of Style for NFPA Technical Committee Documents. The 2007 edition was modied to include requirements for a formal documented hazard analysis as the basis for the applicability of the prescriptive design criteria in the st
19、andard. Additional requirements were added for what is required of a designer who elects to use performance-based design methods and to bring these requirementsinto conformance with the performance-based design requirements in NFPA 101 , Life Safety Code . Advisory material was added regarding choic
20、es for placement of an abort gate with respect to the dust collector. The 2012 edition was modied to include a new denition of deagration hazard in Chapter 3. A new methodology for the determination of a deagration hazard using settled bulk density to determine an allowable thickness for combustible
21、 wood dust accumulations was added to Chapter 4. Detailed instructions on how to collect the dust sample for the new methodology were added to Annex A. In addition, the existing denition of enclosureless dust collector was revised, along with the denitions for deagrable wood dust, dry nondeagrable w
22、ood dust, and oor sweep to coincide with the requirements in the standards that use those terms. A new section containing requirements for hazard determination was added to Chapter 8, including the use of access doors for inspection of and re department access to ductwork. Existing requirements for
23、use of explosion protection systems and deagration venting on metal ducts located both indoors and outdoors were revised in Chapter 8.PREVENTION OF FIRES AND EXPLOSIONS IN WOOD PROCESSING AND WOODWORKING FACILITIES 664-2 2017 Edition The existing maximum explosible concentration (MEC) percentage for
24、 wood dust was revised from 75 percent to 25 percent for fans, blowers, and air-moving devices, to be consistent with NFPA 69, Standard on Explosion Prevention Systems. In addition, the requirements for dust collectors with deagration hazards to be equipped with a deagration suppression system were
25、revised to be consistent with NFPA 69, and the requirements for deagration relief vents on dust collectors were revised to be consistent with NFPA 68, Standard on Explosion Protection by Deagration Venting. The requirements for recycling of air- material separator exhaust into buildings were revised
26、. New material on control system design for solid fueled burners was added to Annex A. The 2017 edition contains changes designed to begin alignment with the newly issued NFPA 652, Standard on the Fundamentals of Combustible Dust. Denitions used within the standard have been aligned with those in NF
27、PA 652. The objectives in Chapter 4 have been updated to align with those of the other industry and commodity-specic combustible dust standards, including NFPA 652. The scope of the standard has been claried to indicate that it includes carpentry shops that exceed certain size thresholds in addition
28、 to other types of woodworking and wood processing facilities. Exemption language has been modied to meet Manual of Style for NFPA Technical Committee Documents requirements. The work to align NFPA 664 with NFPA 652 will continue through the next revision cycle.COMMITTEE PERSONNEL 664-3 2017 Edition
29、 Correlating Committee on Combustible Dusts Kevin Kreitman, Chair Albany Fire Department, OR E Chris Aiken, Cargill, Inc., MN U Matthew J. Bujewski, MJB Risk Consulting, MO SE John M. Cholin, J. M. Cholin Consultants Inc., NJ SE Scott G. Davis, GexCon U.S., MD SE Henry L. Febo, Jr., FM Global, MA I
30、Walter L. Frank, Frank Risk Solutions, Inc., DE SE Robert C. Gombar, Baker Engineering & Risk Consultants, Inc., MD U Rep. U.S. Beet Sugar Association Donald Hayden, Closure Systems International, IN U Edward R. LaPine, Aon Fire Protection Engineering Corporation, AZ I Arthur P. Mattos, Jr., Global
31、Risk Consultants, NC SE Steve McAlister, Michelin Tire Corporation, SC U Jack E. Osborn, Airdusco, Inc., TN M Bill Stevenson, CV Technology, Inc., FL M Jrme R. Taveau, Fike Corporation, MO M Alternates Craig Froehling, Cargill, Inc., MN U (Alt. to Chris Aiken) Jason Krbec, CV Technology, Inc., FL M
32、(Alt. to Bill Stevenson) John A. LeBlanc, FM Global, MA I (Alt. to Henry L. Febo, Jr.) Adam Morrison, Fike Corporation, MO M (Alt. to Jrme R. Taveau) Nonvoting Matthew I. Chibbaro, U.S. Department of Labor, DC E Mark W. Drake, Liberty Mutual, KS I Rep. TC on Combustible Metals and Metal Dusts Willia
33、m R. Hamilton, U.S. Department of Labor, DC E (Alt. to Matthew I. Chibbaro) Paul F. Hart, American International Group, Inc. (AIG), IL I Rep. TC on Fundamentals of Combustible Dusts Timothy J. Myers, Exponent, Inc., MA SE Rep. TC on Agricultural Dusts Jason P. Reason, Lewellyn Technology, IN SE Rep.
34、 TC on Wood and Cellulosic Materials Processing Mark L. Runyon, Marsh Risk Consulting, OR I Rep. TC on Handling and Conveying of Dusts, Vapors, and Gases Susan Bershad, NFPA Staff Liaison This list represents the membership at the time the Committee was balloted on the nal text of this edition. Sinc
35、e that time, changes in the membership may have occurred. A key to classications 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. Commit
36、tee Scope: This Committee shall have primary responsibility for documents on the hazard identication, prevention, control, and extinguishment of res and explosions in the design, construction, installation, operation, and maintenance of facilities and systems used in manufacturing, processing, recycling, handling, conveying, or storing combustible particulate solids, combustible metals, or hybrid mixtures.
