1、NFPA484 Standard for Combustible Metals 2015 Edition NFPA, 1 Batterymarch Park, Quincy, MA 02169-7471 An International Codes and Standards Organization 1/14ISBN: 978-145590907-0 (Print)ISBN: 978-145590947-6 (PDF)IMPORTANT NOTICES AND DISCLAIMERS CONCERNING NFPASTANDARDS NOTICE AND DISCLAIMER OF LIAB
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29、 www.nfpa.org/freeaccess.Copyright 2014 National Fire Protection Association. All Rights Reserved.NFPA484Standard forCombustible Metals2015 EditionThis edition of NFPA 484, Standard for Combustible Metals, was prepared by the TechnicalCommittee on Combustible Metals and Metal Dusts and released by t
30、he Correlating Commit-tee on Combustible Dusts. It was issued by the Standards Council on April 29, 2014, with aneffective date of May 19, 2014, and supersedes all previous editions.This edition of NFPA 484 was approved as an American National Standard on May 19, 2014.Origin and Development of NFPA
31、484The 2002 edition of NFPA 484, then titled Standard forCombustible Metals, Metal Powders, andMetal Dusts, was a comprehensive combustible-metal fire safety document. It was created bytaking the requirements of the metals standards NFPA 480, Standard for the Storage, Handling,and Processing of Magn
32、esium Solids and Powders; NFPA 481, Standard for the Production, Processing,Handling, and Storage of Titanium; NFPA 482, Standard for the Production, Processing, Handling,and Storage of Zirconium; NFPA 485, Standard for the Storage, Handling, Processing, and Use ofLithium Metal; NFPA 65, Standard fo
33、r the Processing and Finishing of Aluminum; and NFPA 651,Standard for the Machining and Finishing of Aluminum and the Production and Handling of Alumi-num Powders, and making them into individual chapters in NFPA 484. Chapter 10 was writtento address combustible metals not covered by one of the meta
34、l-specific chapters. Additionally,a metal-specific chapter was written for tantalum because of its increased use. Thus, NFPA 484provided safety requirement, including processing, storage, handling, dust collection, house-keeping, and fire protection, for all combustible metals.The 2006 edition of NF
35、PA 484, Standard for Combustible Metals, contained several majorchanges, including a new title. A new chapter, Chapter 4, gave test requirements for classifyinga material as a combustible metal. Other new chapters were Chapter 5, which addressed alkalimetals; Chapter 8, which addressed niobium; and
36、Chapter 13, which consolidated the fireprotection requirements given in Chapters 5 through 12.The 2009 edition of NFPA 484 contained the following changes:(1) Addition of a new Chapter 14, Combustible Metal Recycling Facilities(2) Addition of thresholds in Table 1.1.9, for applicability of the docum
37、ent; prior to thischange the standard applied to any amount of a combustible metal(3) Updates to the recommended suppression materials in Table A.13.3.3.The 2012 edition of NFPA 484 contained the following changes:(1) A unified format was applied for chapter-to-chapter consistency for the individual
38、 com-bustible metals in the document.(2) New definitions were added for dust explosion and dust flash-fire hazard area and anumber of particular forms, including metal dust, fines, superfines, ultrafines, flakes,paste, and ribbon. A definition for screening test was also added. The Committee clari-f
39、ied when the standard would apply rather than when the standard would not apply. Newinformation was included in Chapter 16 to clarify the testing and classification of poten-tially combustible metals.(3) Management of change requirements was added to chapters where it was not previouslyidentified as
40、 a requirement.(4) New information was included on wet dust collection systems. Additional informationwas added addressing housekeeping, an important issue for the prevention of fires andexplosions. Personal protective equipment (PPE) requirements were identified.(5) Chapter 15, Fire Prevention, Fir
41、e Protection, and Emergency Response, remained retro-active for all of the specific metal chapters and for the general metal chapter.4841NFPA and National Fire Protection Association are registered trademarks of the National Fire Protection Association, Quincy, Massachusetts 02169.(6) Chapter 16, Co
42、mbustible Metal Recycling Facilities, was retroactive. Additional information was added to addressemergency response requirements.(7) Hazard analysis requirements were applicable to all metal chapters.(8) A new chapter on performance-based design was added.The 2015 edition of NFPA 484 revises a prov
43、ision in Chapter 1 that establishes a framework for the protection ofmixtures of metals and other combustible dusts and includes revised definitions in Chapter 3. Chapter 4 includesrevised procedures for material characterization and determining combustibility and explosibility for metal dusts. Aspa
44、rt of those requirements, test data or historical data are permitted to be used. Chapter 5 now includes requirementsfor management systems elements, such as management of change, hazard analysis, and personal protective equip-ment. As part of an effort to consolidate fundamental requirements within
45、dedicated chapters, ignition controlsources such as hot work and static electricity are moved from Chapter 6 to Chapter 8, now titled Control of IgnitionSources. Chapter 6 includes new requirements on emergency response and preparedness. In Chapter 7, the Commit-tee established a threshold for fugit
46、ive dust accumulations, which is used to trigger specific requirements related todust hazard control. Chapter 9 has been modified to include new requirements for pneumatic conveying. The Com-mittee also modified Chapters 11 through 18 by moving requirements common for all the metal types (such as PP
47、E,management of change, dust collection, ignition sources, and hazard analysis) to one of the fundamental chapters(Chapters 4 through 9). The Committee added acceptance criteria to Chapter 19 for metal recycling.4842 COMBUSTIBLE METALS2015 EditionCorrelating Committee on Combustible DustsKevin Kreit
48、man, ChairCity of Redding Fire Department, CA EChris Aiken, Cargill, Inc., MN UMatthew J. Bujewski, MJB Risk Consulting, MO SEJohn M. Cholin, J. M. Cholin Consultants Inc., NJ SEGregory F. Creswell, Titanium Metals Corporation(TIMET), PA MScott G. Davis, GexCon US, MD SEHenry L. Febo, Jr., FM Global
49、, MA IWalter L. Frank, Frank Risk Solutions, Inc., DE SEDonald Hayden, Closure Systems International, IN UEdward R. LaPine, Aon Fire Protection EngineeringCorporation, AZ IJack E. Osborn, Airdusco, Inc., TN MGeorge Petino, Jr., Hazards Research Corporation, Inc.,NJ URep. Mars Inc.Bill Stevenson, CV Technology, Inc., FL MJerome R. Taveau, Fike Corporation, MO MAlternatesCraig Froehling, Cargill, Inc., MN U(Alt. to C. Aiken)Dale C. Hansen, Harrington Group, Inc., GA U(Alt. to G. Petino, Jr.)Jason Krbec, CV Technology, Inc., FL M(Alt. to B. Stevens
