1、NFPA655 Standard for Prevention of Sulfur Fires and Explosions 2012 Edition NFPA, 1 Batterymarch Park, Quincy, MA 02169-7471 An International Codes and Standards Organization Become a MemberSubscribeto theRegister forSeminars, Webinars, and Online CoursesVisit theNFPA CatalogNOTICE AND DISCLAIMER OF
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25、onal Fire Protection Association. All Rights Reserved.NFPA655Standard forPrevention of Sulfur Fires and Explosions2012 EditionThis edition of NFPA 655, Standard for Prevention of Sulfur Fires and Explosions, was prepared bythe Technical Committee on Handling and Conveying of Dusts, Vapors, and Gases
26、. It was issuedby the Standards Council on December 13, 2011, with an effective date of January 2, 2012, andsupersedes all previous editions.This edition of NFPA 655 was approved as an American National Standard on January 2, 2012.Origin and Development of NFPA 655This standard was first presented t
27、o the Association as a progress report in 1938 by the Com-mittee on Dust Explosion Hazards. It was tentatively adopted in 1939. After some revision, it wasofficially adopted in 1940. Amendments were adopted in 1946, 1947, 1959, 1968, and 1971.In 1976, responsibility for the document was transferred
28、to the Technical Committee onFundamentals of Dust Explosion Prevention and Control. The Technical Committee com-pletely revised the 1971 edition to effect minor technical amendments and to editoriallyrevise the document to comply with the NFPA Manual of Style.Due to limited technological changes in
29、this subject area between 1982 and 1988, theCommittee reconfirmed the text as it had appeared in the 1982 version. Editorial changesand changes to allow the document to adhere more closely to the 1986 edition of the NFPAManual of Style, were incorporated into the 1988 edition.For the 1993 edition, t
30、he Committee made minor revisions to Chapter 2 for handlingfinely divided sulfur in bulk and minor revisions to the fire-fighting procedures to be usedwhen fighting fires involving sulfur.The 2001 edition contained editorial changes associated with incorporation of the 2000edition of the Manual of S
31、tyle for NFPA Technical Committee Documents. The Committee alsomade minor revisions to Chapter 6 to address operating precautions for pits and tank sectionsand to clarify protection for covered liquid sulfur storage tanks.The 2007 edition included a complete revision of the standard, which was highl
32、ighted by theaddition of three new chapters and the revision of Chapter 4, which combined the requirementsapplicable to both finely divided and coarse sulfur. These chapters reflected the Committeesefforts to expand the dust hazard control requirements within the standard. The new chapters Chapter 7
33、, Fugitive Dust Control and Housekeeping; Chapter 8, Training and Procedures; andChapter 9, Inspection and Maintenance were based upon dust hazard evaluation and controlprocesses found in NFPA 654, Standard for the Prevention of Fire and Dust Explosions from the Manufac-turing, Processing, and Handl
34、ing of Combustible Particulate Solids, 2006 edition. This edition also con-tained new requirements applicable to intermediate bulk containers (IBCs).Revisions to the 2012 edition of NFPA 655 focus on updates to the requirements in Chapter 4for solid sulfur to coordinate with combustible dust hazard
35、assessment and control. Key changesinclude:(1) Definitions for dust flash fire hazard area and dust explosion hazard area have been added.(2) Methods to determine where hazardous dust conditions exist have been added to be consis-tent with NFPA 654, Standard for the Prevention of Fire and Dust Explo
36、sions from the Manufacturing,Processing, and Handling of Combustible Particulate Solids.(3) Housekeeping requirements have been updated to include preferred methods and guid-ance on cleaning frequency.(4) Requirements for contractors and subcontractors have been added.(5) Personal protection equipme
37、nt (PPE) requirements related to flash fire hazard protectionhave been added.(6) Fire-fighting requirements have been modified to reflect changes in equipment.(7) References have been updated.(8) Annex commentary regarding flexible intermediate bulk containers (FIBC) use and cau-tions against static
38、 hazards have been added.6551NFPA and National Fire Protection Association are registered trademarks of the National Fire Protection Association, Quincy, Massachusetts 02169.Technical Committee on Handling and Conveying of Dusts, Vapors, and GasesWalter L. Frank, ChairFrank Risk Solutions, Inc., DE
39、SEWalter S. Beattie, AXA Matrix Risk Consultants, Inc.,PA IJohn M. Cholin, J. M. Cholin Consultants Inc., NJ SETony DiLucido, Zurich Risk Engineering Services, PA IVahid Ebadat, Chilworth Technology Inc., NJ SEHenry L. Febo, Jr., FM Global, MA ILarry D. Floyd, BASF/Ciba Specialty ChemicalsCorporatio
40、n, AL UHenry W. Garzia, UTC/Kidde-Fenwal, Inc., MA MJohn E. Going, Fike Corporation, MO MStephen T. Greeson, HSB Professional Loss Control,TX IDan A. Guaricci, ATEX Explosion Protection L.P., FL MPaul F. Hart, XL Global Asset Protection Services, IL IWilliam C. Hilton, Georgia-Pacific, GA UMark L. H
41、olcomb, Kimberly-Clark Corporation, WI UJerry J. Jennett, Georgia Gulf Sulfur Corporation,GA UDavid C. Kirby, Baker Engineering allequipment, floors, and walls shall be cleaned thoroughly; andall accumulations of dust shall be removed.4.7.6.3 After such work has been completed, a check shall bemade
42、to ensure that no cartridges or charges have been left onthe premises where they could enter equipment or be acci-dentally discharged after operation of the dust-producing ordust-handling machinery is resumed.4.7.6.4 Use of propellant-operated tools shall be controlledby a hot work permit system in
43、accordance with the require-ments of NFPA 51B, Standard for Fire Prevention During Welding,Cutting, and Other Hot Work.6559HANDLING SOLID SULFUR IN BULK2012 Edition4.8* Intermediate Bulk Containers for Solid Sulfur.4.8.1 The requirements of 4.8.2 through 4.8.4 shall be ap-plied retroactively.4.8.2*
44、Dispensing solid sulfur from intermediate bulk contain-ers shall only be performed under the following conditions:(1) A conductive (i.e., metallic) rigid intermediate bulk con-tainer (RIBC) shall be permitted to be used for dispens-ing into any flammable vapor, gas, dust, or hybrid atmo-spheres prov
45、ided the RIBC is electrically grounded with aresistance less than 1 megohm to ground.(2)*A Type C FIBC shall be permitted to be used for dispens-ing into any flammable vapor, gas, dust, or hybrid atmo-sphere for which the FIBC has been tested and foundsuitable, provided the FIBC is electrically grou
46、nded with aresistance less than 1 megohm to ground.(3)*A Type D FIBC shall be permitted to be used for dispensinginto flammable vapor, gas, dust, or hybrid atmospheres forwhich the FIBC has been tested and found suitable.(4)*Type A FIBC, Type B FIBC, or insulating RIBCs shall notbe permitted to be u
47、sed for solid sulfur applications, pro-cesses, or operations unless a documented risk evaluationassessing the electrostatic hazards, including the potentialpresence of hydrogen sulfide, is acceptable to the author-ity having jurisdiction.4.8.3* FIBCs that are listed or tested by a recognized testing
48、 or-ganization and are shown not to ignite flammable atmospheres,including hydrogen sulfide, during transfer shall be permitted tobe used.4.8.4 Documentation of test results shall be made available tothe authority having jurisdiction.4.9 Fire Fighting.4.9.1 Where the owner/operator chooses to assign
49、 an indus-trial fire brigade to respond to plant emergencies, the brigadeshall meet the requirements of NFPA 600, Standard on Indus-trial Fire Brigades.4.9.2 Nozzles.4.9.2.1* Portable spray hose nozzles that are listed or ap-proved for use on Class C fires shall be provided in areas thatcontain dust, to limit the potential for generating unnecessaryairborne dust during fire-fighting operations. 654:10.4.2.14.9.2.2 Straight-stream nozzles shall not be used on fires inareas where du
