2017 NFPA 655 Standard - Current Edition
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  • Description

    Effectively mitigate the risks for sulfur fires and explosions using the 2017 edition of NFPA 655: Standard for Prevention of Sulfur Fires and Explosions.

    Use the essential steps and requirements outlined in NFPA 655: Standard for Prevention of Sulfur Fires and Explosions to eliminate or reduce hazards encountered in the crushing, grinding, and pulverizing of bulk and liquid sulfur. NFPA 655 also prescribes the safe handling of all forms of sulfur, including ground sulfur and molten sulfur. The Standard clarifies how to choose between prescriptive or performance-based options when applying NFPA 655.

    Changes in the 2017 edition of NFPA 655 help you understand and correctly address all types of hazards.

    • Changes to definitions and other material within the Standard correlate with NFPA 654: Standard for the Prevention of Fire and Dust Explosions from the Manufacturing, Processing, and Handling of Combustible Particulate Solids -- the Standard referenced by OSHA's Combustible Dust National Emphasis Program (NEP) for the purposes of identifying dust hazards and defining mitigation strategies that protect life and property.
    • Revisions clarify the scope of the document and its relationship to NFPA 654
    • Other changes address requirements for the use of steam in fire fighting

    Improve safety around bulk or liquid sulfur using the latest edition of NFPA 655. (Print, 36 pp., 2017)

     

    Interested in other editions of NFPA 655? Use the drop down menu above to select the edition year you need.

  • Table of Contents (2017 Current Edition)

    NFPA® 655 Standard for Prevention of Sulfur Fires and Explosions, 2017 Edition

    Chapter 1 Administration
    1.1 Scope.
    1.2 Purpose.
    1.3 Retroactivity.
    1.4 Equivalency.
    Chapter 2 Referenced Publications
    2.1 General.
    2.2 NFPA Publications.
    2.3 Other Publications.
    2.4 References for Extracts in Mandatory Sections.
    Chapter 3 Definitions
    3.1 General.
    3.2 NFPA Official Definitions.
    3.3 General Definitions.
    Chapter 4 Handling Solid Sulfur in Bulk
    4.1 General.
    4.2 Identification of Deflagration Hazard Areas.
    4.3 Building Construction.
    4.4 Electrical Wiring and Equipment.
    4.5 Inert Gas.
    4.6 Conveyors and Collectors.
    4.7 Prevention of Ignition.
    4.8 Intermediate Bulk Containers for Solid Sulfur.
    4.9 Fire Fighting.
    Chapter 5 Handling of Liquid Sulfur at Normal Handling Temperatures
    5.1 General.
    5.2 Detection of Unsafe Conditions.
    5.3 Equipment Design.
    5.4 Open Flames and Sparks.
    5.5 Fire Fighting.
    Chapter 6 Handling of Liquid Sulfur and Sulfur Vapor at Temperatures Above 309°F (154°C)
    6.1 General.
    6.2 Operating Precautions and Equipment Design.
    Chapter 7 Fugitive Dust Control and Housekeeping
    7.1 Fugitive Dust Control.
    7.2 Housekeeping.
    Chapter 8 Training and Procedures
    8.1 Employee Training.
    8.2 Plan.
    8.3 Initial and Refresher Training.
    8.4 Certification.
    8.5 Contractors and Subcontractors.
    Chapter 9 Inspection and Maintenance
    9.1 General.
    9.2 Specific Equipment Maintenance.
    Annex A Explanatory Material
    Annex B Dust Layer Characterization and Precautions
    Annex C Informational References
  • Prior Editions

    2012 Edition

     

    Reduce the risks for sulfur fires and explosions with the expanded edition of NFPA 655: Standard for Prevention of Sulfur Fires and Explosions.

    Use the essential steps and requirements outlined in the 2012 NFPA 655 to eliminate or reduce hazards encountered in the crushing, grinding, and pulverizing of bulk and liquid sulfur. NFPA 655 also prescribes the safe handling of all forms of sulfur, including ground sulfur and molten sulfur.

    This edition introduces an alternative means for determining where in a facility a combustible dust hazardous condition exists. It also clarifies how to choose between prescriptive or performance-based options when applying NFPA 655.

    Other changes help you understand and correctly address hazards.

    • Clarification of the dust layer depth criterion for determining whether a combustible dust hazardous condition exists
    • New housekeeping requirements addressing the hierarchy of cleaning methods and the frequency of housekeeping based upon rate of accumulation of combustible dusts
    • Added requirements for employee training; and new rules applicable to contractors and subcontractors
    • Added PPE for flash fires, selected according to NFPA 2113: Standard on Selection, Care, Use, and Maintenance of Flame-Resistant Garments for Protection of Industrial Personnel Against Flash Fire
    • Annex B illustrating how to apply the methods for determining existence of combustible dust hazardous condition
    • Added Annex text explaining protection strategies against static electrical ignition concerns where intermediate bulk containers (IBC) are used for sulfur storage and transport

    Improve safety -- order the 2012 NFPA 655 today. (Softbound, 25 pp., 2012)

     

    Interested in other editions of NFPA 655? Use the drop down menu above to select the edition year you need.

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