2020 NFPA 664 Standard - Current Edition
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  • Description

    Get the knowledge to help safeguard wood processing and woodworking facilities from fire and explosions with NFPA 664, 2020 edition.

    The presence of dust, wood chips, particles, and debris in a work environment can significantly raise risks to life and property. Since 1930, NFPA has been active in providing the information and provisions required to overcome the challenges of wood dust explosion hazards. NFPA 664, Standard for the Prevention of Fires and Explosions in Wood Processing and Woodworking Facilities, offers comprehensive criteria for designing, operating, and better protecting facilities that process wood or manufacture wood products.

    The standard is for use in industrial, commercial, and institutional settings and applies to facilities that:

    • House woodworking shops
    • Process wood or manufacture wood products creating wood chips, particles, or dust
    • Process wood for chips
    • Use wood or other cellulosic fiber as a substitute for or additive to wood fiber
    • Have processes that create wood chips, particles, or dust occupying an area larger than 5,000 square feet (465 square meters)
    • Have an aggregate dust collection flow rate greater than 1500 cubic feet per minute (2549 cubic meters per hour)

    Select provisions are applicable for some facilities beyond the scope of the document and should be identified through the performance of a hazard and risk analysis.

    The 2020 edition of the standard offers the latest requirements for specialized dust hazard mitigation.

    NFPA 664 and other codes and standards on dust control for risk prevention must evolve to deliver the appropriate support to those charged with protecting facilities. This document is updated to be in closer alignment with NFPA 652, Standard on the Fundamentals of Combustible Dust, including the reorganization of all chapters.

    Additional notable changes include:

    • Revised definitions for deflagrable wood dust and dry nondeflagrable wood dust along with the requirements for assessing hazards based on particle size and moisture content
    • Added provisions for conducting a documented risk assessment as a compliance option
    • Updated requirements for damage-limiting construction to refer to resources where a complete treatment is specified
    • Changed surface temperature requirements to depend on the dust surface ignition temperature or the dust-cloud ignition temperature of the material present, rather than having one maximum temperature for all processes
    • Revised requirements for blowdown to align with NFPA 652 and OSHA requirements for personnel safety

    Improve fire and life safety in woodworking and wood manufacturing facilities by complying with the latest provisions for dust control.

    This standard is an indispensable resource for facilities that process and manufacture wood and for fire marshals, fire and building departments, and AHJs responsible for inspections and regulation. Help protect lives, property, and commodities by referencing NFPA 664, Standard for the Prevention of Fires and Explosions in Wood Processing and Woodworking Facilities. Place your order for the 2020 edition today.

  • Table of Contents (2020 Current Edition)

    NFPA® 664 Standard for the Prevention of Fires and Explosions in Wood Processing and Woodworking Facilities, 2020 Edition

    Chapter 1 Administration
    1.1 Scope.
    1.2 Purpose.
    1.3 Application.
    1.4 Conflicts.
    1.5 Retroactivity.
    1.6 Equivalency.
    1.7 Units and Formulas.
    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 General Requirements
    4.1 General.
    4.2 Objectives.
    4.3 Compliance Options.
    Chapter 5 Hazard Identification
    5.1 Hazard Identification.
    Chapter 6 Performance-Based Design Option
    6.1 General Requirements.
    6.2 Risk Component and Acceptability. (Reserved)
    6.3 Performance Criteria.
    6.4 Design Fire Scenarios.
    6.5 Evaluation of Proposed Design.
    6.6 Safety Factors.
    Chapter 7 Hazards Analysis
    7.1 Hazards Analysis.
    Chapter 8 Management Systems
    8.1 Retroactivity.
    8.2 General. (Reserved)
    8.3 Operating Procedures and Practices.
    8.4 Housekeeping.
    8.5 Hot Work.
    8.6 Personal Protective Equipment.
    8.7 Inspection, Testing, and Maintenance.
    8.8 Training and Hazard Awareness.
    8.9 Contractors and Subcontractors.
    8.10 Emergency Planning and Response.
    8.11 Incident Investigation.
    8.12 Management of Change.
    8.13 Record Retention.
    Chapter 9 Hazard Management: Mitigation and Prevention
    9.1 Inherently Safe Designs. (Reserved)
    9.2 Building Design.
    9.3 Equipment Design.
    9.4 Ignition Source Control.
    9.5 Reserved.
    9.6 Dust Control.
    9.7 Explosion Prevention/Protection.
    9.8 General Fire Protection.
    Chapter 10 Thermal Oil Heating Systems
    10.1 Hazard Determination and Design Criteria.
    10.2 General Criteria.
    10.3 Location and Construction.
    10.4 Heaters.
    10.5 Piping.
    10.6 Expansion Tank.
    10.7 Storage Tanks.
    10.8 Safety Controls and Interlocks.
    10.9 Fuel Burner Controls and Interlocks.
    10.10 Operational Considerations.
    10.11 Fire Protection.
    Chapter 11 Storage
    11.1 General.
    11.2 Indoor Dry, Fine Particulate Storage.
    11.3 Wood Scrap or Wood Waste Processing and Disposal.
    Chapter 12 Special Considerations (Reserved)
    Annex A Explanatory Material
    Annex B Explosion Protection
    Annex C Informational Primer on Spark Detection and Extinguishing Systems
    Annex D Conveying System Isolation
    Annex E Automatic Water Spray Deluge Protection for Dryer Systems
    Annex F Informational References
  • Prior Editions

    2017 Edition

    The 2017 edition of NFPA 664 aligns with NFPA 652, to help you provide appropriate dust control measures and improve safety in wood processing and woodworking facilities.

    Help protect lives, property, and commodities from the risks of dust-related fires and explosions. Fire and life safety in woodworking facilities demand special dust hazard mitigation using the 2017 edition of NFPA 664, Standard for the Prevention of Fires and Explosions in Wood Processing and Woodworking Facilities. This Standard presents the latest requirements for the construction, operation, and protection of industrial, commercial, or institutional facilities that process wood or manufacture wood products.

    NFPA 664 is a "must" for industrial and commercial facilities.

    This Standard is essential in facilities that house woodworking shops as well as in wood processing facilities that manufacture wood products, and in facilities that process wood, creating wood chips, particles, or dust that occupy areas greater than 5,000 sq. ft. (465 sq. m), or those that have an aggregate dust collection flow rate greater than 1500 cu. ft. per minute (2549 cu m/hr).

    Changes in the 2017 edition align with the recently issued NFPA 652,Standard on the Fundamentals of Combustible Dust.

    • Definitions correlate with those in NFPA 652.
    • Added objectives in Chapter 4: General Requirements are aligned with those of other industry and commodity-specific combustible dust standards, including NFPA 652.
    • A clarified scope indicates that NFPA 664 addresses carpentry shops that exceed certain size thresholds, in addition to other types of woodworking and wood processing facilities.
    • Modifications to the exemption language meets Manual of Style for NFPA Technical Committee Documents

    NFPA 664 and other NFPA standards on dusts will continue to evolve to provide comprehensive support for fire marshals, fire/building departments, and other AHJs who regulate facilities and conduct inspections. (Print, 86 pp., 2017) 

    Interested in other editions of NFPA 664? Use the drop down menu above to select the edition year you need.

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