2019 NFPA 67 Guide - Current Edition
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  • Description

    The presence of flammable vapor mixtures in industrial piping systems increases the risk for explosions. Safeguard people and facilities with the practical fire protection framework outlined in NFPA 67.

    NFPA® 67, Guide on Explosion Protection for Gaseous Mixtures in Pipe Systems gives designers, engineers, contractors, installers, and facility managers invaluable support for better ensuring safety in any facility with piping systems that may contain flammable gases where there is potential for ignition. It's an essential resource for anyone who works with process piping, vapor recover system piping, gas venting piping and manifolds, gas piping for water electrolysis and fuel cell systems, flare systems, and other types of piping systems.

    Design, install, and operate explosion protection systems for piping, using the latest practices developed by experts to:

    • Prevent, contain, suppress, and/or vent explosions
    • Avoid Deflagration-to-Detonation Transition (DDT)
    • Contain detonations
    • Minimize damage due to explosions

    The 2019 edition of NFPA 67 provides broader coverage.

    • All-new text identifies and addresses three additional applications where there is potential for flammable gas formation.
    • A new annex provides examples of applying the equations for suitable pipe wall thickness for pipe wall elastic response to stable detonations.
    • Important clarifications make the Guide easier to understand and apply.

    NFPA 67 is an important resource for everyone involved with fire and explosion safety in facilities where piping systems are installed. (Print, 48 pp., 2019)

     

    Interested in other editions of NFPA 67? Use the drop down menu above to select the edition year you need.

  • Table of Contents (2019 Current Edition)
    NFPA<sup>®</sup> 67 Guide on Explosion Protection for Gaseous Mixtures in Pipe Systems 2019 Edition

    NFPA® 67 Guide on Explosion Protection for Gaseous Mixtures in Pipe Systems, 2019 Edition

    Chapter 1 Administration
    1.1 Scope.
    1.2 Purpose.
    1.3 Piping Installation and Maintenance.
    1.4 Applications.
    Chapter 2 Referenced Publications
    2.1 General.
    2.2 NFPA Publications.
    2.3 Other Publications.
    2.4 References for Extracts in Advisory Sections.
    Chapter 3 Definitions
    3.1 General.
    3.2 NFPA Official Definitions.
    3.3 General Definitions.
    Chapter 4 Fundamentals of Deflagrations
    4.1 General.
    4.2 Flammable Limits.
    4.3 Burning Velocity.
    4.4 Flame Speed.
    4.5 Mixtures.
    Chapter 5 Principles of Detonations
    5.1 Properties.
    5.2 Detonation Cells and Mixture Composition Limits.
    5.3 Chapman-Jouguet (CJ) Detonations.
    5.4 Detonation Development from Deflagration.
    5.5 Direct Initiation of a Detonation.
    5.6 Statement on Mixtures. (Reserved)
    Chapter 6 Detonation Prevention
    6.1 Detonation Prevention by Composition Control.
    6.2 Deflagration Intervention.
    Chapter 7 Detonation Containment
    7.1 General.
    7.2 Detonation Forces on Pipes.
    7.3 CJ Pressure.
    7.4 Reflected Pressure Waves.
    7.5 Detonation Containment in Pipes.
    7.6 Detonations in Large Structures. (Reserved)
    7.7 Pipe Structural Response to Detonation Loads.
    Chapter 8 Detonation Propagation Across Boundaries
    8.1 General — Detonation Propagation Across Boundaries. (Reserved)
    8.2 Flame Quenching.
    8.3 Minimum Opening Diameter for Detonation Propagation.
    Chapter 9 Mitigation of Detonation Effects
    9.1 Passive Detonation Arresters.
    9.2 Active Detonation Arrester Systems.
    9.3 Detonation Arrester Systems.
    9.4 Water Sprays.
    Chapter 10 Applications of Passive Detonation Protection Strategies
    10.1 Underground Storage Vessel.
    10.2 Aboveground Storage Vessel.
    10.3 Protection of Process Unit and Tank Farm from Thermal Oxidizer.
    10.4 Protection Strategy for a Carbon Adsorption Unit.
    10.5 Protection Strategy for Equipment (Blowers, Vacuum Pumps, etc.).
    10.6 Selecting Flame Arresters for Actual Process Conditions.
    Chapter 11 Management of Change
    11.1 Procedures for Management of Change.
    Chapter 12 Installation, Inspection, and Maintenance of Piping Explosion Protection Systems
    12.1 General.
    12.2 Design Parameters and Documentation.
    12.3 Installation.
    12.4 Inspection.
    12.5 Availability of Explosion Protection System Documentation.
    12.6 Maintenance.
    12.7 Cleaning.
    12.8 Procedures After an Explosion Protection System Event.
    12.9 Recordkeeping.
    12.10 Personnel Safety and Training.
    Annex A Explanatory Material
    Annex B Examples of Calculations of Suitable Pipe Wall Thickness for Pipe Wall Elastic Response to Stable Detonations
    Annex C Informational References
  • Prior Editions

    2016 Edition

    NFPA 67 provides a fire protection framework for industrial piping systems that contain or may contain flammable vapor mixtures.

    Now in its second edition, NFPA 67, Guide on Explosion Protection for Gaseous Mixtures in Pipe Systems provides invaluable support for designers, engineers, contractors, installers, and facility managers responsible for safety in facilities with piping systems that may contain flammable gases where there is potential for ignition. It's an essential resource for anyone who works with process piping, vapor recover system piping, gas venting piping and manifolds, gas piping for water electrolysis and fuel cell systems, flare systems, and other types of piping systems.

    Confidently design, install, and operate explosion protection systems for piping, using the latest practices developed by experts to:

    • Prevent, contain, suppress, and/or vent explosions
    • Avoid Deflagration-to-Detonation Transition (DDT)
    • Contain detonations
    • Minimize damage due to explosions

    Advance your knowledge with the updated 2016 edition of NFPA 67.

    • An expanded section addressing the detonation forces on pipes provides designers with a better description of the detonation pressure wave phenomena.
    • New guidance on the proper application of detonation arresters is useful for both designers and installers.
    • New references addressing the design of piping systems outside the Guide's scope help direct users to the correct NFPA® code or standard.

    NFPA 67 is an important resource for everyone involved with fire and explosion safety in facilities where piping systems are installed. (Softbound, 37 pp., 2016)

     

    Interested in other editions of NFPA 67? Use the drop down menu above to select the edition year you need.

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