2014 NFPA 69 Standard - Current Edition

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  • Description

    Prevent deflagration explosions due to combustible dust particles, gases or vapors with NFPA 69.

    Combustible dust, gases and vapors produced in industrial settings can pose a significant safety hazard. NFPA 69: Standard on Explosion Prevention Systems offers definitive guidance on explosion protection and prevention systems.

    This document is applicable to woodworking, grain processing (including sugar) and machining facilities, where combustible dust can spark explosions. It also covers facilities in which flammable liquids are used or petrochemical processing takes place -- and explosions due to combustible gases or vapors are a concern.

    NFPA 69 has widespread applicability. Among the equipment protected are pipes, ductwork, vents, dust collection systems and granaries. In addition, systems for explosion prevention, explosion isolation, oxidant concentration control, fuel concentration control and ignition control are all designed in accordance with this standard.

    The 2014 edition of NFPA 69 features:

    • Easier-to-understand explanations
    • Compatibility with NFPA 3: Recommended Practice for Commissioning and Integrated Testing of Fire Protection and Life Safety Systems terminology and other standards
    • Updated references and abstracts
    • New requirements for flow-actuated flap valves
    • A new annex on deflagration containment for two interconnected vessels

    It also provides valuable insight on:

    • Installing an explosion isolation valve or system
    • Designing equipment to contain an explosion
    • Controlling your process to ensure an explosive atmosphere doesn't develop
    • Installing an explosion suppression system
    • Controlling ignition sources in your process before an explosion occurs

    NFPA 69 is an essential resource for system designers, safety officers, insurers, municipal and state inspectors, and other professionals. Order your copy today to get the best guidance in the field on prevention and control of deflagrations. (Softbound, 79 pp., 2014)

     

    Interested in other editions of NFPA 69? Use the drop down menu above to select the edition year you need.

  • Table of Contents (2014 Current Edition)

    NFPA® 69 Standard on Explosion Prevention Systems, 2014 Edition

    Chapter 1 Administration
    1.1 Scope
    1.2 Purpose
    1.3 Application
    1.4 Retroactivity
    1.5 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 General Requirements
    4.1 Goal
    4.2 Objectives
    4.3 Compliance Options
    Chapter 5 Performance-Based Design Option
    5.1 General Requirements
    5.2 Performance Criteria
    Chapter 6 General Prescriptive Requirements
    6.1 Methods
    6.2 Limitations
    6.3 Factors to Be Considered
    6.4 Plans
    6.5 System Acceptance
    6.6 Inspection and Maintenance
    6.7 Housekeeping
    Chapter 7 Deflagration Prevention by Oxidant Concentration Reduction
    7.1 Application
    7.2 Design and Operating Requirements
    7.3 Purge Gas Sources
    7.4 Purge Gas Conditioning
    7.5 Piping Systems
    7.6 Application of Purge Gas at Points of Use
    7.7 Instrumentation
    Chapter 8 Deflagration Prevention by Combustible Concentration Reduction
    8.1 Application
    8.2 Basic Design Considerations
    8.3 Design and Operating Requirements
    8.4 Instrumentation
    Chapter 9 Predeflagration Detection and Control of Ignition Sources
    9.1 Application
    9.2 Limitations
    9.3 Optical Sensing System and Gas Sensing System Design Considerations
    9.4 Testing
    9.5 Protection System Design and Operation
    9.6 System Manufacturer's Additional Responsibilities
    9.7 Actuation of Other Devices and Systems
    9.8 Process Shutdown
    Chapter 10 Deflagration Control by Suppression
    10.1 Application
    10.2 Limitations
    10.3 Personnel Safety
    10.4 Basic Design Considerations
    10.5 Control Panels
    10.6 Detection Devices
    10.7 Electrically Operated Actuating Devices
    10.8 Suppressant and Suppressant Storage Containers
    Chapter 11 Deflagration Control by Active Isolation
    11.1 Application
    11.2 Isolation Techniques
    11.3 Personnel Safety
    11.4 Basic Design and Operation
    11.5 Detection Devices
    11.6 Electrically Operated Actuating Devices
    11.7 Control Panels
    Chapter 12 Deflagration Control by Passive Isolation
    12.1 Application
    12.2 Passive Isolation Techniques
    Chapter 13 Deflagration Control by Pressure Containment
    13.1 Application
    13.2 Design Limitations
    13.3 Design Bases
    13.4 Maintenance
    13.5 Threaded Fasteners
    13.6 Inspection After a Deflagration
    Chapter 14 Passive Explosion Suppression Using Expanded Metal Mesh or Polymer Foams
    14.1 Applications
    14.2 Foam and Mesh Requirements
    14.3 Expanded Metal Mesh and Polymer Foam Explosion Suppression Testing
    14.4 Expanded Metal Mesh or Polymer Foam Installations
    14.5 Expanded Metal Mesh or Polymer Foam Maintenance and Replacement
    Chapter 15 Installation, Inspection, and Maintenance of Explosion Prevention Systems
    15.1 General
    15.2 Installation
    15.3 Mechanical Installation
    15.4 Agent, Agent Storage Containers, Automatic Fast-Acting Valves, Flame Arresters, and Flame Front Diverters
    15.5 Electrical Installation
    15.6 System Acceptance
    15.7 Inspection
    15.8 Procedures Following System Actuation
    15.9 Recordkeeping
    15.10 Personnel Safety and Training
    15.11 Management of Change
    15.12 Maintenance
    Annex A Explanatory Material
    Annex B Control of Flammable Gas Mixtures by Oxidant Concentration Reduction and Combustible Concentration Reduction
    Annex C Limiting Oxidant Concentrations
    Annex D Ventilation Calculations
    Annex E Purging Methods
    Annex F Flame Arresters
    Annex G Deflagration Containment Calculation Method for Two Interconnected Vessels
    Annex H Informational References
    Index
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