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  • NFPA 497M : 1991

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    CLASSIFICATION OF GASES, VAPORS AND DUSTS FOR ELECTRICAL EQUIPMENT IN HAZARDOUS (CLASSIFIED) LOCATIONS

    Available format(s): 

    Superseded date:  23-07-2013

    Language(s): 

    Published date:  12-01-2013

    Publisher:  National Fire Protection Association

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    Table of Contents - (Show below) - (Hide below)

    Chapter 1 General
    1.1 Scope
    1.2 Purpose
    1.3 Definitions
    Chapter 2 Class I materials - gases and vapors
    Chapter 3 Class II materials - dusts
    Chapter 4 Referenced publications
    Appendix A
    Appendix B Bibliography
    Appendix C Referenced publications
    Index

    Abstract - (Show below) - (Hide below)

    Specifies group classifications for selected gases, vapors, and dusts, as described in Article 500 of NFPA 70, to aid engineers in specifying the proper electrical equipment for hazardous (classified) locations. Also gives definitions and appendices.

    General Product Information - (Show below) - (Hide below)

    Development Note 497M is also now included within NFPA 497 & NFPA 499
    Document Type Standard
    Publisher National Fire Protection Association
    Status Superseded
    Superseded By

    Standards Referenced By This Book - (Show below) - (Hide below)

    API 500B : 88 ERRATA RECOMMENDED PRACTICE FOR CLASSIFICATION OF LOCATIONS FOR ELECTRICAL INSTALLATIONS AT DRILLING RIGS & PRODUCTION FACILITIES ON LAND & ON MARINE FIXED & MOBILE PLATFORMS
    NFPA 49 : 1994 HAZARDOUS CHEMICALS DATA
    ISA 12.10 : 1988 AREA CLASSIFICATION IN HAZARDOUS (CLASSIFIED) DUST LOCATIONS
    NFPA 497B : 1991 RECOMMENDED PRACTICE FOR THE CLASSIFICATION OF CLASS II HAZARDOUS (CLASSIFIED) LOCATIONS FOR ELECTRICAL INSTALLATIONS IN CHEMICAL PROCESS AREAS

    Standards Referencing This Book - (Show below) - (Hide below)

    NFPA 321 : 1991 BASIC CLASSIFICATION OF FLAMMABLE AND COMBUSTIBLE LIQUIDS
    NFPA 70 : 2017 NATIONAL ELECTRICAL CODE
    ASTM D 93 : 2016-07 TEST METHODS FOR FLASH POINT BY PENSKY-MARTENS CLOSED CUP TESTER
    NFPA 30 : 2018 FLAMMABLE AND COMBUSTIBLE LIQUIDS CODE
    NFPA 325M : 1991 FIRE HAZARD PROPERTIES OF FLAMMABLE LIQUIDS, GASES, AND VOLATILE SOLIDS
    ASTM E 659 : 2015 : REDLINE Standard Test Method for Autoignition Temperature of Chemicals
    ASHRAE 15 : 2013 SAFETY STANDARD FOR REFRIGERATION SYSTEMS
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