NFPA 497M : 1991
Superseded
Superseded
View Superseded by
CLASSIFICATION OF GASES, VAPORS AND DUSTS FOR ELECTRICAL EQUIPMENT IN HAZARDOUS (CLASSIFIED) LOCATIONS
Published date
01-12-2013
Publisher
Superseded date
07-23-2013
Superseded by
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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
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.
| DevelopmentNote |
497M is also now included within NFPA 497 & NFPA 499
|
| DocumentType |
Standard
|
| PublisherName |
National Fire Protection Association
|
| Status |
Superseded
|
| SupersededBy |
| 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 |
| NFPA 321 : 1991 | BASIC CLASSIFICATION OF FLAMMABLE AND COMBUSTIBLE LIQUIDS |
| NFPA 70 : 2017 | NATIONAL ELECTRICAL CODE |
| 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 |
Summarise
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