NFPA 497M : 1991
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
CLASSIFICATION OF GASES, VAPORS AND DUSTS FOR ELECTRICAL EQUIPMENT IN HAZARDOUS (CLASSIFIED) LOCATIONS
23-07-2013
12-01-2013
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Superseded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 |
| 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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