NFPA 497 : 2017
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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 FLAMMABLE LIQUIDS, GASES, OR VAPORS AND OF HAZARDOUS (CLASSIFIED) LOCATIONS FOR ELECTRICAL INSTALLATIONS IN CHEMICAL PROCESS AREAS
01-01-2017
16-08-2021
Chapter 1 - Administration
Chapter 2 - Referenced Publications
Chapter 3 - Definitions
Chapter 4 - Classification of Combustible Materials
Chapter 5 - Classification of Class I (Combustible Material) Areas
Annex A - Explanatory Material
Annex B - Example of a Method for Determining
NEC Group Classification for Mixtures
Annex C - Informational References
Index
Gives information on specific flammable gases and vapors, flammable liquids, and combustible liquids whose relevant combustion properties have been sufficiently identified to allow their classification into the groups established by NFPA 70 (NEC), for proper selection of electrical equipment in hazardous (classified) locations.
| DevelopmentNote |
Formerly NFPA 497A and part of NFPA 497M. (06/2001) 2012 version is also available in Spanish; See NFPA 497 SPANISH. (12/2014)
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Standard
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| PublisherName |
National Fire Protection Association
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| Status |
Superseded
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