NFPA-497 › Complete Document History
Recommended Practice for the Classification of Flammable Liquids, Gases, or Vapors and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas
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2024 EDITION - Classification of Flammable Liquids, Gases, or Vapors and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas - Jan. 1, 2024
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Obsolete Revision Information: |
2021 EDITION - Classification of Flammable Liquids, Gases, or Vapors and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas - April 4, 2020
2017 EDITION - Classification of Flammable Liquids, Gases, or Vapors and of Hazardous (Classified) Locations - June 2, 2016
2012 EDITION - Classification of Flammable Liquids, Gases, or Vapors and of - Jan. 1, 2012
2008 EDITION - Classification of Flammable Liquids, Gases, or Vapors and of - Jan. 1, 2008
2004 EDITION - PDF FORMAT ONLY - Jan. 1, 2004
1997 EDITION - PDF FORMAT ONLY - Aug. 15, 1997
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