NFPA 497-2021
Recommended Practice for the Classification of Flammable Liquids, Gases, or Vapors and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas (Effective Date: 04/04/2020)
- Standard No.
- NFPA 497-2021
- Release Date
- 2021
- Published By
- National Fire Protection Association (NFPA)
- Latest
- NFPA 497-2021
NFPA 497-2021 history
- 2021 NFPA 497-2021 Recommended Practice for the Classification of Flammable Liquids, Gases, or Vapors and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas (Effective Date: 04/04/2020)
- 2017 NFPA 497-2017 Recommended Practice for the Classification of Flammable Liquids@ Gases@ or Vapors and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas (Effective Date: 06/02/2016)
- 0000 NFPA 497-2012
- 2008 NFPA 497-2008 Recommended Practice for the Classification of Flammable Liquids, Gases, or Vapors and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas Effective Date: 12/31/2007
- 2007 NFPA 497-2007 Recommended Practice for the Classification of Flammable Liquids, Gases, or Vapors and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas 2008 Edition
