NFPA 497:2027
Current
Current
The latest, up-to-date edition.
Recommended Practice for the Classification of Flammable Liquids, Gases, or Vapors and of Hazardous (Classified)Locations for Electrical Installations in Chemical Process Areas
Published date
06-05-2026
Publisher
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This recommended practice applies to those locations where flammable gases or vapors, flammable liquids, or combustible liquids are processed or handled; and where their release into the atmosphere could result in their ignition by electrical systems or equipment.
| DocumentType |
Standard
|
| PublisherName |
National Fire Protection Association
|
| Status |
Current
|
| Supersedes |
| ASTM D 323 : 2026 | Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method) |
| NFPA 30:2024 | Flammable and Combustible Liquids Code |
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