It’s critical to accurately classify flammable liquids, gases, and vapors, as well as hazardous locations for electrical installations in chemical process areas, to assess the level of risks and establish safety practices. NFPA 497 is an essential resource for anyone in manufacturing, chemical processing, agriculture, or other industries that must determine ignitability hazards and assist in selecting equipment and systems for safe use.

The release of flammable and combustible substances in areas with electrical systems or equipment can result in a potentially destructive incident. NFPA 497, Recommended Practice for the Classification of Flammable Liquids, Gases, or Vapors and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas, delivers broad-based criteria for better safeguarding locations that handle these substances.

This vital safety document offers guidance for:

• Assessing ignitability hazards in chemical process areas
• Selecting the appropriate electrical systems and equipment for optimal safety
• Parameters used to classify the extent of a hazardous location

Key Aspects and Benefits of NFPA 497-2027 Include: 

• New and updated definitions and guidance