On January 18, 2016, the National Fire Protection Association (NFPA) published the 2nd draft report for NFPA 499: Recommended Practice for the Classification of Combustible Dusts and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas. It is now open for a Notice of Intent to Make a Motion (NITMAM) until February 19, 2016 for those on a Committee Comment, Second Revision, or Second Correlating Revision. The purpose of NFPA 499 is to provide information on classifying combustible dusts and locations and provide recommended practices on proper selection of electrical equipment in hazardous (classified) locations per NFPA 70, National Electrical Code. NFPA 499 is a compendium document to Chapter 5 (Article 500) of NFPA 70 and does not supersede any requirements of other NFPA standards (e.g. NFPA 61, 68, 69, 654, 664, etc.).
The significant changes for the 2016 revision includes classifications and definitions for the following: Continue reading “NFPA 499 Revision Update” →