Area classifications
Hazardous Locations Design Consulting


Generally speaking, all facilities using potentially explosive materials require a documented hazardous area analysis and classification. This includes process industries involving potential combustible dusts, which require a Dust Hazard Analysis (DHA) to be conducted. Our consultants can assist with performing and documenting these area classifications for your facility.

Our experience is too extensive to fully describe. Below is a partial list of of the area classification (and related) standards we have used:

NFPA NFPA 30: Flammable and Combustible Liquids Code
NFPA 33: Standard for Spray Application Using Flammable or Combustible Materials
NFPA 34: Standard for Dipping and Coating Processes Using Flammable or Combustible Liquids
NFPA 35: Standard for the Manufacture of Organic Coatings
NFPA 36: Solvent Extraction Plants
NFPA 61: Fires and Dust Explosions in Agricultural and Food Processing Facilities
NFPA 70: National Electrical Code
NFPA 484: Standard for Combustible Metals
NFPA 497: Recommended Practice for the Classification of Flammable Liquids, Gases, or Vapors and of Hazardous (Classified) Locations
NFPA 499: Recommended Practice for the Classification of Combustible Dusts and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas
NFPA 652: Fundamentals of Combustible Dusts
NFPA 654: Prevention of Fire and Dust Explosions from the Manufacturing, Processing and Handling of Combustible Particulate Solids
NFPA 664: Prevention of Fires and Explosions in Wood Processing and Woodworking Facilities

Harmonized Standards IEC 60079-10-1: Classification of areas - Explosive gas atmospheres
IEC 60079-10-2: Classification of areas - Combustible dust atmospheres

API API RP 500: Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Division 1 and Division 2
API RP 505: Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Zone 0, Zone 1, and Zone 2

Department of Energy DOE-STD-1212-2012: Explosives Safety

Other standards EI IP 15: Area classification code for installations handling flammable fluids
AS-NZS 2430.3.7: Area classification - Landfill, sewage treatment and pumping
CSA B149.6: Interim Code for Anaerobic Digesters
ESA ICoP 2: Area Classification for Landfill Gas Extraction, Utilisation and Combustion
IGEM/SR/25: Hazardous area classification of Natural Gas installations
Code for Electrical Installations at Oil and Gas Facilities

If you do not see the standard you are interested in, chances are we have used it! Please contact us for more information, or check out our Hazardous Locations, Ordinary Locations and Performance standards pages.

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