Other U.S. hazardous locations certification requirements
The following is a list of U.S. hazardous locations documents (other than UL’s) that serve as requirements for UL's hazardous locations investigations.
Other U.S. standards writing organizations such as IEEE, ISA, MSHA, NEMA, NFPA, and the U.S. Coast Guard have developed these requirements. UL staff assists these organizations in the development and maintenance of their respective requirements (such as through participation on technical committees).
Institute of Electrical and Electronics Engineers (IEEE)
- IEEE 515-- Testing Design, Installation, and Maintenance of Electrical Resistance Heat Tracing for Industrial Applications
ISA
- ISA RP 12.6-- Wiring Practices for Hazardous (Classified) Locations Instrumentation - Part 1: Intrinsic Safety
- ISA S12.13.1-- Performance Requirements, Combustible Gas Detector
Mine Safety and Health Administration (MSHA)
- 30 CFR-- MINERAL RESOURCES (Parts 1 to 199)
National Electrical Manufacturers Association (NEMA)
- NEMA 250-- Enclosures for Electrical Equipment (1000 Volts Maximum)
National Fire Protection Association (NFPA)
- NFPA 70-- National Electrical Code (NEC)
- NFPA 33-- Spray Application Using Flammable and Combustible Materials
- NFPA 34-- Dipping and Coating Processes Using Flammable or Combustible Liquids
- NFPA 61-- Prevention of Fires and Dust Explosions in Agricultural and Food Products Facilities
- NFPA 65-- Processing and Finishing of Aluminum
- NFPA 68-- Venting of Deflagrations
- NFPA 69-- Explosion Prevention Systems
- NFPA 77-- Static Electricity
- NFPA 86-- Ovens and Furnaces
- NFPA 91-- Exhaust Systems for Air Conveying of Materials
- NFPA 48-- Storage, Handling, and Processing of Magnesium Solids and Powders
- NFPA 481-- Production, Processing, Handling and Storage of Titanium
- NFPA 482-- Zirconium Production, Processing, Handling, & Storage
- NFPA 496-- Purged & Pressurized Enclosures for Electrical Equipment
- NFPA 505-- Powered Industrial Trucks, Including Type Designations, Area of Use, Maintenance, and Operation
- NFPA 650-- Pneumatic Conveying Systems for Handling Combustible Materials
- NFPA 651-- Manufacture of Aluminum Powder
- NFPA 654-- Prevention of Fire and Dust Explosions in the Chemical, Dye, Pharmaceutical, and Plastics Industries
- NFPA 664-- Prevention of Fire and Explosions in Wood Processing and Woodworking Facilities
- NFPA 820-- Fire Protection for Wastewater Treatment and Collection Facilities
United States Coast Guard (USCG)
- 46 CFR-- SHIPPING (Subpart 111.105)
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