Standards

• The Occupational Safety and Health Administration (OSHA) and the National Fire Protection Association (NFPA) require the appropriate safety precautions be undertaken by any worker completing work on electrical equipment that may become energized. NFPA 70E standard requires a hazard analysis to be performed on any electrical equipment operating at 50 volts or higher.
  
  

Equipment

• The simplest way of ensuring the safety of areas capable of being affected by arc flash explosions is to de-energize electrical equipment that may become energized before beginning maintenance or repair work.
  
  

Safety

• In areas where equipment cannot be de-energized before beginning work, all engineers involved should be trained to work in an environment where an arc flash is possible. Appropriate safety clothing should be worn, as identified by the safety hazard analysis, and all rules of the OSHA and NFPA should followed.