Arc Flash Hazard Program. Facilities Instructions, Standards, and Techniques Volume 5-14

摘要

An arc flash hazard (AFH) is defined as a dangerous condition associated with the possible release of energy caused by an electric arc. Employees working on energized electrical equipment, operating at 50 volts or more, have the potential for personal injury from arcing faults by conditions such as tools contacting electrical buses, insulation failures, loose connections, improper work procedures, impurities/dust buildup, corrosion, condensation, over-voltage conditions, or equipment malfunctions. Arcing faults produce hazards of extreme temperatures, light, sound, and pressure. This document provides procedures to establish and maintain an Arc Flash Hazard Program (AFH Program) to be utilized by the Bureau of Reclamation (Reclamation). The requirements of this document are applicable to all Reclamation facilities that contain energized electrical equipment. Within this document, this program is referred to as the AFH Program and is a major component of a complete electrical safety program.