Abstract
The development of electrical safe operating procedures requires a detailed evaluation of the facility's electrical system and its relationship to any production process, manufacturing process, chemical process, and transportation facilities. One means of evaluating a facility is through a hazard analysis. The United States Department of Labor, Occupational Safety and Health Administration (OSHA), in Title 29, Part 1910, Section 119 (29 CFR 1910:119), provides guidance and requirements for establishing safe operating procedures. An electrical hazard analysis should identify potential problems, which may occur during normal facility operation. Anyone unaware of the hazards involved with an electrical arc flash event should first consider the following: Temperatures sustained in an arc-flash can reach 35,000 F (19,500 C); those extremely high temperatures will easily melt copper conductors; the potential for electrical shock is very high when anyone attempts to work on energized electrical equipment or systems without proper training, safety equipment, or locking out and tagging out that equipment; the electrical current levels associated with electrical shock are measured in milliamperes or one-thousandth of an ampere (0.001 Amps). Electrical accidents resulting from catastrophic equipment failure can be caused by manufacturing or design problems, improper application of equipment with regards to operating conditions, and the available power supply, voltage, and current harmonics, problems with supporting safety equipment; improper equipment installation, or failure to maintain the equipment per the manufacturer's recommendations.
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