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Staged tests increase awareness of arc-flash hazards in electrical equipment

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10 Author(s)

The cause and prevention of electrical arcs have been explored since the early 1960s. Engineering design, construction of equipment enclosure, modifications with structural protection, and more recently, requirements for employee safe work practices have all targeted the risks of electrical arc hazards. Yet arcs accompanied by explosions continue to occur in electrical systems. Both human factors and equipment malfunctions contribute to the unexpected release of explosive electrical energy in the workplace. This paper presents experimental results of staged tests simulating the participation of workers in the test scene. Observations regarding the intensities of electrical arc flash events, variances between predicted and observed measurements, and implications for safety management are discussed. The intent is to improve understanding of how people are exposed to electrical hazards in industrial settings so that prevention strategies may be enhanced

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Industry Applications, IEEE Transactions on  (Volume:36 ,  Issue: 2 )