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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 201081353 - Burn - Electrical Fault In Circuit Breaker

Accident: 201081353 -- Report ID: 0950625 -- Event Date: 09/09/1998
InspectionOpen DateSICEstablishment Name
11997598502/02/19995063Mt Poso Cogeneration Plant
An operation-maintenance manager and a shift manager of a cogeneration plant were preparing to reconnect the system to the transmission grid after the system had been down for 6 months. The connection was performed automatically from the control room. During the connection process, indicators in the control room showed that a circuit breaker was not closing. The two employees went to the circuit breaker room to see if they could determine the cause of the problem. They racked out the 13.8-kilovolt vacuum circuit breaker to see if there were any apparent problems. They did not see any problems, so they began to rack the circuit breaker back in. An electrical fault occurred, and the ensuing electric arc burned the two employees. Employee #1 sustained third-degree burns on both forearms and his right hand. He was hospitalized for his injuries. Employee #2 sustained a minor burn on his left arm. Both employees had been wearing regular street clothing.
Keywords: burn, clothing, electric arc, electrical, electrician, electrical work, e ptd, circuit breaker, elec utility work, electrical fault
Employee # Inspection Age Sex Degree Nature Occupation
1 119975985 Non Hospitalized injury Burn/Scald(Heat) Managers and administrators, n.e.c
2 119975985 Hospitalized injury Burn/Scald(Heat) Managers and administrators, n.e.c

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