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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 14241863 - Burn - Electrical Fault In Meter

Accident: 14241863 -- Report ID: 0627700 -- Event Date: 04/22/1993
InspectionOpen DateSICEstablishment Name
10905843804/22/19934911Public Service Of Oklahoma
Three power line workers for an electric utility were performing preliminary work on a 34-kilovolt distribution circuit that was to be replaced by a 13.2-kilovolt circuit. The employees were testing the transformer secondaries with a rotation meter to determine the phase sequence of the transformers' loads. One of the crew members (employee #2) had just connected the meter, which was rated at 600 volts, to the 2300-volt output. His two coworkers were observing the operation. The underrated meter failed, initiating a phase-to-phase electrical fault. The ensuing electric arc burned the three employees and ignited their clothing (which resulted in further burn injuries). Employees #1 and #2 sustained second- and third-degree burns. The third employee sustained second-degree burns. The employee using the meter thought that the voltage was 480 volts. His coworkers did not inform him of the actual voltage and did not recognize the hazards involved with using the underrated meter.
Keywords: burn, clothing, electric arc, electrical, power line worker, test equipment, e ptd, elec utility work, electrical fault, untrained
Employee # Inspection Age Sex Degree Nature Occupation
1 109058438 Hospitalized injury Burn/Scald(Heat) Electrical power installers and repairers
2 109058438 Hospitalized injury Burn/Scald(Heat) Electrical power installers and repairers
3 109058438 Hospitalized injury Burn/Scald(Heat) Electrical power installers and repairers

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