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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 116378.015 - Employee'S Hand Is Burned In Arc Flash

Accident: 116378.015 -- Report ID: 0950644 -- Event Date: 01/14/2019
InspectionOpen DateSICEstablishment Name
1374490.01501/29/2019Evolution Mechanical
At 11:20 a.m. on January 14, 2019, Employee #1, employed by an HVAC company, was troubleshooting an HVAC unit on the roof of a large retail store. Light to hea vy rain was forecast. The employee went up to the roof with an umbrella and a v olt meter to check the power. The meter showed no power. He also checked for c ontinuity between all lines and found there was no power. He then checked the u nit's disconnect switch and turned it to the OFF position. Employee#1 went back downstairs to reset the breaker, and then returned to the rooftop unit. When h e turned the disconnect switch back to the ON position, an arc flash occurred. Employee#1's left hand was burned. The employee was transported to the hospital , where he received treatment for second degree burns to his hand. He was relea sed without hospitalization.
Keywords: burn, circuit breaker, construction, disconnecting means, electric arc, electric shock, electric switch, electrical testing, electrical work, hvac, hand, maintenance, rain, repair, roof
Employee # Inspection Age Sex Degree Nature Occupation
1 1374490.015 29 M Non Hospitalized injury Electronic repairers, communica. & indus. equip.

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