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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 121644.015 - Three Employees Are Burned In Arc Flash Explosion

Accident: 121644.015 -- Report ID: 0950631 -- Event Date: 05/31/2019
InspectionOpen DateSICEstablishment Name
1405952.01505/31/2019Green Smile Energy And Electric Age And Dia Teck
At 10:01 a.m. on May 31, 2019, Employees #1, #2, and #3, employed by an electric al contractor, were dismantling and removing electrically powered yard dying equ ipment from a closing factory. To remove large gauge copper electrical wiring f rom an electrical panel, Employee #1, the supervisor, used a hand-held battery p owered grinder with a cutting wheel installed. The covers had been removed and the power had not been disconnected/secured. During the cutting, live electrica l wires containing different phases of power came into contact with each other a nd created a phased electrical arc flash and explosion. The employees were tran sported to the hospital for treatment of electrical burns. Employee #1, who rec eived the bulk of the arc flash, was hospitalized for treatment of severe burns to his upper body and arms. Employees #2 and #3 sustained minor to moderate bur n injuries. They were treated and released without hospitalization.
Keywords: arm, construction, contact, cutting, demolition, dismantling, electric arc flash, electrical burn, electrical panel, explosion, grinder, lockout/tagout, torso, unsecured panel
Employee # Inspection Age Sex Degree Nature Occupation
1 1405952.015 57 M Hospitalized injury Electrical and electronic engineers
2 1405952.015 61 M Non Hospitalized injury Laborers, except construction
3 1405952.015 99 M Non Hospitalized injury Laborers, except construction

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