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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 202531414 - Burn - Electrical Fault In Battery Rack

Accident: 202531414 -- Report ID: 0950635 -- Event Date: 07/16/2012
InspectionOpen DateSICEstablishment Name
31364610107/31/20124911Los Angeles Dept Of Water & Power

A crew was working upgrading the battery room at a receiving substation. (The room provided emergency power for up to 8 hours.) The electric utility had purchased replacement batteries from RSC in Wilmington, CA. Before starting work that day, the crew connected the newly purchased batteries in series. Two workers had requested insulated tools as well as appropriate personal protective equipment, such as gloves, barriers, and an insulated torque wrench. None could be provided on that day, but the employer allowed the work to continue. At about 1:00 p.m., after one worker had connected all the batteries in one rack in series, he made a cross-aisle connection to a second rack. As he was connecting the cross-aisle cable to the last battery on the upper level of the first rack, the other end of the cable dropped. It came too close to the exposed positive terminal of the last battery on the lower level of the same rack, causing an electrical fault. The ensuing electric arc burned the worker's rubber insulating gloves and melted his left glove into the middle and ring fingers of his left hand. He sustained second- and third-degree burns, requiring surgeries and hospitalization for several days. The employer had not trained its employees in the proper procedures for, and hazards of, working with wet cell batteries.

Keywords: battery, burn, elec protect equip, electric arc, electrical, ppe, work rules, e ptd, elec utility work, electrical fault

Employee Details
Employee # Inspection Age Sex Degree Nature Occupation
1 313646101 Hospitalized injury Burn/Scald(Heat) Occupation not reported

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