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Accident: 14495964 - Electric Shock - Corrosion-Caused Fault In Switch

Accident: 14495964 -- Report ID: 0627100 -- Event Date: 10/25/1984
InspectionOpen DateSICEstablishment Name
85031310/26/19845153Bruce Oakley Inc
A 4-FOOT-BY-8-FOOT ROOM IN A SALT GRINDING BAY HOUSED SWITCHES ALONG ONE WALL. A 5-FOOT SECTION OF METAL CABLE TRAY HAD BEEN MOUNTED THERE; AND, ON TOP OF THE CABLE TRAY, A MAIN SWITCH HAD BEEN INSTALLED WITH A SHORT METAL NIPPLE. THREE OTHER SWITCHES WERE ALSO INSTALLED ON TOP OF THE TRAY IN THE SAME MANNER. ALL OF THE SWITCHES WERE RATED 480 VOLTS, 3 PHASE. BECAUSE OF CORROSION PROBLEMS, THE SWITCHES WERE SUPPLIED BY CONDUCTORS RUN IN NONMETALLIC CONDUIT. HOWEVER, THE SWITCHES WERE OF THE GENERAL-PURPOSE TYPE, AND CORROSION HAD CAUSED LEAKAGE TO DEVELOP FROM THE CENTER PHASE TO THE SWITCH HANDLE. AN EMPLOYEE MOVED THE HANDLE OF THE MAIN SWITCH IN THE UP POSITION. BECAUSE THE METAL TRAY WAS NOT GROUNDED, THIS ENERGIZED THE METAL CABLE TRAY AND THE OTHER THREE SWITCHES. THE EMPLOYEE WAS ELECTROCUTED AS HE TOUCHED ONE OF THE SMALLER SWITCHES.
Keywords: electrical, electric switch, e gi vii, electrocuted, current leakage, corrosion, equipment grounding
Employee # Inspection Age Sex Degree Nature Occupation
1 850313 Fatality Electric Shock Occupation not reported

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