OSHA Accident Investigation · Summary #14257034
ELECTRICAL,ELECTROCUTED,SLIP,E PTD,ELEC UTILITY WORK,TRANSFORMER
Event description
ELECTRIC SHOCK - DIRECT CONTACT WITH ENERGIZED PARTS
Investigation abstract
AN EMPLOYEE WORKING ALONE WAS ATTACHING 120-VOLT CONDUCTORS TO AN ENERGIZED TRAN ED ONE OR BOTH OF THE ENERGIZED SPADE LUGS. A WITNESS REPORTED SEEING HIM STAND UP, STAGGER AWAY FROM THE TRANSFORMER, AND FALL TO THE GROUND; HOWEVER, NO ONE R EPORTED SEEING THE ACTUAL MOMENT OF CONTACT WITH ENERGIZED PARTS. A FOOT-PRINT-S IZED SECTION OF DISPLACED SOIL AT THE LIP OF THE TRENCH INDICATED THAT HIS LEFT FOOT MAY HAVE SLIPPED INTO THE TRENCH, CAUSING HIM TO FALL INTO THE TRANSFORMER. HE HAD ELECTRICAL BURNS ON HIS UPPER ABDOMEN AND RIGHT FOREARM. SFORMER MOUNTED ON A CONCRETE PAD AT A CONSTRUCTION SITE. HE WAS WORKING IN A SQ UATTING OR KNEELING POSITION ON MUDDY EARTH IN FRONT OF THE TRANSFORMER. THERE W AS A SHALLOW TRENCH 30 TO 36 INCHES DEEP AND 6 TO 8 INCHES WIDE FOR UNDERGROUND CONDUCTORS ON THE LEFT SIDE OF THE EMPLOYEE'S POSITION. HE WAS WEARING RUBBER GL OVES WITH LEATHER PROTECTORS. NO INSULATION WAS PROVIDED ON THE SPADE LUGS TO WH ICH THE CONDUCTORS WERE BEING ATTACHED. USING A HAND WRENCH TO TIGHTEN THE BOLTS INSIDE THE TRANSFORMER, HE HAD MADE THE TWO LINE CONNECTIONS AND APPARENTLY WAS BOLTING THE THREE NEUTRAL CONDUCTORS TO THE NEUTRAL SPADE WHEN HIS BODY CONTACT
Victim
-
#1 Fatality Age 22 M
- Nature of injury
- 10
- Part of body
- 31
- Event type
- 13
- Source
- 15
- Occupation code
- 577
- Human factor
- 20
- Environmental factor
- 15
- Hazardous substance
- 8870
- Task assigned
- 1
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