OSHA Accident Investigation · Summary #14255368
E GI III,ELECTRICAL,CORD SET,ELECTROCUTED,GROUND FAULT,CORD CONNECTOR,EQUIPMENT GROUNDING
Event description
ELECTRIC SHOCK - GROUND FAULT IN EXTENSION CORD SET
Investigation abstract
AN EMPLOYEE WAS TROUBLESHOOTING AN ELECTRICAL PROBLEM IN A 2-TON OVERHEAD CRANE. ONE OF THE CIRCUIT CONDUCTORS HAD BEEN CONNECTED TO THE GROUNDING TERMINAL, ENE RGIZING THE METAL COVER FOR THE CONNECTOR. (THE METAL COVER WAS ALSO CONNECTED T O THE EQUIPMENT GROUNDING TERMINAL.) HE WAS USING A MESA EXTENSION CORD SET (TYPE P-122, 4-CONDUCTOR, 600-VOLT, 30-A MPERE). THE ATTACHMENT PLUG AND CORD CONNECTOR ON THE CORD SET HAD BEEN OUTFITTE D WITH HUBBELL METAL COVERS. THE EMPLOYEE CONNECTED THE CORD SET TO THE CRANE'S POWER SUPPLY CABLE AND TO A RECEPTACLE ABOUT 50 FEET AWAY. HE THEN MADE CONTINUI TY AND VOLTAGE CHECKS AND FOUND VOLTAGE IMPRESSED ON THE HOIST CHAIN. THE EMPLOY EE DISCONNECTED THE CORD SET TO DEENERGIZE THE EQUIPMENT; AND, IN DOING SO, HE R ECEIVED AN ELECTRIC SHOCK. THE EMPLOYEE LATER DIED FROM THE SHOCK HE RECEIVED. I NVESTIGATION REVEALED THAT THE CORD CONNECTOR ON THE CORD SET HAD BEEN MISWIRED.
Victim
-
#1 Fatality Age 32 M
- Nature of injury
- 10
- Part of body
- 31
- Event type
- 13
- Source
- 15
- Occupation code
- 533
- Human factor
- 14
- Environmental factor
- 18
- Hazardous substance
- 8870
- Task assigned
- 1
Codes shown verbatim from OSHA's accident-investigation database. A human-readable decoder is coming in a future release once the accident_lookup2 dictionary is loaded.