OSHA Accident Investigation · Summary #14347090
ELECTRICAL,E C,GROUND FAULT,BONDING,ELECTRIC GENERATOR,ELECTROCUTED,SYSTEM GROUNDING,ELEC EQUIPMENT--MISC
Event description
ELECTRIC SHOCK - GROUND FAULT IN ELECTRIC BRAKE
Investigation abstract
AN EMPLOYEE WAS SITTING ON A LADDER MOUNTED ON TOP OF A CRANE BOOM. THE CRANE WA G CONDUCTOR, WAS ELECTROCUTED. S MOUNTED ON THE BACK OF A FLAT BED TRUCK. THE EMPLOYEE WAS USING A PORTABLE ELE CTRIC DRILL THAT WAS CONNECTED TO A GENERATOR SITTING ON THE TRUCK. THE FRAME OF THE GENERATOR WAS NOT BONDED TO THE TRUCK, BECAUSE THE GENERATOR WAS STILL SITT ING IN THE BOTTOM OF ITS SHIPPING CRATE. (THE SHIPPING CRATE WAS HOWEVER ATTACHE D TO THE TRUCK BED.) A WIRE NUT INSIDE THE ELECTRIC BRAKE FOR THE CRANE HAD BROK EN, AND THE CONDUCTORS INSIDE WERE IN CONTACT WITH THE METAL COVER OF THE BRAKE. THIS ENERGIZED THE BOOM OF THE CRANE; AND THE EMPLOYEE, WHO WAS CONNECTED TO TH E GENERATOR FRAME (THE SYSTEM GROUND) BY MEANS OF THE DRILL'S EQUIPMENT GROUNDIN
Victims (2)
-
#1 Fatality Age 20 M
- Nature of injury
- 10
- Part of body
- 19
- Event type
- 13
- Source
- 15
- Occupation code
- 999
- Human factor
- 9
- Environmental factor
- 18
- Task assigned
- 1
-
#981 Degree 0 Age 0
- Nature of injury
- 0
- Part of body
- 0
- Event type
- 0
- Source
- 0
- Occupation code
- 0
- Human factor
- 0
- Environmental factor
- 0
- Task assigned
- 0
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.