OSHA Accident Investigation · Summary #14570303
ELECTRICAL,ELECTRIC CABLE,STEPLADDER,ELECTROCUTED,LADDER,E C,GROUND FAULT,EQUIPMENT GROUNDING,METAL LADDER
Event description
ELECTRIC SHOCK - GROUND FAULT IN METAL-CLAD CABLE
Investigation abstract
TWO EMPLOYEES WERE USING CHIPPING HAMMERS TO SMOOTH THE UPPER WALLS OF A LOCKER WHEN HE DID THIS. HIS COWORKER HAD BEEN ELECTROCUTED. INVESTIGATION FOUND THAT THE METAL SHEATH ON THE FAN'S CABLE HAD CUT THROUGH THE INSULATION ON THE UNGROU NDED CIRCUIT CONDUCTOR AND THAT THE EQUIPMENT GROUNDING CONDUCTOR WAS NOT CONNEC TED. THUS, WHEN THE FAN WAS ENERGIZED, THE CABLE'S METAL SHEATH WAS ENERGIZED AS WELL. AT THE TIME OF THE ACCIDENT, THE SHEATH WAS TOUCHING THE METAL LADDER, AL SO ENERGIZING IT AND RESULTING IN THE EMPLOYEE'S ELECTROCUTION. ROOM IN PREPARATION FOR PLACING CONCRETE SLABS FOR A NEW ROOF. ONE OF THE EMPLOY EES WAS ON A 6-FOOT WOOD STEPLADDER, AND THE OTHER WAS ON A 6-FOOT ALUMINUM STEP LADDER. A SQUIRREL-CAGE FAN WITH A METAL-CLAD CABLE WAS BEING USED TO PROVIDE VE NTILATION AND TO KEEP THE CONCRETE DUST OUT OF THE WORK AREA. THE EMPLOYEES COMP LETED THE WORK AT ABOUT 10:00 AM. THE EMPLOYEE WHO HAD BEEN WORKING FROM THE WOO D STEPLADDER WENT TO TURN OFF A COMPRESSOR THAT WAS 30 FEET AWAY. HE HEARD A YEL L. HE TWICE ASKED HIS COWORKER IF HE WAS ALRIGHT AND RECEIVED NO RESPONSE. HE RA N OVER TO HIS COWORKER AND PULLED HIM FROM THE LADDER. HE FELT AN ELECTRIC SHOCK
Victim
-
#1 Fatality Age 9 M
- Nature of injury
- 10
- Part of body
- 19
- Event type
- 13
- Source
- 15
- Occupation code
- 999
- Human factor
- 6
- Environmental factor
- 13
- 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.