OSHA Accident Investigation · Summary #14354112
BURN,CLOTHING,ELECTRICAL,E PTD,CIRCUIT BREAKER,ELEC UTILITY WORK,ELECTRICAL FAULT,SWITCHGEAR
Event description
ELECTRICAL BURNS - ELECTRICAL FAULT IN SWITCHGEAR
Investigation abstract
AN ELECTRICAL FAULT HAD OCCURRED IN A SWITCHGEAR CUBICLE. AN EMPLOYEE PUSHED A M ANUAL TRIP BUTTON, HAVING ASSUMED THE BREAKER WAS OPEN. AFTER MAKING THE NECESSA RY STEPS TO ENERGIZE THE EMERGENCY SWITCHGEAR, AN ELECTRICAL EXPLOSION OCCURRED BEHIND THE EMPLOYEE WHERE THE ORIGINAL FAULT HAD OCCURED. THE EMPLOYEE WAS SEVER LY BURNED. A SECOND EMPLOYEE RECEIVED MINOR BURNS. THE ACCIDENT WAS PROBABLY CAU SED BY THE DISCONNECT SWITCH ON THE LOAD SIDE OF THE REGULATOR BEING IN THE CLOS ED POSITION, ALLOWING THE BREAKER ON THE OPERATING SIDE TO BE ENERGIZED BY THE E MERGENCY SIDE. IT WAS ASSUMED THAT THE OPERATING SIDE HAD ALREADY FAILED.
Victims (2)
-
#1 Hospitalized Age 60 M
- Nature of injury
- 5
- Part of body
- 19
- Event type
- 1
- Source
- 15
- Occupation code
- 577
- Human factor
- 4
- Environmental factor
- 18
- Hazardous substance
- 8880
- Task assigned
- 1
-
#2 Non-hospitalized injury Age 59 M
- Nature of injury
- 5
- Part of body
- 12
- Event type
- 1
- Source
- 15
- Occupation code
- 999
- Human factor
- 4
- Environmental factor
- 18
- Hazardous substance
- 8880
- 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.