OSHA Accident Investigation · Summary #998138
NORTHERN STATES POWER CO.
MINNEAPOLIS, MN·
Event description
BURNS AND FALL - GROUND FAULT ON ENERGIZED BUSBAR
Investigation abstract
AN EMPLOYEE WAS INSTALLING A PROTECTIVE GROUND ACROSS A BREAKER IN A 13.8-KILOVO LT CABINET IN A SUBSTATION. HE WAS USING A HOT STICK TO MANUEVER THE GROUNDING C LIP. THE CLIP CAME TOO CLOSE TO THE THREE BUS BARS, ONE OF WHICH WAS ENERGIZED. THIS CAUSED AN ELECTRIC ARC, WHICH GAVE THE EMPLOYEE FLASH BURNS AND KNOCKED HIM OFF THE LADDER.
Victim
-
#1 Non-hospitalized injury Age 32 M
- Nature of injury
- 5
- Part of body
- 9
- Event type
- 14
- Source
- 15
- Occupation code
- 577
- Human factor
- 1
- Environmental factor
- 18
- 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.