OSHA Accident Investigation · Summary #14456602
OVERHEAD POWER LINE,ELECTRICAL,BOOM,CRANE BOOM,E C,ELECTRIC SHOCK,CRANE
Event description
ELECTRIC SHOCK - CONTACT WITH OVERHEAD LINE THRU CRANE BOOM
Investigation abstract
AN EQUIPMENT OPERATOR WAS USING A GALION CRANE (MODEL NO. 150A, SERIAL NO. 7746) G BUT STILL CONSCIOUS. THE CRANE STALLED, AND THE RIGHT FRONT TIRE BLEW OUT. THE OPERATOR STILL DID NOT REALIZE THAT THE CRANE WAS IN CONTACT WITH THE OVERHEAD LINE. THE OTHER EMPLOYEE ON THE GROUND SAW HIS INJURED COWORKER AND SAW ARCING U NDER THE CRANE. HE THEN RAN AND YELLED TO THE CRANE OPERATOR TO BACK UP THE CRAN E, EVEN THOUGH HE DID NOT KNOW THE CAUSE OF THE ARCING. IN FACT, AT THE TIME, TH E CRANE OPERATOR AND THE PROJECT SUPERINTENDENT ALSO DID NOT KNOW OF THE CONTACT WITH THE POWER LINE. THE CRANE WAS BACKED UP THREE FEET FROM THE POWER LINES, A ND IT REMAINED THERE UNTIL THE TIME OF THE INSPECTION. THE INJURED EMPLOYEE WAS HOSPITALIZED. TO MOVE A CONCRETE BRIDGE ALONG A VIADUCT. THE LOAD BEGAN TO SWAY, SO TWO EMPLO YEES ON THE GROUND GRABBED ONTO THE WIRE ROPE TO STABILIZE THE LOAD. ONE OF THE TWO EMPLOYEES WAS ON THE LEFT, AND ONE WAS ON THE RIGHT. AS THEY MOVED ALONG THE VIADUCT, THE EMPLOYEE ON THE LEFT LET GO OF THE WIRE ROPE TO TALK TO SOMEONE. T HE CRANE OPERATOR CONTINUED MOVING THE CRANE WITH HIS EYES ON THE LOAD. THE CRAN E CONTACTED A 12-KILOVOLT OVERHEAD POWER LINE. (THE OPERATOR LATER STATED THAT H E HAD NOT CONSIDERED THE POWER LINES WHEN MOVING THE CRANE.) THE EMPLOYEE WHO WA S STILL HOLDING THE WIRE ROPE RECEIVED AN ELECTRIC SHOCK AND FELL DOWN, TWITCHIN
Victim
-
#1 Hospitalized Age 28 M
- Nature of injury
- 10
- Part of body
- 19
- Event type
- 13
- Source
- 15
- Occupation code
- 869
- Human factor
- 1
- Environmental factor
- 6
- 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.