OSHA Accident Investigation · Summary #14340442
ELECTRICAL,BOOM,CRANE BOOM,TRUCK CRANE,ELECTROCUTED,E C,ELECTRIC SHOCK,LOAD LINE,CRANE
Event description
ELECTRIC SHOCK - CRANE BOOM CONTACT WITH OVERHEAD LINES
Investigation abstract
AN EIGHT PERSON CREW WAS WORKING ON A NATURAL GAS PIPELINE UNDER CONSTRUCTION. T E WAS ELECTROCUTED AS HIS FOOT TOUCHED THE GROUND AT THE TOP OF THE TRENCH. THE CRANE OPERATOR ALSO RECEIVED AN ELECTRIC SHOCK BUT WAS NOT HOSPITALIZED. HE CREW WAS USING AN RD CORPORATION TRUCK-MOUNTED CRANE (MODEL TC50-1E, SERIAL N UMBER 903) TO LOWER A 4-INCH-DIAMETER STEEL PIPE INTO A 6-FOOT-DEEP TRENCH WITH A 1:1 SLOPE. THE PIPE WAS SUSPENDED BY A CUSTOM-MADE CALIPER CLAMP DESIGNED TO H OLD THIS SIZE PIPE. ONE OF THE EQUIPMENT OPERATORS ENTERED THE TRENCH TO UNFASTE N THE CLAMP. RATHER THAN USE AN 8-FOOT ALUMINUM EXTENSION LADDER THAT WAS AVAILA BLE, THE EMPLOYEE HELD ONTO THE CRANE CABLE AND RODE IT OUT OF THE TRENCH. AS TH E BOOM WAS MOVED, IT CONTACTED A 7200-VOLT (PHASE-TO-GROUND) OVERHEAD POWER LINE THAT WAS ABOUT 30 FEET ABOVE THE GROUND. THE EMPLOYEE RIDING THE CRANE LOAD LIN
Victims (2)
-
#1 Fatality Age 29 M
- Nature of injury
- 10
- Part of body
- 29
- Event type
- 12
- Source
- 34
- Occupation code
- 859
- Human factor
- 4
- Environmental factor
- 13
- Hazardous substance
- 8870
- Task assigned
- 1
-
#2 Non-hospitalized injury Age 29 M
- Nature of injury
- 10
- Part of body
- 29
- Event type
- 12
- Source
- 34
- Occupation code
- 849
- Human factor
- 4
- Environmental factor
- 13
- Hazardous substance
- 8870
- Task assigned
- 1
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