OSHA Accident Investigation · Summary #14494637
FOOTINGS,SLIP,FALL,OIL WELL SERVICING,UNSTABLE SOIL,OIL RIG,OVERTURN,UNSTABLE POSITION
Event description
EMPLOYEE KILLED WHEN OIL WORKOVER RIG FELL OVER
Investigation abstract
AN AK REMCO WORKOVER RIG WAS MOVED ON NOVEMBER 26, 1984, SO THAT AN ABANDONED OI THE PORTABLE MAST AND RIG TO TOPPLE TO THE GROUND. EMPLOYEE #1, THE CASING STAB BER, WAS WORKING IN THE MAST AND WAS KILLED WHEN THE RIG FELL TO THE GROUND. L WELL COULD BE REOPENED. A LARGE HOLE HAD BEEN DUG AT THE OLD OIL WELL TO ACCOM MODATE THE WELLHEAD OF THE WORKOVER RIG. A PORTION OF THIS HOLE HAD TO BE FILLED IN WITH DIRT SO THAT THE RIG COULD BE POSITIONED. THE RIG'S REAR FOOTING WAS PL ACED PARTIALLY UPON THIS FILLED-IN AREA. THE FOUNDATION OF THE RIG WAS SUBJECT T O EXTREME MOISTURE. IN TIME, DUE TO THE MOIST AND SATURATED SOIL, THE REAR FOOTI NG BEGAN TO TILT BACKWARDS. EVENTUALLY, THE REAR LOAD-BEARING PADS SLIPPED OFF O F THE SUPPLEMENTAL FOOTING. THE DRILLING PIPE WHICH WAS RACKED IN THE MAST WAS D ISPLACED FROM ITS VERTICAL POSITION. THE FORCE EXERTED BY THIS DRILL PIPE CAUSED
Victims (2)
-
#1 Fatality Age 36 M
- Nature of injury
- 6
- Part of body
- 4
- Event type
- 2
- Source
- 8
- Occupation code
- 999
- Human factor
- 11
- Environmental factor
- 4
- Task assigned
- 1
-
#982 Degree 0 Age 0
- Nature of injury
- 0
- Part of body
- 0
- Event type
- 0
- Source
- 0
- Occupation code
- 0
- Human factor
- 0
- Environmental factor
- 0
- Task assigned
- 0
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