OSHA Accident Investigation · Summary #14510861
R C CHAPMAN DRILLING CO RIG 203
LA GRANGE, TX—
Event description
STRUCK BY TONGS ON DRILLING FLOOR
Investigation abstract
THE OIL WELL DRILLING CREW WAS IN THE PROCESS OF MAKING A TRIP OUT OF HOLE. THE DRILL STRING WAS PULLED UP AND SET IN SLIPS. THE BREAK-OUT AND BACK UP TONGS WER E ATTACHED. THE DRILLER ACTUATED THE BREAK-OUT CATHEAD. WHEN THE TOOL JOINT BROK E LOOSE THE BREAK-OUT TONGS CAME LOOSE. THE BREAK-OUT CATHEAD LINE CAUGHT ON THE CATHEAD SHAFT COUPLING, CAUSING THE LINE TO CONTINUE PULLING. WHEN THE SLACK WA S TAKEN OUT OF THE TONG SNUB LINE THE TONGS SWUNG WITH GREAT FORCE, STRIKING THE VICTIM AND THROWING HIM AGAINST THE DRAWWORKS.
Victim
-
#1 Fatality Age 25 M
- Nature of injury
- 6
- Part of body
- 13
- Event type
- 1
- Source
- 27
- Occupation code
- 999
- Human factor
- 14
- Environmental factor
- 8
- 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.