OSHA Accident Investigation · Summary #14510861

OIL WELL DRILLING,DRAWWORKS,STRUCK BY,TONGS,OIL RIG

1984-11-07T00:00:00

Event: OIL WELL DRILLING,DRAWWORKS,STRUCK BY,TONGS,OIL RIG
Linked inspection: No inspection record linked to this accident's victims.
Summary number: 14510861
Report ID: 625400

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

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