OSHA Accident Investigation · Summary #14539332
CARDINAL DRILLING
Melstone, MT·
Event description
FELL FROM TOP OF DRILLING DERRICK
Investigation abstract
ON OCTOBER 6, 1985, AT APPROXIMATELY 8 AM, EMPLOYEE #1 WAS ASSIGNED THE TASK OF REMOVING THE TV ANTENNA FROM THE DERRICK CROWN ON RIG # 10. THE DERRICK CROWN IS APPROXIMATELY 140 FEET ABOVE GROUND LEVEL. A SLIDING COUNTERWEIGHT TYPE CLIMBIN G DEVICE EXTENDED UP THE DERRICK LADDER APPROXIMATELY 85 FEET TO THE DERRICK BOA RD. ABOVE THIS LEVEL EMPLOYEE #1 HAD TO UNSNAP FROM THE SAFETY DEVICE AND CLIMB ABOUT 40 FEET ON UP TO THE CROWN. EMPLOYEE #1 REMOVED THE ANTENNA AND MAST, THEN FELL AT SOME POINT BETWEEN THE CROWN AND DERRICK BOARD. HE SUFFERED MASSIVE FRA CTURES OF THE BACK AND FRONT OF HIS HEAD, A BROKEN LEFT LEG AND PUNCTURES AND CO NTUSIONS TO THE SHOULDER AND CHEST AREA. HE WAS KILLED.
Victim
-
#1 Fatality Age 28 M
- Nature of injury
- 12
- Part of body
- 13
- Event type
- 5
- Source
- 25
- Occupation code
- 867
- Human factor
- 11
- Environmental factor
- 8
- Task assigned
- 2
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