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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 14402994 - Employee Dies In Fall When Mast Collapses

Accident: 14402994 -- Report ID: 0626000 -- Event Date: 10/16/1991
InspectionOpen DateSICEstablishment Name
10232942210/18/19911389Trans American Natural Gas Corp., Rig #75
On October 16, 1991, Trans American Natural Gas Corporation Rig #75 was drilling a gas well to a depth of 9,200 ft and was at the 6,480 ft level. A logging trip had just been completed and the crew had begun to trip pipe back into the wellbore. After all drill collars and approximately thirty 4 1/2 in. drill pipe were added to the drill string, the wellbore was circulated for approximately 30 minutes. Another twenty nine 4 1/2 in. drill pipe were added. The thirtieth 4 1/2 in. drill pipe was added and torqued up. The driller then raised the drill string and the floorhands removed the slips from the rotary table. The driller heard a loud bang and looked to see the upper section of the derrick mast and associated equipment falling. Employee #1, the derrickman, was working on the pipe racking board and had no time to get onto the geronimo escape device. He was caught in the fall and was injured. He died.
Keywords: derrick, derrickman, collapse, geronimo line, drill rig--non-oil, fall, gas well drilling
Employee # Inspection Age Sex Degree Nature Occupation
1 102329422 Fatality Other Occupation not reported

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