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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 514893 - Employee Drowns In Oxygen Deficient Tank, Two Hospitalized

Accident: 514893 -- Report ID: 0625700 -- Event Date: 05/06/1990
InspectionOpen DateSICEstablishment Name
11042185605/07/19901381Mallord Workover & Drilling, Inc.
On the morning of May 6, 1990, Employees #1, #2, and #3 were working at the Mallard Workover and Drilling, Inc., yard in the port of Iberia near New Iberia, LA. They had been instructed to check for conditions inside a rectangular tank on the lower portion of rig barge #24. The employees entered the tank, which measured approximately 10 ft by 5 ft, through a circular manhole opening. Mud lines passed through the tank, which was used to hold additional water for drilling operations. Without taking any gas or air quality readings, Employee #1 climbed down a ladder into the tank where he was overcome due to insufficient oxygen. He fell face down into accumulated water and died. Employees #2 and #3 also entered the tank and passed out. They were hospitalized and stayed at least one night in the Intensive Care Unit. There was insufficient oxygen in the tank and the employees were not wearing respirators.
Keywords: oxygen deficiency, unconsciousness, asphyxiated, confined space, work rules, drown, gas well drilling, respirator
Employee # Inspection Age Sex Degree Nature Occupation
1 110421856 Hospitalized injury Asphyxia Occupation not reported
2 110421856 Fatality Asphyxia Occupation not reported
3 110421856 Hospitalized injury Asphyxia Occupation not reported

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