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Accident: 200555944 - Employee Is Killed, Others Injured In Natural Gas Explosion

Accident: 200555944 -- Report ID: 0625700 -- Event Date: 11/18/2009
InspectionOpen DateSICEstablishment Name
31302783112/03/20091389Innovative Wellsite Systems Inc
InspectionOpen DateSICEstablishment Name
31302775711/19/20091389Siler Operations Llc
InspectionOpen DateSICEstablishment Name
31302783112/03/20091389Innovative Wellsite Systems Inc
InspectionOpen DateSICEstablishment Name
31302775711/19/20091389Siler Operations Llc
On November 19, 2009, employees from Siler Operation LLC and Innovative Wellsite Systems were in the process of changing the packing on load pins used to secure the tubing hangar basket in the well head tubing spool. On the previous days, icing of the gas well occurred, preventing the hangar basket from sealing properly. Methanol was applied during the previous evening and on the day of the accident to melt the ice. The basket was then set in place, and they began changing the packing material. The employees had removed and replaced six sets of packing. As they removed the seventh locking pin, a violent release occurred, allowing natural gas, with a ground pressure of approximately 9,400 psi, to release. Employee #1 was killed, Employee #2 and Employee #3 were hospitalized, and Employee #4 received first aid.
Keywords: locking pins, natural gas, explosion
Employee # Inspection Age Sex Degree Nature Occupation
1 313027831 Hospitalized injury Hearing Loss Technicians, n.e.c.
2 313027757 Fatality Fracture Hoist and winch operators
3 313027831 Non Hospitalized injury Cut/Laceration Managers and administrators, n.e.c
4 313027757 Hospitalized injury Fracture Hoist and winch operators

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