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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 61429.015 - Two Employees Are Struck By Metal From Exploding Sand Separa

Accident: 61429.015 -- Report ID: 0627510 -- Event Date: 04/30/2014
InspectionOpen DateSICEstablishment Name
975833.01504/30/2014Maverick Coating Services, Llc
At 12:00 a.m. on April 30, 2014, flow-back employees opened the 4H well head that was connected to a sand separator which was under pressure. The sand separator is connected to a sand box collector on one end and a manifold on the other end. Employee #1 was seen closing the valve between the sand separator and the sand box collector. The pathway from the sand separator and the manifold were closed, including all 5 valves. Employee #2 delivered some product and walked towards employee #1 to get a haul delivery ticket signed. Both employees were in the pressurized zone area of wellhead #4H when the explosion occurred. The pressure increased in the sand separator which was not equipped with a pressure relief valve. According to witnesses, employee #1 and employee #1 sustained severe head trauma from shrapnel released by the exploded metal pressure vessel and were killed.
Keywords: structural collapse, struck by, compressed gas, flowing material, kick back, pressure piping, rigging, pressure vessel, oil well drilling/servicing, air pressure, explosion, blowout--oil well
Employee # Inspection Age Sex Degree Nature Occupation
1 975833.015 40 M Fatality Fracture Truck Driver: Heavy/Tractor-Trailer
2 975833.015 46 M Fatality Fracture Drillers, oil well

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