Alert 98 – 16 Stored Energy Hazards

Alert 98 – 16 Stored Energy Hazards

WHAT HAPPENED:

A rig worker was seriously injured when the cap at the end of a top drive accumulator blew off and struck him. He had been helping another employee remove the cap, unaware that the nitrogen pre-charge in the tube was still active. Because it had not been bled off, the pressure was sufficient to violently blow off the end cap.

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