ST-80 Cylinder Failure Causes Lower Leg Fracture

The crew was in the process of pushing liner to bottom. After completing the first connection of heavy weight drill pipe, the Floor Hand was moving the ST-80 (iron roughneck) back to its parked position.

While maneuvering the ST-80, the extend/retract hydraulic duplex cylinder suddenly failed. This caused the unit to fall outward and downward, and the control panel struck the Floor Hand’s lower leg with significant force.

After receiving initial medical care and stabilization, the Floor Hand was transported to the nearest healthcare facility.

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