Energy Safety Canada: Employee contacted by a joint of casing

The crew was in the process of running casing. The casing shoe was installed onto the first casing joint and lowered through the table. The slips were then set, and the elevators were latched onto the next joint that was in the catwalk trough. The Driller then hoisted the joint stopping part way to leave the casing joint pin end resting in the trough while several workers began installing the float collar onto the stump. At this point, the catwalk operator, believing the second joint had been fully picked up, began retracting the catwalk trough, inadvertently causing the pin end of the casing to release from the trough and swing towards the rig floor contacting a worker who was installing the float collar. The worker was struck on his hard hat/shoulder knocking him over. Fortunately, the worker sustained only a minor soft tissue injury.

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