A wireline crew was preparing to lift a wireline BOP control valve onto the well head. The control valve had been secured to a frame structure on the ground by means of two ratchet straps to prevent it from falling over. A new worker was assigned the task of hooking the valve to the crane hook by means of a lifting sling. The worker was seriously injured, when the wireline control valve fell over and knocked him to the ground.
A wireline crew was preparing to lift a wireline BOP control valve onto the well head. The control valve had been secured to a frame structure on the ground by means of two ratchet straps to prevent it from falling over. A new worker was assigned the task of hooking the valve to the crane hook by means of a lifting sling. The worker was seriously injured, when the wireline control valve fell over and knocked him to the ground.