Alert 10 – 02 Mud Pump Piston Change-Out Results in RWC
The rig crew was attempting to repair the mud pump and at the time of the incident, the crew began to remove the piston from the mud pump liner. In order to remove the piston, the Derrickman(injured person) was using a sledgehammer. While swinging the sledge hammer, the injured employee missed the piston and his left middle finger was caught between the mud pump liner and the sledge hammer handle. The injured employee sustained a fracture to the finger and lacerations to the top and bottom side of the finger.