Man V. Machine

John R. Yannaccone, PE, Senior Mechanical Engineer ::::
Case Synopsis: On the morning of the incident, a machine operator reported that the clamps used to hold a workpiece were not gripping as tight as they normally do. The maintenance worker was alerted to this problem, and he and his helper went to repair equipment. The maintenance worker reported he adjusted the clamping mechanism and asked his helper to press the button to actuate the clamps. The helper moved to the control panel and depressed a button. At that time the two portions of the machine moved together, entrapping and crushing the lower portion of the maintenance worker’s body. The maintenance worker alleged the machine malfunctioned during the repair, resulting in him sustaining serious crush injuries to his lower body. It was further alleged that the equipment lacked the safety system to prevent motion of the machine during maintenance. Continue reading “Man V. Machine”