Alert 01 – 34 Dropped Pipe Spinner
WHAT HAPPENED:
A floorman was running the pipe spinner during a trip. As he finished backing out a joint of drill pipe, he pushed the pipe spinner back to its stand. At that point the top U-bolt on the piston backed out from the piston arm. The pipe spinner dropped approximately 4-ft to the rig floor and the force of the spinner dropping pushed the floorman to one side and he fell backwards on the rig floor sustaining a twisted ankle and bruised knee.