Alert 17-04 Drill Pipe Screen Lodging in Top Drive Results in Near Hit

Alert 17-04 Drill Pipe Screen Lodging in Top Drive Results in Near Hit

Alert 17-04 Drill Pipe Screen Lodging in Top Drive Results in Near Hit

WHAT HAPPENED:

There have been several incidents in which the drill pipe screen has become lodged in the Top Drive following a pressure release of the Mud Pump Pressure Relief System (Pop Off). In some cases the screen dislodged from the Top Drive while traveling overhead, resulting in a significant near hit.