129 – Top Drive

6 May 1998

Alert 98 – 26 More on Casing Safety

Alert 98 – 26 More on Casing Safety WHAT HAPPENED: After running all 9-5/8″ casing, the 10-3/4″ 500-ton elevator was rigged up with the operating lever facing the
6 May 1998

Alert 98 – 25 Full Body Harness Safety

Alert 98 – 25 Full Body Harness Safety WHAT HAPPENED: A rig crew was tripping drill pipe into the hole. The elevators were coming up through the
6 May 1998

Alert 98 – 16 Stored Energy Hazards

Alert 98 – 16 Stored Energy Hazards WHAT HAPPENED: A rig worker was seriously injured when the cap at the end of a top drive accumulator blew
6 May 1998

Alert 98 – 14 Bolt Breakage

Alert 98 – 14 Bolt Breakage WHAT HAPPENED: While pulling out of the hole, both brake band anchor bolts failed. The elevators were about six feet (two meters)
6 May 1998

Alert 98 – 08 Running Casing Safely

Alert 98 – 08 Running Casing Safely WHAT HAPPENED: While running 5 1/2” casing, the driller observed the derrickman placing his hands and fingers on top of
6 May 1998

Alert 98 – 05 Exposure to Noise

Alert 98 – 05 Exposure to Noise WHAT HAPPENED: Here are some examples of exposures to noise measured by an operator
6 May 1998

Alert 98 – 23 High Pressure Hose Safety

Alert 98 – 23 High Pressure Hose Safety WHAT HAPPENED: A high-pressure top-drive rotary hose ruptured under a pressure of 3000 psi. The hose fell to the
6 May 1998

Alert 98 – 12 Cutting Drilling Line

Alert 98 – 12 Cutting Drilling Line WHAT HAPPENED: A rig worker was in the process of cutting drilling line. The 500-ton blocks had been hung on