• Published: 16 Jun 2011
  • Incident ID: 3190

Inadvertent activation of control lever

Cause & Consequence

  • Slip, trip or fall on same level
Incident Consequence

Incident Location

Drilling unit

Incident Activity

Drilling, workover

Incident Info Source

Step change in safety

Specific Incident Equipment

Rotary equipment and associated controls. Working with hand tools on or around the rotary table. Driller's cabin layout.

Lessons Identified

See description and Recommendations.

Incident Recommendations

Reposition the controls and install separation devices to prevent the person operating the controls to accidentlly activate them.Add a 'plexiglass' cover to the rotary control knob until such time the control can be relocated.Isolate the rotary table when using chain tongs and the like to manually make up or break out tubular connections.Change RT/Stop and TD mode selector switch to RT/TD selector switch.Drill crew must undergo simulator training for digital drilling controller.Create a JSA to include locking out rotary table when using chain tongs for making or breaking connections

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