• Published: 1 Nov 2011
  • Incident ID: 3393

Bent Hinge Pin Results in Near Miss

Cause & Consequence

  • Other
Incident Consequence

Incident Location

Drilling unit

Incident Activity

Drilling, workover

Lessons Identified


 The parts were stored in the warehouse together with similar pins;

 The pins were not clearly labeled;

 The incorrect pin, which was picked up, was for a different type tong model;

 Rig personnel failed to recognize that they had received an incorrect pin.

Incident Recommendations

CORRECTIVE ACTIONS: To address this incident, this company did the following:

 Reorganized tong pins into separate bins in the warehouse;

 Required that the tong pins going forward be clearly identified and labeled;

 Instructed the warehouse staff of the new tong pin locations;

 Instructed rig crews to verify replacement parts that do not look right and/or fit correctly;

 Required crew to check the torque specifications for tongs prior to use.

[NOTE: Manual drill pipe tongs are rated to maximum torque of 100,000 ft./lbs. When applying torque to drill collars, ALL PERSONNEL must stand clear of the area.]

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