• Published: 27 Sep 2012
  • Incident ID: 3449

Gas Release from gas lift choke valve packing

Cause & Consequence

  • Uncontrolled release of a flammable gas or liquid
Incident Consequence
Hydrocarbon release

Incident Location

Fixed Installation

Incident Activity

Production operations

Specific Incident Equipment

Gas lift choke valve

Lessons Identified

  • The maintenance history on the system for this valve was found to be lacking detail.
  • Packing follower was found to be insufficiently tensioned which in turn allowed the valve packing to pass.
  • The valve was poor condition externally due to corrosion. Valve internal components were however in very good condition.

Incident Recommendations

  • Valve to be refurbished in preparation for return to service
  • Develop a suitable maintenance routine for all gas lift and oil choke packing / gland followers, including work orders to implement.

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