• Published: 28 Oct 2013
  • Incident ID: 3473

HC leak from MOL pig launcher door due to seal failure

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

Pig Launcher

Lessons Identified

  • The quality of the door seal installation may not have been as per procedure
  • There was no requirement documented for further leak test requirements if there was a prolonged waiting period after the initial test

Incident Recommendations

  • Ensure specified trade discipline change the door seal as per procedure ‘Operation and Maintenance of Band Lock Seals’
  • Upgrade Pig Launcher door seal to ensure fit for service
  • Review Pig Launcher door design philosophy
  • Update procedure to clearly define leak test requirements (retest after prolonged period)

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