• Published: 31 Mar 2014
  • Incident ID: 3533

Hydrocarbon release from atmospheric vent when blowing down annulus

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

Annulus blow down into hazardous sump.

Lessons Identified

This was considered to be a routine task and not controlled within the ISSOW system.

Incident Recommendations

  • All routine annulus blow down will be conducted under a breaking containment routine WCC.
  • Ensure WCC / procedure makes clear reference not to leave hoses charged and to isolate at closed drains manifold.
  • Statement on annulus blow-down to be captured on all TAR strategy documents
  • Table Top exercises to be used to verify understanding and knowledge of platform drains system.

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