Hydrocarbon release from atmospheric vent when blowing down annulus

Cause & Consequence

• Uncontrolled release of a flammable gas or liquid

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.