Multiple Gas Detector Activation

Cause & Consequence

• Uncontrolled release of a flammable gas or liquid

Incident Location

Fixed Installation

Incident Activity

Production operations

Specific Incident Equipment

LP degasser overboard dump vent line

Lessons Identified

• LP degasser vessel had been taken out of service and in 2009 the inlet to the vessel was isolated but never fully valve or positively isolated.
• In 2009 the decision was made to permanently not use the LP degasser - the required decommissioning process was however not instigated.
• There is no recorded historical evidence of maintenance of the associated lute seal on the vent line.

Incident Recommendations

• Apply positive isolation scheme to the degasser
• Ensure lute seal on the liquid outlet is maintained
• Communicate to all sites to instigate cross check that operationally critical equipment being rendered redundant has been decommissioned according to current policy.