Investigation Report
Equinor – Gullfaks C - investigation of oil spill
Equinor – Gullfaks C - investigation of oil spill
- Havtil
- Investigation Report
- Unknown
- Environmental protectionFunctional safetyHydrocarbon releaseProcess safetyRisk management
- Operator displays and control interfacesProcess pipework and pipelinesPumpsValve
- Environmental monitoring and quality assuranceOperating and work proceduresPermit to workRisk assessment
- Upstream oil and gas
- Marine watersOffshore installation
Summary
Investigation of an oil discharge during Tordis production startup at Gullfaks C. Premature opening of a separator water outlet, combined with emulsion problems, allowed oil through the produced-water treatment system to sea. The report examines valve leakage, unavailable oil-in-water monitoring, shutdown overrides, deficient startup procedures and absent systematic risk assessment.
Classifications: Environmental protection; environmental safety; pollution prevention.
Classifications: Functional safety; safety instrumented systems; SIS.
Classifications: Hydrocarbon release; hydrocarbon leak; oil and gas release.
Classifications: Process safety; major accident hazards.
Classifications: Risk management; risk evaluation.
Classifications: Operator displays and control interfaces.
Classifications: Process pipework and pipelines; process piping.
Classifications: Pumps.
Classifications: Valve; valves.
Classifications: Environmental monitoring and quality assurance.
Classifications: Operating and work procedures.
Classifications: Permit to work; PTW; work permit.
Classifications: Risk assessment; hazard assessment.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Marine waters.
Classifications: Offshore installation; offshore platform; offshore rig.