Investigation Report
Pipeline Ruptures During Preparations for Hot Work
11-12-2006 07:00 G04090 WC/294 Explosion - Incident >$25K
- BSEE
- Investigation Report
- Unknown
- Functional safetyHydrocarbon releasePressure systems
- Operator displays and control interfacesProcess pipework and pipelinesValve
- Alarm managementFunctional testingOperating and work proceduresStop-work authority
- Upstream oil and gas
- Offshore installation
Summary
Investigation of a pipeline rupture during preparations for hot work at WC-294. The report identifies an unverified well shut-in, overlooked SCADA warnings and a shared solenoid that defeated pressure shutdown functions. It discusses deficient shutdown procedures and testing, and recommends verifying satellite well closure before closing the host facility’s incoming valve.
Classifications: Functional safety; safety instrumented systems; SIS.
Classifications: Hydrocarbon release; hydrocarbon leak; oil and gas release.
Classifications: Pressure systems; stored pressure; pressurised systems; pressurized systems.
Classifications: Operator displays and control interfaces.
Classifications: Process pipework and pipelines; process piping.
Classifications: Valve; valves.
Classifications: Alarm management.
Classifications: Functional testing; function test.
Classifications: Operating and work procedures.
Classifications: Stop-work authority; stop work; stop-work intervention.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Offshore installation; offshore platform; offshore rig.