Investigation Report
Oil Discharge During Subsea Pipeline Modification
06-30-2022 23:46 MP 268 Pollution
- BSEE
- Investigation Report
- Unknown
- Environmental protectionHuman factorsHydrocarbon release
- Diving operations
- Process pipework and pipelines
- Emergency responsePollution reportingSafety communication
- Upstream oil and gas
- Marine watersSubsea
Summary
BSEE investigates a subsea pipeline modification incident in Main Pass that discharged an estimated 90 barrels of oil over three days. Cutting released unexpected stored energy, damaging temporary bypass piping. The report examines hazard awareness, deficient communication with a contributing platform, shutdown response and spill containment.
Classifications: Environmental protection; environmental safety; pollution prevention.
Classifications: Human factors; human performance; ergonomics.
Classifications: Hydrocarbon release; hydrocarbon leak; oil and gas release.
Classifications: Diving operations; diving; commercial diving.
Classifications: Process pipework and pipelines; process piping.
Classifications: Emergency response; emergency preparedness.
Classifications: Pollution reporting.
Classifications: Safety communication; toolbox talk; toolbox talks.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Marine waters.
Classifications: Subsea; underwater worksite.