Investigation Report
Major leak of liquefied propane from liquid gas carrier Ennerdale
Major leak of liquefied propane from liquid gas carrier Ennerdale
- MAIB
- Investigation Report
- Unknown
- Hazardous SubstancesHydrocarbon ReleaseProcess Safety
- Hydrocarbon releaseMechanical failurePressure systemsRegulation and legislation
- Inspection and maintenanceTank gauging and sampling
- Process pipework and pipelinesValve
- Emergency responseFunctional testingEnergy and process isolation
- Marine industry
- Port and quaysideVessel
Summary
Investigation synopsis of Ennerdale’s propane leak during cargo sampling at Fawley Marine Terminal. A sampling valve assembly detached and an emergency shutdown valve was jammed open by a burr. An estimated 66 tonnes escaped before sealing. The account examines sampling arrangements, valve testing shortcomings and emergency response, including hot tapping and sealant injection.
Classifications: Hydrocarbon release; hydrocarbon leak; oil and gas release.
Classifications: Mechanical failure; equipment failure.
Classifications: Pressure systems; stored pressure; pressurised systems; pressurized systems.
Classifications: Regulation and legislation; safety legislation; regulatory requirements.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Tank gauging and sampling.
Classifications: Process pipework and pipelines; process piping.
Classifications: Valve; valves.
Classifications: Emergency response; emergency preparedness.
Classifications: Functional testing; function test.
Classifications: Energy and process isolation; isolation; energy isolation.
Classifications: Marine industry; shipping industry; maritime sector.
Classifications: Port and quayside; quayside; harbour; harbor.
Classifications: Vessel; aboard ship; onboard vessel.
Themes: hazardous substances, hydrocarbon release, process safety.