Investigation Report
Gas Leak Prompts Shutdown and Muster on Ursa Platform
01-13-2021 23:04 G05868 MC 809 Shutdown from gas release - required muster
- BSEE
- Investigation Report
- Unknown
- Functional safetyLoss of containmentMechanical failure
- Inspection and maintenance
- Gas detectorValve
- Emergency responseFunctional testingEnergy and process isolation
- Upstream oil and gas
- Offshore installation
Summary
BSEE investigated a gas leak at Shell’s Ursa platform caused by failed recycle-valve packing. Gas detection prompted compressor shutdown, blowdown, emergency shutdown and a platform muster. No injuries or equipment damage occurred. Replacement packing was tested without detected emissions; BSEE made no recommendations.
Classifications: Functional safety; safety instrumented systems; SIS.
Classifications: Loss of containment; containment loss.
Classifications: Mechanical failure; equipment failure.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Gas detector; gas monitor; gas detection instrument.
Classifications: Valve; valves.
Classifications: Emergency response; emergency preparedness.
Classifications: Functional testing; function test.
Classifications: Energy and process isolation; isolation; energy isolation.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Offshore installation; offshore platform; offshore rig.