Safety Alert
Improperly Depressurizing Piping to Remove a Hydrate Causes Injury
Improperly Depressurizing Piping to Remove a Hydrate Causes Injury
- BSEE
- Safety Alert
- BSEE Safety Alert 484
- Control of WorkPressure Systems
- Line of firePressure systems
- Inspection and maintenance
- Process pipework and pipelinesValve
- Energy and process isolationJob safety analysisManagement of change
- Upstream oil and gas
- Offshore installation
Summary
An offshore platform operator suffered bruising and swelling when a valve assembly detached during depressurisation of gas lift piping containing a possible hydrate. Approximately 900 psi was trapped behind the valve. The alert recommends considering energy isolation, balanced bleeding, task hazard analysis, management of change and gas dehydration.
Classifications: Line of fire; struck-by hazards.
Classifications: Pressure systems; stored pressure; pressurised systems; pressurized systems.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Process pipework and pipelines; process piping.
Classifications: Valve; valves.
Classifications: Energy and process isolation; isolation; energy isolation.
Classifications: Job safety analysis; JSA; job hazard analysis; JHA.
Classifications: Management of change; MOC; change management.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Offshore installation; offshore platform; offshore rig.
Summary
An alert concerning injury caused by improperly depressurizing piping while removing a hydrate.
BSEE Safety Alert 484. Themes: control of work, pressure systems.