Investigation Report
Stored Pressure Released During Potable-Water Tank Dismantling
07-05-2011 15:30 G02323 EI/360 Required Evacuation - LTA (>3 days) - Other
- BSEE
- Investigation Report
- Unknown
- Line of firePressure systems
- Inspection and maintenance
- HosePressure vesselValve
- Energy and process isolationJob safety analysisOperating and work proceduresOperational supervision
- Upstream oil and gas
Summary
Investigation of severe facial injuries during dismantling of a potable-water pressure tank. Removing a nozzle released stored bladder pressure, ejecting components and launching the tank. Findings identify failure to depressurise the bladder, unavailable manufacturer instructions, a job safety analysis covering filter changes rather than tank removal, and inadequate supervision.
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: Hose; flexible hose.
Classifications: Pressure vessel; pressure vessels.
Classifications: Valve; valves.
Classifications: Energy and process isolation; isolation; energy isolation.
Classifications: Job safety analysis; JSA; job hazard analysis; JHA.
Classifications: Operating and work procedures.
Classifications: Operational supervision.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.