Digest
We Have Liftoff! — Process Safety Beacon, October 2007
We Have Liftoff! — Process Safety Beacon, October 2007
- CCPS
- Digest
- Process Safety Beacon October 2007
- Process Safety
- Pressure systemsProcess safety
- Pressure testing
- Process pipework and pipelinesStorage tanksValve
- Exclusion zonesEnergy and process isolationPressure reliefRisk assessment
Summary
A pneumatic pipe test pressurised a connected tank through a leaking block valve, causing bottom failure and lifting the tank onto the plant. The bulletin recommends positive isolation, adequate pressure relief, reviewing non-routine operations and keeping workers clear. Where possible, it favours hydrostatic testing because less energy can be released.
Classifications: Pressure systems; stored pressure; pressurised systems; pressurized systems.
Classifications: Process safety; major accident hazards.
Classifications: Pressure testing; hydrostatic testing; pneumatic testing.
Classifications: Process pipework and pipelines; process piping.
Classifications: Storage tanks; atmospheric tanks.
Classifications: Valve; valves.
Classifications: Exclusion zones; red zones; restricted access zones.
Classifications: Energy and process isolation; isolation; energy isolation.
Classifications: Pressure relief; overpressure protection.
Classifications: Risk assessment; hazard assessment.
Summary
A process safety bulletin issued in October 2007 addresses a hazard suggested by its liftoff theme.
Process Safety Beacon October 2007. Themes: process safety.