Digest
Do your shutoff systems actually work? — Process Safety Beacon, March 2008
Do your shutoff systems actually work? — Process Safety Beacon, March 2008
- CCPS
- Digest
- Process Safety Beacon March 2008
- Inspection and MaintenanceIsolationProcess Safety
- Functional safetyLoss of containment
- Fluid transfer
- PumpsStorage tanksValve
- Functional testing
- Downstream and process industries
Summary
A chemical feed tank overflowed despite its high-level shutoff interlock because liquid downstream of the closed valve could still fill the tank. The bulletin explains the importance of valve location and switch height, and recommends testing complete safety systems rather than individual components.
Classifications: Functional safety; safety instrumented systems; SIS.
Classifications: Loss of containment; containment loss.
Classifications: Fluid transfer; fluid loading; fluid offloading.
Classifications: Pumps.
Classifications: Storage tanks; atmospheric tanks.
Classifications: Valve; valves.
Classifications: Functional testing; function test.
Classifications: Downstream and process industries; refining; petrochemicals.
Summary
Beacon on verifying that process shutoff systems will actually function when they are needed.
Process Safety Beacon March 2008. Themes: inspection and maintenance, isolation, process safety.