Safety Flash
Near miss: Steam and water released from filter
Near miss: Steam and water released from filter
- IMCA
- Safety Flash
- IMCA SF 11/23
- IsolationPressure Systems
- Loss of containmentMechanical failurePressure systems
- Inspection and maintenance
- Valve
- Energy and process isolationOperating and work procedures
Summary
A mechanic cleaning boiler circulation pump strainers encountered an unexpected steam and water release. The isolation valve had not fully closed; a supervisor subsequently closed it further. Revised procedures specified opening the filter bypass before inlet and outlet isolation, followed by upstream and downstream draining and purging to ensure zero energy.
Classifications: Loss of containment; containment loss.
Classifications: Mechanical failure; equipment failure.
Classifications: Pressure systems; stored pressure; pressurised systems; pressurized systems.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Valve; valves.
Classifications: Energy and process isolation; isolation; energy isolation.
Classifications: Operating and work procedures.
Summary
Steam and water were unexpectedly released from a filter when a mechanic was cleaning out strainers from a boiler circulation pump
IMCA SF 11/23. Themes: isolation, pressure systems.