Safety Flash
Transponder pressure relief system failure
Transponder pressure relief system failure
- IMCA
- Safety Flash
- IMCA SF 03/05
- Machinery and EquipmentPressure Systems
- Line of fireMechanical failurePressure systems
- Inspection and maintenancePressure testing
- Valve
- Exclusion zonesOperating and work proceduresPressure relief
- Marine industry
Summary
Testing identified pressure-relief faults in two of three Kongsberg transponders. The attached manufacturer bulletin explains incorrect RPT valve assembly and provides dismantling, verification and repair procedures, including removal of an additional circlip. It addresses stored-pressure precautions and requires renewed pressure testing if the valve is moved.
Classifications: Line of fire; struck-by hazards.
Classifications: Mechanical failure; equipment failure.
Classifications: Pressure systems; stored pressure; pressurised systems; pressurized systems.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Pressure testing; hydrostatic testing; pneumatic testing.
Classifications: Valve; valves.
Classifications: Exclusion zones; red zones; restricted access zones.
Classifications: Operating and work procedures.
Classifications: Pressure relief; overpressure protection.
Classifications: Marine industry; shipping industry; maritime sector.
Summary
Whilst reviewing its test and repair procedures for transponders, a member has reported that a serious flaw was discovered in the pressure relief mechanism in two out of three Kongsberg transponders tested.
IMCA SF 03/05. Themes: machinery and equipment, pressure systems.