Safety Flash
Corrosion damage: Failed fire hydrant
Corrosion damage: Failed fire hydrant
- IMCA
- Safety Flash
- IMCA SF 35/16
- CorrosionInspection and MaintenancePressure SystemsStructural and Asset Integrity
- CorrosionDropped objectsMechanical failurePressure systemsStructural and asset integrity
- Inspection and maintenance
- Valve
- Fire protection
- Marine industry
- Vessel
Summary
A vessel’s hydrant valve assembly failed under pressure during helideck firefighting-system testing, struck the deck head and fell without injuring anyone. Analysis attributed stud failure to chloride-induced stress corrosion cracking and unsuitable material specification. Incorrect system operation contributed water hammer; actions included replacing affected studs and considering tropical-environment susceptibility.
Classifications: Corrosion; corrosion damage.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Mechanical failure; equipment failure.
Classifications: Pressure systems; stored pressure; pressurised systems; pressurized systems.
Classifications: Structural and asset integrity; asset integrity; structural integrity.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Valve; valves.
Classifications: Fire protection; fire suppression; fire detection.
Classifications: Marine industry; shipping industry; maritime sector.
Classifications: Vessel; aboard ship; onboard vessel.
Summary
A corroded hydrant assembly failed under pressure during firefighting-system testing, creating a dropped-object hazard.
IMCA SF 35/16. Themes: corrosion, inspection and maintenance, pressure systems, structural and asset integrity.