Safety Flash
Near-miss: Equipment failure: Broken mast arms
Near-miss: Equipment failure: Broken mast arms
- IMCA
- Safety Flash
- IMCA SF 07/15
- Inspection and MaintenanceStructural and Asset IntegrityVessel and Mooring
- Material fatigueMechanical failureStructural and asset integrity
- Inspection and maintenance
- Preventive maintenance
- Marine industry
- Vessel
Summary
Two near misses involved CTV mast arms failing through weld fatigue associated with heavy aerials. Both vessels returned safely to harbour. The member recommends scheduled mast checks focusing on shroud tension and weld strength, with particular attention to unsupported sections carrying large or heavy aerials or equipment.
Classifications: Material fatigue; metal fatigue.
Classifications: Mechanical failure; equipment failure.
Classifications: Structural and asset integrity; asset integrity; structural integrity.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Preventive maintenance; preventative maintenance; planned maintenance.
Classifications: Marine industry; shipping industry; maritime sector.
Classifications: Vessel; aboard ship; onboard vessel.
Summary
A member has reported two near miss incidents in which there has been a failure of a mast arm on a CTV.
IMCA SF 07/15. Themes: inspection and maintenance, structural and asset integrity, vessel and mooring.