Safety Flash
Galvanic corrosion causes dropped object – satellite dome fell from mast
Galvanic corrosion causes dropped object – satellite dome fell from mast
- IMCA
- Safety Flash
- IMCA SF 04/18
- CorrosionDropped ObjectsInspection and MaintenanceStructural and Asset Integrity
- CorrosionDropped objectsStructural and asset integrity
- Inspection and maintenance
- Positive retention and reliable securingPreventive maintenance
- Marine industry
- Vessel
Summary
A vessel’s mast-mounted satellite antenna dome fell during heavy weather, without injuries. Investigation identified galvanic corrosion of mild steel bolts paired with stainless steel nuts, inadequate bolt sizing and difficult inspection access. The flash discusses planned maintenance revisions, compatible mounting materials and consideration of welded attachments where practical.
Classifications: Corrosion; corrosion damage.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Structural and asset integrity; asset integrity; structural integrity.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Positive retention and reliable securing.
Classifications: Preventive maintenance; preventative maintenance; planned maintenance.
Classifications: Marine industry; shipping industry; maritime sector.
Classifications: Vessel; aboard ship; onboard vessel.
Summary
A satellite antenna dome fell after galvanic corrosion weakened inadequately designed mast mountings.
IMCA SF 04/18. Themes: corrosion, dropped objects, inspection and maintenance, structural and asset integrity.