The challenge
In the humid marine climate, condensation inside steel silo No. 3 had caused hardened cement caking and corrosion under the deposits. Coatings had failed and the steel was pitting.
The caking also restricted flow and risked uneven loads on the thin steel shell.
Scope of works
- Full lockout/tagout, multi-gas monitoring, forced ventilation and rescue standby
- Dual-rope access from the roof manhole with edge protection
- Top-down mechanical descaling of hardened cement, protecting the steel plates
- Power-tool cleaning (SSPC-SP11) and a surface-tolerant protective coating
Outcome
The silo was cleared, flow restored and corrosion arrested, extending its life, while neighbouring silos kept running. See our silo cleaning services and the steel silo de-caking at the same plant.
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