16 August 2023
Corrosion passivation ballast tanks of bridge pontoon
Date:
January 2023
Location project:
Ritthem, Shipyard Reimerswaal
Client:
Shipyard Reimerswaal
Application:
Bridge pontoon Shipyard Reimerswaal
Product(s):
nC Corrosion Passivator - Fluid
Preparation:
Remove mud and loose rust
Application method:
Spraying and floating
In 2022, we started the passivation of 400 m3 ballast tanks of the bridge pontoon of Shipyard Reimerswaal. To treat the tanks, we used nC Corrosion Passivator – Fluid. The Fluid is a product that can be applied by roller, brush, spray or by floating.
Corrosion passivation ballast tanks Bridge pontoon
Most of the bridge pontoon’s ballast tanks were treated by flaoting. Due to the use of wool grease, the Fluid floats on water, allowing even hard-to-reach areas to be treated thoroughly and quickly.
A key advantage of our nC Corrosion Passivator products, is that sandblasting and chipping are not necessary. The surface to be treated should only be free of mud, loose paint and rust.
Chemical bonding to the metal
By forming electron pairs, particles enter into a chemical bond with the metal behind the corrosion. As a result of the treatment, a color change takes place. The photo below clearly shows the color change of the treated steel surface in the ballast tanks.
Spot repair after welding
After floating, several welding operations took place on the outside of the pontoon. To combat corrosion in the ballast tanks, nC re-treated these areas using spot repair (spraying).
Long-term protection against corrosion influences
The bridge pontoon of Shipyard Reimerswaal again well and long-term protected against corrosion influences such as heat, moisture, salt and oxygen.
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