
A technical newsletter has been written and published by DNV GL to give an insight and to make recommendations on how to avoid safety risks due to severe corrosion of vessel’s steel structure by way of the box cooler. In the most severe cases that DNV GL has encountered, the bolted flange of the top plate of the cooling box was involved. This led to increased risk of collapse of the top plate.
Extent of damage
A box cooler eliminates the secondary cooling water circuit of sea water inside the engine room. The cooling effect is achieved by natural circulation of the surrounding sea water and is considered to be a cost-effective alternative.
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