Design of cathodic protection for harbours
A well designed cathodic protection system extends the lifetime and save maintenance cost for all harbour structures.
Corrosion on harbour structures is a threat to long term integrity and profitability, and may result in safety and environmental risks. Harbours, sheet piling, piers, jetty piles, etc. come under attack from continuous exposure to seawater with plenty of oxygen present. The corrosion rates for these structures may be particularly high as a result of a phenomenon known as accelerated low water corrosion (ALWC) or microbiological induced corrosion (MIC).
Corrosion may be a complex process. Preventing it is not.
Several methods exist for treatment and prevention, but particularly effective is installation of cathodic protection system. Both sacrificial anodes and impressed current systems are well suited for corrosion protection.
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