VANDERVELDE PROTECTION

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Cathodic Protection storm surge barrier Eastern Schelde

In 1994 Vandervelde Protection completed the installation of one of the largest impressed current cathodic protection systems in the world.

Aluminum-bronze guiding (sliding) strips in 62 sliding gates, which are the most important barriers in the Delta project, were subject to severe corrosion. Investigations and tests, carried out in close cooperation with our company, proved that this active corrosion could be stopped by using a cathodic protection system.

Unfortunately, the cathodic protection system is subject to extreme environmental conditions such as strong tidal-floatation and must also be able to resist the enormous power of waves which beat against the surge barrier during storms. Skill and a great deal of experience were essential when realizing a proper design and a correct choice of proven materials.

The complete cathodic protection system consists of 248 metaloxide anodes, 248 reference electrodes and 124 automatically controlled rectifier units, providing a total current of approximately 6000 Ampere.

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