A newly-developed methodology to guard the metal foundations of offshore wind generators from corrosion has gained an innovation award.

The under-construction offshore windfarm Arkona within the German Baltic Sea acquired the German Renewables Innovation Product of the Year award from the Clusteragentur Erneuerbare Energien, based mostly in Hamburg.

Ramboll developed the anti-corrosion methodology for E.ON and Statoil to scale back the environmental impression and decrease the development prices of offshore wind farms.

During the 25-year working lifetime of an offshore wind farm, metal-dissolving corrosion is considerably decreased by the brand new methodology, and emissions to the ocean are decreased by a number of hundred tonnes. The methodology is named TSA (thermally sprayed aluminium) and absolutely replaces using sacrificial anodes utilized to the monopiles.

Andreas Willecke from Ramboll’s Wind & Towers division defined the fabrication course of: “In the coating course of, a robotic sprays molten aluminium onto the as much as 81 metre-long, 1200 tonnes-heavy monopile foundations utilizing two arc burners. The floor is then sealed with artificial resin.”

TSA has up to now been used primarily as corrosion safety for smaller metal parts beneath water or for bigger parts above water, corresponding to offshore substations. Arkona is the primary venture to put in all monopiles of an offshore wind farm utilizing this corrosion safety know-how.

According to E.ON, this set new requirements for the development and operation of offshore wind energy vegetation.

The Arkona venture is positioned 35 kilometres northeast of the island of Rügen and can have a capability of 385 MW as soon as it turns into operational in 2019. It will set up 60 six-megawatt generators based mostly on monopile foundations designed by Ramboll.

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