On July 8, Finland-based steelmaker Ruukki announced that it has delivered the first batch of steel structures for offshore wind tower foundations to the Norwegian company Kvaerner Verdal AS, from its Kalajoki plant. Deliveries from Kalajoki for the Nordsee Ost offshore wind farm project in the North Sea will continue until summer 2012. Ruukki's delivery includes a total of 240 of individual structures to anchor the towers and join the structures together.
Each jacket requires one transition piece to join the wind turbine tower to the jacket foundation, which is partly submerged under the sea. The transition pieces Ruukki delivers are 12 meters in diameter and about five meters in height. Piles are used to anchor jacket foundations to the sea bed and Ruukki provides the pile clusters.
Earlier this month Ruukki announced that it has agreed with the Norwegian company Aker Verdal AS on the delivery of steel structures for the Nordsee Ost wind farm project to be built offshore from Germany in the North Sea.