FEATURE SPONSOR


TURBINE INSTALLATION


THE WORLD’S FIRST FLOATING WINDFARM


Mammoet recently completed the assembly of the first five test turbines that will be used at Hywind Scotland Pilot Park, the world’s first floating windfarm situated at Buchan Deep, 25 kilometers off the east coast of Scotland


The turbines were assembled at the NorSea Group’s Stordbase yard at Stord, Norway. The company was contracted by NorSea Group AS for the lifting and transport operations conducted onshore at the yard.


EXPERTISE IN TURBINE ASSEMBLY Apart from the lifting and transport activities needed to assemble the five


turbines Mammoet was also hired for their specific turbine assembly expertise. Mammoet’s Project Manager Tom Braakman commented: “We were responsible for the engineering drawings and the transport drawings, and provided NorSea Group with advice on lifting strategies and planning, resulting in a smooth assembly.”


LIFTING MORE EFFICIENTLY Through this advisory role, the company was able to make a significant difference, Director Project Sales Europe Tom Rutgrink added: “Initial estimates showed that the client would need a 1350 ton crawler crane to lift the components. Based on our expertise we were able to come up with an approach that would only require a 1100 ton


crane, allowing us to do the job much more efficiently.”


ASSEMBLY


Each of the 6MW wind turbines had been shipped to Stord in nine separate components. At the yard, Mammoet assembled them using an LR 11000 crawler crane as main crane and 24 axle lines of SPMTs. When the assembly and outfitting was completed,


a Crane Vessel transported the 1150 ton assembled turbines to the floating foundation in the fjord. After the turbines have been installed on the foundations and finally prepared, they will be towed across the North Sea to their final destination.


HYWIND


The Hywind Scotland Pilot Park is a 30MW wind turbine farm located 25


www.windenergynetwork.co.uk 9


kilometres off the coast of Scotland. The park, which will generate enough to power to light up approximately 20,000 households, will stretch over approximately 4 square kilometres, at a water depth of 95-120 metres.


Mammoet


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