Dong Energy has contracted SPT Offshore for the structural and geotechnical design of suction bucket foundations for potentially five transformer substations, namely Burbo Bank Extension, Race Bank and Walney Extension.
The 4 suction buckets will potentially form the foundation of 4-leg jackets supporting high-voltage transmission substations weighing approx. 2500 ton each. The water depths vary from 11 to 29m. Installation of the first substation jacket is planned for 2016.
Recently, Dong Energy has contracted SPT Offshore for the installation and engineering of the suction buckets for its demonstration tripod suction bucket jacket (SBJ) foundation as per of the Borkum Riffgrund 1 wind farm. The suction bucket jacket foundation will support a 3.6 MW Siemens wind turbine generator. The local water depth is 25m. Offshore installation of the SBJ foundation from the Pacific Orca is planned for August 2014.