The jacket substructure for the Hollandse Kust (west Alpha) transformer platform has been put in place off the coast of Egmond.
The DEME installation vessel Orion carried out the installation.
The 2,300-ton, 49-meter-high jacket foundation is supported at its four corners by piles that have been driven more than 50 meters into the seabed. Large 10-meter pipes attached to the undercarriage’s feet served as the piles’ guides. Cement is used to fill the area between the piles and the pipes.
On behalf of Smulders and Equans, Heerema Fabrication Group constructed the jacket. It traveled 50 kilometers off the coast of Egmond aan Zee on a floating pontoon on August 14th from the port of Vlissingen. The Orion installed the jacket after it arrived.
According to grid operator TenneT, the superstructure (topside) containing the transformers will be put in place the following year. In Hoboken, Belgium, Smulders and ENGIE is constructing the topside. The 700 MW offshore facility ought to be operational by 2024.
Image source: TenneT