Jan De Nul Secures Contract in Denmark

In the framework of the Kriegers Flak Offshore Wind Farm project, Energinet.dk and 50Hertz Transmission GmbH awarded the Joint Venture Iemants – Jan De Nul Group the EPCI contract for 2 Gravity Based Foundations (GBF).

Iemants joins with Jan De Nul Group for the engineering, construction and installation of 2 Gravity Based Foundations (GBFs) for 2 offshore substations, serving both for the future Kriegers Flak offshore wind farm as well as an interconnector between the Danish and German power net.

Jan De Nul Group is in charge of the design, construction, transport and installation of the GBFs, whereas Iemants will take care of the detailed design, fabrication and transportation of the steel shafts and decks which will be placed on top of the GBFs. The steel structures will be (pre)fabricated at the Iemants’ facilities in Belgium.

The GBFs will be constructed on a pontoon based in the port of Zeebrugge (Belgium) and towed to the Baltic Sea.

In Denmark, Jan De Nul’s backhoe dredger Gian Lorenzo Bernini and the fallpipe vessel Adhémar de Saint-Venant will take care of the excavation of the foundation pit and installation of the gravel bed.

Once the pontoon with GBFs arrives in Denmark, it will be immersed to offload the structures upon which the foundations will be installed onto the gravel bed. Finally, the GBFs will be ballasted and protected through scour installation by means of the Adhémar de Saint-Venant. The Gravity Based Foundations shall be installed offshore by the end of 2017.

 

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