LOC Renewables to provide marine warranty survey services for the Modular Offshore Grid project

The Paris office of LOC Renewables, a part of LOC Group, an international marine and engineering consultancy, has been contracted by the Belgian transmission system operator, Elia, to provide Marine Warranty Survey (MWS) services for the pioneering Modular Offshore Grid (MOG) project, located 40km off the Belgian coast in the North Sea. The agreement will see LOC provide support during the construction and installation of the Offshore Switchyard (OSY) platform and the submarine cables that will serve it.

offshore wind

The ambitious project will connect four wind farms, facilitate the transmission of energy directly to the Belgian national grid, and provide a foundation for the potential future development of an extensive North Sea grid, connecting the energy systems of neighboring countries.

The contract win follows a previous agreement between LOC Renewables, Elia, and the National Grid UK, as part of which the engineer is providing MWS services for the installation of the Nemo link, the HVDC submarine transmission cable linking Belgium and the UK.

The new MOG project, with its central OSY platform, will connect four planned wind farms: Rentel, Northwester 2, Mermaid and SeaStar, enabling them to supply electricity directly to the Belgian national electricity grid. It is anticipated that the project could also provide an initial foundation for the future development of an extensive North Sea grid, with the potential to interconnect the electricity supplies of neighboring countries.

Construction of the OSY offshore platform, a grounded, 4-leg substructure housing a 220kV Gas Insulated Switchgear, started in 2018. Initial work on installing the submarine cable connections will commence in 2019, including a 220kV AC cable linking the OSY and the Rentel wind farm, and two more identical cables linking the OSY to the Stevin substation on Zeebrugge beach.

LOC Renewables’ Paris office began carrying out MWS services in January 2018 and will continue in 2020. The work will be completed in three phases: first, an engineering and procedural review; followed by an assessment of vessel suitability; and, finally, site approval of the critical marine operation for loadout, transportation, and installation of the OSY platform and submarine cables. The newly built DP3 cable installation vessel ‘Living Stone’ will be leading the cable laying campaign, while the offshore lifting of the OSY platform is to be completed by ‘Oleg Strashnov’, a DP3 vessel with a 5,000-tonne crane capacity.

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