Tecnoambiente has successfully completed the offshore phase for RTE and the Direction Générale de l’Energie et du Climat (DGEC), part of the Ministère de la Transition Ecologique et de la Cohésion des Territoires. Tecnoambiente has performed geophysical and shallow geotechnical investigations at both AO4 (Normandy) and AO5 (Brittany) sites for offshore wind farm development – including wind turbines area, export cables routes and offshore substations sites.
Tecnoambiente has delivered a precise mapping of the seabed, 2D UHR seismic, UXO, environmental sampling and shallow geotechnics with the diesel-electric vessels GeoRanger and Nora B. Tecnoambiente will finalise and release the integration and interpretation reports based on the geotechnical laboratory results, enabling RTE and DGEC to deliver an exhaustive technical investigation of both locations for the bidders.
The project started in September 2021, with more than 6 months of offshore operations facing challenging metocean conditions at both sites, and successfully managing all the stakeholders.
Roger Mir, Tecnoambiente's Sales Manager said: “This project highlights the role that Tecnoambiente plays in the energy transition by providing high-quality datasets that are necessary for the designs of the floating and bottom fix turbines and substations in conjunction with the cable routing.”
Sophie Le Nel RTE’s Project Eng., said: “As RTE Offshore Lead Engineer on Centre Manche projects, I would like to congratulate Tecnoambiente for all the work accomplished. It has been such a pleasure to work with you since the beginning. You have proven your adaptability to work in a complex area, flexibility to last minute changes in the scope. The work has been performed very effectively and always with a good relationship. We are happy to demonstrate our confidence in you by starting another survey campaign next year, for the export cable route of second project AO8_Centre Manche 2.”
Tecnoambiente team is now preparing the mobilisation of the recently awarded AO6 & AO7 contracts. For this new project, Tecnoambiente will deliver an integrated solution of geotechnical and geophysical surveys on the French Atlantic and Mediterranean coasts, enabling the provision of 2D UHR seismic datasets and geotechnical data to the involved bidders.
The geophysical scope of works, starting mid-October, will be performed with a diesel-electric vessel with negligible noise, aiming for a better quality of the acquiring data. The geotechnical work package, starting next year, includes deep 200kN CPT pushes and undisturbed sampling by piston corer at wind farm sites.
AO8, Centre Manche 2, cable route survey in the English Channel is planned to be conducted next year.
