Fugro Seacore has announced that its work on installing a metmast for the Rampion Offshore Wind Farm has been successfully completed and the mast is now recording data for developer E.ON Climate and Renewables.
Information gathered by the metmast will be used to provide design data for the new wind farm, which will be located 13km offshore from Shoreham in the English Channel.
“Ours was a true ‘one-stop-shop’ solution for E.ON, as we designed, built and installed the mast with our owner-operated equipment and specialist crew, drawing on our previous experience and expertise of met mast design, build and installation work,” explained Fugro Seacore managing director Bob Jenkins.
The foundation comprises a 45.8m monopile which is 2.5m diameter and weighs 175t. A 10m tall topside piece incorporating the main working platform was bolted to the monopile offshore. The pile was transported in one piece, including floatation bungs, to the mobilisation berth in Newhaven where Fugro Seacore’s jack-up barge, Excalibur, lifted the pile into the water.
Work was undertaken at a water depth of 19m, with a further 6m tidal range. The ground conditions were stiff to very stiff sandy clay and dense sands, with an upper gravel layer. Once Excalibur, which had full storm survival ability, was on site, the pile was towed out and lifted into the pile gates ready for driving using IHC’s S800 hammer. Within three days of the pile lifting operation the external J-tube, access ladders, boat fenders, main platform and the 93m, tall lattice tower had been installed to complete the main structural works. Navigation aids were subsequently installed and commissioned, followed by the main telemetry system including anemometers, wind vanes and associated sensors.