On Friday, March 14, 2014, it was confirmed that FoundOcean had completed grouting operations on the 48th turbine, of RWE Innogy’s 295 MW capacity Nordsee Ost Offshore Wind Farm. The wind farm is located 35 kilometres northeast of the island of Helgoland in the German North Sea and sits in water depths of up to 25 meters.
The foundations are four-legged jacket structures, akin to those used in the oil and gas industry, yet engineered to suit the design specifications of an offshore wind turbine. FoundOcean mixed and pumped a total of 2,400 tonnes of cement into the foundations to secure all 48 jackets, and one substation, to the seabed.
FoundOcean says it continues to find ways to solve problems and shorten offshore grouting times. The company supplied a specially designed grouting system which allowed making grout connections subsea as opposed to the standard above-water method. Also, using a larger diameter grout hose allowed for more efficient material delivery rates. These changes allowed significantly shortening conventional grouting times.
Filed Under: News, Offshore wind, Projects