黑洞社区

Ramboll is facing legal action over alleged engineering problems on the 拢1.6bn Greater Gabbard offshore wind farm off the coast of Suffolk - one of the world鈥檚 largest offshore wind farms.

The engineer is being pursued for 拢1.4m in damages in the High Court by the wind farm鈥檚 contractor Fluor, which built the 140 wind turbine project, completed in September 2012. The Greater Gabbard project was plagued by problems and delays, finishing 18 months later than its original planned completion date of March 2011.

In Fluor鈥檚 claim against Ramboll, seen by 黑洞社区, the US-based construction group reveals it has itself had to pay a 拢32m settlement to the wind farm鈥檚 developer, Greater Gabbard Offshore Winds Limited (GGOWL), in a separate dispute over issues with the foundations of turbines on the project.

Fluor is claiming compensation from Ramboll for the cost of replacing a meteorological mast at the farm, which Ramboll was employed to design the foundations of in 2009. Fluor alleges Ramboll鈥檚 engineering designs for the mast鈥檚 foundations were not done 鈥渃arefully and/or professionally鈥�

Fluor quotes communications from Ramboll, sent after the mast was installed in February 2012, where Ramboll admits there were 鈥渆rrors鈥� in its calculations and that the 鈥渇atigue life鈥� of the mast, as designed, was 鈥渓ess than one year鈥�, when it was supposed to last at least 25 years.

The claim said: 鈥淗ad Fluor known at the time that the analysis and calculations by Ramboll, and the conclusions contained in the February 2012 report were wrong, it would not have allowed the meteorological mast to be installed.鈥�

The court papers also disclose Fluor is pursuing compensation from Danish engineer Carl C -which designed the mast itself - claiming Carl C should bear some of the total 拢1.6m cost of replacing the mast.

Fluor reached its 拢32m settlement with GGOWL - a joint venture between energy firms SSE and RWE - in May 2013. GGOWL had found 52 of the turbines鈥� foundations were 鈥渄efective鈥�. Fluor claimed 拢300m from it to pay for fixing them, butGGOWL counter claimed. Fluor said its 拢32m settlement with GGOWL meant it was 鈥渞elieved of any further responsibility鈥� on the project.

GGOWL and Fluor declined to comment further. Ramboll was unavailable for comment.

A spokesperson for Radius Tech, Carl C鈥檚 UK agent, said the claim would be 鈥渞obustly defended鈥�.

• The government has given the green light to the Project One wind farm scheme off the coast of Yorkshire, which will incorporate between 150 and 332 wind turbines.