RWE Innogy has commissioned Dutch company Fabricom Offshore Services to maintain the foundations of the 295MW Nordsee Ost offshore wind farm off the German island of Helgoland over the coming four years.
The contract includes the
inspection and maintenance of the 49 jacket foundations of the wind turbines
and the transformer substation, together with the monopile foundations of the
“The cost of maintaining foundations and wind turbines at
sea is high because the stresses caused by waves and salt water are
significantly higher at sea than on land,” says Marcel Sunier, project director
for the Nordsee Ost wind farm at RWE Innogy.
“A good downstream logistics network and, in particular,
expert service engineers are therefore a key requirement for ensuring reliable
and cost-effective operations at sea.”
Each of the 48 jacket wind turbine foundations is
approximately 50-metres in height and weighs some 55 tonnes. Installation of
the turbine foundations was completed in mid-March.
RWE Innogy plans to start with turbine installation in May,
followed in the summer by the transformer substation at sea.