On January 12, a 110-meter-high wind turbine in Nysted Offshore Wind Farm south of Lolland succumbed to a minor windstorm and crashed into the water. It is obviously not optimal for a wind turbine to topple in windy weather, and that is why Ørsted, which owns the offshore wind farm, has since been searching for the cause of the collapse. It has now been found, writes TV2 Øst.
The cause of the collapse was a cracked and broken foundation. The foundation consists of two concrete elements that were cast together. The cracks allowed seawater to penetrate into small cracks between the two concrete elements, which allowed the turbine to wriggle free. To prevent a similar situation from recurring, all 71 remaining turbines in the offshore wind farm have been inspected. One is assessed to be at risk of toppling and has therefore been taken out of service. The rest are still assessed to be in good condition. According to Thomas Christiansen from Ørsted, there is no reason to fear that turbines in other offshore wind farms will collapse.
- Concrete boxes were the way foundations were built back then 20 years ago - but the entire industry has moved away from that way of doing it. The foundations here are the only ones of their kind in the world, says Tom Christiansen.
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