Failed Sensor on Wind Turbine Caused Shower of Ice Shards

Event Year: 2008 Reliability: Confirmed
Country: United Kingdom
Industry Type: Power and Utilities

A sensor that was supposed to turn off the wind turbine under icy conditions did not operate as expected.  Ice formed on the blades and showered nearby homes with large chunks of ice.


Ice formed on the turbine blades.  The sensor failed to stop the turbine and shards of ice (some 2 feet long) showered nearby homes.  Operators turned off the turbine.

Action Description: New equipment will be installed. It will detect ice formation on the blades and stope the turbine.