Officials: Mechanical failure, winds led to turbine collapse - WNEM TV 5

Officials: Mechanical failure, winds led to turbine collapse

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A wind turbine's owner and manufacturer say mechanical failures and high winds caused the toppling of a nearly 400-foot wind turbine in a Michigan field about 100 miles north of Detroit.

The Huron Daily Tribune reports Thursday that Exelon Wind Generation and Vestas, the manufacturer, have determined seals failed Feb. 25 in the system controlling how the turbine's blades move. The turbine was part of Exelon's 32-turbine Harvest Wind Farm in Oliver Township.

Exelon operations manager Chris Higgins says the turbine exceeded design rotation speeds and "basically shook itself apart."

The National Weather Service had reported wind gusts up to 45 mph in the area.

Exelon says the turbine was worth about $1.5 million. Company officials plan to provide continuous, remote monitoring of the turbines.

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