Library filed under Structural Failure from Michigan

400-foot wind turbine falls in Huron County

A nearly 400-foot, 485,000-pound wind turbine has fallen down on a farm field at the site of the state’s first utility-scale wind project. Oliver Township Supervisor Larry Krohn said it came down at about 5:20 a.m. in the middle of the field. ...The fall marks the second incident in less than a week in which a wind turbine has failed.
25 Feb 2016

Another GE turbine blade breaks off, leading to further investigation

“Out of caution, all turbine commissioning and turbine operations at the wind farm have been suspended,” Invenergy says. “We are working with GE, the turbine manufacturer, to determine the cause of this incident. Following a GE blade break on Nov. 7, utility DTE Energy has also ceased work on its 112 MW Echo Wind Park in Michigan. Scott Simons, a DTE Energy spokesperson, recently told NAW that GE was performing a reliability test on a turbine when the blade fell.
19 Nov 2013

‘Here at DTE, we have a lot of questions as well’

The blade that broke was going through a testing period but hadn’t been fully commissioned, according to DTE. CO-84 was turning when it broke into the three pieces. Two parts of the blade fell right underneath the turbine, while a third piece traveled 80 feet and landed on the access road to the turbine. “As a result of the failure we have shut down Echo,” Chriss said at the meeting.
15 Nov 2013

GE blade crashes to the ground at DTE wind farm

DTE has halted construction of the remaining 10 turbines and shut down the entire wind park. “We have ceased all work and operation on the project until we’re satisfied with what the root cause is and that it doesn’t pose a danger of any continued blade failure. We’re working with GE to determine the root cause. It’s still under investigation.”
13 Nov 2013

Another turbine blade breaks in Huron County

It was the third turbine to break in Huron County in the last 10 months and the second turbine owned by DTE to break down in that time. In March, a turbine blade in Sigel Township broke ...In addition, a turbine was struck by lightning near Minden City at the Michigan Wind Project 2 in September. The turbine, owned by Exelon Energy also lost a blade and was set to be back online this week.
9 Nov 2013

DTE explains broken turbine blade

“The cause for the blade breaking was a carbon failure at the 19-meter mark that was not formed properly,” Buda said. “Failure in the heating oven at the plant caused the blade to break later on.” ...properly made wind turbines can handle wind speeds up to 125 mph.
4 Oct 2013

http://www.windaction.org/posts?location=Michigan&p=2&topic=Structural+Failure
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