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Charlestown turbine sinks 2 inches; Ground stabilization planned 

Credit:  By Kasey Hariman, Charlestown Patch, charlestown.patch.com 28 February 2012 ~~

The blades stopped turning in January, and now we’re learning why.

The Massachusetts Water Resource Authority shut down Charlestown’s wind turbine in January because it has settled two inches into the ground, a sink that was one inch more than expected, according to a Boston Herald article on the turbine.

In that article, MWRA Executive Director Fred Laskey emphasized that, “There’s no risk of it leaning over or falling,” and also said that this is ”one of those things that happens in a project. It’s manageable, it’s safe, and the remedy will come quickly under the warranty.”

The Massachusetts Water Resource Authority also told the Herald that possible causes of the sink include “soil conditions and vibrations from a sudden shutdown triggered by high winds,” but an article on South Coast Today was more direct.

“The Charlestown turbine was built on a landfill,” it says, and quotes Sumul Shah, president of Lumus Construction, the firm that installed the turbine in Charlestown, on the solution to this sinking problem.

“We’ll add a cementitious material into the ground and it will make it more stable.” Also referred to as a “grout injection into the ground,” Shah says this solution has worked in the past.

Laskey and the MWRA are motivated to get the turbine running; as Laskey says, “The urgency is to get the turbine working again. We were making electricity like gangbusters through the fall. It was magnificent.”

Source:  By Kasey Hariman, Charlestown Patch, charlestown.patch.com 28 February 2012

This article is the work of the source indicated. Any opinions expressed in it are not necessarily those of National Wind Watch.

The copyright of this article resides with the author or publisher indicated. As part of its noncommercial educational effort to present the environmental, social, scientific, and economic issues of large-scale wind power development to a global audience seeking such information, National Wind Watch endeavors to observe “fair use” as provided for in section 107 of U.S. Copyright Law and similar “fair dealing” provisions of the copyright laws of other nations. Send requests to excerpt, general inquiries, and comments via e-mail.

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