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Siemens forced to repair corroding bearings on 3.6MW offshore turbines  

Credit:  James Quilter, Windpower Monthly, www.windpowermonthly.com 17 August 2010 ~~

Siemens is carrying out essential maintenance work on four offshore wind farms, including the recently opened Gunfleet Sands, after it was discovered the turbines’ bearings were corroding.

The four wind farms all use Siemens’ 3.6MW turbines. In addition to Dong Energy’s Gunfleet Sands, the affected developments are: Burbo Bank (Dong), Rhyl Flats (RWE) and Lynn and Inner Dowsing (Centrica). Gunfleet Sands was only brought online last month.

There are 181 turbines across all four wind farms.

A Siemens spokeswoman said that during routine maintenance it had discovered the”protection” had failed for the hub bearings.

Work to remedy the problem will take place over the coming weeks. In the meantime, Siemens said, all of the wind farms will continue to operate as normal.

Siemens was unable to confirm whether it would be seeking damages from the respective suppliers. The work will be funded by Siemens, despite the company needing to hire a 7000-ton vessel to carry it out.

The Siemens 3.6MW wind turbine has been described by some wind developers as the ‘workhorse’ of offshore. Recently it was picked as the turbine of choice for Cape Wind’s 420MW development in Nantucket Bay.

Source:  James Quilter, Windpower Monthly, www.windpowermonthly.com 17 August 2010

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 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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