The U.S. Army Corps of Engineershas awarded a US$47.2 million contract to Voith Hydro Inc. to refurbish turbine-generators at the 135-MW Center Hill Dam in Tennessee.
The Corps’ Nashville District most recently solicited bids for the work this past November.
Per the tender, Voith Hydro will rehabilitate turbine-generator Units 1, 2 and 3 in the Center Hill powerhouse, which began operation in 1950 and 1951.
Work is to include replacement of runners, wicket gates, and generator stator windings; refurbishment of servomotors and the unit braking system; restacking existing generator iron; and installing vibration monitoring and high-pressure thrust bearing oil lift systems. The refurbished turbines will be required to have aeration capability.
The Corps has said the Center Hill units are at the top of the district’s rehabilitation list.
The Corps awarded contracts in 2013 to Terracon Consultants Inc. for geotechnical engineering services and in 2011 to Bauer Foundation Corp. to build a concrete seepage barrier in the main embankment at Center Hill on the Caney Fork River. It also sought information last year on firms capable of constructing a roller-compacted-concrete berm to reinforce an earthen saddle dam at Center Hill.
HydroWorld.com reported in June that Voith Hydro had made a shipment of of three stators and three distributors to American Municipal Power’s 72-MW Smithland hydroelectric project in Kentucky.
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