The U.S. Army Corps of Engineers has awarded Andritz Hydro Corp. an $8.3 million contract to replace equipment in the Snake River excitation system, encompassing exciters in three hydropower projects in Washington.
The Corps' Walla Walla District plans to replace 12 unit exciters: Units 4-6 at 810-MW Lower Granite, Units 4-6 at 810-MW Lower Monumental and Units 1-6 at 810-MW Little Goose.
The work includes new digital exciters, molded case circuit breakers, exciter cubicles, fuse cabinets, regulator cabinets, power potential transformers, digital controls, collector ring assemblies and associated cabling and wires. The work is to require three years, dependent upon spring runoff and fish passage windows that generally provide seven to nine months of on-site work access, July-March.
Recently, the U.S. Bureau of Reclamation awarded Andritz Hydro a contract for design and supply of a replacement turbine, with an option to supply three more, at the 2,078-MW Hoover Dam hydroelectric project on the Colorado River in Arizona and Nevada.
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