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Aluminium smelter in on-site hydro refurbishment

Andritz VA TECH HYDRO has been awarded a major refurbishment contract by Alcan Aluminium UK, a subsidiary of Rio Tinto Alcan for the supply, installation and commissioning of five new turbine generator units at the on-site Lochaber power station in Scotland.

The order, worth approximately €30 million, is part of Rio Tinto Alcan’s à‚£45 million (US$90 million) modernization of the plant, which exclusively supplies the smelter, set to begin in 2009 and be completed by 2012.

Lochaber power station, which was put into operation in 1929 has an installed capacity of 72 MW. Twelve 6 MW horizontal twin jet Pelton turbines, each driving two DC generators, will be replaced by five horizontal Francis turbines driving AC generators.

The scope of supply comprises the electro-mechanical equipment including turbine governors, main inlet valves, as well as unit automation and protection. The station will remain in operation during the modernization.

The mechanical scope will be shared with Andritz VA TECH HYDRO’s alliance partner Weir Services of Alloa, Scotland, which will supply the inlet valves, the mechanical balance of plant as well as site infrastructure and installation work.

The modernization will ensure the increased use of renewable energy for aluminum production at the plant, Andritz says.