Mavel said January 5 it is to provide a double regulated Kaplan bulb turbine, steel intake, draft tube, and lubricating and cooling system. The Mavel KA1800K4 turbine has a runner diameter of 1,800 millimeters and four runner blades.
Finnholm, which is owned by Oy Herrfors Ab, has a net head of 5.35 meters and a flow of 18.5 cubic meters per second. Mavel expects to commission the unit in September 2009.
Under another contract with Vaasa Engineering, Mavel recently commissioned refurbishment units at the 450-kW Herrfors 1 and 410-kW Herrfors 2 hydro projects. Herrfors 1 involved replacement of an Escher Wyss turbine with a Mavel KA1560K3 turbine. Herrfors 2 involved renovation of a Tampella S-turbine.