Both units at the Loviisa nuclear power plant in Finland are back online after annual maintenance outages.
Unit 1 was down for 21 days until Aug. 16. The so-called short outage included normal scheduled maintenance and fuel replacement, and the low-pressure casings of the turbine were preserviced and modernized, a rotor exchanged in generator 1, one generator transformer and switch were replaced and evaporator inspections were carried out.
Unit 2 was down for 35 days until Sept. 19 as part of a four-year maintenance program. Besides the normal maintenance and fuel replacement, workers with Fortum and other contractors also modernized the primary coolant circuit pressure control, renewed the relief valves of the main steam turbine lines, replaced one main transformer and generator switch, renewed the circulating water piping, turbine maintenance, generator rotor replacement, extensive inspections of the evaporators as well as containment leak testing. About one-fourth of the fuel in both reactors was replaced.
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