Annual outages start in Olkiluoto

Annual outages have started at TVO's nuclear power plant. For Olkiluoto 1, the outage is this year a one-week refuelling outage, while Olkiluoto 2 will undergo a maintenance outage expected to take about 17 days.

Olkiluoto 1 was disconnected from the national grid on Sunday evening, 12 May. In addition to refuelling, also once-a-year periodical maintenance activities and tests as well as fault repairs will be carried out during the outage.

The maintenance outage of Olkiluoto 2 will start on 26 May. The most significant activities to be carried out, apart from refuelling, include the replacement of low-voltage switchgear in two subsystems, the repair of the stator in a generator, as well as the leak-tightness test of the reactor containment. According to the preliminary plan, the outage will be completed by 13 June.

TVO's own personnel are supplemented by at most some 800 subcontractor employees for the duration of the outages.

For more information, please contact:

Mikko Kosonen, Senior Vice President, Production, tel. +358 2 8381 2100.

Teollisuuden Voima Oyj is a Finnish nuclear power company founded in 1969 for safe and reliable production of electric energy to the Finnish society at a reasonable price. The nuclear power generated at TVO's Olkiluoto plants accounted in 2012 for ca. one sixth of the total energy consumption in Finland. Clean energy production not only benefits the Finnish society but also contributes to the global reduction of environmental impact.