Electricity production at Olkiluoto 3 was interrupted

The Olkiluoto 3 plant unit was in normal production when the turbine malfunction automatically interrupted the plant's electricity production. The plant operated as planned during the situation. The cause was the malfunction in generator seal oil system.

Edit 18.11.2024, 11:05 am. The repair is taking longer than expected, and based on the current information, the plant is estimated to return to electricity production in approximately two days.

Edit2 19.11.2024, 7:15 pm. Investigations and repairs related to the fault are taking more time than expected. According to current information, the plant is estimated to continue the electricity production on Thursday 21.11.2024.

Edit 3. 20 November 2024 at 10:20. Update on the repair schedule. Based on current information, the plant's electricity production is expected to resume on Friday, 22 November 2024.

Edit 4. 20.11.2024 at 12:10. Correction to the previous update. The plant's electricity production can resume as early as Thursday, 21 November 2024, but the plant will operate at a reduced power level until Friday.

The event has no impact on nuclear safety. Olkiluoto 1 and Olkiluoto 2 units are in normal electricity production.