More information on the plant disturbance at Olkiluoto 2

The Olkiluoto 2 plant unit (OL2) detached from the grid on Thursday 10th December at 12.22. The progression of events has become clearer, and it has now been confirmed that the situation was caused due to hot water moving into the filters of the reactor water clean-up system. The safety systems of the plant functioned as planned, and the disturbance did not cause danger to people or the environment. Restarting the plant requires careful inspection and testing.