Finland’s nuclear safety authority said Thursday that radiation levels had risen following an incident at the Olkiluoto 2 nuclear unit in western Finland but there was no radioactivity leakage outside the plant and that the situation was under control. “There are no indications of a fuel leak from the incident and there are no longer any exceptional radiation levels inside the plant,” the authority, STUK, said in a statement. It said it had been informed of elevated radiation levels at the reactor at around 1 p.m. local time. “This is a significant and an exceptional incident and we consider it important to spread correct information about it,” Finland’s minister of social affairs and health Aino-Kaisa Pekonen told reporters.
Bellona 11th Dec 2020 read more »
The cause of the automatic emergency shutdown of the Olkiluoto 2 (OL2) reactor in southwest Finland on Thursday has become clear. The owner of the plant, nuclear power utility TVO, said in a Friday morning press release that the failure occurred when warmer-than-usual water entered the cleaning system of the reactor. “This released filter material into the reactor pressure vessel, in which it was activated. The radiation level in the steam line increased, which caused a momentary peak in the steam line’s radiation measurement. This launched safety systems as planned, and led to a reactor trip,” the statement said.
YLE 11th Dec 2020 read more »