Jellyfish 'invasion' causes Swedish nuclear reactor shutdown
STOCKHOLM (AFP) - A Swedish nuclear reactor was restarted on Wednesday following a three-day closure caused by a build-up of jellyfish in a cooling system, according to the operators.
The incident occured in reactor 3 at Oskarshamn power station on the Baltic Sea coast, which is run by OKG, a subsidiary of the German electricity company EON.
"It was a larger amount than we had ever seen. Every autumn we have to get rid of jellyfish, but not that many," OKG spokesman Emmy Davidsson said.
The company announced on Sunday that the reactor - Sweden's largest with a 1400 MW output and the world's largest boiling water reactor - was "manually shut down due to a large amount of jellyfish present at the cooling water intake".