‘Massive and unpredictable’ swarm entered filter drums that pull in water, Gravelines operator EDF says
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The Gravelines nuclear power plant in northern France has been shut down after a swarm of jellyfish entered the filter drums that pull in cooling water, according to its state-owned operator, EDF.
The plant in northern France is one of the largest in the country and cooled from a canal connected to the North Sea.
Four reactors were affected by the incident, which occurred late on Sunday and led to the entire plant being shut down. Reactors 2, 3 and 4 stopped automatically when the filter drums of the pumping stations became packed with a “massive and unpredictable” swarm of jellyfish, and reactor 6 went offline shortly after, EDF said.
