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Another French nuclear reactor is shuttered by a jellyfish swarm

EDF reported on Thursday that a jellyfish swarm had reduced production by 2.4 gigawatts after it entered the filter of the pumping stations at the Paluel Nuclear Plant in France. This is the second instance where jellyfish has affected production within a month.

EDF reported that the electricity production at the 5.2 GW Paluel Nuclear Plant in northern France had been nearly halved late Wednesday, as the 4th reactor was shut off and the power of the 3rd reactor was reduced to preventive levels.

Paluel is connected to the English Channel and is cooled by its waters. Both native and invasive jellies have experienced larger breeding windows because of warmer temperatures.

The reactor number 1 is at full capacity, while the reactor number 2 is shut down for maintenance.

Gravelines Nuclear Plant was shut down in mid-August, after a "massive" and "unpredictable" jellyfish swarm entered its cooling system.

It is not the only time jellyfish have caused problems at nuclear power plants. In 2011, Scotland's Torness nuclear plant faced similar problems, while Gravelines was also disrupted.

Scientists warn of the possibility that these events will become more frequent due to global warming, arrival of invasive species in marine habitats, loss of habitat for predators and overfishing.

(source: Reuters)