Two 900-megawatt reactors on the French coast came off the grid before returning jellyfish could pack the seawater screens and trip them – Part 3 in our nuclear jellyfish series

Thanks again to Frances McKie for alerting us to this.

From autoNotion two days ago, the above and:

An automatic reactor trip is the safety system doing its job, and it’s arguably the most expensive way to solve a problem. The unit drops off the grid in seconds, and then you spend the next several days walking it back up to full power while somebody writes the report explaining why.

So you had a 5,400-megawatt site with nothing running at full power. Units 3 and 6 were off, units 1 and 2 were loafing along at reduced output, unit 4 had been down since August 10, and unit 5 was partway through its ten-year inspection.

If that sounds like a first for Western Europe’s largest nuclear plant, it isn’t.

The same site went to zero output for about ten days last August, and during the first swarm this month the last reactor still running flat out got throttled as well. What’s new is who pushed the button. It’s also been that kind of summer for the operator, which has already spent it idling inland reactors because the rivers beside them ran too warm.

https://www.autonocion.com/us/reactors-shut-by-hand-jellyfish-four-days/

We’ve been on the jellyfish trail for more than a year now but the media operating in Scotland have not been stung into action yet:


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