Nuclear accident sends 'harmless' radioactive cloud over Europe

[caraher]

7. Harmless in Western Europe for sure

But the OP says

IRSN estimates a significant quantity of ruthenium-106 was released, between 100 and 300 terabecquerels, and that if an accident of this magnitude had happened in France it would have required the evacuation or sheltering of people in a radius of several kilometres around the accident site.

So yeah, in France nobody should be concerned... but that might not be as true if you live near the Mayak reprocessing facility

"Probes of radioactive aerosols from monitoring stations Argayash and Novogorny were found to contain radioisotope Ru-106" between September 25 and October 1, the Rosgidromet service said.

The highest concentration was registered at the station in Argayash, a village in the Chelyabinsk region in the southern Urals, which had "extremely high pollution" of Ru-106, exceeding natural background pollution by 986 times, the service said.

It did not point to any specific source of the pollution, but the Argayash station is about 30 kilometres from the Mayak nuclear facility, which in 1957 was the site of one of the worst nuclear disasters in history.

Today Mayak is a reprocessing site for spent nuclear fuel.

Sure, this is no Chernobyl, but this isn't the kind of thing you want happening in your reprocessing facility on a routine basis, either!