> > Moreover the dust escaping from a nuclear plant may be ... > > What sort of dust is this? > https://en.wikipedia.org/wiki/Radionuclide

So this not dust escaping during normal operation. This is an important qualification to your original statement.

> Moreover quite different hypothesis are more and more widespread

I would expect the presence of strong data to reduce the number of viable hypotheses. Chris Busby was very creative coming up with https://en.wikipedia.org/wiki/Christopher_Busby#Second_event... but it looks like overfitting to scant data.

> If all the reactors in the fleet were N4, they would all have been shut down!

If they were all N4 they would have been kept running and had a rolling program of repairs. So I do not agree with your desire to have a heterogeneous fleet of reactors.

> nobody dies due to the lack of electricity

    we estimate that the energy-saving campaigns could have led to nearly 7,710

premature deaths annually in Japan

https://epic.uchicago.cn/wp-content/uploads/sites/2/2023/01/...

Also https://en.wikipedia.org/wiki/2025_Iberian_Peninsula_blackou...