With a VEI 6 happening there, a lil' bit of radioactivity would be one of your lesser problems, I'd guess. One bigger potential problem would be damming the Rhine there, and flooding large areas behind that dam way upstream, with many large chemical plants. And then the flood downstream, if that dam breaks down.

While I had no idea that Germany was volcanically active (thanks for the link!), this doesn't seem to be an ongoing thing.

Well, the area is categorised as volcanically active - I doubt if it is a very serious risk.

Mind you - nobody thought we got tsunamis in Scotland:

https://en.wikipedia.org/wiki/Storegga_Slide

Just to make clear: I'm completely comfortable with nuclear power and I live reasonably close to the remaining operational nuclear power station in Scotland:

https://www.antipope.org/charlie/blog-static/rants/nothing-l...