[worik]

Safe? Really?

I expect that the containment vessels will get very radioactive.

But all a bit hypothetical, since none exist

[jodrellblank]

Yes they do exist, link elsewhere in this thread, Helion have a 7th generation nuclear fusion reactor fusing once every ten seconds or so. https://www.youtube.com/watch?v=_bDXXWQxK38

(It's not surplus of power, but it is repeatable fusion actually happening).

[worik]

That is not a fusion reactor