Nope.
1. There is no "fusion power" now, so things don't go wrong. Fusion power has been "20 years away" for 50 years now.
2. Fission power "may" melt down if things go wrong, but highly dependent on the design of the system. It is supposedly very nearly impossible to make one go "boom," even on purpose.
Yeah. I got fusion and fission completely backward. Sorry. And yeah, again. There is no working fusion plant. I’m talking about what I read about the risks of fusion based power plants if it were to ever lead to a runaway chain reaction.
That’s all.