3 Mile Island had completely minimal impact. And Fukishima, despite being a cataclysmic combination of unfortunate events and poor planning on that possibly happening, the impact there was also extremely minimal, with the only negative effects more on the evacuation reaction being way wider than necessary.

And, of course, all of that is with decades old facilities that lack many of the mechanisms of modern technology that even further protect and minimize any possible negative impacts.

Heck, a thorium nuclear plant physically can’t melt down.