Fukushima, yes, which was actually a tsunami problem and an "insufficient preparation" problem (the plant's sea wall was built too low)

Arguably more hardship has been caused by the extended evacuation than whatever the radiation would have caused.

Then there is the horrific, grisly, and heartwrenchingly tragic demise of the two unfortunate nuclear plant workers who were haplessly involved in a criticality incident at the Joyo Fast Reactor in Tokai, September 1999 where a uranyl nitrate solution was poured into a precipitation tank of the wrong material...

...

(One could also, if one is crass, make a reference to nuclear weaponry issues, but that is pointedly a different technological exploration than energy in the same way that gasoline for internal combustion engines is a fundamentally different application than napalm or a fuel-air thermobaric munition even if they both rely on the inherent properties of the principal material involved)