https://www.trouw.nl/nieuws/bijna-meltdown-kernreactor-pette...
And that's the one that is public, there is at least one more that is still under wraps and possibly more than that. Nuclear is only as safe as the people running it and that is a major issue even before you bring in economics. You can't treat safety as a cost in installations like these and inevitably that's what happens. What I also find disingenuous is that in calculating the cost of electricity production from nuclear power capex required for the eventual dismantling isn't taken into account at all, and those costs are inevitably massive.
Seems like the incidents happened in part because the operators couldn't see in the dark after a power outage, and the emergency torch had been taken by someone to fix their car... :X You can't make this stuff up.
You can't fix human nature and that's the root cause of many of these problems. And because of that I'm very much against nuclear power, no matter what the short term advantages may seem to be. Sooner or later every plant needs to be de-commissioned, will have an incident or will end up as a target or a casualty of something or other. Multiply that by the number of power plants that you'd need to make the world reliant on nuclear power and the number of accidents would quickly rise above what is acceptable (if we're not already there).
Nuclear proponents are quick to argue that this was all with old technology and newer designs are safer but people are still the same and even new technology resulting in working installations will eventually see those same installations age.
I didn't remember to mention it because it was not an energy generation operation but a military one for nuclear weapon manufacturing.