> For Fukushima, it was a classic example of design failure (failsafes were supposed to work except they were badly designed, and there was too few of them), and no proper reaction to earlier warnings of the system in place being too weak. In a way, all the blame is clearly on TEPCO however we put it:

There's always at least two parties in a regulated environment like nuclear power. The government setting the baseline requirements and the operator adhering to them. I have not enough inside to say who to blame. On the other hand TEPCO is state owned, right, so maybe you should never set your own requirements when it comes to nuclear safety?