> You seem to suggest that the fact that Fukushima was not adequately prepared for this tsunami was human failure, presumably because they should have expected such a tsunami to occur.
For your information, in France where we use nuclear energy a lot, we look for the most catastrophic events of the last 100 years to see how we protect our infrastructure.
The Japanese looked for the last 50, but there were a tsunami of similar height 85 years ago.
Also the local authority of nuclear security has made a few reports were they recommended to increase the height of the seawalls. Several times. Never followed.
And last but not least, the accident could have been prevented, but has been badly handled. With Japanese hiding information, not cooperating with trained international nuclear-firefighters, and minimizing the scale of the incident until the last minute. This is the biggest mistake of all, compromising lives, resources, ocean and earth...
How is it not a human failure ?