The Fukushima earthquake was the biggest in over 1000 years of known Japanese history, and it hit in the exact area to overwhelm the considerable tsunami walls.
Given that no security system can prevent 100% of accidents, that one seems like it's in the allowable error margin to me.
The construction flaw where some important machinery ended up under water is less forgivable, sure.
Given that no security system can prevent 100% of accidents, that one seems like it's in the allowable error margin to me.
The construction flaw where some important machinery ended up under water is less forgivable, sure.