Tepco knew over 10m high Tsunami may hit Fukushima nuc plant 3 years ago.
Fukushima nuc plant can only bear 5.7m height of Tsunami,so they commented this accident was because it was “beyond what they estimated” . IAEA also commented so.
However,Japan society of civil engineer reported 10m height of Tsunami may hit the plant,3 years ago.Vise president of Tepco was aware of the risk,they comment.Tepco did never take any action to reinforce the plant,and they finally submit the report “4 days ” before 311.