A member of an expert Japanese panel announced that a tsunami could put its reactors in dangers, but a Japanese government agency that had been evaluating the plant for years said it was safe, The Washington Post reports.
The nuclear plant was Fukushima Daiichi, and seismologist Yukinobu Okamura warned of tsunami in 2009 at a series of meetings to discuss the readiness of the Japanese nuclear plants.
An executive from Tokyo Electric Power Co. disagreed with Okamura, saying an earthquake would be a bigger threat.
When the 9.0-magnitude earthquake struck, Daiichi held its ground. It was the tsunami, with its 20-foot waves that hit the plants backup power supply, which resulted in large releases of radiation.