Even if the situation deteriorated to the worst case, Fukushima nuclear power plant accident will not be serious to the extent of the Chernobyl nuclear accident.

The Chernobyl nuclear power plant accident in the Soviet Union sent radioactive dust particles hundreds and even thousands of kilometers away, with health effects occurring close in.

The worst problems continued to be at Fukushima Daiichi, which appeared to be the most serious involving a nuclear plant since the Chernobyl disaster.