Sentences with phrase «rate nuclear accidents»

Following a massive underestimate straight after the earthquake and tsunami that triggered the crisis, in April NISA said that between 370,000 and 630,000 terabecquerels were released between 11 and 15 March, putting the crisis at level 7, the most severe category on the international scale used to rate nuclear accidents.

Not exact matches

Japanese officials initially rated the incident a level 4, an «accident with local consequences,» on the seven - tier International Nuclear and Radiological Event Scale (INES), but Princeton University physicist Frank von Hippel told The New York Times that the Fukushima Daiichi situation is «way past Three Mile Island already.»

This raised the original rating from level 5 and puts the Fukushima Daiichi disaster technically in the same category as Chernobyl, although the quantity of discharged radioactive materials in Japan so far is about 10 percent of what was released by the Chernobyl reactor explosion, considered history's worst nuclear accident.