Increase the accident level of Fukushima Daiichi Nuclear Power Station from 4 to 5, to the same value as Three Mile Island nuclear power plant accident

According to an interview by NISA, at 17:49 the accident at Fukushima Daiichi Nuclear Power Plant was raised from the International Nuclear Energy Evaluation Scale (INES) level 4 to 5.

this isTokai village JCO criticality accidentIt is the domestic highest level exceeding the level 4 of the country,Three Mile Island nuclear power plant accident(Level 5) accident that is accidental.

Details are as below.
According to the NISA 's interview started at 17:51, he said he raised the series of accidents that occurred at Fukushima Daiichi Nuclear Power plant at 17:49 to level 5 of the International Atomic Energy Evaluation Scale (INES).

Regarding this accident, it was originally designated as Level 3, and at the stage of the early March 13 thProvisionally Level 4It was classified into.

Traditionally, the highest accident occurred in Japan was the 1999Tokai village JCO criticality accidentAt level 4, indicating that this accident has been classified as the worst accident in the country.

Also, in 1979Three Mile Island nuclear power plant accidentIt is also the same class accident as the accident.

In addition, in 1986 that is said to be the world's worst nuclear accidentChernobyl nuclear power plant accidentIs classified as level 7 (maximum value).

2011/03/18 18: 19
Asahi.com (Asahi Shimbun): Units 1 to 3 are equivalent to Level 5 Three Mile NISA - Society

Rising to the severity level of Fukushima Daiichi nuclear power plant "level 5": Society: YOMIURI ONLINE (Yomiuri Shimbun)