7

INES Levels
INES N/A 
INES 4
INES 0
INES 5
INES 1
INES 6
INES 2
INES 7
INES 3

INES 7: Major accident

Impact on People and Environment:
  • Major release of radio­active ­material with widespread health and environmental effects r­equiring implementation of planned and extended ­ countermeasures.
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INES-event
INES 7

Re-evaluation of INES rating; Effect to the Nuclear Facilities from the earthquake on east area of Japan

In March 18, rating of the INES on the events in Fukushima Dai-ichi Nuclear Power Station, by the Tohoku Regional Pacific Ocean Offshore Earthquake is temporary estimated Rating 5. However, Nuclear and Industrial Safety Agency (NISA) estimated total amount of discharge from Fukushima Dai-ichi NPS, using the analytical result of the state of nuclear reactor under the cooperation of Japan Nuclear Energy Safety Organization (JNES). As a result of re-evaluation, total amount of discharged I131 is estimated at 1.3E17Bq, and Cs137 is estimated at 6.1E15Bq.

Category: Power Reactor Fukushima Daiichi »