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ISIS Reports

ISIS Statement on Events at Fukushima Daiichi Nuclear Site in Japan

March 15, 2011

ISIS assesses that the situation at the Fukushima Daiichi nuclear plant has worsened considerably.  The explosion in the Unit 2 reactor, the third so far, and the fire in the spent fuel pond in the reactor building for Unit 41 means that this accident can no longer be viewed as a level 4 on the International Nuclear and Radiological Events (INES) scale that ranks events from 1 to 7.  A level 4 incident involves only local radiological consequences.  This event is now closer to a level 6, and it may unfortunately reach a level 7. 

A level 6 event means that consequences are broader and countermeasures are needed to deal with the radioactive contamination.  A level 7 event would constitute a larger release of radioactive material, and would require further extended countermeasures. The international community should increase assistance to Japan to both contain the emergency at the reactors and to address the wider contamination. We need to find a solution together.

1 “Japanese authorities also today informed the IAEA at 04:50 CET that the spent fuel storage pond at the Unit 4 reactor of the Fukushima Daiichi nuclear power plant is on fire and radioactivity is being released directly into the atmosphere.” 5:15 update:

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