Fukushima – INES scale rating

A new analysis prepared for Greenpeace Germany by nuclear safety expert Dr Helmut Hirsch shows that by March 23 2011, Japan’s nuclear crisis has already released enough radioactivity to be ranked at Level 7 on the International Nuclear Event Scale (INES). This is the scale’s highest level, and equal to the 1986 Chernobyl nuclear disaster.

Hirsch’s assessment, based on data published by the French government's radiation protection agency (IRSN) and the Austrian governments Central Institute for Meteorology and Geodynamics (ZAMG) found that the total amount of radionuclides iodine-131 and caesium-137 released between March 11 and March 23 have been so high that the Fukushima crisis already equates to three INES 7 incidents. 

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