Fukushima Nuclear Accident 2011

Due to an earthquake and tsunami near the east coast of Japan the Fukushima Nuclear Power Plant lost all external power, and the backup systems were also wiped out. This led to the inability of the plant to cool itself, leading to radioactive leaks and explosions on site.

The severity rating of the Fukushima Nuclear Accident is International Nuclear and Radiological Event Scale (INES) Level 7, out of a possible 7. The only previous incident of this scale was Chernobyl; however, the fallout from Fukushima to date is far less than that of Chernobyl (the last figures released showed the radioactivity released to be a factor of 10 less, based on International Atomic Energy Agency (IAEA) data), even though enough radiation has escaped to classify the accident as Level 7.

All the data used in the charts is available from the data source downloads section for clarity, cross checking and future reference.

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