Japan’s Fukushima Nuclear Disaster Upgraded To Crisis Severity 7, Same As Chernobyl

The government’s Nuclear and Industrial Safety Agency upgraded its provisional evaluation based on an estimate that radioactive materials far exceeding the criteria for level 7 have so far been released into the external environment, but added that the release from the Fukushima nuclear plant is about 10 percent of that from the former Soviet nuclear plant, Kyodo reported.

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