TOKYO, April 12, Kyodo Japan on Tuesday raised the severity level of the ongoing emergency at the crippled Fukushima Daiichi nuclear power plant from level 5 to the maximum 7 on an international scale, recognizing that the tsunami-caused accident matches the world's worst nuclear catastrophe in 1986 at 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 plant is about 10 percent of that from the former Soviet nuclear plant.
The nuclear regulatory agency under the Economy, Trade and Industry Ministry and the Nuclear Safety Commission of Japan, a government panel, said that between 370,000 and 630,000 terabecquerels of radioactive materials have been emitted into the air from the Nos. 1 to 3 reactors of the plant....read on
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