TOKYO — Japan's nuclear regulators raised the severity level of the crisis at a stricken nuclear plant Tuesday to rank it on par with the 1986 Chernobyl disaster, citing the amount of radiation released in the accident. The regulators said the rating was being raised from 5 to 7 – the highest level on an international scale overseen by the International Atomic Energy Agency. However, there was no sign of any significant change at the tsunami-stricken Fukushima Dai-ichi nuclear plant. The new ranking signifies a "major accident" with "wider consequences" than the previous level, according to the Vienna-based IAEA.
"We have upgraded the severity level to 7 as the impact of radiation leaks has been widespread from the air, vegetables, tap water and the ocean," said Minoru Oogoda of Japan's Nuclear and Industrial Safety Agency. NISA officials said one of the factors behind the decision was that the cumulative amount of radioactive particles released into the atmosphere since the incident had reached levels that apply to a Level 7 incident.
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