Friday, March 18, 2011

Frantic Repairs Go On at Japanese Nuclear Plant but Little Progress in Cooling Fuel - NYTimes.com

As the crisis seemed to deepen, Japan’s nuclear safety agency raised the assessment of its severity from 4 to 5 on a 7-level international scale, news reports said. Level 4 is for incidents with local consequences while level denotes broader consequences. It was not immediately clear why the action had been taken. The partial meltdown at Three Mile Island in 1979 was rated 5 and the Chernobyl disaster in 1986 was rated 7.

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