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原帖由 fx0711 於 2013-4-3 09:49 AM 發表 
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At Chernobyl, explosions destroyed a reactor, releasing a cloud of radiation that contaminated large areas of Europe. At Fukushima, which was damaged by an earthquake, the reactors still have mostly intact containment vessels surrounding their nuclear cores. Japanese officials point out that at Chernobyl, the reactor itself exploded while still active. At Fukushima,
the magnitude nine earthquake and tsunami crippled the plant's cooling system, leading to a partial meltdown of the reactor. Earlier attempts to cool the reactor by hosing water from fire engines and helicopters left pools of contaminated water and flooded basements, hampering the containment operation and efforts to restart the cooling pumps. To make room for more highly radioactive liquid, the plant's operator,
Tokyo Electric pumped tonnes of contaminated water into the Pacific but stopped after the move was criticised by South Korea. Tokyo Electric appears to be no closer to restoring cooling systems at the reactors, critical to lowering the temperature of overheated nuclear fuel rods.
