Most nuclear reactor waste is uranium, which by itself doesn't need long-term storage.

大多数核反应堆的废料是铀，它本身并不需要长期储存。

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But roughly 5 percent of reactor waste is highly radioactive fission products, including plutonium and other actinides.

但是约有百分之五的反应堆废料是高放射性裂变产物，包括钚和其他锕系元素。

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The material at Dounreay is not waste, it is a nuclear material from the fast breeder reactor programme that requires appropriate management.

敦雷的原料不是废料，而是来自快中子增殖反应堆计划的需要适当管理的原材料。

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Among other things, his team has designed a nuclear reactor that would use nuclear waste as its fuel.

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The No. 4 unit doesn't have live fuel in its reactor, but still holds waste fuel from earlier generation operations.

WSJ: Japan's Nuclear Crisis Escalates

In 2036, when Yucca Mountain is filled to capacity, there still will be 44, 000 tons of nuclear waste stored at reactor sites, she said.

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