Reactor waste remains hot as waste so why do we not pile it in a massive dump and cirulate water through it to raise steam or at least preheat water for heat generation?
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Thanks everyone for an informative and interesting discussion.
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It is done, just not a lot cause of cost. A company called Terrapower is working on a new type of reactor called a Traveling Wave Reactor, which, in theory, would be very efficient and exclusively use spent fuel.
It is entirely theoretical and computer models, but the models show it should work. Unfortunately, US laws were preventing them from building a test reactor. They were trying to build one in China, but Trumo killed it when he took office because of his Chinese foreign policies. Not sure where they are these days though.
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