...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physics of atomic nuclei >Variants of Regenerated Fissile Materials Usage in Thermal Reactors as the First Stage of Fuel Cycle Closing
【24h】

Variants of Regenerated Fissile Materials Usage in Thermal Reactors as the First Stage of Fuel Cycle Closing

机译：热反应器中再生裂变材料的变体作为燃料循环关闭的第一阶段

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

At present, 240 000 t of spent nuclear fuel (SF) has been accumulated in the world. Its long-term storage should meet safety conditions and requires noticeable finances, which grow every year. Obviously, this situation cannot exist for a long time; in the end, it will require a final decision. At present, several variants of solution of the problem of SF management are considered. Since most of the operating reactors and those under construction are thermal reactors, it is reasonable to assume that the structure of the nuclear power industry in the near and medium-term future will be unchanged, and it will be necessary to utilize plutonium in thermal reactors. In this study, different strategies of SF management are compared: open fuel cycle with long-term SF storage, closed fuel cycle with MOX fuel usage in thermal reactors and subsequent long-term storage of SF from MOX fuel, and closed fuel cycle in thermal reactors with heterogeneous fuel arrangement. The concept of heterogeneous fuel arrangement is considered in detail. While in the case of traditional fuel it is necessary to reprocess the whole amount of spent fuel, in the case of heterogeneous arrangement, it is possible to separate plutonium and U-238 in different fuel rods. In this case, it is possible to achieve nearly complete burning of fissile isotopes of plutonium in fuel rods loaded with plutonium. These fuel rods with burned plutonium can be buried after cooling without reprocessing. They would contain just several percent of initially loaded plutonium, mainly even isotopes. Fuel rods with U-238 alone should be reprocessed in the usual way.
机译：目前，全世界已积累了24万吨乏核燃料（SF）。其长期储存应符合安全条件，并需要可观的资金，每年都在增长。显然，这种情况不可能长期存在；最终，这将需要一个最终决定。目前，SF管理问题的几种解决方案正在考虑之中。由于大多数运行中的反应堆和在建的反应堆都是热反应堆，因此可以合理地假设，核电行业在近期和中期的结构将保持不变，并且有必要在热反应堆中使用钚。在本研究中，比较了SF管理的不同策略：长期储存SF的开放式燃料循环、在热反应堆中使用MOX燃料并随后长期储存MOX燃料的封闭式燃料循环，以及在非均质燃料布置的热反应堆中的封闭式燃料循环。详细考虑了非均质燃料布置的概念。在传统燃料的情况下，有必要对全部乏燃料进行再处理，而在非均质布置的情况下，有可能在不同的燃料棒中分离钚和U-238。在这种情况下，有可能在装有钚的燃料棒中几乎完全燃烧钚的裂变同位素。这些含有燃烧钚的燃料棒可以在冷却后掩埋，无需再处理。它们只含有最初装载的钚的百分之几，主要是同位素。仅使用U-238的燃料棒应以通常的方式进行再处理。

著录项

相似文献

  • 外文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号