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    • 58. 发明公开
    • Reactor core for a light water cooled reactor, fuel assembly and control rod
    • Spaltzonefürmit LeichtwassergekühltenReaktor,Brennstabbündelund Steuerstab
    • EP0691657A1
    • 1996-01-10
    • EP95110557.6
    • 1995-07-06
    • HITACHI, LTD.
    • Takeda, RenzoAoyama, MotooMoriwaki, Masanao
    • G21C1/00G21C3/00G21C7/113
    • G21C1/084G21C1/00G21C3/00G21C7/113G21Y2002/201G21Y2002/601G21Y2004/101G21Y2004/30G21Y2004/60Y02E30/31Y02E30/39
    • The present invention has as an object to provide a reactor core for light water cooled reactor, a fuel assembly (3, 4) and a control rod (5, 10) intended for Pu multi-recycling at a breeding ratio of about 1.0, or 1.0 or more while keeping the economical or safety performance to the same level as in BWR now under operation, that is, while minimizing the change for the incore structures and maintaining the void coefficient negative.
      A reactor core for a light water cooled reactor having an effective fuel-to-water volume ratio of 0.1 to 0.6 by the combination of a dense lattice fuel assembly (1) constituted of fuel rods formed by adding Pu to degraded uranium, natural uranium, depleted uranium or low concentrated uranium, coolants at high void fraction of 45 % to 70 % and a cluster-type, Y-type or cruciform control rod.
    • 本发明的目的是提供一种用于轻水冷却反应器的反应堆芯,一种燃料组件(3,4)和一个控制棒(5,10),用于以约1.0的育种比例进行Pu多重循环,或者 1.0或更多,同时将经济或安全性能保持在与现在正在运行的BWR相同的水平,即尽可能减少腋窝结构的变化并保持空隙系数为负。 一种用于轻水冷却反应器的反应堆芯,其特征在于通过将Pu加入到退化的铀,天然铀,天然铀中形成的由燃料棒组成的致密格子状燃料组件(1)的组合,具有有效的燃料与水的体积比为0.1至0.6, 贫铀或低浓铀,高空隙率为45%至70%的冷却剂和簇型Y型或十字形控制棒。