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    Reactor core for a light water cooled reactor, fuel assembly and control rod
    2.
    发明公开
    Reactor core for a light water cooled reactor, fuel assembly and control rod 失效
    Spaltzonefürmit LeichtwassergekühltenReaktor，Brennstabbündelund Steuerstab

    公开(公告)号：EP0691657A1

    公开(公告)日：1996-01-10

    申请号：EP95110557.6

    申请日：1995-07-06

    申请人： HITACHI, LTD.

    发明人： Takeda, Renzo ,  Aoyama, Motoo ,  Moriwaki, Masanao

    IPC分类号： G21C1/00 ,  G21C3/00 ,  G21C7/113

    CPC分类号： G21C1/084 ,  G21C1/00 ,  G21C3/00 ,  G21C7/113 ,  G21Y2002/201 ,  G21Y2002/601 ,  G21Y2004/101 ,  G21Y2004/30 ,  G21Y2004/60 ,  Y02E30/31 ,  Y02E30/39

    摘要： 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.

    摘要翻译： 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。

    Reactor core for a light water cooled reactor and control rod
    4.
    发明公开
    Reactor core for a light water cooled reactor and control rod 失效
    Reaktorkern einesleichtwassergekühltenReaktors und Steuerstab

    公开(公告)号：EP0856852A1

    公开(公告)日：1998-08-05

    申请号：EP98104267.4

    申请日：1995-07-06

    申请人： Hitachi, Ltd.

    发明人： Takeda, Renzo ,  Aoyama, Motoo ,  Moriwaki, Masanao

    IPC分类号： G21C7/113 ,  G21C1/08 ,  G21C3/00

    CPC分类号： G21C1/084 ,  G21C1/00 ,  G21C3/00 ,  G21C7/113 ,  G21Y2002/201 ,  G21Y2002/601 ,  G21Y2004/101 ,  G21Y2004/30 ,  G21Y2004/60 ,  Y02E30/31 ,  Y02E30/39

    摘要： The present invention relates to a control rod (2) to be inserted between fuel assemblies loaded to a reactor core for a boiling water reactor, wherein wings (5) are arranged such that each spacing between the wings is 120 degrees and center lines extending from the respective wings in a horizontal cross section of the control rod constitute a regular triangle. Further the invention relates to a reactor core for a boiling water reactor having hexagonal fuel assemblies (1; 6; 9) containing fuels comprising uranium enriched with plutonium or plutonium and actinoid nuclides and Y-type control rods, wherein the Y-type control rod is a control rod according to claim 1, and the hexagonal fuel assembly has fuel rods (3) arranged in a regular triangular lattice pattern so as to form three sets of fuel rod rows, each set of fuel rod rows are parallel with a pair of opposing sides of the hexagonal fuel assembly, and the number of rows in two sets of fuel rod rows is equal to each other and is greater by one row than that of the remaining one set of fuel rod rows among the three sets of fuel rod rows.

    摘要翻译： 本发明涉及一种控制杆（2），其插入在装载到沸水反应堆的反应堆堆芯的燃料组件之间，其中翼（5）被布置成使得翅膀之间的每个间隔为120度，中心线从 控制棒的水平横截面中的各个翼构成正三角形。 此外，本发明涉及一种用于沸水反应器的反应堆芯，其具有含有富含钚或钚的铀和锕系核素和Y型控制棒的燃料的六方燃料组件（1; 6; 9），其中Y型控制棒 根据权利要求1所述的控制杆，所述六角形燃料组件具有以规则的三角形格子图案排列的燃料棒（3），以形成三组燃料棒排，每组燃料棒排平行于一对 六组燃料组件的相对侧和两组燃料棒排中的排数彼此相等，并且比三组燃料棒排中剩下的一组燃料棒列大一排 。