Fuel assembly of fast breeder reactor
    2.
    发明授权
    Fuel assembly of fast breeder reactor 失效
    快速增殖反应堆的燃料组装

    公开(公告)号:US4147591A

    公开(公告)日:1979-04-03

    申请号:US811140

    申请日:1977-06-28

    申请人: Kazuyoshi Miki

    发明人: Kazuyoshi Miki

    IPC分类号: G21C3/328 G21C3/336 G21C3/08

    CPC分类号: G21C3/336 Y02E30/40

    摘要: This invention relates to fuel assembly for Fast Breeder Reactor, such as wire spacer fuel assembly, in which the thickness of cladding tubes in the upper end portion of fuel pins positioned in the peripheral region of the assembly is made larger than that of the remaining portion. Thus, according to the present invention, a bundle of the fuel pins can be restrained from displacement in one direction in the assembly when the fuel pins are deformed by heat and neutron radiation in operation of a nuclear reactor, and further the sectional portion of the fuel pins can be prevented from deformation caused by a load externally operated on the fuel pins. Furthermore, the thickness of the cladding tubes can be prevented from reduction caused by fretting corrosion which is caused by the contact of the cladding tubes with a wrapper tube.

    摘要翻译: 本发明涉及用于快速饲养堆的燃料组件,例如线间隔件燃料组件,其中定位在组件的周边区域中的燃料销的上端部分中的包层管的厚度大于剩余部分的厚度 。 因此,根据本发明,当燃料销在核反应堆运行时通过热和中子辐射而变形时,组装中的一束燃料销可以被限制在组装中的一个方向上的位移,而且, 可以防止燃料销由外部在燃料销上操作的负载引起的变形。 此外,可以防止包层管的厚度由于包层管与包裹管的接触而引起的微动腐蚀。

    Method of and apparatus for evaluating deformation of channel box of
fuel assembly for use in nuclear reactor
    3.
    发明授权
    Method of and apparatus for evaluating deformation of channel box of fuel assembly for use in nuclear reactor 失效
    用于核反应堆的燃料组件通道箱的变形评估方法和装置

    公开(公告)号:US4988476A

    公开(公告)日:1991-01-29

    申请号:US404344

    申请日:1989-09-07

    IPC分类号: G21C17/06

    CPC分类号: G21C17/06

    摘要: Evaluation for deformations of the channel box of a fuel assembly in a nuclear reactor core in which deformations of the channel box which has been used for exposure so as to be deformed are estimated for future exposure through computation and process of data of core characteristics, data of material properties and shapes of channel boxes, data of initial deformations of the channel box, data of loading patterns and the like, thereby to judge whether the estimated deformations are agreeable for reusing the channel box in the future exposure, or not.

    摘要翻译: 评价核反应堆堆芯中的燃料组件的通道箱的变形,其中已经用于暴露以变形的通道箱的变形通过计算和核心特性数据的处理被估计以用于将来的曝光 通道盒的材料特性和形状,通道盒的初始变形的数据,加载模式的数据等,从而判断估计的变形是否适合于在将来的曝光中重新使用通道盒。