CHANNEL CONFINEMENT SYSTEM AND METHOD FOR DRY-STORAGE OF BWR FUEL BUNDLES
    4.
    发明申请
    CHANNEL CONFINEMENT SYSTEM AND METHOD FOR DRY-STORAGE OF BWR FUEL BUNDLES 有权
    用于BWR燃料组件干燥储存的通道限制系统和方法

    公开(公告)号:US20100027733A1

    公开(公告)日:2010-02-04

    申请号:US12183667

    申请日:2008-07-31

    IPC分类号: G21C3/32

    摘要: A nuclear reactor fuel bundle confinement system including: a fuel bundle with an upper tie plate; a channel enclosing the fuel bundle; a handle for the fuel bundle extending above the fuel bundle; an upper fuel particle barrier positioned over the upper tie plate and above the fuel rods, wherein the fuel particle barrier has a permeable panel at least co-extensive with an open area of the upper tie plate; a slot in the permeable panel through which passes the handle, and a closure device on the fuel particle barrier having a closed position which covers the slot and an open position that leaves the slot open; a lower fuel particle barrier positioned over the lower tie plate and below the fuel rods, wherein the lower portion of the fuel bundle assembly is grasped by the lower fuel particle barrier.

    摘要翻译: 一种核反应堆燃料束约束系统,包括:具有上连接板的燃料束; 封闭燃料束的通道; 用于在燃料束上方延伸的燃料束的手柄; 上燃料颗粒屏障,其位于所述上连接板上方和所述燃料棒上方,其中所述燃料颗粒屏障具有至少与所述上连接板的敞开区域共同扩张的透气板; 透气板中的狭槽通过该手柄,并且燃料颗粒屏障上的封闭装置具有封闭位置,该封闭位置覆盖狭槽和使槽开放的打开位置; 燃料棒组件的下部被下部燃料颗粒屏障抓住的位于燃料棒上方的较低燃料颗粒阻挡层。

    Weld shape control system for TIG welding of small pressurization hole
    5.
    发明授权
    Weld shape control system for TIG welding of small pressurization hole 失效
    小型加压孔TIG焊接焊接形状控制系统

    公开(公告)号:US5448034A

    公开(公告)日:1995-09-05

    申请号:US245943

    申请日:1994-05-19

    IPC分类号: G21C21/02 B23K9/167 G21C3/10

    摘要: A TIG welding system for controlling the weld shape for the seal welding of a small pressurization hole in the end plug of nuclear fuel rods. The controlled shape of the seal weld enables improved ultrasonic detection capabilities. The system achieves the desired weld shape by controlling the pressure differential between the interior and exterior volumes of the fuel rod. The weld box pressure is decreased in accordance with Boyle's law while the weld material for sealing the hole is molten. The system uses an output from the weld electronics as an input to a programmable logic controller ("PLC"). After a programmed time delay, the PLC outputs a signal to a solenoid valve to open a "ballast" volume. The expansion of gas from the weld box into the ballast volume causes a sudden drop in pressure to a level below the pressure inside the fuel rod. As a result of this pressure differential, the molten weld material forms a concave weld upon solidification.

    摘要翻译: 一种TIG焊接系统,用于控制核燃料棒端塞中小型加压孔的焊接形状。 密封焊接的受控形状能够改善超声波检测能力。 该系统通过控制燃料棒的内部和外部体积之间的压力差来实现期望的焊接形状。 焊接箱压力按照Boyle定律减小,而用于密封孔的焊接材料熔化。 该系统使用焊接电子设备的输出作为可编程逻辑控制器(“PLC”)的输入。 经过编程的时间延迟后,PLC会向电磁阀输出信号以打开“镇流器”音量。 将气体从焊接箱膨胀到压载容积中导致压力突然下降到低于燃料棒内部压力的水平。 作为这种压差的结果,熔融焊接材料在凝固时形成凹形焊缝。

    Nuclear fuel rod having concave weld across pressurization hole in end
plug
    7.
    发明授权
    Nuclear fuel rod having concave weld across pressurization hole in end plug 失效
    核燃料棒在端塞中的加压孔上具有凹形焊缝

    公开(公告)号:US5345488A

    公开(公告)日:1994-09-06

    申请号:US88950

    申请日:1993-07-12

    IPC分类号: G21C21/02 B23K9/167 G21C3/10

    摘要: A TIG welding system for controlling the weld shape for the seal welding of a small pressurization hole in the end plug of nuclear fuel rods. The controlled shape of the seal weld enables improved ultrasonic detection capabilities. The system achieves the desired weld shape by controlling the pressure differential between the interior and exterior volumes of the fuel rod. The weld box pressure is decreased in accordance with Boyle's law while the weld material for sealing the hole is molten. The system uses an output from the weld electronics as an input to a programmable logic controller ("PLC"). After a programmed time delay, the PLC outputs a signal to a solenoid valve to open a "ballast" volume. The expansion of gas from the weld box into the ballast volume causes a sudden drop in pressure to a level below the pressure inside the fuel rod. As a result of this pressure differential, the molten weld material forms a concave weld upon solidification.

    摘要翻译: 一种TIG焊接系统,用于控制核燃料棒端塞中小型加压孔的焊接形状。 密封焊接的受控形状能够改善超声波检测能力。 该系统通过控制燃料棒的内部和外部体积之间的压力差来实现期望的焊接形状。 焊接箱压力按照Boyle定律减小,而用于密封孔的焊接材料熔化。 该系统使用焊接电子设备的输出作为可编程逻辑控制器(“PLC”)的输入。 经过编程的时间延迟后,PLC会向电磁阀输出信号以打开“镇流器”音量。 将气体从焊接箱膨胀到压载容积中导致压力突然下降到低于燃料棒内部压力的水平。 作为这种压差的结果,熔融焊接材料在凝固时形成凹形焊缝。