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    • 3. 发明授权
    • Core spray line coupling apparatus and methods
    • 核心喷涂线耦合装置及方法
    • US6131962A
    • 2000-10-17
    • US15429
    • 1998-01-29
    • Grant Clark JensenJeffrey Lee Thompson
    • Grant Clark JensenJeffrey Lee Thompson
    • F16L21/08G21F1/04F16L17/00
    • F16L21/08G21F1/042G21Y2004/601Y10S285/905
    • Coupling apparatus and methods for replacing a core spray line downcomer pipe coupled to a shroud T-box are described. In one embodiment, the coupling apparatus includes a seal ring, a mating flange, a housing, at least one coupling bolt, at least one spherical washer, and at least one lateral pin. The thermal expansion coefficient of the coupling bolt is lower than the thermal expansion coefficient of the seal ring, mating flange, and housing. After extending the downcomer pipe into the housing, the seal ring is inserted into the opposite end of the housing adjacent the downcomer pipe. The seal ring is then seated on the mating flange seat. The two seats allow the downcomer pipe to be rotational misaligned with the coupling apparatus. The coupling bolts extend through the mating flange and the housing to rigidly secure the downcomer pipe to the coupling apparatus. Lateral pins extend through the housing and the downcomer pipe to provide vertical and torsional load transfer from the downcomer pipe to the coupling apparatus. In addition, the coupling apparatus includes a cylindrical pipe, an elbow, a draw bolt, an anchor plate, and a block. The elbow is configured to receive the T-box extending from the shroud. In one embodiment, the draw bolt bolts extend through the anchor plate, the T-box, the elbow, and the block to secure the coupling apparatus to the shroud.
    • 描述了用于替换耦合到护罩T盒的芯喷射线降液管的耦合装置和方法。 在一个实施例中,联接装置包括密封环,配合凸缘,壳体,至少一个联接螺栓,至少一个球形垫圈和至少一个横向销。 联轴螺栓的热膨胀系数低于密封圈,配合法兰和外壳的热膨胀系数。 在将降液管延伸到壳体中之后,密封环插入到与降液管相邻的壳体的相对端。 然后将密封圈安装在配合法兰座上。 两个座位允许下降管与联接装置旋转不对准。 联接螺栓延伸穿过配合法兰和壳体,以将降液管刚性地固定到联接装置上。 横向销延伸通过壳体和降液管,以提供从降液管到联接装置的垂直和扭转载荷传递。 此外,联接装置包括圆柱形管,弯头,拉伸螺栓,锚板和块。 肘部被配置为接收从护罩延伸的T形盒。 在一个实施例中,牵引螺栓螺栓延伸穿过锚板,T型箱,弯头和块,以将联接装置固定到护罩上。
    • 6. 发明申请
    • Method and compositions for grouting decommissioned nuclear reactor components
    • 注入退役的核反应堆组件的方法和组成
    • US20040202273A1
    • 2004-10-14
    • US10402535
    • 2003-03-28
    • Patrick J. Stephens
    • G21C019/00
    • G21D1/003G21Y2002/304G21Y2002/60G21Y2004/40G21Y2004/601Y02E30/40
    • A method for grouting a decommissioned nuclear reactor containing residual water. A first, water-absorbent grout is used to grout the bottom portion of the reactor vessel. The water-absorbent grout is formed of cement and a water-absorbent particulate material, such as expanded perlite, exfoliated vermiculite or granulated bentonite. Excess water is absorbed by the particulate material, so that the residual water is incorporated in the fill material when it sets. A set retarder may be included to extend the time for uptake of residual water by the particulate material. Foam may also be included to reduce density and increase pumpability. The remaining, upper portion of the reactor vessel is grouted using lightweight cellular cement grout, lacking the water-absorbent particulate material, so that total weight of the fill remains low enough that the grouted vessel can be removed using the facility's installed crane system. Because the residual water is incorporated in the first, water-absorbent grout, the problem of residual water causing dissipation and collapse of the bubble structure in the lightweight cellular cement grout is obviated.
    • 一种用于灌浆含有残留水的退役核反应堆的方法。 使用第一种吸水剂浆料来灌浆反应容器的底部。 吸水剂浆料由水泥和膨胀珍珠岩,剥离蛭石或粒状膨润土等吸水性颗粒材料形成。 多余的水被颗粒材料吸收,使残留的水被装入填充材料中。 可以包括一组缓凝剂以延长由颗粒材料吸收残留水的时间。 还可以包括泡沫以降低密度并增加泵送性。 反应器容器的剩余的上部使用轻质的多孔水泥浆灌浆,缺少吸水性颗粒材料,使得填充物的总重量足够低,使得可以使用设施安装的起重机系统去除灌浆容器。 由于残留的水被并入第一吸水剂浆料中,所以消除了轻质多孔水泥浆中残留水引起泡沫结构耗散和塌陷的问题。