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    Fuel assembly for a nuclear reactor and a nuclear reactor core comprising such fuel assemblies
    1.
    发明授权
    Fuel assembly for a nuclear reactor and a nuclear reactor core comprising such fuel assemblies 失效
    核反应堆燃料组件和包含此类燃料组件的核反应堆核心

    公开(公告)号：US3787285A

    公开(公告)日：1974-01-22

    申请号：US3787285D

    申请日：1971-02-08

    申请人： ATOMENERGIKOMMISSIONEN

    发明人： MARSTRAND J

    IPC分类号： G21C3/322 ,  G21C3/34 ,  G21C3/344 ,  G21C3/32

    CPC分类号： G21C3/322 ,  G21C3/34 ,  G21C3/344 ,  Y02E30/38

    摘要： A fuel assembly in which the fuel rods are arranged in a hexagonal or square, regular pattern, but in which single rods are omitted systematically and deflectors substituted therefor, each deflector normally being situated in a duct, the partition of which consists of six or eight fuel rods, respectively. The deflectors are rigidly connected to grids between the fuel rods so that the rods may expand freely in the grids.

    摘要翻译： 一种燃料组件，其中燃料棒布置成六边形或正方形的规则图案，但是其中系统地省略了单个杆，并且由此替代了导向器，每个偏转器通常位于管道中，其分隔件由六个或八个 燃料棒。 导流板刚性地连接到燃料棒之间的栅格，使得杆可以在栅格中自由地膨胀。

    Method and a device, for determining the cross-sectional dimensions of the inner space of elongated, tubular bodies
    3.
    发明授权
    Method and a device, for determining the cross-sectional dimensions of the inner space of elongated, tubular bodies 失效
    用于确定延长的管状体的内部空间的横截面尺寸的方法和装置

    公开(公告)号：US3850026A

    公开(公告)日：1974-11-26

    申请号：US18346471

    申请日：1971-09-24

    申请人： ATOMENERGIKOMMISSIONEN

    发明人： HOLST H ,  NORTHEVED A ,  LUND S ,  HANSEN H

    IPC分类号： G01B7/06 ,  G01B7/312 ,  G01N29/00

    CPC分类号： G01B17/02 ,  G01B7/06 ,  G21C17/06

    摘要： When mapping out the internal cross-sectional dimensions of elongated, tubular bodies, correlated values of the external cross-sectional dimensions and wall thicknesses are measured along measuring lines from the outside of the body and the sum of the wall thicknesses measured along each measuring line is subtracted from the external cross-sectional dimension measured along the same or substantially the same measuring line. This avoids the use of measuring means in the interior of the tubular bodies, whereby the measuring can be carried out much faster and without the danger of injuring the internal surface of the bodies.

    摘要翻译： 当绘制细长的管状体的内部横截面尺寸时，沿着来自身体外部的测量线测量外部横截面尺寸和壁厚的相关值，并且沿着每个测量线测量的壁厚之和 从沿相同或基本相同的测量线测量的外部横截面尺寸减去。 这避免了在管状体的内部使用测量装置，由此可以更快地进行测量并且不会损坏物体的内表面的危险。

    Dispersion-strengthened zirconium products
    4.
    发明授权
    Dispersion-strengthened zirconium products 失效
    分散加强的ZIRCONIUM产品

    公开(公告)号：US3775823A

    公开(公告)日：1973-12-04

    申请号：US3775823D

    申请日：1971-08-18

    申请人： ATOMENERGIKOMMISSIONEN

    发明人： ADOLPH E ,  HANSEN N ,  JENSEN J ,  HINDLE E ,  MARSH D ,  KJOLLER J ,  DONALD P

    IPC分类号： C22C32/00 ,  B22F1/00 ,  B22F3/00 ,  B22F3/14

    CPC分类号： C22C32/0031 ,  Y10S75/951

    摘要： A method of producing dispersion-strengthened zirconium products containing fine particles of yttria, magnesia, cerium oxide or beryllium oxide in a matrix of zirconium or a zirconium alloy. Preferred products are such containing dispersed fine particles of yttria. In the method hydrided zirconium or zirconium alloy in a manner known per se is in a pulverulent state mixed with a fine powder of the oxide, and the mixture is then heated in vacuum with a view to expel hydrogen. Simultaneously or subsequently, the mixture is - in a compressed condition - sintered. This heating operation for expelling hydrogen and sintering the mixture is carried out at a temperature below 800*C, and preferably below 750*C. Prefered dispersion-strengthened zirconium products are characterized by having the metal oxide particles, of an average size not substantially exceeding 0,5 Mu and preferably between 0,01 and 0,5 Mu , dispersed in the said matrix having an average particle size not exceeding 5 Mu and preferably between 1 and 3 Mu .

    摘要翻译： 在锆或锆合金基体中制造含有氧化钇，氧化镁，氧化铈或氧化铍的微粒子的分散强化锆产品的方法。 优选的产品是含有分散的氧化钇细颗粒。 在该方法中，以本身已知的方式，氢化锆或锆合金处于与氧化物的细粉末混合的粉末状态，然后将混合物真空加热以排出氢气。 同时或随后，混合物在压缩状态下烧结。 用于排出氢气并烧结混合物的加热操作在低于800℃，优选低于750℃的温度下进行。优选的分散强化锆产物的特征在于具有平均尺寸基本上不超过的金属氧化物颗粒 分散在平均粒径不超过5微米，优选1至3微米的所述基质中的0.5微米，优选在0.01至0.5微米之间。