公开(公告)号：US5642390A

公开(公告)日：1997-06-24

申请号：US599386

申请日：1996-02-09

申请人： Harald Cura ,  Martin Peehs ,  Gerhard Gradel ,  Alfons Roppelt ,  Erhard Ortlieb ,  Richard A. Perkins

发明人： Harald Cura ,  Martin Peehs ,  Gerhard Gradel ,  Alfons Roppelt ,  Erhard Ortlieb ,  Richard A. Perkins

IPC分类号： C04B35/00 ,  G21C3/62 ,  G21C21/02

CPC分类号： G21C3/623 ,  Y02E30/38

摘要： A uranium-containing nuclear-fuel sintered pellet containing UO.sub.2, (U, Pu)O.sub.2, (U, Th)O.sub.2, (U, RE)O.sub.2, (U, Pu, Th)O.sub.2, (U, Pu, RE)O.sub.2, (U, Th, RE)O.sub.2 or (U, Pu, Th, RE)O.sub.2, wherein RE=rare earth, has a sintered-pellet surface layer being formed of at least 80% by volume of a chemical boron compound UB.sub.x or (U, . . . )B.sub.x, wherein x=2;4;6 or 12, and a remainder of the sintered pellet containing at most 5% by volume of the chemical boron compound. A nuclear-reactor fuel assembly has a fuel rod containing such a uranium-containing nuclear-fuel sintered pellet in a cladding tube with the boron as a burnable absorber for thermal neutrons. The surface layer having the chemical boron compound is obtained by treating the nuclear-fuel sintered pellet with boron or a boron-containing chemical compound at an appropriately high treatment temperature.

摘要翻译： 含有UO2，（U，Pu）O2，（U，Th）O2，（U，RE）O2，（U，Pu，Th）O2，（U，Pu，RE）O2的含铀核燃料烧结颗粒 ，（U，Th，RE）O 2或（U，Pu，Th，RE）O 2，其中RE =稀土，具有烧结颗粒表面层，其由至少80体积％的化学硼化合物UBx或 （U，...）Bx，其中x = 2; 4; 6或12，剩余的烧结颗粒含有至多5体积％的化学硼化合物。 核反应堆燃料组件具有在包覆管中含有这种含铀的核燃料烧结颗粒的燃料棒，其中硼作为热中子的可燃性吸收剂。 具有化学硼化合物的表面层通过在适当高的处理温度下用硼或含硼化合物处理核燃料烧结颗粒而获得。

公开(公告)号：US4759221A

公开(公告)日：1988-07-26

申请号：US27484

申请日：1987-03-17

申请人： Erhard Ortlieb ,  Peter Wahode

发明人： Erhard Ortlieb ,  Peter Wahode

IPC分类号： G01B17/00 ,  G01B17/02 ,  G01N29/34 ,  G01N29/44 ,  G01N29/00

CPC分类号： G01N29/348 ,  G01N2291/02854

摘要： An apparatus for determining the depth of cracks in the surfaces of workpieces includes an ultrasonic transducer for sending ultrasonic signals to and receiving ultrasonic signals from the workpiece, an analyzer connected to the ultrasonic transducer for forming a frequency spectrum from the ultrasonic signals, an evaluating unit connected to the analyzer for determining an effective band width correlated with the depth of the cracks in the workpiece as the quotient of the integral of the frequency spectrum and the ordinate value of the center of concentration of the integrated surface of the frequency spectrum, and an indicator connected to the evaluating unit for indicating the depth of the cracks.

摘要翻译： 一种用于确定工件表面的裂纹深度的装置，包括：超声波换能器，用于向超声波信号发送超声波信号和从工件接收超声波信号;连接到超声波换能器的分析器，用于从超声波信号形成频谱;评估单元 连接到分析器，用于确定与工件中的裂纹深度相关的有效带宽，作为频谱的积分的积分和频谱的积分表面的集中中心的纵坐标值，以及 指示器连接到评估单元以指示裂缝的深度。

公开(公告)号：US06320925B1

公开(公告)日：2001-11-20

申请号：US09238857

申请日：1999-01-27

申请人： Reiner Manzel ,  Werner Jahreiss ,  Norbert Schmidt ,  Josef Steven ,  Peter Dewes ,  Friedrich Garzarolli ,  Erhard Ortlieb ,  Franz-Josef Bökers ,  Matthias Rudolph

发明人： Reiner Manzel ,  Werner Jahreiss ,  Norbert Schmidt ,  Josef Steven ,  Peter Dewes ,  Friedrich Garzarolli ,  Erhard Ortlieb ,  Franz-Josef Bökers ,  Matthias Rudolph

IPC分类号： G21C3352

CPC分类号： G21C3/352 ,  G21C3/3424 ,  G21Y2002/103 ,  G21Y2004/301 ,  G21Y2004/305 ,  Y02E30/40

摘要： A spacer of a fuel assembly having intersecting webs undergoes reduced longitudinal expansion as a result of corrosion during an operating period. The webs have intersection locations at which assembly gaps are provided. The assembly gaps have widths which correspond essentially, at most over a fraction of their total length, to the wall thickness of an intersecting web, but are wider in a remaining region. Since corrosion layers growing from an edge of an assembly gap toward the intersecting web cannot touch the web, no solid pressure, which could lead to longitudinal expansion, builds up.

摘要翻译： 具有相交腹板的燃料组件的间隔件在操作期间由于腐蚀而经历减小的纵向膨胀。 腹板具有提供组装间隙的交叉位置。 组装间隙的宽度基本上相当于其总长度的一小部分，与相交网的壁厚度相对应，但在其余区域中较宽。 由于从组装间隙的边缘朝向相交的幅材生长的腐蚀层不能接触幅材，所以不会产生可能导致纵向膨胀的固体压力。

公开(公告)号：US4938920A

公开(公告)日：1990-07-03

申请号：US216829

申请日：1988-07-08

申请人： Friedrich Garzarolli ,  Erhard Ortlieb ,  Eckard Steinberg ,  Hans Weidinger

发明人： Friedrich Garzarolli ,  Erhard Ortlieb ,  Eckard Steinberg ,  Hans Weidinger

IPC分类号： C22C16/00 ,  G21C3/07

CPC分类号： C22C16/00 ,  G21C3/07 ,  Y02E30/40 ,  Y10S376/90

摘要： A nuclear reactor fuel assembly includes a fuel rod containing nuclear fuel in a cladding tube formed of an iron-containing zirconium alloy. A fuel assembly skeleton to which the fuel rod is attached has a structural part formed of the iron-containing zirconium alloy. The iron-containing zirconium alloy has an oxygen content of from 0.1 to 0.16% by weight and contains alloy components of from 0 to 1% by weight of niobium, 0 to 0.8% by weight of tin, at least two metals from the group consisting of iron, chromium and vanadium having from 0.2 to 0.8% by weight of iron, 0 to 0.4% by weight of chromium and 0 to 0.3% by weight of vanadium, a total percent by weight of iron, chromium and vanadium of from 0.25 to 1% by weight, and a total percent by weight for niobium and tin in the range from 0 to 1% by weight.

摘要翻译： 核反应堆燃料组件包括在含铁锆合金形成的包层管中含有核燃料的燃料棒。 安装燃料棒的燃料组件骨架具有由含铁锆合金形成的结构部分。 含铁锆合金的氧含量为0.1〜0.16重量％，含有0〜1重量％的铌，0〜0.8重量％的锡的合金成分，至少2种以上的金属 的铁，铬和钒，其具有0.2至0.8重量％的铁，0至0.4重量％的铬和0至0.3重量％的钒，铁，铬和钒的总重量百分比为0.25至 1重量％，铌和锡的总重量百分比在0至1重量％的范围内。