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公开(公告)号：US4723578A
公开(公告)日：1988-02-09
申请号：US748318
申请日：1985-06-24
CPC分类号： F16L55/13 , F28F11/02 , C08L2201/12 , F28F2255/04 , Y10T29/49865
摘要： A steam generator tube repair assembly employs a stud having a shaft and a head which forms a transverse sealing surface. A driver wedge has a central axial bore for receiving the shaft and a generally frustoconical exterior surface for receiving a sealing sleeve. The sealing sleeve has a circumferentially extending sealing surface and an end surface which is adapted for sealing engagement with the sealing surface of the stud head. A coupling nut is tightened to force the driver wedge to swage the sealing sleeve for radial sealing engagement and also transverse sealing engagement. The driver wedge and or the sealing sleeve are formed of shape memory materials so that at a temperature below a transition temperature the diametral dimensions of the sealing sleeve are reduced and at a temperature above the transition temperature the diametral dimensions of the sealing sleeve are expanded into sealing engagement with the tube.
摘要翻译： 蒸汽发生器管修理组件采用具有形成横向密封表面的轴和头部的螺柱。 驱动器楔具有用于接收轴的中心轴向孔和用于接收密封套的大致截头圆锥形外表面。 密封套筒具有周向延伸的密封表面和适于与螺柱头部的密封表面密封接合的端面。 拧紧联接螺母以迫使驱动器楔形件挤压密封套以进行径向密封接合以及横向密封接合。 驱动楔和密封套由形状记忆材料形成，使得在低于转变温度的温度下，密封套的直径尺寸减小，并且在高于转变温度的温度下，密封套的直径尺寸扩大为 与管密封接合。
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公开(公告)号：US4199404A
公开(公告)日：1980-04-22
申请号：US822115
申请日：1977-08-05
摘要： A fuel-pellet composition for use in fast breeder reactors. Uranium carbide particles are mixed with a powder of uranium-plutonium carbides having a stable microstructure. The resulting mixture is formed into fuel pellets. The pellets thus produced exhibit a relatively low propensity to swell while maintaining a high density.
摘要翻译： 用于快速增殖反应堆的燃料颗粒组合物。 碳化铀颗粒与具有稳定微观结构的铀 - 钚碳化物粉末混合。 所得混合物形成燃料颗粒。 如此制备的颗粒在保持高密度的同时表现出相对低的膨胀倾向。
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公开(公告)号：US4235673A
公开(公告)日：1980-11-25
申请号：US868868
申请日：1978-01-12
申请人： Walter J. Mordarski
发明人： Walter J. Mordarski
摘要： Means for preventing chip penetration of fractured ceramic fuel into the cladding of a fast spectrum nuclear reactor fuel element is disclosed. Included in the fuel element external to the pellet column but internal of the cladding is a woven cylinder or web of fine wire or of bandage wrapped metallic ribbons. The cylindrical web acts to retain ceramic chips in their positions so that they do not become lodged between the pellets and the clad: which condition could lead to clad failure.
摘要翻译： 公开了用于防止断裂的陶瓷燃料芯片穿透到快速核反应堆燃料元件的包层中的手段。 包括在颗粒柱外部的燃料元件中，但是包层的内部是编织筒或细丝网或绷带缠绕的金属带。 圆柱形纤维网用于将陶瓷屑保持在它们的位置，使得它们不会沉积在颗粒和包层之间：哪种情况可能导致包层失效。
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公开(公告)号：US4578237A
公开(公告)日：1986-03-25
申请号：US530458
申请日：1983-09-09
CPC分类号： G21C17/063
摘要： An apparatus (10, 110, 210) including a containment capsule (12, 112, 212) a support member (16, 116, 216) removably disposed within the capsule and carrying therein a solid state track recorder material (20, 120, 220) and a layer of fissile material (20, 120, 220), and means (52) on the exterior of the capsule adapted to be remotely grasped for positioning the capsule adjacent to the fuel. The capsule is lowered into close proximity to the fuel, and positioned at a predetermined location for a period of time between about one hour and one day. The capsule is withdrawn from the fuel, the support member and recording member are withdrawn from the capsule, and the recording member is processed to reveal the fission track density, which is readily correlated to fuel burnup.
摘要翻译： 一种包括容纳胶囊（12,112,212）的装置（10,110,210），可拆卸地设置在所述胶囊内并在其中携带固态轨道记录器材料（20,120,220）的支撑构件（16,116,216） ）和一层易裂变材料（20,120,220）和在胶囊外部上的装置（52），其适于远程抓握以便将胶囊定位在与燃料相邻的位置。 将胶囊降低到靠近燃料的位置，并且在预定位置放置约1小时至1天之间的时间。 胶囊从燃料中取出，支撑构件和记录构件从胶囊中取出，并且处理记录构件以显示容易与燃料燃耗相关的裂变轨道密度。
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公开(公告)号：US4131511A
公开(公告)日：1978-12-26
申请号：US765462
申请日：1977-02-04
申请人： Walter J. Mordarski , Jerome Roth
发明人： Walter J. Mordarski , Jerome Roth
摘要： A nuclear fuel pin is formed of an elongated metallic tube, closed at each end, containing stacked fuel pellets and material including little, or no, fissionable material, and formed into porous, or bubbled, microspheres placed in the annulus between the pellets and the internal wall of the tube.
摘要翻译： 核燃料销由细长的金属管形成，每个端部封闭，包含堆叠的燃料颗粒和包含很少或不具有可裂变材料的材料，并且形成为放置在颗粒和颗粒之间的环中的多孔或鼓泡的微球体 管的内壁。
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