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71. 发明授权

US5001949A Apparatus and method for removing nuclear fuel assembly end pieces 失效
标题翻译：用于去除核燃料组件端部件的装置和方法
公开(公告)号：US5001949A
公开(公告)日：1991-03-26
申请号：US284519
申请日：1988-12-15
申请人： Jean-Albert Beneck , Claude Quayre , Jean Moreau , Daniel Vermeille
发明人： Jean-Albert Beneck , Claude Quayre , Jean Moreau , Daniel Vermeille
IPC分类号： G21C19/33 , G21C19/34
CPC分类号： G21C19/34 , Y10T82/16672
摘要： An apparatus is used for cutting guide tubes of a nuclear fuel assembly below an end-piece and removing the end-piece. The apparatus includes a mount which may be removably locked and centered on the end-piece. Cutting tools insertable in the guide tubes each include a hollow shaft whose end part is split by longitudinal slits into radially expandable fingers each having a cutting edge. A stem movable axially along each shaft cooperates therewith for spreading the fingers out radially and retracting them. The shafts are mounted for rotation on a plate which is vertically movable with respect to the mount by a jack and carries a motor for simultaneously rotating all shafts. The shafts are carried by an expansion unit movable vertically with respect to the plate by a jack and including the stems. A method for separating the end-piece with the apparatus is also described.
摘要翻译：一种装置用于在端件下方切割核燃料组件的导管并移除端件。该装置包括可拆卸地锁定并位于端件上的安装件。可插入引导管中的切削刀具各自包括中空轴，其中端部由纵向狭缝分成可分别具有切削刃的可径向扩张的指状物。沿着每个轴可轴向移动的杆与其配合，用于使指状物径向扩张并收回。轴安装在一个可通过千斤顶相对于安装座垂直移动的板上旋转，并承载用于同时旋转所有轴的马达。轴由一个膨胀单元承载，该膨胀单元通过千斤顶相对于板垂直移动并且包括杆。还描述了用该装置分离端件的方法。

72. 发明授权

US4968204A Pusher for magazine of irradiated fuel elements 失效
标题翻译：辐射燃料元件杂志的推进器
公开(公告)号：US4968204A
公开(公告)日：1990-11-06
申请号：US316499
申请日：1989-02-27
申请人： Richard Griveau , Daniel Kerlau , Daniel Tucoulat , Jean Colas , Robert Pellier
发明人： Richard Griveau , Daniel Kerlau , Daniel Tucoulat , Jean Colas , Robert Pellier
IPC分类号： G21C19/37 , B26D7/00 , G21C19/33 , G21C19/36
CPC分类号： G21C19/36 , Y10S83/93
摘要： This invention relates to a pusher placed in a magazine for irradiated fuel elements which allows displacement thereof for the cutting operations. The pusher according to the invention allows the displacement of elements of small section in a magazine of large section. At the end of a cutting operation, the pusher applies its blank against the auxiliary holding clamp forming a continuous surface and the element is pushed by a blade, the body of the pusher being immobilized.
摘要翻译：本发明涉及一种放置在用于辐射燃料元件的料仓中的推动器，其允许其移动用于切割操作。根据本发明的推动器允许在大截面的仓库中的小部分的元件的位移。在切割操作结束时，推动器将其坯料用于形成连续表面的辅助夹持件，并且元件被刀片推动，推动器的主体被固定。

73. 发明授权

US4822554A Reconstitution and repair system for nuclear fuel rod assemblies 失效
标题翻译：核燃料棒组件的修复和修复系统
公开(公告)号：US4822554A
公开(公告)日：1989-04-18
申请号：US916682
申请日：1986-10-08
申请人： John D. Wood , Alan Savinell , Charles H. Roth, Jr. , Frederick J. Ellingson , George F. Dailey
发明人： John D. Wood , Alan Savinell , Charles H. Roth, Jr. , Frederick J. Ellingson , George F. Dailey
IPC分类号： G21C19/33 , G21C3/335 , G21C19/10 , G21C19/32
CPC分类号： G21C3/335 , G21Y2002/201 , G21Y2002/205 , G21Y2002/206 , G21Y2002/301 , G21Y2002/302 , G21Y2002/304 , G21Y2002/501 , G21Y2004/401 , G21Y2004/501 , Y02E30/40
摘要： An improved system for repairing and reconstituting a fuel rod assembly in the spent fuel pool of a nuclear power plant is disclosed herein. The improved system includes a height-adjustable elevator and carriage assembly for lifting and inverting a pair a fuel assemblies with their bottom ends adjacent one another, a length-adjustable rod handling tool having a gripper for gripping, lifting, lowering and ungripping a fuel rod, and a dual-axis tool positioner mountable over the bottom ends of the inverted, adjacent fuel assemblies. The tool positioner includes a funnel-shaped tool guide that is movable over the bottom ends of the fuel assemblies for receiving and positioning the gripper of the rod handling tool. The improved system may be adjusted for use in spent fuel pools of substantially different dimensions and water levels without the need for additional parts, and may be operated by only two technicians.
摘要翻译：本文公开了一种用于在核电站的乏燃料池中修复和重建燃料棒组件的改进系统。改进的系统包括高度可调节的升降机和托架组件，用于提升和翻转一对燃料组件，其底端彼此相邻，长度可调的杆处理工具具有夹持器，用于夹紧，提升，降下和取消夹住燃料棒，以及可安装在倒置的相邻燃料组件的底端上的双轴工具定位器。工具定位器包括漏斗形工具引导件，其可在燃料组件的底端上移动以接收和定位杆处理工具的夹持器。可以将改进的系统调整为用于基本上不同尺寸和水位的乏燃料池，而不需要额外的部件，并且可以仅由两名技术人员操作。

74. 发明授权

US4715111A Remote repair system for nuclear fuel rod assemblies 失效
标题翻译：核燃料棒组件远程维修系统
公开(公告)号：US4715111A
公开(公告)日：1987-12-29
申请号：US746897
申请日：1985-06-20
申请人： Anoop Kapoor , Edward J. Choby , Thomas J. Kramer , James E. Ranieri , Charles H. Roth, Jr. , Donald E. Scheffer , John E. Spehar, Jr. , Csaba Bessko , Robert M. Blumstein
发明人： Anoop Kapoor , Edward J. Choby , Thomas J. Kramer , James E. Ranieri , Charles H. Roth, Jr. , Donald E. Scheffer , John E. Spehar, Jr. , Csaba Bessko , Robert M. Blumstein
IPC分类号： G21C19/33 , G21C3/335 , G21C19/26 , B23P19/00 , B23P21/00 , B23Q15/00
CPC分类号： G21C3/335 , G21C19/26 , G21Y2002/202 , G21Y2002/206 , G21Y2002/303 , G21Y2002/501 , G21Y2004/501 , G21Y2004/502 , Y02E30/40 , Y10T29/4973 , Y10T29/49899 , Y10T29/49901 , Y10T29/53013 , Y10T29/53087 , Y10T29/531
摘要： A system for remotely repairing nuclear fuel rod assemblies is disclosed herein. Generally, the system comprises a rod handler for gripping, lifting, lowering and ungripping a selected fuel rod, a work station for securing the nuclear fuel rod assembly to be repaired into a desired location, and a positioner device for laterally positioning the rod handler over a selected rod in the fuel assembly secured within the work station. The rod handler includes a contractable collet for gripping and ungripping a desired fuel rod, and a rod sensor concentrically disposed within the collet for sensing when a rod is in a grippable position. The positioner includes a movable carriage which is slidably mounted onto a frame assembly by means of a pair of rail and bearing mechanisms. The system also includes a microcomputer for controlling the manner in which the positioner positions the rod handler, as well as gripping, lifting, lowering and ungripping motions of the handler itself. In order to maximize system safety, the microcomputer is programmed to deactuate the rod handler when it detects the handler is exerting an excessive amount of tensile force onto the rod.
摘要翻译：本文公开了用于远程修复核燃料棒组件的系统。通常，系统包括用于夹紧，提升，降低和取下所选择的燃料棒的杆处理器，用于将待修复的核燃料棒组件固定到期望位置的工作站以及用于将杆处理器侧向定位的定位器装置燃料组件中的选定的杆固定在工作站内。杆处理器包括用于夹紧和取下所需燃料棒的可收缩夹头，以及同心地设置在夹头内的杆传感器，用于当杆处于可抓握位置时进行感测。定位器包括可移动的滑架，其通过一对轨道和轴承机构可滑动地安装在框架组件上。该系统还包括微型计算机，用于控制定位器定位杆处理器的方式，以及抓握，提升，降低和解除处理器本身的运动。为了最大化系统安全性，微型计算机被编程为当检测到处理器对杆施加过大的张力时，使杆处理器停用。

75. 发明授权

US4664875A Top nozzle removal and replacement fixture and method in a reconstitutable fuel assembly 失效
标题翻译：可再燃燃料组件中的顶部喷嘴拆卸和更换夹具和方法
公开(公告)号：US4664875A
公开(公告)日：1987-05-12
申请号：US670729
申请日：1984-11-13
申请人： John M. Shallenberger , Stephen J. Ferlan
发明人： John M. Shallenberger , Stephen J. Ferlan
IPC分类号： G21C19/33 , G21C3/30 , G21C3/334 , G21C19/00
CPC分类号： G21C3/334 , G21Y2002/302 , G21Y2002/40 , G21Y2004/40 , G21Y2004/501 , Y02E30/40 , Y10T29/531
摘要： A fixture for removing a top nozzle of a reconstitutable fuel assembly held in a fixed position within a work station includes a pair of guide openings in two diagonally opposed corners of its base to movably mount the base on a pair of upstanding guide members of the work station and on the top nozzle in alignment therewith. Also, the fixture includes a pair of hollow expandable split sleeves with wedge pins inserted therein which are operable to lock the fixture to the top nozzle. An arrangement of drive and driven gears connected with a plurality of reaction pins mounted on the base of the fixture are operable to move the fixture base with the top nozzle thereto away from the guide thimbles of the fuel assembly and thereby cause the top nozzle adapter plate to release its connection with the guide thimbles. However, prior to removing the top nozzle, a plurality of stop devices of the fixture are preset and operable for establishing a reference representing the distance between the fixture and work station so that the top nozzle can later be replaced at the same axial position on the fuel assembly it was at before removal.
摘要翻译：用于移除固定在工作站内的固定位置的可重构燃料组件的顶部喷嘴的固定装置包括在其底座的两个对角相对的角部中的一对导向开口，用于可移动地将基座安装在工件的一对直立引导构件上站和顶部喷嘴对准。此外，固定装置还包括一对具有插入其中的楔形销的中空的可展开分割套管，其可操作以将固定装置锁定到顶部喷嘴。与安装在固定装置的底座上的多个反作用销连接的驱动和从动齿轮的布置可操作以将具有顶部喷嘴的固定基座移动到远离燃料组件的引导套筒并由此使顶部喷嘴适配器板释放与导向套管的连接。然而，在去除顶部喷嘴之前，固定装置的多个停止装置被预先设置并且可操作用于建立表示固定装置和工作站之间的距离的参考，使得顶部喷嘴稍后可以在相同的轴向位置在拆卸之前的燃料组件。

76. 发明授权

US4663112A Method for determining the contents of a fuel rod 失效
标题翻译：确定燃料棒内容物的方法
公开(公告)号：US4663112A
公开(公告)日：1987-05-05
申请号：US589513
申请日：1984-03-14
申请人： Gerhard Gradel , Peter Wahode , Wolfgang Dorr
发明人： Gerhard Gradel , Peter Wahode , Wolfgang Dorr
IPC分类号： G01N27/72 , G21C17/06 , G21C19/33 , G21C17/00
CPC分类号： G21C17/06 , G01N27/72
摘要： Method for determining the contents of a fuel rod within a testing range extending in the longitudinal direction of the fuel rod, characterized by the features that(a) the position of a test coil concentrically surrounding the fuel rod is changed from the beginning to the end of the testing range, and(b) in the process, the impedance of the test coil is measured as a function of its position,(c) the test coil is fed with an a-c voltage,(d) the frequency of which is so low that the measurement value in the region of a fuel pellet of pure uranium dioxide is clearly distinguished from that which is measured in the region of a doped fuel pellet.
摘要翻译：在燃料棒的纵向延伸的测试范围内确定燃料棒的内容物的方法，其特征在于，（a）同心地围绕燃料棒的测试线圈的位置从开始到结束（b）在该过程中，测试线圈的阻抗作为其位置的函数被测量，（c）测试线圈被馈送交流电压，（d）其频率是如此低纯度二氧化铀的燃料颗粒区域中的测量值与在掺杂燃料颗粒的区域中测量值的清楚区别。

77. 发明授权

US4659537A Apparatus for maintenance of nuclear fuel assemblies 失效
标题翻译：用于维护核燃料组件的装置
公开(公告)号：US4659537A
公开(公告)日：1987-04-21
申请号：US552559
申请日：1983-11-16
申请人： Daniel Beuneche , Pierre Amiet
发明人： Daniel Beuneche , Pierre Amiet
IPC分类号： G21C21/00 , G21C3/335 , G21C17/06 , G21C19/33 , G21C19/00
CPC分类号： G21C17/06 , G21C3/335 , G21Y2002/301 , G21Y2002/302 , G21Y2002/40 , G21Y2004/501 , Y02E30/40 , Y10T29/49815
摘要： The apparatus is for dismounting nuclear fuel assemblies comprising a skeleton having an upper end piece, a lower end piece, guide tubes connecting the end pieces and fuel rods maintained by grids between the end pieces. The apparatus comprises a cell displaceable vertically in a water tank and provided, at its upper part, with a base plate having an opening for passage of one said fuel assembly and provided with means for gripping an upper part of the bundle of fuel rods. A centering unit is operable by a handling tool and is arranged for gripping the upper end piece of a fuel assembly. The guide tubes may be disconnected from the upper end piece while the bundle of fuel rods is retained in the cell.
摘要翻译：该装置用于拆卸包含骨架的核燃料组件，所述骨架具有上端件，下端件，连接末端件的引导管和端部件之间由栅格保持的燃料棒。该装置包括在水箱中垂直移动的单元，并且在其上部设置有一个基板，该基板具有用于一个所述燃料组件通过的开口，并设置有用于夹紧燃料棒束的上部的装置。定心单元可由操作工具操作，并且设置成夹紧燃料组件的上端件。引导管可以与上端部件断开，而燃料棒束被保持在电池中。

78. 发明授权

US4646415A Device and method for unfastening and lifting a top nozzle subassembly from a reconstitutable fuel assembly 失效
公开(公告)号：US4646415A
公开(公告)日：1987-03-03
申请号：US720208
申请日：1985-04-04
申请人： John F. Wilson , Robert K. Gjertsen
发明人： John F. Wilson , Robert K. Gjertsen
IPC分类号： G21C19/33 , B23P19/00 , B25B9/00 , B25B27/14 , G21C3/33 , G21C3/334 , B23P17/00
CPC分类号： G21C3/334 , B23P19/00 , B25B27/143 , B25B9/00 , Y02E30/40 , Y10T29/49822 , Y10T29/531
摘要： A device for unfastening and lifting a top nozzle subassembly from the guide thimbles of a reconstitutable fuel assembly includes hollow gripper tubes having open lower ends, spaced yokes mounting the gripper tubes, pull rods disposed in the gripper tubes, end plugs attached to lower ends of the pull rods and disposed at the open lower ends of the gripper tubes, stop plugs stationarily disposed in the gripper tubes spaced above their open lower ends, elastomer blocks disposed in the gripper tubes between the end and stop plugs, and inner tubes disposed within the gripper tubes about the elastomer blocks. Lower end portions of the gripper tubes are capable of insertion into sleeves of the top nozzle subassembly to positions therein located adjacent to threaded lower ends of the sleeves. The pull rods are disposed within the gripper tubes for axial movement upwardly and downwardly within the tubes, with the end plugs being extendible into and from the gripper tube open lower ends upon such movement of the pull rods. In such arrangement, movement of each pull rod upwardly displaces the end plug thereon toward the stop plug and causes diametric expansion of the block which, in turn, causes diametric expansion of the gripper tube into engagement with the sleeve adjacent to the threaded lower end thereof, whereas movement of the pull rod downwardly displaces the end plug thereon away from the stop plug and allows diametric contraction of the block which, in turn, allows diametric contraction of the gripper tube out of engagement with the sleeve. Each gripper tube lower end portion contains spaced axial slots for facilitating diametric expansion of the gripper tube which enables subsequent unthreading of the sleeve from the guide thimble. Also, the inner tube about the elastomer block is axially slotted and oriented such that its slots are circumferentially displaced from those of the gripper tube so as to prevent the elastomer block from extruding outwardly through the slots of the gripper tube when the block is diametrically expanded.

79. 发明授权

US4627163A Tube cutter for cutting two concentric tubes bulged together 失效
标题翻译：用于切割两个同心管的管切割器一起膨胀
公开(公告)号：US4627163A
公开(公告)日：1986-12-09
申请号：US632978
申请日：1984-07-20
申请人： Gary W. Cuba , Edward N. Laughlin
发明人： Gary W. Cuba , Edward N. Laughlin
IPC分类号： B23D21/00 , B23D21/10 , B23D35/00 , G21C19/33 , B23D21/06
CPC分类号： B23D21/10
摘要： An improved tube cutter is provided for cutting off a tube section formed by two concentric tubes mechanically bulged together wherein the cut to be made is adjacent the bulged area. The tube cutter includes an elongated housing formed by two matable portions having longitudinal matching recesses which define an axial bore through the housing and transverse matching recesses which define a circumferential groove that accommodates the bulged area when the housing portions are clamped together about the tube section. Each of the housing portions carry a cutter bit which is located adjacent the groove and is extendable into the axial bore as the tube cutter manually rotated about the tube section so as to make a cut through the tube section adjacent the bulged area.
摘要翻译：提供了一种改进的管切割器，用于切断由两个同心管形成的管部分，该管状部分机械地隆起在一起，其中待制成的切口邻近凸出区域。管切割器包括由两个可配合部分形成的细长壳体，所述两个可配合部分具有纵向匹配的凹槽，该凹槽限定穿过壳体的轴向孔和横向匹配凹槽，当凹部围绕管部分被夹持在一起时，该凹槽限定了容纳凸出区域的周向凹槽。每个壳体部分带有一个位于槽附近的切割刀头，并且当管切割器围绕管部分手动旋转时可延伸到轴向孔中，以便通过邻近凸起区域的管部分进行切割。

80. 发明授权

US4603027A Removable top nozzle and tool for a nuclear reactor fuel assembly 失效
公开(公告)号：US4603027A
公开(公告)日：1986-07-29
申请号：US564058
申请日：1983-12-21
申请人： John F. Wilson , Samuel Cerni , Robert K. Gjertsen
发明人： John F. Wilson , Samuel Cerni , Robert K. Gjertsen
IPC分类号： G21C3/33 , G21C3/334 , G21C3/335 , G21C19/33 , G21C3/32
CPC分类号： G21C3/3315 , G21C3/331 , G21C3/334 , G21C3/33 , G21C3/335 , G21Y2002/302 , G21Y2002/401 , G21Y2004/30 , G21Y2004/40 , G21Y2004/501 , Y02E30/40 , Y10T403/3986
摘要： A top nozzle subassembly having a hold-down device incorporated therewithin is provided for a nuclear reactor fuel assembly. The subassembly is slidably mounted on the upper ends of the control rod guide thimbles and is removably attached by internally threaded collars which threadably mate with external threads provided on the upper ends of the guide thimbles. Unthreading of the collars allows the subassembly to be removed from the fuel assembly to gain top access to the fuel rods within the fuel assembly. The invention also includes a special tool for threading and unthreading of the collars.

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