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1. 发明授权

US5465497A Control rod drive uncoupling tool gage 失效
标题翻译：控制杆驱动解耦工具量具
公开(公告)号：US5465497A
公开(公告)日：1995-11-14
申请号：US199408
申请日：1994-02-22
申请人： Balasubramanian S. Kowdley , Thomas A. Lewis , Robert S. Tsukida , Edward W. Saxon , Frank Ortega , Paul Debenedetto
发明人： Balasubramanian S. Kowdley , Thomas A. Lewis , Robert S. Tsukida , Edward W. Saxon , Frank Ortega , Paul Debenedetto
IPC分类号： G21C19/20 , G21C17/12 , G01B7/14 , G21C17/00
CPC分类号： G21C17/12 , G21Y2002/207 , G21Y2002/40 , G21Y2004/501
摘要： A method and a gage for testing uncoupling tools to ensure proper operation prior to use. The uncoupling tool gage simulates the actual conditions under which the uncoupling tool is expected to perform. The gage has a cylindrical guide for slidably receiving a magnet housing. The guide is supported such that it is concentric with respect to the probe of an uncoupling tool to be checked. The magnet housing is placed inside the cylindrical guide and then moved toward the bottom thereof. When the magnet moves into proximity with a switch in the uncoupling tool probe, an indicator lamp in the uncoupling tool illuminates. If the face of the magnet housing is within a range band on the outside of the guide when the indicator is illuminated, then the uncoupling tool is operating properly.
摘要翻译：用于测试分离工具的方法和量具，以确保在使用前正确操作。解耦工具计数器模拟解耦工具预期执行的实际条件。量具具有用于可滑动地接收磁体壳体的圆柱形引导件。引导件被支撑成使得其相对于要检查的解耦工具的探头是同心的。磁体外壳放置在圆柱形引导件内，然后向其底部移动。当磁头移动到非耦合工具探针中的开关附近时，解耦工具中的指示灯亮起。如果当指示灯点亮时，磁体外壳的表面在引导件外侧的范围内，则解耦工具正常工作。

2. 发明授权

US5524030A Multistage control rod drive uncoupling tool 失效
标题翻译：多级控制杆驱动解耦工具
公开(公告)号：US5524030A
公开(公告)日：1996-06-04
申请号：US199405
申请日：1994-02-22
申请人： Thomas W. White , Balasubramanian S. Kowdley , Thomas A. Lewis , Christopher J. Miller , Robert S. Tsukida , Andrew S. Wong , Thomas R. Eckmann , Edward W. Saxon , Frank Ortega
发明人： Thomas W. White , Balasubramanian S. Kowdley , Thomas A. Lewis , Christopher J. Miller , Robert S. Tsukida , Andrew S. Wong , Thomas R. Eckmann , Edward W. Saxon , Frank Ortega
IPC分类号： G21C7/16 , G21C19/20 , G21C19/00
CPC分类号： G21C7/16 , G21Y2002/40 , G21Y2002/50 , Y02E30/39
摘要： An uncoupling tool has a two-module design: one module being a driver assembly for developing the uncoupling movement and the other module being a probe assembly for verifying the uncoupled condition. The probe assembly attaches to the threaded end of the piston tube with its probe extending inside the piston tube. The driver assembly attaches to the CRD ring flange. The probe assembly detects the ring magnet in the drive piston using analog position sensors which operate on the principle of the Hall effect and solid state circuitry. A top sensor provides a signal indicating that the control rod is in its "full out" position; a bottom sensor provides a signal indicating that the control rod is uncoupled; and an intermediate sensor provides a signal indicating that the control rod is in a transition position between the "full out" and uncoupled positions. The probe incorporates spacers which focus the magnetic flux onto the sensors. To uncouple the control rod, the probe assembly is lifted using a separate driver assembly.
摘要翻译：解耦工具具有双模块设计：一个模块是用于开发非耦合运动的驱动器组件，而另一模块是用于验证非耦合状态的探针组件。探针组件连接到活塞管的螺纹端，其探针在活塞管内延伸。驱动器组件连接到CRD环形法兰。探头组件使用以霍尔效应和固态电路为原理的模拟位置传感器来检测驱动活塞中的环形磁体。顶部传感器提供指示控制杆处于其“完全”位置的信号; 底部传感器提供指示控制杆脱离的信号; 并且中间传感器提供指示控制杆处于“完全”和非耦合位置之间的过渡位置的信号。探头包含将磁通量聚焦到传感器上的间隔物。为了使控制杆脱开，探针组件使用单独的驱动器组件提升。

3. 发明授权

US5377239A BWR control rod handling tooling & method 失效
标题翻译： BWR控制杆处理工具及方法
公开(公告)号：US5377239A
公开(公告)日：1994-12-27
申请号：US108463
申请日：1993-08-18
申请人： Fred C. Nopwaskey , Robert W. Whitling , Balasubramanian S. Kowdley , Frank Ortega
发明人： Fred C. Nopwaskey , Robert W. Whitling , Balasubramanian S. Kowdley , Frank Ortega
IPC分类号： G21C19/19 , G21C19/06 , G21C19/10
CPC分类号： G21C19/10 , G21C19/06 , G21C19/207 , G21Y2002/302 , G21Y2002/40 , G21Y2002/501 , G21Y2004/40 , G21Y2004/50 , G21Y2004/501
摘要： A tool set and a method of using those tools in combination is disclosed that are especially well adapted to the function of rearranging and/or replacing the control rods and fuel supports in a boiling water reactor. The tool set includes a grapple that is capable of simultaneously picking up both a control rod and its associated fuel support. A separate unlatching tool is provided for pulling the control rod's release handle in order to decouple the control rod from a control rod drive. A storage rack that may be mounted in the reactor pressure vessel is provided for storing a fuel support and a pair of control rods when the positions of selected control rods are being shifted about the reactor core area. In the method aspect of the invention, the unlatching tool is used to pull the control rod's release handle. Thereafter, the grapple lifts the control rod and its associated fuel support as a unit. When rearranging the positions of the control rods, a first control rod and its associated fuel support are placed the storage rack. Then a second control rod/fuel support assembly is removed in a similar manner and the second control rod is placed in the storage rack. Thereafter, the first control rod may be removed from the storage rack and placed in the position formally occupied by the second control rod, with the same fuel support that was removed from the second location.
摘要翻译：公开了一种工具组和组合使用这些工具的方法，其特别适用于在沸水反应器中重新布置和/或更换控制棒和燃料支架的功能。该工具组包括能够同时拾起控制杆及其相关联的燃料支架的抓斗。提供单独的解锁工具来拉动控制杆的释放手柄，以便将控制杆与控制杆驱动器分离。可以安装在反应堆压力容器中的存储架设置成用于在所选择的控制棒的位置围绕反应堆堆芯区域移动时存储燃料支架和一对控制杆。在本发明的方法方面，解锁工具用于拉动控制杆的释放手柄。此后，抓斗将控制棒及其相关联的燃料支架提升为一个单元。当重新布置控制杆的位置时，将第一控制杆及其相关的燃料支架放置在存放架上。然后以类似的方式移除第二控制棒/燃料支撑组件，并且将第二控制杆放置在存储架中。此后，第一控制杆可以从存储架移除并且被放置在由第二控制杆正式占据的位置中，具有从第二位置移除的相同的燃料支撑。

4. 发明授权

US5009105A Apparatus for ultrasonic examination of BWR shroud access cover plate retaining welds 失效
标题翻译：用于超声波检查BWR护罩检修盖板保持焊缝的设备
公开(公告)号：US5009105A
公开(公告)日：1991-04-23
申请号：US476086
申请日：1990-02-07
申请人： David L. Richardson , Jack P. Clark , Balasubramanian S. Kowdley , Peter M. Patterson , Richard W. Perry , Thurman D. Smith
发明人： David L. Richardson , Jack P. Clark , Balasubramanian S. Kowdley , Peter M. Patterson , Richard W. Perry , Thurman D. Smith
IPC分类号： G21C17/01
CPC分类号： G21C17/01
摘要： An apparatus and process for the remote inspection for stress corrosion cracking of welded shut boiling water reactor shroud access cover plates is disclosed. The apparatus consists of a streamline housing having a top side with lugs for the attachment of lowering lines on either end of the housing. Medially of the streamline housing and projecting downwardly from the bottom of the streamline housing, there is provided a central rotating pedestal with a rubber base. The rotating pedestal and rubber base enable the entire housing to rest on and rotate relative to the pedestal and rubber base. A first motor interior of the housing rotates the housing at a bevel gear rigidly mounted to the central pedestal. A second motor rotates a threaded shaft driving a ball screw with an attached mount for an ultrasound transducer. The mount and transducer responsive to rotation of the ball screw traverse along the elongate dimension of the housing over an opening through the bottom of the housing. A focused ultrasound transducer passes above the metal to be inspected. This ultrasound transducer focuses the sound through the water at an oblique angle to and from the metal of the hatch cover plate for an ultrasonic examination for stress corrosion cracking.
摘要翻译：公开了一种用于远程检查焊接闭合沸水反应堆护罩通道盖板的应力腐蚀开裂的装置和方法。该装置由流线型壳体组成，其具有顶侧，其具有用于在壳体的任一端上附接下降线的凸耳。在流线壳体的中部并且从流线壳体的底部向下突出，设置有具有橡胶基座的中心旋转基座。旋转底座和橡胶底座可使整个外壳相对于底座和橡胶底座静止并旋转。壳体的第一马达内部使壳体以刚性地安装到中心基座的锥齿轮旋转。第二电动机使用驱动滚珠丝杠的螺纹轴旋转用于超声换能器的附接安装座。响应于滚珠丝杠旋转的安装件和换能器沿着壳体的细长尺寸穿过穿过壳体底部的开口。聚焦超声波换能器通过要检查的金属上方。该超声波传感器将声音以与倾斜角度倾斜的角度对准来自舱口盖板的金属的超声波检查用于应力腐蚀开裂。

5. 发明授权

US5778545A Magnetically damped azimuth resolver 失效
标题翻译：磁阻方位角解算器
公开(公告)号：US5778545A
公开(公告)日：1998-07-14
申请号：US643817
申请日：1996-05-06
申请人： Michael G. Smith , James Howard Terhune , Roy C. May , George A. Romano , Balasubramanian S. Kowdley
发明人： Michael G. Smith , James Howard Terhune , Roy C. May , George A. Romano , Balasubramanian S. Kowdley
IPC分类号： G01B7/30 , G01C9/12
CPC分类号： G01C9/12 , G01B7/30
摘要： A means for damping a low-friction azimuth resolver by use of an array of small magnets acting on a metallic pendulum attached to the resolver shaft. The magnetic field acts on the pendulum motion to induce a motional electromotive force and associated currents, which produce forces opposed to the motion, thereby acting as a non-contact damper on the resolver shaft. When the resolver shaft is at rest, no "eddy currents" are produced in the static magnetic field and no damping force exists. If the shaft moves, the attached pendulum cuts the magnetic flux lines and produces a drag force proportional to the shaft angular speed. The pendulum is typically made of diamagnetic material, such as lead or copper, thereby assuring that the induced forces arise solely from the motion. The magnetic field is produced by an array of small, but intense, samarium-cobalt magnets contained in a compact package providing for uniform damping throughout 360.degree. of resolver motion. The device is designed and constructed as a modification to standard resolvers and allows for application where tight clearances have previously been a constraint.
摘要翻译：用于通过使用作用在连接到旋转变压器轴的金属摆的小磁体阵列来阻尼低摩擦方位分解器的装置。磁场作用于钟摆运动以引起运动电动势和相关联的电流，其产生与运动相反的力，从而用作解析器轴上的非接触阻尼器。当解析器轴处于静止状态时，在静磁场中不会产生“涡流”，并且不存在阻尼力。如果轴移动，附接的摆锤切断磁通线并产生与轴角速度成正比的阻力。摆锤通常由抗磁性材料制成，例如铅或铜，从而确保诱发力仅源于运动。该磁场是由包含在紧凑型封装中的小而强烈的钐钴磁体的阵列产生的，提供360°旋转变压器运动的均匀阻尼。该设备被设计和构造为标准解析器的修改，并允许紧急间隙以前是约束的应用。

6. 发明授权

US4966746A Ultrasonic examination of BWR shroud access cover plate retaining welds 失效
标题翻译：超声波检查BWR护罩检修盖板保持焊缝
公开(公告)号：US4966746A
公开(公告)日：1990-10-30
申请号：US293158
申请日：1989-01-03
申请人： David L. Richardson , Jack P. Clark , Balasubramanian S. Kowdley , Peter M. Patterson , Richard W. Perry , Thurman D. Smith
发明人： David L. Richardson , Jack P. Clark , Balasubramanian S. Kowdley , Peter M. Patterson , Richard W. Perry , Thurman D. Smith
IPC分类号： G01N29/04 , G21C17/003 , G21C17/01
CPC分类号： G21C17/01 , G01N2291/0258 , G01N2291/044
摘要： In operation, the device is lowered with paired lines attached to both housing lugs but suspended under tension only from one line to one lug so that the streamline housing is vertically disposed. With the housing vertically disposed during lowering, obstacles can be avoided such as the guide rod for the steam separator and dryer as well as the feedwater and core spray spargers. When lowered to the vicinity of the ledge and cover plate to be inspected, the slack line is fished around any obstacle and thereafter placed under tension. The streamline housing is then lowered using both lines in a horizontal position so as to expose downwardly the pedestal and rubber foot. Lowering is completed with remote camera assistance. Sample sweeps with the ultrasound transducer of spaced apart sections of the cover plate weld are used for precise centering of the pedestal and rubber base with respect to the center of the cover plate. Repeatedly logging a longitudinal excursion of the ultrasound detector with indexed rotation of the housing permits scanning entirely around the weld of the cover plate. This enables remote ultrasound survey of the weld of the cover plate for stress corrosion cracking.
摘要翻译：在操作中，装置被降下，成对的线连接到两个壳体凸耳，但是在张力下仅由一根线悬挂到一个凸耳，使得流线壳体垂直设置。随着壳体在降低期间垂直设置，可以避免障碍物，例如用于蒸汽分离器和干燥器的导杆以及给水和核心喷雾器。当下降到要检查的凸缘和盖板附近时，松弛线在任何障碍物周围被捕获，然后放置在张力下。然后使用两条线在水平位置下降流线壳体，以向下暴露基座和橡胶脚。通过远程摄像头协助完成降级。使用覆盖板焊缝的间隔开的部分的超声波换能器进行样品扫描，用于相对于盖板的中心精确地对准基座和橡胶基座。重复记录具有壳体的分度旋转的超声检测器的纵向偏移允许完全围绕盖板的焊缝进行扫描。这允许对盖板的焊缝进行远程超声波测量以用于应力腐蚀开裂。

7. 发明授权

US5460045A Ultrasonic probes for inspection of reactor pressure vessel bottom head and weld buildup thereon 失效
标题翻译：用于检查反应堆压力容器底部头部的超声波探头和其上的焊接积聚
公开(公告)号：US5460045A
公开(公告)日：1995-10-24
申请号：US105193
申请日：1993-08-09
申请人： Jack P. Clark , Balasubramanian S. Kowdley , James C. S. Tung , David C. Berg
发明人： Jack P. Clark , Balasubramanian S. Kowdley , James C. S. Tung , David C. Berg
IPC分类号： G21C13/00 , G21C13/036 , G21C17/003 , G21C17/10 , G21C19/02 , G01N29/10 , G01N29/26
CPC分类号： G21C19/02 , G21C13/036 , G21C17/10 , G21C19/207 , G01N2291/044 , Y02E30/40
摘要： An improved method for repair of incore-instrumentation-housing and related defects in a nuclear reactor system involves three stages, each with ultrasonically assisted inspections. In the first stage, a defective incore housing is removed and the exposed area and aperture at the former location of the incore housing is ultrasonically inspected using an ultrasonic probe with a tiltable disk-shaped head that self-conforms to the local contour of the reactor vessel bottom. In the second stage, a weld buildup is formed. The reactor is then sealed and the weld buildup is machined to define an aperture therethrough. The weld buildup is then ultrasonically inspected with a second probe with a centering member that is stationary as the probe body is moved vertically relative to it. In the third stage, a J-prep is formed. A new incore housing is inserted through the weld buildup aperture. The new incore housing is welded at the J-prep. The J-weld is ultrasonically inspected using a third ultrasonic probe. The new incore housing is then connected to the incore guide tube with shrink couplings, and reactor activity can be restored.
摘要翻译：核反应堆系统中修复器械住房和相关缺陷的改进方法涉及三个阶段，每个阶段都采用超声波辅助检查。在第一阶段，去除缺陷的外壳，并且使用超声波探头超声波检查腋窝前部位置的暴露面积和孔径，该超声波探头具有与反应器的局部轮廓相符的可倾斜盘形头部船底。在第二阶段，形成焊缝积聚。然后将反应器密封，并且加工焊接积聚物以限定穿过其中的孔。然后用具有定心构件的第二探针超声波检查焊缝积聚，当定位体相对于探针主体垂直移动时，定心构件是静止的。在第三阶段，形成了J-prep。通过焊缝积聚孔插入新的腋窝。新的寝室用J-prep焊接。使用第三超声波探头超声波检查J焊缝。然后将新的腋窝与收缩接头连接到吹管导管，并可以恢复反应器的活动。

8. 发明授权

US5145637A Incore housing examination system 失效
标题翻译：入住考试制度
公开(公告)号：US5145637A
公开(公告)日：1992-09-08
申请号：US747404
申请日：1991-08-19
申请人： David L. Richardson , David C. Berg , Balasubramanian S. Kowdley , Jack T. Matsumoto , Thurman D. Smith , Jack P. Clark
发明人： David L. Richardson , David C. Berg , Balasubramanian S. Kowdley , Jack T. Matsumoto , Thurman D. Smith , Jack P. Clark
IPC分类号： G01N27/90 , G01N29/04 , G01N29/22 , G01N29/265
CPC分类号： G01N29/223 , G01N27/902 , G01N29/043 , G01N29/265 , G01N2291/0421 , G01N2291/0422 , G01N2291/267
摘要： An automated system for examining incore housing welds in a nuclear reactor from above is disclosed. The probe uses both ultrasonic and eddy current non-destructive inspection coils to examine the weld for indications, or flaws. It is inserted into the incore housing tube from above because of the high radiation exposure workers experienced using the prior method of inserting a probe into the incore housing from below. This is conveniently done when the incore flux monitors are removed during standard maintenance, and is performed from the refueling bridge.
摘要翻译：公开了一种用于从上面检查核反应堆中的外壳焊缝的自动化系统。探头使用超声波和涡流非破坏性检查线圈来检查焊缝的迹象或缺陷。由于高辐射暴露工作人员使用现有技术从下方将探头插入腋窝外壳的方法，因此从上方将其插入腋窝管。当在标准维护期间移除穿透通量监测器并且从加油桥执行时，这是方便的。

9. 发明授权

US5473645A Fuel support and control rod storage rack 失效
标题翻译：燃油支架和控制杆存放架
公开(公告)号：US5473645A
公开(公告)日：1995-12-05
申请号：US064384
申请日：1993-05-21
申请人： Balasubramanian S. Kowdley
发明人： Balasubramanian S. Kowdley
IPC分类号： G21C19/19 , G21C19/06 , G21C19/10 , G21C19/20
CPC分类号： G21C19/10 , G21C19/06 , G21C19/207 , G21Y2002/302 , G21Y2002/40 , G21Y2002/501 , G21Y2004/40 , G21Y2004/50 , G21Y2004/501
摘要： A tool set and a method of using those tools in combination is disclosed that are especially well adapted to the function of rearranging and/or replacing the control rods and fuel supports in a boiling water reactor. The tool set includes a grapple that is capable of simultaneously picking up both a control rod and its associated fuel support. A separate unlatching tool is provided for pulling the control rod's release handle in order to decouple the control rod from a control rod drive. A storage rack that may be mounted in the reactor pressure vessel is provided for storing a fuel support and a pair of control rods when the positions of selected control rods are being shifted about the reactor core area. In the method aspect of the invention, the unlatching tool is used to pull the control rod's release handle. Thereafter, the grapple lifts the control rod and its associated fuel support as a unit. When rearranging the positions of the control rods, a first control rod and its associated fuel support are placed in the storage rack. Then a second control rod/fuel support assembly is removed in a similar manner and the second control rod is placed in the storage rack. Thereafter, the first control rod may be removed from the storage rack and placed in the position formally occupied by the second control rod, with the same fuel support that was removed from the second location.
摘要翻译：公开了一种工具组和组合使用这些工具的方法，其特别适用于在沸水反应器中重新布置和/或更换控制棒和燃料支架的功能。该工具组包括能够同时拾起控制杆及其相关联的燃料支架的抓斗。提供单独的解锁工具来拉动控制杆的释放手柄，以便将控制杆与控制杆驱动器分离。可以安装在反应堆压力容器中的存储架设置成用于在所选择的控制棒的位置围绕反应堆堆芯区域移动时存储燃料支架和一对控制杆。在本发明的方法方面，解锁工具用于拉动控制杆的释放手柄。此后，抓斗将控制棒及其相关联的燃料支架提升为一个单元。当重新布置控制杆的位置时，将第一控制杆及其相关联的燃料支撑件放置在存储架中。然后以类似的方式移除第二控制棒/燃料支撑组件，并且将第二控制杆放置在存储架中。此后，第一控制杆可以从存储架移除并且被放置在由第二控制杆正式占据的位置中，具有从第二位置移除的相同的燃料支撑。

10. 发明授权

US5272734A Repair of incore housings using ultrasonic examinations 失效
标题翻译：使用超声波检查修复腋窝
公开(公告)号：US5272734A
公开(公告)日：1993-12-21
申请号：US865507
申请日：1992-04-09
申请人： Jack P. Clark , Balasubramanian S. Kowdley , James C. S. Tung , David C. Berg
发明人： Jack P. Clark , Balasubramanian S. Kowdley , James C. S. Tung , David C. Berg
IPC分类号： G21C13/00 , G21C13/036 , G21C17/003 , G21C17/10 , G21C19/02 , G21C19/00
CPC分类号： G21C19/02 , G21C13/036 , G21C17/10 , G21C19/207 , G01N2291/044 , Y02E30/40
摘要： An improved method for repair of incore-instrumentation-housing and related defects in a nuclear reactor system involves three stages, each with ultrasonically assisted inspections. In the first stage, a defective incore housing is removed and the exposed area and aperture at the former location of the incore housing is ultrasonically inspected using an ultrasonic probe with a tiltable disk-shaped head that self-conforms to the local contour of the reactor vessel bottom. In the second stage, a weld buildup is formed. The reactor is then sealed and the weld buildup is machined to define an aperture therethrough. The weld buildup is then ultrasonically inspected with a second probe with a centering member that is stationary as the probe body is moved vertically relative to it. In the third stage, a J-prep is formed. A new incore housing is inserted through the weld buildup aperture. The new incore housing is welded at the J-prep. The J-weld is ultrasonically inspected using a third ultrasonic probe. The new incore housing is then connected to the incore guide tube with shrink couplings, and reactor activity can be restored.

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