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1. 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。

2. 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。

3. 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。

4. 发明授权

US4818470A Apparatus for the ultrasonic examination of shroud hold down bolts 失效
标题翻译：用于超声波检查护罩的装置压紧螺栓
公开(公告)号：US4818470A
公开(公告)日：1989-04-04
申请号：US91174
申请日：1987-08-31
申请人： David L. Richardson , Jack P. Clark , Thurman D. Smith , Richard W. Perry
发明人： David L. Richardson , Jack P. Clark , Thurman D. Smith , Richard W. Perry
IPC分类号： G21C17/003 , G01N29/04 , G01N29/265 , G21C17/00
CPC分类号： G01N29/265 , G01N2291/0258 , G01N2291/0421 , G01N2291/0422 , G01N2291/044 , G01N2291/2695
摘要： An apparatus for the remote examination of peripheral shroud hold down bolts on steam separators used in boiling water reactors is disclosed. The testing apparatus is used while the steam separator is in a holding pool. The testing apparatus includes a depending pole having attached at the bottom thereof an aluminum shoe. The shoe has a flat, upwardly exposed bottom and opens to one side at gathering surfaces to receive the lower ends of the shroud bolts. The upwardly exposed bottom of the shoe defines an aperture through which an upwardly exposed piezoelectric device is exposed for direct contact with the bottom of the bolt. An overlying clamp member is provided to clamp the lug onto the bottom of the shoe for testing. The clamp member defines a receiving slot to receive the shaft of the bolt immediately overlying the rectangular lug. The clamp member slides over the shaft at the slot into contact with the top of the lug. The clamp member clamps the lug end of the bolt securely onto the upwardly exposed piezoelectric device on the upwardly exposed bottom of the shoe. A piezoelectric ultrasonic test is then run from the bottom and radioactive portion of the bolt to and towards the top of the bolt. Testing for longitudinal sound waves, refracted sound waves and shear sound waves for inter granular stress corrosion cracking can occur despite the radioactive and remote under water location of the bolts.
摘要翻译：公开了一种用于远程检查在沸水反应器中使用的蒸汽分离器上的外围护罩的紧固螺栓的装置。当蒸汽分离器处于保持池中时，使用测试装置。该测试装置包括一个固定极，其底部附着有一个铝制鞋。鞋具有平坦的向上暴露的底部，并且在聚集表面处一侧开口以接收护罩螺栓的下端。鞋的向上暴露的底部限定了一个孔，露出的向上露出的压电装置通过该孔与螺栓的底部直接接触。提供了一个上覆的夹紧构件以将凸耳夹紧到鞋的底部以进行测试。夹紧构件限定接收槽，以容纳立即覆盖矩形凸耳的螺栓的轴。夹紧构件在槽处在轴上滑动以与凸耳的顶部接触。夹紧构件将螺栓的凸耳端部牢固地夹紧在鞋的向上暴露的底部上的向上暴露的压电装置上。然后，压电超声波测试从螺栓的底部和放射性部分延伸到螺栓的顶部并朝向螺栓的顶部。尽管放射性和远程位于水下位置的螺栓，测试纵向声波，折射声波和晶粒间应力腐蚀开裂的剪切声波。

5. 发明授权

US5426980A Booted ultrasonic transducer 失效
标题翻译：引导超声波换能器
公开(公告)号：US5426980A
公开(公告)日：1995-06-27
申请号：US92860
申请日：1993-07-19
申请人： Thurman D. Smith
发明人： Thurman D. Smith
IPC分类号： G01N29/24 , G01N29/28 , H04R17/00
CPC分类号： G01N29/28 , G01N29/069 , G01N2291/0234 , G01N2291/0421 , G01N2291/0422 , G01N2291/2695
摘要： A soft membrane booted transducer for performing ultrasonic inspections of parts and components that have rough sound beam entry surfaces. These rough surfaces may be in the form of as-welded unprepared overlays, cladded components, as-cast parts, or other unprepared surfaces that tend to prohibit, or prevent, sound entry from normal, smooth, hard-surfaced transducer contacting shoes made from Lucite or similar materials. The booted ultrasonic transducer has a soft membrane boot for coupling the transducer to an uneven or rough sound beam entry surface. The soft membrane is made of a flexible material capable of transmitting ultrasonic waves. When pressed into contact with the uneven or rough surface of the object being inspected, the membrane flexes to generally conform to the shape of the contacted surface. Flexing of the membrane eliminates or reduces air gaps between the transducer and the object surface, thereby increasing the ultrasonic coupling between the piezoelectric element and the object.
摘要翻译：用于对具有粗糙的声束入射表面的部件进行超声波检测的软膜引导传感器。这些粗糙的表面可以是焊接的无准备的覆盖层，包覆部件，铸造部件或其他未准备的表面的形式，其倾向于禁止或阻止声音从正常的，光滑的，硬表面的换能器接触， Lucite或类似材料。引导超声波换能器具有软膜启动器，用于将换能器耦合到不均匀或粗糙的声束入射表面。软膜由能够传输超声波的柔性材料制成。当与被检查物体的不平坦或粗糙的表面压接时，膜弯曲成大致符合接触表面的形状。膜的弯曲消除或减少换能器和物体表面之间的空气间隙，从而增加了压电元件和物体之间的超声耦合。

6. 发明授权

US5078954A Method and apparatus for carrying out the in situ inspection of the shafts of pumps 失效
标题翻译：用于实施泵浦冲程检测的方法和装置
公开(公告)号：US5078954A
公开(公告)日：1992-01-07
申请号：US511119
申请日：1990-04-17
申请人： Thurman D. Smith , James C. S. Tung , James H. Oates
发明人： Thurman D. Smith , James C. S. Tung , James H. Oates
IPC分类号： G01N29/04 , G01N29/24 , G01N29/265 , G21C17/003
CPC分类号： G01N29/265 , G01N2291/044 , G01N2291/2696
摘要： Method and apparatus for carrying out the in situ inspection of the shaft of a pump. A spacer coupling or link is manually removed from a limited access area intermediate the pump drive and top of the pump shaft. Inspection then is carried out through a previously formed inspection bore extending concentrically along the interior of the shaft. A probe supported by an extension assembly is lowered into the inspection bore until characterizable portions of the shaft such as a labyrinth seal region are identified. A discrete small region of interest which will initially evidence any fault condition then is surveyed with a raster scan movement of the inspection probe. Lower components of the region of interest are also identified by a next adjacent characterizable region such as a fillet welding for a journal assembly. Because of the limited longitudinal extent of the region of interest, the raster type movement of the probe becomes available. A calibration mock-up of the shaft is employed to provide ultrasonic signal readout information to apprise the operator of the presence of characterizable regions and the effectiveness of inspection transducer operation.

7. 发明授权

US5267481A Ultra sound probe for cylindrical body having reduced vertical clearance 失效
标题翻译：圆柱体的超声探头具有减小的垂直间隙
公开(公告)号：US5267481A
公开(公告)日：1993-12-07
申请号：US782228
申请日：1991-10-24
申请人： Thurman D. Smith
发明人： Thurman D. Smith
IPC分类号： G01N29/04 , G01N29/22 , G01N29/24 , G01N29/265 , G01N29/10 , G01N29/26
CPC分类号： G01N29/2487 , G01N29/221 , G01N29/265 , G01N2291/044 , G01N2291/2695
摘要： An especially designed probe carries preferably five transducers for the examination of a right circular cylinder flooded with water having limited vertical clearance from the point of required non destructive inspection. The probe includes a generally disc shaped body having a minimal vertical dimension and a radius slightly less than the radius of the right circular cylinder to be inspected. Insertion of the probe interior of the right circular cylinder occurs. At the periphery of the disc, there are disposed five interrogating acoustical transducers. These transducers are spaced from preselected staggered circumferential locations with respect to the right circular cylinder for examination of the water flooded cylinder with refracted rays. The respective transducers are disposed with disclosed angularities and spatial orientation from their point of intended inspection to satisfy Snell's law with respect to the diameter of the right circular cylinder being examined to enable all points on any given radius of the right circular cylinder to be acoustically interrogated. A process of interrogation is disclosed which includes mounting the disc on a rotatable shaft, elevating the disc on the shaft to an elevation having the point of required interrogation intersecting the disc. Upon rotation of the disc, each of the interrogating transducers rotates sequentially to the point of required acoustical interrogation for the desired non destructive acoustical interrogation of the right circular cylinder.

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