公开(公告)号：US20180261345A1

公开(公告)日：2018-09-13

申请号：US15903111

申请日：2018-02-23

申请人： WESTINGHOUSE ELECTRIC COMPANY LLC

发明人： BRYAN R. OEHLING ,  JAMES T. POLIDORA

IPC分类号： G21C17/07 ,  G01M3/24 ,  G01M3/32

CPC分类号： G21C17/07 ,  G01M3/24 ,  G01M3/243 ,  G01M3/3209 ,  G21C5/02 ,  G21C19/02 ,  G21C19/207

摘要： The single rod ultrasonic leak detection tool will be used to detect leaking fuel rods by evaluation if there is water inside the rod. The test will be performed by moving one fuel rod between two ultrasonic transducer oriented in a pitch/catch configuration. The detection tool uses ultrasonic transducers as the primary method to detect leaking fuel rods. Two probes are preferably positioned near the fuel rod in a pitch/catch or transmitting/receiving configuration. One probe 36 sends the signal into the rod and the other probe of a set of probes receives the signal. An evaluation of the received signal is performed in various embodiments, to determine leak tightness of the fuel rod. In various aspects, two sets of probes may be utilized so that measurements can be taken on both sides of the fuel rod.

公开(公告)号：US5539789A

公开(公告)日：1996-07-23

申请号：US388477

申请日：1995-02-14

申请人： William J. Wachter

发明人： William J. Wachter

IPC分类号： G21C17/07 ,  G21C19/10 ,  G21C17/06

CPC分类号： G21C17/07 ,  G21Y2002/202 ,  G21Y2004/30 ,  G21Y2004/40

摘要： An accelerometer is mounted onto the releasable fuel gripper structure of a refueling machine to form a mechanical interconnection between an accelerometer and a nuclear fuel assembly during removal from a core of a nuclear reactor. An electrical signal is received and processed through an analyzer and recorded corresponding to mechanical vibrations occurring due to the passage of a fluid medium through a porous sidewall defect in a fuel rod of the fuel assembly which is induced by a hydrostatic pressure change on the fuel assembly during upward movement from the reactor core.

摘要翻译： 加速度计安装在加油机的可释放燃料夹持器结构上，以在从核反应堆的核心移除期间在加速度计和核燃料组件之间形成机械互连。 电信号通过分析仪被接收和处理，并对应于由于流体介质通过燃料组件的燃料棒中的多孔侧壁缺陷而发生的机械振动而记录，燃料组件的燃料棒由燃料组件上的静水压力变化 在从反应堆堆芯向上移动时。

公开(公告)号：US5517851A

公开(公告)日：1996-05-21

申请号：US366216

申请日：1994-12-29

申请人： John W. Berthold ,  Thomas O. Passell ,  Garry W. Roman

发明人： John W. Berthold ,  Thomas O. Passell ,  Garry W. Roman

IPC分类号： G01N17/00 ,  G21C3/07 ,  G21C17/07 ,  G08B21/00

CPC分类号： G21C3/07 ,  G01N17/00 ,  G21C17/07 ,  G21Y2002/103 ,  G21Y2004/50 ,  Y02E30/40

摘要： An autoclave-enclosed sidestream model boiler is used to predict the onset of intergranular attack ("IGA") and stress corrosion cracking ("SCC") within tubing associated with a power generator. Power generator final feed water is fluid coupled to a pipe within the model boiler, which pipe is strain-gage monitored, preferably using welded fiber optic strain gage devices. The monitored pipe includes a crevice region that produces a water-starved region in which chemical impurities in the feed water become concentrated. A cylindrical heater, located within a portion of the monitored pipe, promotes the water-starved region. A cylindrical portion of the pipe wall preferably is thinned, generally in the region bounding the crevice. Thinning promotes the onset of IGA/SCC within the monitored pipe and also passively amplifies the effects of IGA/SCC to promote easier strain detection. To further promote stress, the monitored pipe is subjected to loading and unloading from an axial load. Drift in the strain gage measurement can be substantially eliminated by taking measurements under axial load and no load conditions, as these two conditions may be attained within a short time of each other, e.g., a few minutes. Long term monitoring of the strain gages provides a measure of onset and progression of IGA and SCC within the autoclave model. These measurements can provide a prediction of the onset of IGA and SCC within the actual power generator, allowing corrective action to be taken before a pipe fails.

摘要翻译： 使用高压灭菌器封闭的侧流模型锅炉来预测与发电机相关的管道内的晶间侵袭（“IGA”）和应力腐蚀开裂（“SCC”）的发生。 发电机最终给水流体耦合到模型锅炉内的管道，该管道是应变计监测的，优选地使用焊接的光纤应变计装置。 所监测的管道包括缝隙区域，其产生供水中的化学杂质变浓缩的缺水区域。 位于监控管道的一部分内的圆柱形加热器促进缺水区域。 管壁的圆柱形部分通常在包围缝隙的区域中变薄。 稀释促进监测管内IGA / SCC的发生，并且还被动地放大IGA / SCC的作用以促进更容易的应变检测。 为了进一步促进应力，监控的管道从轴向载荷进行装载和卸载。 应变计测量中的漂移可以通过在轴向载荷和无载条件下进行测量来实质上消除，因为这两个条件可以在彼此的短时间内（例如几分钟）内达到。 应变计的长期监测提供了高压釜模型中IGA和SCC的发病和进展的量度。 这些测量可以提供对实际发电机内IGA和SCC发生的预测，从而允许在管道故障之前采取纠正措施。

公开(公告)号：US5235624A

公开(公告)日：1993-08-10

申请号：US758683

申请日：1991-09-12

申请人： Michel Bordy ,  Bernard Gebelin

发明人： Michel Bordy ,  Bernard Gebelin

IPC分类号： G21C17/07

CPC分类号： G21C17/07

摘要： The fuel element is inserted into a cell, under water, in a pool. Compressed air is injected into the cell so as to drain it of water. A pressure lower than atmospheric pressure is established in the cell and then the gases contained in the cell are subjected to a stream of scavenging air and are collected in a fission product detecting unit. Water is introduced into the cell, the water in the cell is sampled, fission products in the water sample are detected and the fuel element is extracted from the cell if the possible presence of a leak from this fuel element is determined. The detection device comprises a cell having an elongate body delimiting a central housing for a fuel element and end parts. One of the end parts, traversed by a channel in the extension of the housing, receives a cap for opening and closing the channel associated with a remotely controllable opening and closing arrangement. The device also comprises a fluid circuit enabling the cell to be supplied with pressurized water and compressed air.

摘要翻译： 将燃料元件插入电池中，在水下，在池中。 将压缩空气注入到电池中以便将其排出水。 在电池中建立低于大气压的压力，然后将包含在电池中的气体经受清除空气流并收集在裂变产物检测单元中。 将水引入电池中，对电池中的水进行采样，检测水样中的裂变产物，并确定燃料元件是否从该燃料元件泄漏可能出现。 检测装置包括具有限定用于燃料元件和端部的中心壳体的细长主体的电池。 通过在壳体的延伸部中的通道穿过的一个端部部分接收用于打开和关闭与可遥控的打开和关闭装置相关联的通道的盖。 该装置还包括使电池能够被供应加压水和压缩空气的流体回路。

公开(公告)号：US5118463A

公开(公告)日：1992-06-02

申请号：US472234

申请日：1990-01-30

申请人： Michel Bordy ,  Pascal Descot ,  Pierre Amiet

发明人： Michel Bordy ,  Pascal Descot ,  Pierre Amiet

IPC分类号： G21C17/07

CPC分类号： G21C17/07

摘要： The assembly (1) is immersed in the water of a pool and placed in vertical position. Detection of the rods (6) of the assembly exhibiting cracks giving rise to leakage is ensured by transmission of ultrasonic waves along the length of each of the rods (6) and by measuring the attenuation of the ultrasonic waves due to the presence of water inside the rods (6) whose cladding is cracked. The ultrasonic waves are picked up after propagation on the cladding of the rods (6) of the assembly along their length, below the lower end fitting (5) in place on the assembly (1). The detecting device comprises an ultrasonic transducer (11) capable of transmitting ultrasonic waves along the length of the rod from its upper part, and a receiver probe (16) for the ultrasonic waves, placed under the lower end fitting (5).

摘要翻译： 将组件（1）浸入池的水中并放置在垂直位置。 通过沿着每个杆（6）的长度传播超声波，并且通过测量由于内部存在水而引起的超声波的衰减，来确保出现产生泄漏的裂纹的组件的杆（6）的检测 其包层破裂的杆（6）。 在组件的杆（6）的包层上沿着它们的长度，在下端配件（5）下方的组件（1）上的适当位置传播超声波。 检测装置包括能够从其上部沿杆的长度传输超声波的超声波换能器（11），以及放置在下端配件（5）下方的用于超声波的接收器探头（16）。

公开(公告)号：US5112566A

公开(公告)日：1992-05-12

申请号：US336999

申请日：1989-04-12

申请人： Donald F. Butzin ,  Edward W. Meeka ,  George W. Tunnell ,  Edgar E. Salvo, Jr.

发明人： Donald F. Butzin ,  Edward W. Meeka ,  George W. Tunnell ,  Edgar E. Salvo, Jr.

IPC分类号： G01B21/20 ,  G01B5/00 ,  G21C17/06 ,  G21C17/07

CPC分类号： G21C17/07 ,  G01B5/0002

摘要： Disclosed is a device for measuring dimensional characteristics of an elongate component which comprises:(a) an elongate rigid support that bears (i) an upper platform upon which is mounted a drive; (ii) a clamp mechanism for securing said component about its proximal end in a reference position; (iii) a lower platform which supports a pedestal for securing said component about its distal end in a reference position; and(b) a sensor carriage movably mounted to said rigid support and operatively connected to said drive for movement along the elongate extent of said support and having an opening penetrating therethrough for receiving said elongate component when it is secured by and substantially parallel to said rigid support, said carrier bearing a plurality of pivotally-mounted bell cranks spaced about said opening, each bell crank having a wheel for riding on said component during movement of the carrier and being in contact with a sensor capable of providing a signal correlative to displacement of the bell crank during movement of the carrier along the elongate component.

公开(公告)号：US5096656A

公开(公告)日：1992-03-17

申请号：US362130

申请日：1989-06-06

申请人： Bernard Moreau

发明人： Bernard Moreau

IPC分类号： G21C17/003 ,  G21C17/06 ,  G21C17/07 ,  G21C19/07

CPC分类号： G21C19/07 ,  G21C17/07

摘要： A detection unit (20) is moved under water inside the fuel storage pond (15), over the entire height and in the vicinity of a wall of the cell (2). The detection unit (20) comprises at least one probe for monitoring the thickness of the material. The probe readings are collected from a region (22) situated above the pond (15) and these readings are compared with reference measurements. The monitoring process makes it possible to verify the presence of the neutron-absorbing material in the side walls (10) of the cell (2).

摘要翻译： 检测单元（20）在燃料储存池（15）的内部在整个高度和电池（2）的壁附近在水下移动。 检测单元（20）包括用于监测材料厚度的至少一个探针。 从位于池塘（15）上方的区域（22）收集探针读数，并将这些读数与参考测量值进行比较。 监测过程使得可以验证电池（2）的侧壁（10）中的中子吸收材料的存在。

公开(公告)号：US4681730A

公开(公告)日：1987-07-21

申请号：US802276

申请日：1985-11-27

申请人： Daniel Beuneche ,  Christian Mauvieux ,  Pierre Amiet

发明人： Daniel Beuneche ,  Christian Mauvieux ,  Pierre Amiet

IPC分类号： G01N29/265 ,  G21C17/07 ,  G21C17/00

CPC分类号： G01N29/265 ,  G21C17/07

摘要： An ultrasonic transducer carried by rod means of dimensions such that it may be inserted in the assembly between an end piece and the caps of the element, and a crossed movement moving mechanism for bringing the transducer above the different elements. It further comprises a mechanism for moving rod elements in the longitudinal direction of the fuel elements. The transducer is set up on rod elements with at least one degree of freedom about a shaft transversal to the fuel elements so as to be able to be applied flat against the end face of a cap.

摘要翻译： 超声换能器由杆装置承载，其尺寸使得其可以插入组件中，在端件和元件的盖之间，以及用于将换能器带到不同元件上方的交叉运动移动机构。 其还包括用于在燃料元件的纵向方向上移动杆元件的机构。 传感器设置在杆元件上，并且在与燃料元件横向的轴上具有至少一个自由度，以便能够平坦地施加在盖的端面上。

公开(公告)号：US4353863A

公开(公告)日：1982-10-12

申请号：US165812

申请日：1980-07-03

申请人： Leon G. Leenders

发明人： Leon G. Leenders

IPC分类号： G21C17/06 ,  G21C17/07 ,  G21C17/00

CPC分类号： G21C17/07

摘要： There is described a method for localizing a leaking rod from a nuclear fuel assembly, in which for each rod in an assembly, the radio-activity in at least two discrete rod rows in which said rod lies is measured and a leaking rod is localized by sensing a lowering of the radio-activity in the tested rows where said rod lies relative to the radio-activity in an identical row of non-leaking rods.There is further described an equipment for the working of this method.

摘要翻译： 描述了一种用于使来自核燃料组件的泄漏杆定位的方法，其中对于组件中的每个杆，在其中测量所述杆所处的至少两个离散杆列中的射线活动，并且泄漏杆被 感测到相对于同一排非泄漏杆中的放射性活动，所述杆位于所测试的行中的放射性活性的降低。 进一步描述了用于该方法的工作的设备。

公开(公告)号：US4225388A

公开(公告)日：1980-09-30

申请号：US901007

申请日：1978-04-27

申请人： Hubert Bellaiche ,  Vladimir Zecevic

发明人： Hubert Bellaiche ,  Vladimir Zecevic

IPC分类号： G21C3/02 ,  G21C17/07 ,  G21C17/00

CPC分类号： G21C17/07

摘要： In the detection of cracks in fuel element units using a crack detection cell, the cell includes heating means which are energized to heat the unit. The heating means form part of a pocket in which the unit is received, the pocket being received in a double-walled chamber which can be thermally insulated from the surrounding medium.

摘要翻译： 在使用裂纹检测单元检测燃料元件单元中的裂纹时，电池包括通电以加热该单元的加热装置。 加热装置形成容纳单元的口袋的一部分，该口袋被容纳在可与周围介质隔热的双壁室中。