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公开(公告)号：US5361286A
公开(公告)日：1994-11-01
申请号：US63595
申请日：1993-05-19
申请人： David O. Monserud , David H. Bothell , Paul H. Tacheron , Michael C. McDonald , David E. Steele , James E. Charnley , Gunnar V. Vatvedt
发明人： David O. Monserud , David H. Bothell , Paul H. Tacheron , Michael C. McDonald , David E. Steele , James E. Charnley , Gunnar V. Vatvedt
IPC分类号： G21C15/25 , B08B9/04 , G21C1/08 , G21C5/02 , G21C15/00 , G21C19/02 , G21F9/28 , G21C19/00 , B08B3/00
CPC分类号： G21C15/00 , B08B9/0433 , G21C5/02 , G21C1/084 , G21Y2002/201 , G21Y2002/40 , G21Y2004/50 , G21Y2004/502 , Y02E30/40
摘要： A method for cleaning inlet mixers while they remain in their operating position within a nuclear reactor. A water-powered cleaning tool is inserted by remote control into the inlet mixer via a secondary inlet opening. Following insertion of the cleaning tool, the internal surfaces of the inlet mixer are cleaned with a waterjet created from an ultra-high-pressure source and directed by controlled positioning of a cleaning head having an nozzle which scans the cleaning waterjet across the surface to be cleaned. The cleaning system for carrying out the method includes a nozzle cleaning tool, a throat/barrel/flare cleaning tool, pumping systems for supplying ultra-high-pressure equal to at least 20,000 psi and low-pressure water to an installed cleaning tool, a launching system located at the top of the opened reactor vessel for feeding the water conduits (power), control cables, monitoring cables (instrument) and cleaning tool into and out of the inlet mixer, and a computerized process monitoring and control system.
摘要翻译： 入口混合器在核反应堆内保持其工作状态时清洗的方法。 水力清洁工具通过遥控器通过次级入口插入入口混合器。 在插入清洁工具之后，使用由超高压源产生的水射流来清洁入口混合器的内表面，并通过受控地定位具有喷嘴的清洁头来指导清洁水刀穿过表面来进行 清理 用于执行该方法的清洁系统包括喷嘴清洁工具，喉/桶/火炬清洁工具，用于向安装的清洁工具提供等于至少20,000psi的超高压水和低压水的泵送系统， 位于打开的反应堆容器顶部的发射系统，用于将进水管道（电力），控制电缆，监测电缆（仪器）和清洁工具进出入口混合器，以及计算机化过程监测和控制系统。
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公开(公告)号：US5418824A
公开(公告)日：1995-05-23
申请号：US63596
申请日：1993-05-19
申请人： David O. Monserud , David H. Bothell , Paul H. Tacheron , Michael C. McDonald , David E. Steele , James E. Charnley , Gunnar V. Vatvedt
发明人： David O. Monserud , David H. Bothell , Paul H. Tacheron , Michael C. McDonald , David E. Steele , James E. Charnley , Gunnar V. Vatvedt
IPC分类号： G21C15/25 , B08B9/02 , B08B9/04 , G21C1/08 , G21C15/24 , G21C19/02 , G21F9/28 , G21C19/00 , B08B3/00
CPC分类号： B08B9/023 , B08B9/0433 , G21C1/084 , G21Y2002/103 , G21Y2004/50 , Y02E30/31
摘要： An apparatus for cleaning inlet mixers while they remain in their operating position within a nuclear reactor. A cleaning tool is inserted by remote control into the inlet mixer via a secondary inlet opening. Following insertion of the cleaning tool, the internal surfaces of the inlet mixer are cleaned with a waterjet created from an ultra-high-pressure source and directed by controlled positioning of a cleaning head having a nozzle which scans the cleaning waterjet across the surface to be cleaned. The cleaning system includes a nozzle cleaning tool, a throat/barrel/flare cleaning tool, pumping systems for supplying ultra-high-pressure equal to at least 20,000 psi and low-pressure water to an installed cleaning tool, a launching system located at the top of the opened reactor vessel for feeding the water conduits (power), control cables, monitoring cables (instrument) and cleaning tool into and out of the inlet mixer, and a computerized process monitoring and control system.
摘要翻译： 一种用于在入口混合器保持在核反应堆内的操作位置时清洁入口混合器的装置。 一个清洁工具通过遥控器插入到入口混合器中，通过次级入口开口。 在插入清洁工具之后，入口混合器的内表面用由超高压源产生的水刀清洁，并通过具有喷头的清洁头的受控定位来引导，该清洁头具有扫描清洁水刀穿过表面 清理 清洁系统包括喷嘴清洁工具，喉部/桶/火炬清洁工具，用于向安装的清洁工具提供等于至少20,000psi的超高压和低压水的泵送系统，位于 打开的反应堆容器的顶部，用于将水管道（电力），控制电缆，监测电缆（仪器）和清洁工具进出入口混合器，以及计算机化过程监测和控制系统。
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公开(公告)号：US5521951A
公开(公告)日：1996-05-28
申请号：US311300
申请日：1994-09-23
CPC分类号： G21C5/10 , G21C13/02 , G21Y2002/104 , G21Y2002/40 , G21Y2004/301 , G21Y2004/504 , Y02E30/40 , Y10T29/49741 , Y10T403/75
摘要： A method and an apparatus for repairing a shroud in which one or more shroud girth seam welds have experienced SCC. The method involves the placement of a plurality of brackets around the outer circumference of the shroud at a plurality of azimuthal positions. Each bracket has circular holes for receiving respective tapered pin assemblies. Corresponding circular holes are machined in the shroud wall at positions which will align with the holes in the bracket. Each tapered pin assembly is inserted and then manipulated remotely from outside the shroud. Each tapered pin assembly consists of three types of parts: a threaded tapered pin, a slotted sleeve with a tapered bore, and a threaded nut. When fully installed, the tapered pin is encased by the sleeve. As the tapered pin is tensioned, the sleeve exerts a radially outwardly directed contact pressure on the cylindrical surface of the aligned circular holes respectively formed in the bracket and shroud.
摘要翻译： 一种用于修理护罩的方法和装置，其中一个或多个护罩环围缝焊缝经历了SCC。 该方法包括在多个方位角位置上围绕护罩的外周布置多个支架。 每个支架具有用于接收各个锥形销组件的圆形孔。 相应的圆孔在护罩壁上加工成与支架中的孔对齐的位置。 插入每个锥形销组件，然后从护罩外部远程操作。 每个锥形销组件由三种类型的部件组成：螺纹锥形销，带锥形孔的开槽套管和螺纹螺母。 当完全安装时，锥形销被套筒包住。 当锥形销被张紧时，套筒在分别形成在支架和护罩中的对准的圆形孔的圆柱形表面上施加径向向外的接触压力。
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4.发明授权Method and apparatus for local protection of piping systems from stress corrosion cracking 失效用于局部保护管道系统免受应力腐蚀开裂的方法和设备
公开(公告)号：US5392325A
公开(公告)日：1995-02-21
申请号：US66850
申请日：1993-05-21
CPC分类号： G21C17/0225 , B01J35/04 , G21C17/022 , G21Y2002/103 , G21Y2004/10 , G21Y2004/304
摘要： A catalytic recombiner device for reacting two or more molecular species having dilute concentrations in fluids flowing in pipes at elevated temperatures. The species are stable in the bulk fluid, but because of a high electrochemical potential, the species create conditions favorable to stress corrosion cracking in the pipe walls. If the pipe forms a portion of a coolant system, as in a nuclear power plant, the dissolved chemical species are transported and distributed throughout the system with undesirable consequences. To reduce the electrochemical potential, a cartridge having catalytic surfaces is installed in the flow upstream of the component to be protected against stress corrosion cracking. The catalytic surfaces of the cartridge form a small amount of benign reaction product (e.g. water), thereby reducing the concentration of undesirable species. The presence of a compact catalytic recombiner at strategic locations substantially reduces the electrochemical potential and protects both the piping and the vessels and internals connected to the piping from corrosive attack.
摘要翻译： 一种催化重组装置，用于使两种或多种在高温下在管道中流动的流体中具有稀释浓度的分子物质反应。 该物质在散装液体中是稳定的，但是由于电化学势很高，这些物质产生有利于在管壁中应力腐蚀开裂的条件。 如果管道形成冷却剂系统的一部分，如在核电站中一样，溶解的化学物质被运输并分布在整个系统中，具有不期望的后果。 为了减少电化学势，具有催化表面的料筒安装在组件上游的流中，以防止应力腐蚀开裂。 筒的催化表面形成少量的良性反应产物（例如水），从而降低不需要的物质的浓度。 紧急催化重整器在战略位置的存在大大降低了电化学势，同时保护了连接到管道上的管道和容器以及内部件不受腐蚀侵袭。
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5.发明授权Control rod absorber section fabrication by square tube configuration and dual laser welding process 失效控制杆吸收器部分采用方管配置和双激光焊接工艺制造
公开(公告)号：US4925620A
公开(公告)日：1990-05-15
申请号：US250631
申请日：1988-09-29
CPC分类号： G21C21/18 , G21C7/113 , G21Y2002/104 , G21Y2002/206 , G21Y2004/30 , Y02E30/39
摘要： An apparatus and process for the construction of a cruciformed section control rod is disclosed. The control rod is characterized by having square exterior sectioned tubes with central cylindrical volumes for the containment of neutron absorbing poisons. In the process, these tubes are welded together at the corners of the square sections to form the planar members of the cruciformed shaped rods. An apparatus and process is disclosed in which the rods are all held by a jig in the same configuration as is ultimately fabricated. Thereafter, the jig is drawn through fixtures, which fixtures accurately guide the rods to be joined by welding past paired and opposed laser welding heads. By the expedient of positioning the laser and rapidly drawing the braced together tubes by the laser, control rod fabrication occurs. There results a solid, integral control rod constituting a suitable pressure vessel for neutron absorbers for control of nuclear reactions.
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公开(公告)号：US5530219A
公开(公告)日：1996-06-25
申请号：US312332
申请日：1994-09-23
CPC分类号： C21D9/50 , B23K35/0205 , B23K35/0277 , B23K9/02 , B23K9/0213 , C21D1/00 , G21C13/02 , G21C13/087 , C21D2221/10 , G21Y2002/104 , G21Y2002/202 , G21Y2002/302 , G21Y2002/303 , G21Y2002/40 , G21Y2004/301 , G21Y2004/50 , G21Y2004/501 , Y02E30/40 , Y10T29/49352
摘要： A welded bracket for use in repairing a shroud in which one or more shroud girth seam welds have experienced stress corrosion cracking. A plurality of the welded brackets are placed around the outer circumference of the shroud at a plurality of azimuthal positions at the elevation of the top guide support ring. Each bracket is constructed by welding curved plates. Welding productivity is increased by using an extremely thin weld joint design with a non-circular cylindrical, thin welding electrode having an elongated cross-sectional shape. During welding, the elongated dimension is aligned parallel with the length of the weld joint. This combination enables joining of the welded bracket parts with both the initial weld joint preparation and the completed weld having a uniquely thin width and with a high aspect ratio of depth to width. This high aspect ratio reduces the number of weld beads needed to build the weld joint. The high aspect ratio, in combination with torch travel speeds of 12 or more inches per minute, increase welding productivity, thereby reducing reactor downtime resulting from shroud repair.
摘要翻译： 用于修理护罩的焊接支架，其中一个或多个护罩环缝缝焊接已经经历了应力腐蚀开裂。 多个焊接支架在顶部引导支撑环的高度处以多个方位位置围绕护罩的外周放置。 每个托架通过焊接曲面板构成。 通过使用具有细长横截面形状的非圆形圆柱形，细焊接电极的非常薄的焊接接头设计来提高焊接生产率。 在焊接期间，细长尺寸与焊接接头的长度平行排列。 这种组合使得焊接的支架部件能够与初始焊接接头准备物和完成的焊接件具有独特的薄的宽度并且具有高宽比的高宽比。 这种高纵横比减少了建立焊缝所需的焊缝数量。 高纵横比与12分钟或更多英寸每分钟的割炬行进速度相结合，提高了焊接生产率，从而减少了护罩修复导致的反应堆宕机时间。
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7.发明授权Internal passive water recombiner/hydrogen peroxide decomposer for a boiling water reactor 失效用于沸水反应器的内部被动水重组器/过氧化氢分解器
公开(公告)号：US5287392A
公开(公告)日：1994-02-15
申请号：US981667
申请日：1992-11-25
IPC分类号： G21D1/00 , B01J35/04 , G21C17/022 , G21C19/317 , G21D3/08
CPC分类号： G21C17/0225 , B01J35/04 , G21C19/317 , G21Y2002/501 , G21Y2004/30
摘要： An internal passive catalytic device operating in the water phase of a boiling water reactor vessel downstream of the steam/water separator location. The device consists of catalytic material arranged and situated such that all (except perhaps a small leakage flow) water phase exiting the water/steam separator device flows over the surface of the catalytic material. The catalytic surfaces decompose dissolved hydrogen peroxide into water and oxygen. When the substrate of the catalytic material is plated or alloyed with a water recombination catalyst such as a noble metal, the catalytic surfaces also catalyze the recombination of dissolved hydrogen and oxygen molecules into water. The passive catalytic device is constructed to ensure that the pressure drop of the reactor water across the device is very small. The device includes a stainless steel flow-through housing packed with catalytic material, which could take the form of tangled wire or strips, crimped ribbon, porous sintered metal composite or any other structure having a high surface area-to-volume ratio.
摘要翻译： 在蒸汽/水分离器位置下游的沸水反应器容器的水相中操作的内部被动催化装置。 该装置由布置和定位的催化材料组成，使得离开水/蒸汽分离器装置的所有（除了可能是小的泄漏流）水相流过催化材料的表面。 催化表面将溶解的过氧化氢分解成水和氧气。 当催化材料的基底与诸如贵金属的水复合催化剂电镀或合金化时，催化表面还催化溶解的氢和氧分子与水的重组。 被动催化装置被构造成确保反应堆水穿过装置的压降非常小。 该装置包括填充有催化材料的不锈钢流通壳体，其可以采取缠结线或条带，卷曲带，多孔烧结金属复合材料或具有高表面积 - 体积比的任何其它结构的形式。
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8.发明授权Control rod absorber section fabrication by square tube configuration and dual laser welding process 失效控制杆吸收器部分采用方管配置和双激光焊接工艺制造
公开(公告)号：US4980535A
公开(公告)日：1990-12-25
申请号：US475570
申请日：1990-02-06
CPC分类号： G21C21/18 , G21C7/113 , G21Y2002/104 , G21Y2002/206 , G21Y2004/30 , Y02E30/39
摘要： An apparatus and process for the construction of a cruciformed section control rod is disclosed. The control rod is characterized by having square exterior sectioned tubes with central cylindrical volumes for the containment of neutron absorbing poisons. In the process, these tubes are welded together at the corners of the square sections to form the planar members of the cruciformed shaped rods. An apparatus and process is disclosed in which the rods are all held by a jig in the same configuration as is ultimately fabricated. Thereafter, the jig is drawn through fixtures, which fixtures accurately guide the rods to be joined by welding past paired and opposed laser welding heads. By the expedient of positioning the laser and rapidly drawing the braced together tubes by the laser, control rod fabrication occurs. There results a solid, integral control rod constituting a suitable pressure vessel for neutron absorbers for control of nuclear reactions.
摘要翻译： 公开了一种用于构造十字形部分控制杆的装置和方法。 控制杆的特征在于具有用于容纳中子吸收毒物的具有中心圆柱体积的方形外部分段管。 在该过程中，这些管在方形部分的角部焊接在一起，以形成十字形棒的平面部件。 公开了一种装置和方法，其中杆全部由与最终制造的相同构造的夹具保持。 此后，夹具通过夹具拉出，夹具通过焊接成对且相对的激光焊接头，精确地引导待接合的杆。 通过定位激光器并通过激光快速拉伸支撑在一起的管的优点，发生控制棒制造。 产生一个固体的整体控制棒，构成用于控制核反应的中子吸收器的合适的压力容器。
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9.发明授权Assemblies and methods for coupling piping to a safe end of a nuclear reactor 失效将管道连接到核反应堆安全端的组件和方法
公开(公告)号：US6000731A
公开(公告)日：1999-12-14
申请号：US13534
申请日：1998-01-26
IPC分类号： F16L37/098 , F16L37/00
CPC分类号： G21C13/032 , F16L37/098 , G21C13/02 , Y02E30/40
摘要： Thermal sleeve assemblies for connecting a core spray line to a reactor safe end without welding. In one embodiment the thermal sleeve assembly includes a t-box junction, a thermal sleeve and a finger assembly. The t-box junction is attached core spray lines and the thermal sleeve. The finger assembly is coupled to the thermal sleeve and includes several fingers. The finger assembly includes a ring which is coupled to the thermal sleeve so that an opening in the ring is aligned with a bore extending through the thermal sleeve. The fingers are substantially L shaped and are attached to the ring so that when the ring is welded to the thermal sleeve second end the fingers extend from the thermal sleeve.
摘要翻译： 用于将芯喷射管连接到反应堆安全端而不进行焊接的热套管组件。 在一个实施例中，热套筒组件包括一个t盒接头，一个热套筒和一个手指组件。 T型箱结连接有核心喷涂线和热套筒。 手指组件联接到热套筒并且包括若干指状物。 手指组件包括环，其连接到热套筒，使得环中的开口与延伸穿过热套筒的孔对准。 手指基本上是L形并且被附接到环上，使得当环被焊接到热套筒第二端时，手指从热套筒延伸。
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公开(公告)号：US5392322A
公开(公告)日：1995-02-21
申请号：US155731
申请日：1993-11-22
CPC分类号： G21C5/10 , G21C1/084 , G21Y2002/104 , G21Y2004/301 , Y02E30/40 , Y10T29/49741
摘要： A method and an apparatus for repairing a shroud in which the top guide support ring has been subjected to stress corrosion cracking. The method involves the placement of a plurality of clamps around the outer circumference of the shroud at a plurality of azimuthal positions between jet pump assemblies. The clamps structurally replace the welds that join the top guide support ring to the upper and lower shroud walls. The shroud repair clamps support the top guide, the fuel bundle assemblies and the shroud head. The shroud repair clamps are bolted to the shroud above and below the top guide support ring in a manner which will prevent relative movement across the top guide support ring welds during all normal and upset conditions.
摘要翻译： 一种修理护罩的方法和装置，其中顶部导向支撑环已遭受应力腐蚀开裂。 该方法包括在喷射泵组件之间的多个方位位置处将多个夹具放置在护罩的外周周围。 夹具在结构上替代了将顶部导向支撑环连接到上部和下部护罩壁上的焊缝。 护罩修理夹支撑顶部引导件，燃料束组件和护罩头。 护罩修理夹具以一定的方式在顶部导向支撑环上方和下方螺栓连接到护罩上，以防止在所有正常和不适的条件下穿过顶部导向支撑环焊缝的相对运动。
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