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1. 发明公开

EP4367686A1 PROCÉDÉ DE FABRICATION D'UN ÉLÉMENT DE COMBUSTIBLE NUCLÉAIRE ET ÉLÉMENT DE COMBUSTIBLE NUCLÉAIRE 审中-公开
公开(公告)号：EP4367686A1
公开(公告)日：2024-05-15
申请号：EP22747964.9
申请日：2022-07-06
申请人： FRAMATOME
发明人： STEPNIK, Bertrand , GRASSE, Michel , MOYROUD, Christophe , JAROUSSE, Christophe
IPC分类号： G21C3/36 , G21C3/06 , G21C3/20 , G21C21/02 , G21C21/10
CPC分类号： G21C21/02 , G21C21/10 , G21C3/36 , G21C3/06 , G21C3/20 , Y02E30/30

2. 发明授权

EP3895182B1 VORRICHTUNG, SYSTEM UND VERFAHREN ZUM ERKENNEN VON TRANSPORTBOOTEN 审中-实审
公开(公告)号：EP3895182B1
公开(公告)日：2024-05-01
申请号：EP20701457.2
申请日：2020-01-21
IPC分类号： G21C3/58 , F27D3/02 , F27B21/00 , B22F3/00 , G21C21/02 , G21C3/62 , F27B21/04 , F27D19/00 , F27D21/04
CPC分类号： G21C3/58 , G21C3/623 , G21C21/02 , Y02E30/30 , F27B21/04 , F27D3/024 , F27D19/00 , F27D21/04

3. 发明授权

EP3224159B1 DISPOSITIF DE TRANSFERT DE POUDRE A ECOULEMENT AMELIORE 有权
公开(公告)号：EP3224159B1
公开(公告)日：2018-12-12
申请号：EP15800815.1
申请日：2015-11-24
申请人： COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES
发明人： BENEDETTI, Arnaud , SORNAY, Philippe , BROTHIER, Méryl
IPC分类号： B65D88/68 , B65G65/48 , G21C21/02 , G21C3/04
CPC分类号： G21C21/04 , G21C21/02 , G21C2003/045

4. 发明公开

EP3389053A1 METHOD OF ASSEMBLING A NUCLEAR REACTOR ABSORBER ELEMENT 审中-公开
公开(公告)号：EP3389053A1
公开(公告)日：2018-10-17
申请号：EP16873438.2
申请日：2016-05-23
申请人： Publichnoye Akcionernoe Obshchestvo "Mashinostroitelny Zavod"
发明人： AKSENOV, Pyotr Mikhaylovich , DUBOVITSKIY, Andrey Vladimirovich , LUZAN, Yuriy Vasil'yevich , KIRILIN, Artemiy Vyacheslavovich
IPC分类号： G21C7/10 , G21C21/02
CPC分类号： G21C7/10 , G21C21/02 , Y02E30/39
摘要： Invention relates to nuclear engineering, in particular, to method of assembling absorber elements (AE) of pressurized water reactor control and protection systems , e.g., VVER-1000 , AES-2006 and others.
There is offered the method of assembling nuclear reactor absorbing element, including preparation of can in form of tube, its pressurization from one edge by means of bottom nozzle having conic shape, loading of can by absorbing materials in form of pellets or powder, fastening of absorbing material from axial displacement with spring plunger, pressurization of a can from another edge by means of upper nozzle comprising ballast, characterized in that welding of bottom nozzle with can is performed with argon-arc welding, and pressurization of AE is performed with upper nozzle by means of butt resistance welding, wherein during latest operation an internal cavity of can is vacuumed and filled with indifferent gas.
Method of assembling nuclear reactor absorbing element, wherein the can pressurization is performed by means of nozzles made from same material as can, e.g. 42XHM alloy.
The said change of assembly method allows to increase reliability and operating capacity of AE while saving its efficiency.

5. 发明公开

EP3239985A4 LIGHT-WATER-REACTOR FUEL ROD, AND FUEL ASSEMBLY 审中-公开
公开(公告)号：EP3239985A4
公开(公告)日：2018-08-01
申请号：EP15902245
申请日：2015-08-25
申请人： HITACHI LTD
发明人： ISHIBASHI RYOU , TAKAMORI YOSHIYUKI , ZHANG XUDONG
IPC分类号： G21C3/06 , G21C3/07 , G21C3/10 , G21C3/30 , G21C21/02
CPC分类号： G21C3/10 , G21C3/06 , G21C3/07 , G21C3/30 , G21C21/02 , G21Y2002/102 , G21Y2002/207 , Y02E30/40
摘要： Provided herein is a fuel rod and a fuel assembly for light water reactors in which crack penetration to a fuel cladding tube or an end plug can be prevented even when cracking occurs at the joint between the fuel cladding tube and the end plug for which a ceramic base material is used. A fuel rod 10a for light water reactors includes: a cylindrical cladding tube 11 formed of a ceramic base material; a connection 21 formed of the same or similar material to the cladding tube 11; and an end plug 12a having a concave portion 12f of a continuously curved surface shape adapted to house the connection 21. The end plug 12a is formed of the same or similar material to the cladding tube 11. A slanted surface 11a formed at an end portion of the cladding tube 11, and a slanted surface 12d formed at an end portion of the end plug 12a are joined in contact with each other with a metallic joint material 20. The joint is supported by the connection 21.

6. 发明授权

EP3192077B1 METHOD OF MAKING A NUCLEAR FUEL PELLET FOR A NUCLEAR POWER REACTOR 有权
公开(公告)号：EP3192077B1
公开(公告)日：2018-06-06
申请号：EP15720661.6
申请日：2015-04-24
申请人： Westinghouse Electric Sweden AB
发明人： WIDEGREN, Hans , LAHODA, Edward J. , HALLSTADIUS, Lars
IPC分类号： G21C3/04 , G21C3/62 , G21C21/02 , G21C3/18 , G21C3/20
CPC分类号： G21C3/18 , G21C3/044 , G21C3/20 , G21C3/623 , G21C21/02 , G21C2003/045 , G21Y2002/20 , Y02E30/38
摘要： A method of making a nuclear fuel pellet for a nuclear power reactor. The method includes providing a nuclear fuel material in powder form, providing an additive, forming a so-called green pellet, wherein said additive is added either to said nuclear fuel material in powder form or to the green pellet, sintering the green pellet, wherein said additive is such that it causes larger grains in the nuclear fuel pellet, and wherein said additive is made of or includes a substance which causes the larger grains and which substantially leaves at least an outer portion of the pellet before and/or during the sintering step.

7. 发明授权

EP3094595B1 PROCÉDÉ DE PRÉPARATION D'UNE POUDRE D'OXYDE MÉTALLIQUE, PROCÉDÉ DE FABRICATION D'UNE PASTILLE D'OXYDE MÉTALLIQUE, POUDRE ET PASTILLE TELLES QU'OBTENUES SELON CES PROCÉDÉS ET LEURS UTILISATIONS 有权
标题翻译：用于制备金属氧化物粉末的方法，用于生产金属氧化物颗粒，粉末和糊剂的方法，例如由这种方法获得的方法及其用途
公开(公告)号：EP3094595B1
公开(公告)日：2018-04-25
申请号：EP15700571.1
申请日：2015-01-14
申请人： Orano Cycle , Commissariat à l'Énergie Atomique et aux Énergies Alternatives
发明人： MARTINEZ, Julien , AUDUBERT, Fabienne , CLAVIER, Nicolas , DACHEUX, Nicolas
IPC分类号： C01G43/025 , C01G56/00 , G21C3/62
CPC分类号： G21C3/623 , C01F15/00 , C01F17/0043 , C01G1/02 , C01G25/02 , C01G27/02 , C01G43/025 , C01G56/00 , C01G56/005 , C01G56/008 , C01P2002/72 , C01P2004/03 , C01P2004/50 , C01P2004/62 , C01P2004/64 , C01P2006/12 , G01N27/4073 , G21C21/02 , H01M8/1246 , H01M8/126 , H01M2008/1293 , Y02E30/38

8. 发明授权

EP2769383B1 METHOD FOR PRODUCING NUCLEAR FUEL PRODUCTS WITH A HIGH LOADING OF LOW ENRICHED URANIUM AND CORRESPONDING NUCLEAR FUEL PRODUCT 有权
标题翻译：高负荷低浓铀生产核燃料产品的方法及相应的核燃料产品
公开(公告)号：EP2769383B1
公开(公告)日：2018-04-18
申请号：EP11810876.0
申请日：2011-10-21
申请人： FRAMATOME
发明人： STEPNIK, Bertrand , GRASSE, Michel , BOURDAT, Gilles , COULLOMB, Christel , MOYROUD, Christophe
IPC分类号： G21C3/60 , G21G4/00 , G21G4/08 , B22F3/10 , B22F5/00 , B22F9/04 , G21C3/02 , G21C3/07 , G21C21/02
CPC分类号： G21C21/02 , B22F3/10 , B22F5/00 , B22F9/04 , G21C3/02 , G21C3/07 , G21C3/60 , G21G4/08 , Y02E30/38 , Y10T29/49828
摘要： A method of producing a nuclear fuel product is provided. The method includes the steps of providing a core comprising aluminium and low-enriched uranium; and sealing said core in a cladding. The core has a low-enriched uranium loading strictly higher than 3.0 gU/cm3 and includes less than 10 wt % of aluminium phase and/or aluminium compounds other than UAl2 phase, than UAl3 phase, and than UAl4 phase. A corresponding nuclear fuel product is also provided.

9. 发明公开

EP3239985A1 LIGHT-WATER-REACTOR FUEL ROD, AND FUEL ASSEMBLY 审中-公开
标题翻译：轻水反应堆燃料杆和燃料组件
公开(公告)号：EP3239985A1
公开(公告)日：2017-11-01
申请号：EP15902245.8
申请日：2015-08-25
申请人： Hitachi, Ltd.
发明人： ISHIBASHI, Ryou , TAKAMORI, Yoshiyuki , ZHANG, Xudong
IPC分类号： G21C3/06 , G21C3/10 , G21C3/30 , G21C21/02
CPC分类号： G21C3/10 , G21C3/06 , G21C3/07 , G21C3/30 , G21C21/02 , G21Y2002/102 , G21Y2002/207 , Y02E30/40
摘要： Provided herein is a fuel rod and a fuel assembly for light water reactors in which crack penetration to a fuel cladding tube or an end plug can be prevented even when cracking occurs at the joint between the fuel cladding tube and the end plug for which a ceramic base material is used. A fuel rod 10a for light water reactors includes: a cylindrical cladding tube 11 formed of a ceramic base material; a connection 21 formed of the same or similar material to the cladding tube 11; and an end plug 12a having a concave portion 12f of a continuously curved surface shape adapted to house the connection 21. The end plug 12a is formed of the same or similar material to the cladding tube 11. A slanted surface 11a formed at an end portion of the cladding tube 11, and a slanted surface 12d formed at an end portion of the end plug 12a are joined in contact with each other with a metallic joint material 20. The joint is supported by the connection 21.
摘要翻译：本文提供了一种用于轻水反应堆的燃料棒和燃料组件，其中即使在燃料包壳管和陶瓷端塞的接合处发生裂纹时，也可防止裂纹渗入燃料包壳管或端塞，使用基材。用于轻水反应堆的燃料棒10a包括：由陶瓷基材形成的圆筒形包层管11; 由与包壳管11相同或相似的材料形成的连接部21; 以及具有适于容纳连接件21的连续曲面形状的凹部12f的端塞12a。端塞12a由与包层管11相同或类似的材料形成。倾斜表面11a形成在端部以及形成在端塞12a的端部处的倾斜表面12d利用金属接头材料20彼此接触地接合。接头由连接件21支撑。

10. 发明公开

EP3076398A4 NUCLEAR FUEL PELLET HAVING ENHANCED THERMAL CONDUCTIVITY, AND PREPARATION METHOD THEREOF 审中-公开
标题翻译： KERNBRENNSTOFFTABLETTEN MIT VERBESSERTERWÄRMELEITFÄHIGKEITUND HERSTELLUNGSVERFAHRENDAFÜR
公开(公告)号：EP3076398A4
公开(公告)日：2017-06-21
申请号：EP14865710
申请日：2014-11-21
申请人： JOINT STOCK COMPANY AKME-ENGINEERING
发明人： KURINA IRINA SEMYONOVNA , POPOV VJACHESLAV VASILYEVICH , RUMYANTSEV VLADIMIR NIKOLAEVICH , RUSANOV ALEKSANDER EVGENIEVICH , ROGOV STEPAN SERGEEVICH , SHARIKPULOV SAID MIRFAISOVICH
IPC分类号： G21C3/04 , G21C3/58 , G21C3/62
CPC分类号： G21C3/623 , G21C3/044 , G21C3/58 , G21C21/02 , G21C2003/045 , Y02E30/38
摘要： The invention relates to nuclear physics, and specifically to reactor fuel elements and units thereof, and particularly to the composition of solid ceramic fuel elements based on uranium dioxide, intended for and exhibiting characteristics for being used in variously purposed nuclear reactors. The result consists in a more reliable, special structure and a simple composition of uranium dioxide without heterogeneous fuel pellet additives, approaching the characteristics of a monocrystal having enhanced, and specifically exceeding reference data, thermal conductivity as temperature increases, and a simple production method thereof. The result is achieved in that pores of between 1 and 5 microns in size are distributed along the perimeters of grains in the micro-structure of each metal cluster in a nuclear fuel pellet, and in that located within the grains are pores which are predominantly nano-sized. In addition, the metal clusters comprise between 0.01 and 1.0 percent by mass. The invention provides for a method of preparing a nuclear fuel pellet, including precipitating metal hydroxides, in two stages, having different pH levels. Uranium metal is melted at a temperature exceeding 1150°C, sintering is carried out in an insignificant amount of liquid phase at a temperature ranging between 1600 and 2200°C in a hydrogen medium until forming uranium dioxide, the structure of which includes metal clusters dispersed therein. An X-ray photon spectroscope is used for identifying the new structure of the UO2 pellet and the additional U-U chemical bond.
摘要翻译：本发明涉及核物理学，具体涉及反应堆燃料元件及其单元，并且具体涉及基于二氧化铀的固体陶瓷燃料元件的组合物，旨在用于并表现出用于各种目的的核反应堆的特征。其结果是具有更可靠，特殊的结构和二氧化铀的简单组成，没有非均质燃料颗粒添加剂，接近单晶的特性已经提高，特别是超过参考数据，随着温度升高导热率，以及其简单的生产方法。其结果得以实现，其尺寸在1至5微米之间的孔隙沿着核燃料芯块中每个金属簇的微观结构中的晶粒的周边分布，并且位于晶粒内的是主要为纳米尺度的。另外，金属团簇包含0.01-1.0质量％。本发明提供了一种制备核燃料芯块的方法，该方法包括两步沉淀金属氢氧化物，具有不同的pH值。铀金属在超过1150℃的温度下熔化，在氢气介质中在1600和2200℃之间的温度范围内，在不明显量的液相中进行烧结，直至形成二氧化铀，其结构包括分散的金属团簇在其中。 X射线光子分光镜用于识别UO2颗粒的新结构和额外的U-U化学键。

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