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1. 发明申请

US20220250936A1 SALT WALL IN A MOLTEN SALT REACTOR 有权
公开(公告)号：US20220250936A1
公开(公告)日：2022-08-11
申请号：US17493838
申请日：2021-10-04
申请人： Alpha Tech Research Corp
发明人： John Benson , Matthew Memmott
IPC分类号： C01G43/06 , C01D3/02 , C01D15/04 , C01F5/30 , C01F11/22 , C01D3/04 , G21C3/54 , G21C5/18 , G21C19/28
摘要： Some embodiments include a method comprising: flowing a molten salt out of a molten salt reactor at a first temperature, heating the molten salt reactor to a second temperature above the melding point of the second salt mixture causing the second salt mixture to melt; flowing the second salt mixture out of the molten salt reactor; flowing a third salt mixture into the molten salt reactor; and cooling the molten salt reactor from the second temperature to a third temperature causing the third salt mixture to solidify on the interior surface of the housing. In some embodiments, the molten salt may include a first salt mixture comprising at least uranium. In some embodiments, the first temperature is a temperature above the melting point of the first salt mixture.

2. 发明授权

US11270804B2 Fuel assembly design concept and mixed cycle length operation method for long cycle length pressurized water reactor operation 有权
公开(公告)号：US11270804B2
公开(公告)日：2022-03-08
申请号：US16294967
申请日：2019-03-07
申请人： Ulsan National Institute of Science and Technology
发明人： Deokjung Lee , Eun Jeong , Jiwon Choe , Soo Young Choi , Jinsu Park , Jaerim Jang , Peng Zhang
IPC分类号： G21C3/335 , G21C19/19 , G21C1/08 , G21D3/02 , G21C3/334 , G21C3/32 , G21C3/326 , G21C5/18 , G21C1/32
摘要： In a pressurized water reactor operation method, a fuel assembly including first fuel rods that operates for a preset first operation time and second fuel rods that operates for a second operation time longer than the first operation time is prepared. An operation schedule of a pressurized water reactor is created by mixing the first operation time of the first fuel rods and the second operation time of the second fuel rods. The pressurized water reactor operates by repeating the operation schedule.

3. 发明授权

US11264141B2 Composite moderator for nuclear reactor systems 有权
公开(公告)号：US11264141B2
公开(公告)日：2022-03-01
申请号：US16254019
申请日：2019-01-22
申请人： Ultra Safe Nuclear Corporation
发明人： Francesco Venneri , Paolo Francesco Venneri , Lance Lewis Snead
IPC分类号： G21C5/12 , G21C5/18 , G21C3/60
摘要： A composite moderator medium for nuclear reactor systems and a method of fabricating a composite moderator block formed of the composite moderator medium. The composite moderator medium includes two or more moderators, such as a low moderating material and a high moderating material. The high moderating material has a higher neutron slowing down power compared to the low moderating material. The low moderating material includes a moderating matrix of silicon carbide or magnesium oxide. The high moderating material is dispersed within the moderating matrix and includes beryllium, boron, or a compound thereof. The high moderating material is encapsulated within the low moderating material such that the high moderating material is not exposed outside of the low moderating material. The method can include selecting a sintering aid and a weight percent of the sintering aid in a composite moderator mixture based on the low moderating material and spark plasma sintering.

4. 发明申请

US20180322964A1 MOLTEN SALT NUCLEAR REACTOR 审中-公开
公开(公告)号：US20180322964A1
公开(公告)日：2018-11-08
申请号：US15771742
申请日：2016-10-28
申请人： TERRESTRIAL ENERGY INC.
发明人： David LEBLANC
IPC分类号： G21C1/22 , G21C1/03 , G21C3/24 , G21C5/18 , G21C5/12
CPC分类号： G21C1/22 , G21C1/03 , G21C3/24 , G21C5/123 , G21C5/14 , G21C5/18 , Y02E30/40
摘要： A molten salt nuclear reactor a neutron moderator core that has an inner region that defines channels of a first diameter separated by a first pitch and, an outer region that defines channels of a second diameter separated by a second pitch. The first diameter is larger than the second diameter and the first pitch is larger than the second pitch. This configuration allows for an increased capture of neutrons by fertile elements in the outer region. That is, less neutrons are lost to the outside of the core. The configuration is such that the neutron multiplication factor is larger than one in the inner portion and lower than one in the outer portion.

5. 发明申请

US20160260506A1 Nuclear Reactor Core 审中-公开
标题翻译：核反应堆核心
公开(公告)号：US20160260506A1
公开(公告)日：2016-09-08
申请号：US15029140
申请日：2013-10-21
申请人： HITACHI, LTD.
发明人： Takeshi MITSUYASU , Motoo AOYAMA
IPC分类号： G21C5/18 , G21C1/08
CPC分类号： G21C5/18 , G21C1/084 , G21C5/00 , G21D3/001 , G21D3/002 , Y02E30/40
摘要： The initial-core economical efficiency is improved by loading the medium enriched fuel in the peripheral or lacing it adjacent to the low enriched fuel and the highly enriched fuel. According to the present invention, in an initial core of a Boiling Water Reactor loaded with at least three types of fuel including highly enriched fuel with a fission-material content of 3.0 wt % or more, medium enriched fuel with a fission-material content of a range from 1.5 wt % or more to less than 3.0 wt %, and low enriched fuel with a fission-material content of less than 1.5 wt %, when a region of an outermost peripheral of a core occupied by the fuel having no face adjoining another fuel in a horizontal direction is defined as an outermost peripheral region, a region outside a line at 80% of a radius of a circumcircle of the core and except for the outermost peripheral region is defined as a peripheral region and the remainder is defined as an inner region, 50% or more of the fuel loaded in the peripheral region is the medium enriched fuel.
摘要翻译：通过将富含介质的燃料装载在周边或将其附加到低浓度燃料和高浓缩燃料上来提高初始核心经济效率。根据本发明，在装有至少三种类型燃料的沸水反应堆的初始核心中，包括裂变材料含量为3.0wt％或更高的富含高浓度燃料，具有裂变材料含量的富集燃料在1.5重量％以上且小于3.0重量％的范围内，当燃料所占据的核的最外周的区域没有面临相邻时，裂解材料含量小于1.5重量％的低浓度燃料将水平方向上的另一种燃料定义为最外周区域，将芯的外接圆的半径的80％的直线以外的区域除外最外周区域作为周边区域，将余数定义为内部区域，装载在周边区域中的燃料的50％以上是富集燃料的燃料。

6. 发明授权

US5271050A Core construction of a boiling nuclear reaction 失效
标题翻译：核心建设沸腾的核反应
公开(公告)号：US5271050A
公开(公告)日：1993-12-14
申请号：US881296
申请日：1992-05-11
申请人： Mamoru Nagano , Hisao Nogiwa
发明人： Mamoru Nagano , Hisao Nogiwa
IPC分类号： G21C5/00 , G21C5/02 , G21C5/12 , G21C5/18 , G21C7/30
CPC分类号： G21C5/02 , G21Y2002/201 , G21Y2004/40 , Y02E30/40
摘要： A core construction for boiling water nuclear reactor in which a multiplicity of core units each having four fuel assemblies disposed in a square pattern adjacent to a control rod are arranged to form a reactor core, wherein the reactor core comprises control cells comprising four fuel assemblies which have been in the core more than three cyclic periods. The fuel assemblies located in the outer peripheral portion of the core are fuel assemblies which have been in the core more than three cyclic periods. Most of the core units comprise four fuel assemblies of first-, second-, third- or fourth-burning cyclic periods. The core is rotationally symmetric by 90 degrees. The core can be divided into four identical 1/4 cores by two vertical planes passing axial center lines of the core. Each of the 1/4 cores is substantially mirror symmetric about a plane passing the axial center line of the core.
摘要翻译：沸水核反应堆的核心结构，其中布置有多个核心单元，每个核心单元各自具有邻近控制棒的方形图案布置的四个燃料组件，以形成反应堆堆芯，其中反应堆堆芯包括控制单元，其包括四个燃料组件，一直处于核心三个循环期。位于核心的外周部分的燃料组件是燃料组件，它们在核心中超过三个周期。大多数核心单元包括四个第一，第二，第三或第四燃烧循环周期的燃料组件。核心旋转对称90度。芯可以通过穿过芯的轴向中心线的两个垂直平面分成四个相同的1/4核心。 1/4核心中的每一个基本上相对于通过芯的轴向中心线的平面反射对称。

7. 发明授权

US5093070A Core loading strategy 失效
标题翻译：核心加载策略
公开(公告)号：US5093070A
公开(公告)日：1992-03-03
申请号：US448209
申请日：1989-12-08
申请人： Junichi Koyama , Motoo Aoyama , Akinobu Nakajima , Hiromi Maruyama
发明人： Junichi Koyama , Motoo Aoyama , Akinobu Nakajima , Hiromi Maruyama
IPC分类号： G21C5/00 , G21C5/18 , G21C7/00 , G21C19/20
CPC分类号： G21C19/205 , G21C7/00 , G21Y2002/201 , G21Y2004/10 , G21Y2004/40 , Y02E30/31 , Y02E30/39
摘要： A core of boiling water reactor is divided into a central region and a peripheral region surrounding it in the radial direction thereof. The loading fraction of new first fuel assemblies containing burnable poison and loaded in the central region is greater than the loading fraction of the new first fuel assemblies loaded in the peripheral region. The loading fraction of second fuel assemblies loaded in the central region of the core and operating in a second operation cycle is smaller than the loading fraction of the second fuel assemblies loaded in the peripheral region of the core and operating in the second operation cycle. The second fuel assemblies contain no burnable poison. In such a core, the reactivity of the peripheral region is greater than that of the central region in the beginning of an operation cycle. Contrary, the reactivity of the central region is greater than that of the peripheral region in the end of an operation cycle.
摘要翻译：沸水反应器的核心沿径向方向被分为中心区域和围绕它的周边区域。包含可燃毒物并装载在中心区域的新的第一燃料组件的负载分数大于装载在周边区域中的新的第一燃料组件的负载分数。负载在芯的中心区域并在第二操作循环中操作的第二燃料组件的负载分数小于装载在铁芯的周边区域并在第二操作循环中操作的第二燃料组件的负载分数。第二燃料组件不含可燃毒物。在这样的核心中，在操作周期开始时，周边区域的反应性大于中心区域的反应性。相反，在操作周期结束时，中心区域的反应性大于外围区域的反应性。

8. 发明授权

US3432389A Core design for nuclear reactor 失效
标题翻译：核反应堆核心设计
公开(公告)号：US3432389A
公开(公告)日：1969-03-11
申请号：US3432389D
申请日：1966-07-25
申请人： COMBUSTION ENG
发明人： STERN FRED M
IPC分类号： G21C5/18 , G21C19/20 , G21C3/20 , G21C3/04
CPC分类号： G21C19/205 , G21C5/18 , Y02E30/40

9. 发明授权

US3243351A Steam producing reactor and fuel therefor 失效
标题翻译：生产蒸汽的反应器和燃料
公开(公告)号：US3243351A
公开(公告)日：1966-03-29
申请号：US42487964
申请日：1964-12-23
申请人： CAMPBELL KEITH W , PENNINGTON ROBERT T , IMHOFF DONALD H , ROBERTS JOHN M
发明人： CAMPBELL KEITH W , PENNINGTON ROBERT T , IMHOFF DONALD H , ROBERTS JOHN M
IPC分类号： G21C1/08 , G21C3/32 , G21C5/18
CPC分类号： G21C5/18 , G21C1/082 , G21C3/32 , Y02E30/40

10. 发明授权

US11545273B2 Nuclear reactor component having a coating of amorphous chromium carbide 有权
公开(公告)号：US11545273B2
公开(公告)日：2023-01-03
申请号：US17022866
申请日：2020-09-16
申请人： COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
发明人： Frédéric Schuster , Fernando Lomello , Francis Maury , Alexandre Michau , Raphaël Boichot , Michel Pons
IPC分类号： G21C3/20 , G21C3/34 , G21C5/18 , G21C7/10 , G21C3/07 , C23C16/02 , C23C16/04 , C23C16/34 , C23C16/448 , C23C16/56 , G21C3/326 , G21C3/36
摘要： A composite nuclear reactor component comprises a support and a protective layer (2). The support contains a substrate (1) based on a metal. The substrate is coated with an interposed layer (3) positioned between the substrate (1) and the protective layer (2). The protective layer (2) is composed of a material which comprises amorphous chromium carbide. The nuclear reactor component provides for improved resistance to oxidation, hydriding, and/or migration of undesired material.

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