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1. 发明授权

US10573417B2 Method for guaranteeing fast reactor core subcriticality under conditions of uncertainty regarding the neutron-physical characteristics thereof 有权
公开(公告)号：US10573417B2
公开(公告)日：2020-02-25
申请号：US15022689
申请日：2014-03-19
申请人： Joint Stock Company “AKME-Engineering”
发明人： Kirill Gennadievich Melnikov , Ivan Vladimirovich Tormyshev , Said Mirfaisovich Sharikpulov , Sergey Viktorovich Bulavkin , Aleksandr Ivanovich Filin , Stepan Artemovich Borovitsky
IPC分类号： G21C7/06 , G21C7/08 , G21C9/02 , G21C11/06 , G21C21/18 , G21C11/00
摘要： A method for guaranteeing fast reactor core subcriticality under conditions of uncertainty involves, after assembling the reactor core, conducting physical measurements of reactor core subcriticality and comparing the obtained characteristics with design values; then, if there is a discrepancy between the values of the obtained characteristics and the design values, installing adjustable reactivity rods in the reactor at the level of a fuel portion of the reactor core, wherein the level of boron-B10 isotope enrichment of the adjustable reactivity rods is selected to be higher than the level of boron-B10 isotope enrichment of compensating rods of the reactor core. The technical result consists in improving the operating conditions of absorbing elements of a compensating group of rods, eliminating the need for increasing the movement thereof, simplifying monitoring technologies used during production, and simplifying the algorithm for safe reactor control.

2. 发明授权

US10311983B2 Automatic hydropneumatic actuation device 有权
公开(公告)号：US10311983B2
公开(公告)日：2019-06-04
申请号：US14985977
申请日：2015-12-31
申请人： TerraPower, LLC
发明人： Jesse R. Cheatham, III , Robert A. Corbin , Pavel Hejzlar , Christopher J. Johns , Jon D. McWhirter , Jason Brian Meng , P. Harley Park , Robert C. Petroski
IPC分类号： G21C7/16 , G21C7/32 , G21C21/18 , G21C15/243 , G21C7/12 , G21C7/20 , G21C9/027
摘要： A control assembly for a nuclear reactor having a pump includes a duct having an inner volume and defining a coolant flow path, a plug fixed to the duct, a rod disposed within the inner volume and having a rod end that is configured to engage a neutron modifying material, a first piston disposed within the inner volume, slidably coupled to the duct, and coupled to the rod, and a biasing member coupled to the rod and the first piston. The biasing member is positioned to apply a biasing force that repositions the first piston, the rod, and the neutron modifying material in response to a loss of pump flow without scram condition.

3. 发明授权

US09340845B2 Method for surface processing a zirconium or hafnium alloy, and component processed in this manner 有权
标题翻译：用于表面处理锆或铪合金的方法，以及以这种方式处理的部件
公开(公告)号：US09340845B2
公开(公告)日：2016-05-17
申请号：US12809997
申请日：2008-12-15
申请人： Dominique Hertz
发明人： Dominique Hertz
IPC分类号： C21D10/00 , C22C16/00 , C21D7/06 , C22F1/00 , G21C3/20 , G21C7/10 , G21C21/02 , G21C21/18 , C22C28/00
CPC分类号： C21D7/06 , C21D10/005 , C22C16/00 , C22F1/00 , G21C3/20 , G21C7/10 , G21C21/02 , G21C21/18 , G21Y2002/103 , G21Y2004/40 , Y02E30/39
摘要： A method for surface processing at least a portion of a component of zirconium or hafnium alloy, including at least one operation of nanostructuring a surface layer of the alloy so as to confer on the alloy over a thickness of at least 5 μm a grain size which is less than or equal to 100 nm, the nanostructuring being carried out at a temperature which is less than or equal to that of the last thermal processing operation to which the component was previously subjected during its production.Component of zirconium or hafnium alloy processed in this manner.
摘要翻译：一种表面处理锆或铪合金的组分的至少一部分的方法，包括至少一种使合金的表面层纳米结构化的操作，以使合金的厚度至少为5μm，晶粒尺寸为小于或等于100nm，纳米结构在小于或等于组件在其生产过程中所经受的最后热处理操作的温度下进行。以这种方式处理的锆或铪合金的组分。

4. 发明授权

US6028906A Manufacturing method of control rod for boiling water reactor 失效
标题翻译：沸水反应堆控制棒的制造方法
公开(公告)号：US6028906A
公开(公告)日：2000-02-22
申请号：US134817
申请日：1998-08-17
申请人： Norio Kawashima , Yasuyuki Gotoh , Akira Koizumi , Kouichi Machida , Yoshiharu Kikuchi , Takayoshi Yasuda , Yoshitaka Nishino
发明人： Norio Kawashima , Yasuyuki Gotoh , Akira Koizumi , Kouichi Machida , Yoshiharu Kikuchi , Takayoshi Yasuda , Yoshitaka Nishino
IPC分类号： G21C21/18 , G21C7/10 , G21C7/113
CPC分类号： G21C7/113 , Y02E30/31 , Y02E30/39
摘要： The present invention relates to a control rod installed in a boiling water reactor (BWR), and particularly to a control rod using metal. An object of the present invention is to provide a manufacturing method of a control rod for a boiling water reactor, having excellent corrosion resistance in high temperature water and excellent wear resistance at the time of fabrication, and in which the influence of the manufacturing process is slight. In order to achieve the above described object, the present invention provides a manufacturing method of a control rod for a boiling water reactor constructed with sheaths having a U-shaped cross section attached to each end of a tie rod having a cruciform cross section, and rod, plate or oval tube cross section metal hafnium type neutron absorber material contained inside the sheaths, in which an anodized film is provided on a surface of the neutron absorber material as a pre-process of assembly of the neutron absorber material in the structure of the control rod.
摘要翻译：本发明涉及安装在沸水反应器（BWR）中的控制棒，特别涉及一种使用金属的控制棒。本发明的目的是提供一种用于沸水反应器的控制棒的制造方法，其在高温水中具有优异的耐腐蚀性，并且在制造时具有优异的耐磨性，并且其中制造过程的影响是轻微。为了实现上述目的，本发明提供了一种用于沸水反应器的控制棒的制造方法，该沸水反应器的控制棒由具有连接到具有十字形截面的拉杆的每个端部的具有U形横截面的护套构成，以及杆，板或椭圆管截面金属铪型中子吸收体材料，其包含在护套内部，其中阳极化膜设置在中子吸收体材料的表面上，作为中子吸收体材料在结构中的组装的预处理控制杆。

5. 依法登记的发明

USH897H Boron-copper neutron absorbing material and method of preparation 失效
标题翻译：硼铜中子吸收材料及其制备方法
公开(公告)号：USH897H
公开(公告)日：1991-03-05
申请号：US406006
申请日：1989-09-12
申请人： Thomas C. Wiencek , Robert F. Domagala , Henry Thresh
发明人： Thomas C. Wiencek , Robert F. Domagala , Henry Thresh
IPC分类号： G21C21/18 , G21F1/08 , G21K1/10
CPC分类号： G21K1/10 , G21C21/18 , G21F1/08
摘要： A composite, copper clad neutron absorbing material is comprised of copper powder and boron powder enriched with boron 10. The boron 10 content can reach over 30 percent by volume, permitting a very high level of neutron absorption. The copper clad product is also capable of being reduced to a thickness of 0.05 to 0.06 inches and curved to a radius of 2 to 3 inches, and can resist temperatures of 900.degree. C. A method of preparing the material includes the steps of compacting a boron-copper powder mixture and placing it in a copper cladding, restraining the clad assembly in a steel frame while it is hot rolled at 900.degree. C. with cross rolling, and removing the steel frame and further rolling the clad assembly at 650.degree. C. An additional sheet of copper can be soldered onto the clad assembly so that the finished sheet can be cold formed into curved shapes.

6. 发明授权

US4647405A Boride-alumina composite 失效
标题翻译：硼化铝 - 氧化铝复合材料
公开(公告)号：US4647405A
公开(公告)日：1987-03-03
申请号：US529303
申请日：1983-09-03
申请人： Pierre E. Debely
发明人： Pierre E. Debely
IPC分类号： C04B35/111 , C04B35/58 , C04B35/65 , C25C3/08 , G21C21/18 , C04B35/10
CPC分类号： C04B35/117 , C04B35/645 , C04B35/651 , C25C3/08 , G21C21/18
摘要： A dense essentially non-porous composite ceramic material of a diboride of group IVa metal, preferably titanium, and alumina in a 3:5 mole ratio has a macroscopically uniform structure made up of non-uniformly dispersed agglomerates of alumina of random shapes and dimensions and a fibrous sponge-like electrically conductive structure of submicronic grains of the group IVa metal boride in intimate wetting contact with the alumina agglomerates. The material is made by reaction hot pressing of coarse grain precursor powders.
摘要翻译： Ⅳa族金属的二硼化物，优选为钛，氧化铝为3：5摩尔比的致密的基本上无孔的复合陶瓷材料具有由不均匀分散的随机形状和尺寸的氧化铝附聚物组成的宏观均匀结构，第Ⅳa族金属硼化物的亚微米晶粒的纤维状海绵状导电结构与氧化铝附聚物紧密地润湿接触。该材料通过粗粒前驱体粉末的反应热压制成。

7. 发明授权

US4566989A Burnable neutron absorbers 失效
标题翻译：可燃中子吸收剂
公开(公告)号：US4566989A
公开(公告)日：1986-01-28
申请号：US352731
申请日：1982-02-26
申请人： Kenneth C. Radford , William G. Carlson
发明人： Kenneth C. Radford , William G. Carlson
IPC分类号： C04B35/10 , C04B35/111 , C04B35/51 , G21C7/04 , G21C7/24 , G21C21/18
CPC分类号： C04B35/111 , G21C21/18
摘要： A neutron-absorber body for use in burnable poison rods in a nuclear reactor. The body is composed of a matrix of Al.sub.2 O.sub.3 containing B.sub.4 C, the neutron absorber. Areas of high density polycrystalline Al.sub.2 O.sub.3 particles are predominantly encircled by pores in some of which there are B.sub.4 C particles. This body is produced by initially spray drying a slurry of Al.sub.2 O.sub.3 powder to which a binder has been added. The powder of agglomerated spheres of the Al.sub.2 O.sub.3 with the binder are dry mixed with B.sub.4 C powder. The mixed powder is formed into a green body by isostatic pressure and the green body is sintered. The sintered body is processed to form the neutron-absorber body. In this case the B.sub.4 C particles are separate from the spheres resulting from the spray drying instead of being embedded in the sphere.
摘要翻译：用于核反应堆中的可燃毒物棒的中子吸收体。身体由含有B4C，中子吸收剂的Al2O3基体组成。高密度多晶Al2O3颗粒的区域主要被孔隙包围，其中一些有B4C颗粒。该主体通过首先喷雾干燥已经加入粘合剂的Al 2 O 3粉末的浆料来生产。将具有粘合剂的Al 2 O 3的团聚球的粉末与B4C粉末干混。混合粉末通过等静压力形成生坯，并将生坯烧结。将烧结体加工成中子吸收体。在这种情况下，B4C颗粒与喷雾干燥而不是嵌入球体中的球体分开。

8. 发明授权

US3985514A Hot rolled composite billet for nuclear control rods 失效
标题翻译：用于核控制棒的热轧复合坯料
公开(公告)号：US3985514A
公开(公告)日：1976-10-12
申请号：US572239
申请日：1975-04-28
申请人： Gary E. Miller
发明人： Gary E. Miller
IPC分类号： B21B3/02 , C21D1/68 , C21D8/02 , G21C21/18 , B32B15/18
CPC分类号： B21B3/02 , C21D1/68 , C21D8/0205 , G21C21/18 , Y10T428/12972
摘要： This invention relates to a composite plate shaped billet, useful in the fabrication of nuclear control rods, which comprises a core of stainless steel containing about 2% Boron 10, a thin coating of zirconia on the surfaces of said core, said core and said zirconia coating being completely encased in a jacket of mild steel, said composite having been hot rolled between about 1075.degree. and about 1165.degree.C.
摘要翻译：本发明涉及一种可用于制造核控制棒的复合板状坯料，其包括含有约2％硼10的不锈钢芯，所述芯表面上的氧化锆薄层，所述芯和所述氧化锆涂层完全包裹在软钢外套中，所述复合材料已经在约1075℃和约1165℃之间热轧。

9. 发明授权

US3898309A Method of forming high density oxide pellets by hot pressing at 50{20 {14 100{20 C above the cubic to monoclinic phase transformation temperature 失效
标题翻译：通过热压制备高密度氧化物粒料的方法为：50 {20 {14×100 {20℃以上立方晶相转变为单斜相变温度
公开(公告)号：US3898309A
公开(公告)日：1975-08-05
申请号：US35939773
申请日：1973-05-11
申请人： US ENERGY
发明人： PASTO ARVID E
IPC分类号： C04B35/50 , C04B35/51 , C04B35/645 , G21C21/18 , G21C21/00
CPC分类号： C04B35/645 , C04B35/50 , C04B35/51 , G21C21/18
摘要： A process for low temperature sintering of rare earth and actinide oxides which have a cubic to monoclinic transformation by heating a powder compact at a temperature just above the transformation temperature.
摘要翻译：一种低温烧结稀土和锕系氧化物的方法，其通过在高于转变温度的温度下加热粉末压块而具有立方到单斜相变。

10. 发明授权

US3652745A Method of fabricating porous metal bodies 失效
标题翻译：制造多孔金属体的方法
公开(公告)号：US3652745A
公开(公告)日：1972-03-28
申请号：US3652745D
申请日：1969-07-30
申请人： ISOTOPES INC
发明人： STRAZZA NEAL P
IPC分类号： B22F3/11 , G21C5/12 , G21C21/18 , G21C21/00 , G21C21/02
CPC分类号： G21C21/18 , B22F3/1143 , G21C5/12 , Y02E30/40
摘要： IN THE FABRICATION OF POROUS METAL BODIES, AND IN PARTICULAR, CONTROL BODIES FOR NUCLEAR REACTORS WITH OR WITHOUT INTEGRAL FUEL MATERIAL, BY POWDER METALLURGICAL TECHNIQUES, THE UTILIZATION OF A METAL HYDRIDE BINDER IMPARTS GREEN STRENGTH OT THE BODY FORMED PRIOR TO SINTERING AND RESULTS IN A SINTERED BODY WITH SMOOTH, STRONG BONDS CONNECTING THE POWDER PARTICLES AND WITH CLEAN, UNCONTAMINATED INTERIOR SURFACES.

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