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    Method for calculating a PCI margin associated with a loading pattern of a nuclear reactor, associated system, computer program and medium
    1.
    发明授权
    Method for calculating a PCI margin associated with a loading pattern of a nuclear reactor, associated system, computer program and medium 有权

    公开(公告)号：US11342088B2

    公开(公告)日：2022-05-24

    申请号：US16312280

    申请日：2017-06-20

    申请人： FRAMATOME

    发明人： Gilles Andre Poyaud ,  Isabelle Galland

    IPC分类号： G21D3/00 ,  G21C3/04 ,  G21C7/00 ,  G21C17/00 ,  G21C19/20

    摘要： A method for calculating a PCI margin associated with a loading pattern of a nuclear reactor including a core into which fuel assemblies are loaded according to the loading pattern is implemented by an electronic system. The fuel assemblies include fuel rods each including fuel pellets of nuclear fuel and a cladding surrounding the pellets. This method includes calculating a reference principal PCI margin for a reference loading pattern of the fuel assemblies in the core; calculating a reference secondary PCI margin for the reference pattern; calculating a modified secondary PCI margin for a modified loading pattern of the fuel assemblies in the core, and calculating a modified principal PCI margin for the modified pattern, depending on a comparison of the modified secondary PCI margin with the reference secondary PCI margin.

    Nuclear power generation system utilizing thermal expansion in metallic members to move a neutron reflector
    2.
    发明授权
    Nuclear power generation system utilizing thermal expansion in metallic members to move a neutron reflector 有权

    公开(公告)号：US10522259B2

    公开(公告)日：2019-12-31

    申请号：US15329646

    申请日：2016-01-25

    申请人： CLEAR INC.

    发明人： Osao Sumita ,  Isao Ueno ,  Takehiko Yokomine

    IPC分类号： G21C7/10 ,  G21D3/12 ,  G21C1/02 ,  G21C7/02 ,  G21C7/28 ,  G21C1/06 ,  G21C11/06 ,  G21D3/16 ,  G21C7/00 ,  G21D3/08

    摘要： A nuclear power generation system being safe and easily controlled by load following. The nuclear power generation system has a nuclear reactor employing a load following control method. The reactor includes: a fuel assembly reactor core having metallic fuel containing at least one selected from uranium-235, uranium-238 and plutonium-239; a reactor vessel containing the reactor core; metallic sodium loaded into the reactor vessel and heated by the reactor core; and a neutron reflector for achieving criticality in the reactor core with effective multiplication factor of neutrons emitted from the reactor core being maintained at or above about 1. The neutron reflector is coupled to spring or spiral metallic members and utilizing heat deformation in the metallic members due to the temperature in coolant metallic sodium to control the fast neutron reflection efficiency of the neutron reflector.

    DIELECTRIC WALL ACCELERATOR AND APPLICATIONS AND METHODS OF USE
    5.
    发明申请
    DIELECTRIC WALL ACCELERATOR AND APPLICATIONS AND METHODS OF USE 审中-公开
    电介质壁加速器及其应用及使用方法

    公开(公告)号：US20160293279A1

    公开(公告)日：2016-10-06

    申请号：US15037437

    申请日：2014-11-21

    申请人： Martin A. Stuart

    发明人： Martin A. Stuart

    IPC分类号： G21C1/02 ,  G21C7/00 ,  G21C7/36 ,  G21H1/04

    摘要： Provided are a plurality of embodiments, including, but not limited to, a device for generating efficient low and high average power output Gamma Rays via relativistic particle bombardment of element targets using an efficient particle injector and accelerator at low and high average power levels suitable for element transmutation and power generation with an option for efficient remediation of radioisotope release into any environment. The devices utilize diamond or diamond-like carbon materials and active cooling for improved performance. Also provided are a nuclear reactor and a decontamination device using such a device.

    摘要翻译： 提供了多个实施例，包括但不限于用于通过使用有效的粒子注入器和加速器的相对论粒子轰击来产生有效的低和高平均功率输出伽马射线的装置，其具有适于 元素蜕变和发电，具有有效修复放射性同位素释放到任何环境中的选择。 该设备使用金刚石或类金刚石碳材料和主动冷却来改善性能。 还提供了使用这种装置的核反应堆和净化装置。

    A FUEL ASSEMBLY FOR A NUCLEAR REACTOR
    6.
    发明申请
    A FUEL ASSEMBLY FOR A NUCLEAR REACTOR 审中-公开
    核反应堆燃料组件

    公开(公告)号：US20160284428A1

    公开(公告)日：2016-09-29

    申请号：US15032808

    申请日：2014-10-30

    申请人： THOR ENERGY AS

    发明人： Klara Insulander Björk ,  Sture Helmersson

    IPC分类号： G21C3/326 ,  G21C7/00 ,  G21C3/58 ,  G21C3/62 ,  G21C3/16 ,  G21C3/328

    CPC分类号： G21C3/326 ,  G21C3/045 ,  G21C3/16 ,  G21C3/328 ,  G21C3/58 ,  G21C3/62 ,  G21C7/005 ,  Y02E30/38 ,  Y02E30/39

    摘要： A fuel assembly for a nuclear reactor includes a bundle of fuel rods with a first group of fuel rods and a second group of fuel rods. Each fuel rod includes a cladding tube and stack of fuel pellets enclosed within the cladding tube. At least a main portion of the fuel stack includes a fissile nuclear material comprising Plutonium and Thorium, and is arranged with an axial hole. Said main portion of the fuel stack of each fuel rod of the first group includes a first axial hole constituting a first volume and said main portion of the fuel stack of each fuel rod of the second group includes a second axial hole constituting a second volume. The first volume and the second volume are different.

    摘要翻译： 用于核反应堆的燃料组件包括具有第一组燃料棒和第二组燃料棒的一组燃料棒。 每个燃料棒包括包层管和包封在包壳管内的一堆燃料颗粒。 燃料堆的至少主要部分包括包含钚和钍的易裂变核材料，并且设置有轴向孔。 所述第一组的每个燃料棒的所述燃料组的所述主要部分包括构成第一容积的第一轴向孔，并且所述第二组的每个燃料棒的所述燃料组的所述主要部分包括构成第二容积的第二轴向孔。 第一卷和第二卷不同。

    Method and system for designing a nuclear reactor core for uprated power operations
    8.
    发明授权
    Method and system for designing a nuclear reactor core for uprated power operations 有权
    用于设计用于升级电力运行的核反应堆堆芯的方法和系统

    公开(公告)号：US09047995B2

    公开(公告)日：2015-06-02

    申请号：US11585965

    申请日：2006-10-25

    申请人： David Joseph Kropaczek ,  William Earl Russell, II

    发明人： David Joseph Kropaczek ,  William Earl Russell, II

    IPC分类号： G21C19/19 ,  G21D3/00 ,  G21C5/02 ,  G21C7/00

    CPC分类号： G21D3/001 ,  G21C5/02 ,  G21C7/00 ,  G21Y2002/201 ,  G21Y2002/304 ,  G21Y2004/30 ,  G21Y2004/40 ,  Y02E30/39

    摘要： In a method of designing a nuclear reactor core for uprated power operations, a set of constraints are inputted to be satisfied for uprated power operations, and a test reactor core design is generated based on the constraints. One or more automated tools may be selected from a set of automated tools to evaluate the test core design against the constraints. The selected tool may then be operated. Operation of the selected automated tool includes simulating reactor operation with the test core design, based on the constraints, to produce a plurality of outputs, comparing the outputs against the constraints, and providing data indicating constraints that were violated by the test core design during the simulation, based on the comparison. One or more of the automated tools are iterated until a test core design meets all constraints for uprated power operations, thereby representing an acceptable power uprate core design.

    摘要翻译： 在设计用于上升功率操作的核反应堆堆芯的方法中，输入一组约束以满足上升功率操作，并且基于约束产生测试反应堆堆芯设计。 可以从一组自动化工具中选择一个或多个自动化工具，以根据约束来评估测试核心设计。 然后可以操作所选择的工具。 所选择的自动化工具的操作包括基于约束来模拟具有测试核心设计的反应堆操作，以产生多个输出，将输出与约束进行比较，以及提供指示在测试核心设计期间违反的约束的数据 仿真，基于比较。 一个或多个自动化工具被迭代，直到测试核心设计满足上升功率操作的所有约束，从而表示可接受的上电核心设计。

    Radiation exposure reduction method
    10.
    发明授权
    Radiation exposure reduction method 有权
    辐射曝光减少法

    公开(公告)号：US08798225B2

    公开(公告)日：2014-08-05

    申请号：US13127503

    申请日：2009-11-04

    申请人： Yumi Yaita ,  Seiji Yamamoto ,  Hajime Hirasawa ,  Yutaka Uruma

    发明人： Yumi Yaita ,  Seiji Yamamoto ,  Hajime Hirasawa ,  Yutaka Uruma

    IPC分类号： G21C19/30 ,  G21C7/06 ,  G21C19/00 ,  G21C7/00

    CPC分类号： G21F1/106 ,  G21C19/307 ,  G21D3/08 ,  Y02E30/40

    摘要： A radiation exposure reduction method includes the steps of: injecting iron into a coolant which flows from the reactor cooling system to the reactor core in a nuclear power plant; and ferritizing and fixing radionuclides or parent nuclides thereof, which are contained in the coolant, on the surface of a reactor core structure, wherein an iron citrate which is soluble organic iron, or iron oxalate or iron fumarate which has a particle diameter of 3 μm or less, is used as the iron to be injected into the coolant.

    摘要翻译： 放射线曝光降低方法包括以下步骤：将铁注入从反应堆冷却系统流到核电站中的反应堆堆芯的冷却剂中; 并且将包含在冷却剂中的放射性核素或其母体核素铁氧化并固定在反应堆芯结构的表面上，其中可溶性有机铁的柠檬酸铁或草酸铁或富马酸铁具有3μm的粒径 或更少，被用作要注入冷却剂的铁。