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    Core of Fast Reactor
    1.
    发明公开
    Core of Fast Reactor 审中-公开

    公开(公告)号：US20240013935A1

    公开(公告)日：2024-01-11

    申请号：US18217077

    申请日：2023-06-30

    Applicant: Hitachi-GE Nuclear Energy, Ltd.

    Inventor： Kouji FUJIMURA ,  Junichi MIWA ,  Sho FUCHITA

    IPC: G21C1/02 ,  G21C15/28 ,  G21C3/22

    CPC classification number: G21C1/022 ,  G21C15/28 ,  G21C3/22

    Abstract: There is provided a core of a fast reactor capable of achieving a sodium-cooled metal fuel fast reactor with high adaptability to a molten salt heat storage system, by flattening the output distribution and raising the coolant outlet temperature while suppressing deterioration of the core characteristic. A core of a fast factor is a fuel assembly obtained by densely disposing fuel rods within a wrapper tube, the fuel rod storing, within a cladding tube, hollow fuel in which Pu-enrichment is made to be a predetermined value within a range of 11 to 13 wt %. In the core of a fast factor, a first fuel assembly including a fuel rod with a large hollow diameter of the hollow fuel is loaded on the center side of the core, and a second fuel assembly including a fuel rod with a hollow diameter smaller than the hollow diameter of the hollow fuel of the first fuel assembly is loaded on the circumferential side of the core.

    NUCLEAR REACTOR FUEL INTEGRITY MONITOR
    2.
    发明申请
    NUCLEAR REACTOR FUEL INTEGRITY MONITOR 有权
    核反应堆燃料完整性监测

    公开(公告)号：US20150115157A1

    公开(公告)日：2015-04-30

    申请号：US14520887

    申请日：2014-10-22

    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.

    Inventor： Takao Nishimura ,  Kenichiro Kino

    IPC: G01T1/167 ,  G21C17/06 ,  G01T7/02

    CPC classification number: G01T1/167 ,  G01T7/02 ,  G21C1/022 ,  G21C17/02 ,  G21C17/022 ,  G21C17/06

    Abstract: A nuclear reactor fuel integrity monitor includes: a γ-ray detector which detects γ-ray of a specific radionuclide of a subject measurement medium of a nuclear reactor; a sample container which retains the subject measurement medium therein and surrounds the circumference of the γ-ray detector; and a measurement control device which performs a control so that a predetermined amount of the subject measurement medium is introduced into the sample container and calculates a concentration of the specific radionuclide from γ-ray data per each unit time detected by the γ-ray detector and a volume of the subject measurement medium introduced into the sample container.

    Abstract translation: 核反应堆燃料完整性监视器包括：γ射线检测器，其检测核反应堆的被测量介质的特定放射性核素的γ射线; 样本容器，其将被检测体介质保持在其中并且包围γ射线检测器的周围; 以及测量控制装置，其进行控制，使得将预定量的被摄体测量介质引入到样本容器中，并根据由γ射线检测器检测的每单位时间的γ射线数据计算特定放射性核素的浓度;以及 将被测量介质的体积引入到样品容器中。

    MOLTEN SALT NUCLEAR REACTOR
    3.
    发明申请
    MOLTEN SALT NUCLEAR REACTOR 有权
    MOLTEN SALT核反应堆

    公开(公告)号：US20140023172A1

    公开(公告)日：2014-01-23

    申请号：US14009964

    申请日：2012-04-05

    Applicant: David Leblanc

    Inventor： David Leblanc

    IPC: G21C1/22 ,  G21C5/12

    CPC classification number: G21C1/22 ,  G21C1/022 ,  G21C1/03 ,  G21C3/54 ,  G21C5/12 ,  G21C5/14 ,  G21C5/18 ,  Y02E30/34 ,  Y02E30/35

    Abstract: A Single Fluid Reactor with an inner zone that includes a solid neutron moderator, which can have through holes defined therein. This solid neutron moderator can have a relatively small diameter, which can range, in some embodiments, from less than one meter to about 1.5 meter. The solid neutron moderator effectively creates an inner zone with a neutron profile that is far more thermalized than if the solid neutron moderator were absent. The surrounding layer of salt surrounding this inner zone has a much harder neutron spectrum.

    Abstract translation: 具有内部区域的单个流体反应器，该内部区域包括固体中子慢化剂，其可以具有限定在其中的通孔。 该固体中子减速剂可以具有相对小的直径，在一些实施方案中，其可以在小于1米至约1.5米的范围内。 固体中子调节剂有效地产生了一个具有中子特征的内部区域，其比不含固体中子调节剂时更热化。 围绕该内区的周围的盐层具有比较硬的中子谱。

    Axially staggered seed-blanket reactor fuel module construction
    4.
    发明授权
    Axially staggered seed-blanket reactor fuel module construction 失效
    轴向交错的种子层反应堆燃料模块结构

    公开(公告)号：US4507259A

    公开(公告)日：1985-03-26

    申请号：US437400

    申请日：1982-10-28

    Applicant: Gary K. Cowell ,  Carl P. DiGuiseppe

    Inventor： Gary K. Cowell ,  Carl P. DiGuiseppe

    IPC: G21C1/02 ,  G21C5/20 ,  G21C1/00

    CPC classification number: G21C5/20 ,  G21C1/022 ,  Y02E30/34

    Abstract: A heterogeneous nuclear reactor of the seed-blanket type is provided wher the fissile (seed) and fertile (blanket) nuclear fuels are segregated axially within each fuel element such that fissile and fertile regions occur in an alternating pattern along the length of the fuel element. Further, different axial stacking patterns are used for the fuel elements of at least two module types such that when modules of different types are positioned adjacent to one another, the fertile regions of the modules are offset or staggered. Thus, when a module of one type is surrounded by modules of the second type the fertile regions thereof will be surrounded on all sides by fissile material. This provides enhanced neutron communication both radially and axially, thereby resulting in greater power oscillation stability than other axial arrangements. The arrangements of the fissile and fertile regions in an alternating axial manner minimizes the radial power peaking factors and provides a more optional thermal-hydraulic design than is afforded by radial arrangements.

    Abstract translation: 提供种子毯类型的异质核反应堆，其中易裂变（种子）和可育（核）核燃料）在每个燃料元件内轴向分离，使得裂变和可育区沿着燃料元件的长度以交替模式发生 。 此外，对于至少两种模块类型的燃料元件使用不同的轴向堆叠模式，使得当不同类型的模块彼此相邻放置时，模块的可育区域被偏移或交错。 因此，当一种类型的模块被第二类型的模块包围时，其可育区域将在所有侧面上被裂变材料包围。 这提供了径向和轴向的增强的中子连通，从而导致比其它轴向布置更大的功率振荡稳定性。 以交替轴向方式的裂变和可育区域的布置使径向功率峰值因数最小化，并提供比通过径向布置提供的更可选的热液压设计。

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