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    Method for Operating a Reactor of a Nuclear Plant
    1.
    发明申请
    Method for Operating a Reactor of a Nuclear Plant 审中-公开
    核电厂反应堆运行方法

    公开(公告)号：US20080025454A1

    公开(公告)日：2008-01-31

    申请号：US11629497

    申请日：2005-06-01

    Applicant: Magnus Limback ,  Kristina Ryttersson ,  Sture Helmersson

    Inventor： Magnus Limback ,  Kristina Ryttersson ,  Sture Helmersson

    IPC: G21C7/08

    CPC classification number: G21C7/08 ,  G21C17/04 ,  G21D3/06 ,  Y02E30/39

    Abstract: A reactor of a nuclear plant encloses a core having a plurality of fuel elements and a number of control rods. Each fuel element includes a plurality of fuel rods each including a cladding and nuclear fuel enclosed in an inner space of the cladding. Each control rod is insertable to and extractable from a respective position between or in respective fuel elements to influence the effect of the reactor. A method for operating the reactor includes operating the reactor at a normal effect during a normal state, monitoring the reactor for detecting a defect on the cladding of any fuel rod, reducing the effect of the reactor after the detection of a defect, operating the reactor during a particular state during a time period during which the reactor at least during a part time is operated at the reduced effect in relation to the normal effect, and extracting the inserted control rods after the time period for continuing operation of the reactor at substantially the normal state.

    Abstract translation: 核电站的反应堆包围具有多个燃料元件和多个控制棒的芯。 每个燃料元件包括多个燃料棒，每个燃料棒包括封装在包层的内部空间中的包层和核燃料。 每个控制杆可插入到相应燃料元件之间或相应燃料元件中的相应位置并且可从其中提取，以影响反应器的效果。 用于操作反应器的方法包括在正常状态下以正常效应操作反应器，监测反应器以检测任何燃料棒的包壳上的缺陷，在检测到缺陷后降低反应器的作用，操作反应器 在特定状态期间，至少在一段时间内反应堆以相对于正常效应降低的效果运行的时间段内，以及在反应器的持续运行的时间段之后提取所插入的控制棒， 正常状态

    Method for operating a reactor of a nuclear plant
    3.
    发明授权
    Method for operating a reactor of a nuclear plant 有权
    操作核电厂反应堆的方法

    公开(公告)号：US08477899B2

    公开(公告)日：2013-07-02

    申请号：US12595572

    申请日：2008-04-07

    Applicant: Sture Lennart Helmersson ,  Nils Magnus Limback ,  Jonathan Michael Wright

    Inventor： Sture Lennart Helmersson ,  Nils Magnus Limback ,  Jonathan Michael Wright

    IPC: G21C17/022 ,  G21C7/08 ,  G21C7/32 ,  G21C17/00 ,  G21C7/00

    CPC classification number: G21D3/06 ,  G21Y2002/50 ,  G21Y2004/40 ,  Y02E30/40

    Abstract: A method of operating a nuclear reactor is disclosed. The reactor (1) encloses a core having a plurality of fuel rods (9). Each fuel rod (9) includes a cladding and fuel pellets of a nuclear fuel. The fuel pellets are arranged in an inner space of the cladding leaving a free volume comprising an upper plenum, a lower plenum and a pellet-cladding gap. The reactor is operated at a normal power and a normal inlet sub-cooling during a normal state. The reactor is monitored for detecting a defect on the cladding of any of the fuel rods. The operation of the reactor is changed to a particular state after detecting such a defect. The particular state permits an increase of the free volume in the defect fuel rod. The reactor is operated at the particular state during a limited time period, after which the reactor is operated at the normal state.

    Abstract translation: 公开了一种操作核反应堆的方法。 反应器（1）包围具有多个燃料棒（9）的芯体。 每个燃料棒（9）包括核燃料的包层和燃料颗粒。 燃料颗粒被布置在包层的内部空间中，留下自由体积，其包括上部增压室，下部增压室和颗粒包层间隙。 在正常状态下，反应器以正常功率和正常的入口副冷却运行。 监测反应器以检测任何燃料棒的包层上的缺陷。 在检测到这样的缺陷之后，反应器的操作变为特定状态。 该特定状态允许增加缺陷燃料棒中的自由体积。 反应器在特定状态下在有限的时间段内运行，此后反应器在正常状态下运行。

    Method, use and device concerning cladding tubes for nuclear fuel and a fuel assembly for a nuclear boiling water reactor
    4.
    发明申请
    Method, use and device concerning cladding tubes for nuclear fuel and a fuel assembly for a nuclear boiling water reactor 有权
    用于核燃料的包覆管和核沸水反应堆的燃料组件的方法，用途和装置

    公开(公告)号：US20050265513A1

    公开(公告)日：2005-12-01

    申请号：US10517020

    申请日：2003-06-04

    Applicant: Mats Dahlback ,  Magnus Limback

    Inventor： Mats Dahlback ,  Magnus Limback

    IPC: C22C16/00 ,  C22F1/00 ,  C22F1/18 ,  G21C3/06 ,  G21C3/07 ,  G21C3/20 ,  G21C21/02 ,  G21C3/32

    CPC classification number: C22F1/186 ,  G21C3/07 ,  G21C3/20 ,  G21C21/02 ,  G21Y2002/104 ,  G21Y2002/303 ,  G21Y2004/10 ,  G21Y2004/20 ,  G21Y2004/40 ,  Y02E30/40

    Abstract: The invention concerns a method of producing a cladding tube for nuclear fuel for a nuclear boiling water reactor. According to the method, a tube is formed which comprises an outer cylindrical component (10) mainly containing zirconium and an inner cylindrical component (20) metallurgically bonded to the outer component (10), wherein also the inner component (20) at least mainly contains zirconium. The inner component (20) has a lower recrystallization temperature than the outer component (10). The cladding tube is final annealed at a temperature and during a time such that the inner component (20) substantially completely recrystallizes and such that the outer component (10) partly recrystallizes but to a lower extent than the inner component (20). The invention also concerns a cladding tube, a fuel assembly for a boiling water reactor as well as the use of a cladding tube.

    Abstract translation: 本发明涉及一种生产用于核沸水反应堆的核燃料包层管的方法。 根据该方法，形成管，其包括主要包含锆的外圆柱形部件（10）和冶金结合到外部部件（10）的内部圆柱形部件（20），其中内部部件（20）至少主要 含锆。 内部部件（20）的再结晶温度比外部部件（10）低。 包壳管在温度和时间内最终退火，使得内部部件（20）基本上完全再结晶，并且使得外部部件（10）部分地再结晶但是比内部部件（20）更低的程度。 本发明还涉及包层管，用于沸水反应器的燃料组件以及包壳管的使用。

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