公开(公告)号：WO2021223925A1

公开(公告)日：2021-11-11

申请号：PCT/EP2021/056190

申请日：2021-03-11

Applicant: WESTINGHOUSE ELECTRIC SWEDEN AB

Inventor： LIMBÄCK, Magnus ,  WRIGHT, Jonathan ,  DAHLBÄCK, Mats ,  CLAISSE, Antoine

IPC: G21C3/07 ,  C22C16/00 ,  C23C14/06 ,  C23C14/08 ,  C23C14/16 ,  C23C28/00 ,  C23C30/00

Abstract: A cladding tube (11), a fuel rod and a fuel assembly are disclosed. The cladding tube comprises a tubular base component (20) having an outer surface (21) and an inner surface (22) defining 5 an inner space (14) of the cladding tube housing a pile of fuel pellets (10). The tubular base component is made of a Zr-based alloy. A coating (23) is applied onto the outer surface for protecting the tubular base component from mechanical wear, oxidation and hydriding. The Zr-based alloy has the following 10 composition: Zr = balance, Al = 0-2 wt%, Ti = 0-20 wt%, Sn = 0-6 wt%, Fe = 0-0.4 wt%, Nb = 0-0.4 wt%, O = 200-1800 wtppm, C = 0-200 wtppm, Si = 0-200 wtppm, and S = 0-200 wtppm. The total amount of Al+Ti+Sn > 2.5 wt% and ≤ 28 wt%.

公开(公告)号：WO2006004499A1

公开(公告)日：2006-01-12

申请号：PCT/SE2005/001000

申请日：2005-06-22

Applicant: WESTINGHOUSE ELECTRIC SWEDEN AB ,  HALLSTADIUS, Lars ,  DAHLBÄCK, Mats ,  LIMBÄCK, Magnus ,  BATES, John ,  DOUGHERTY, James

Inventor： HALLSTADIUS, Lars ,  DAHLBÄCK, Mats ,  LIMBÄCK, Magnus ,  BATES, John ,  DOUGHERTY, James

IPC: C22F1/18

CPC classification number: G21C21/00 ,  C22C16/00 ,  G21Y2002/103 ,  G21Y2002/104 ,  G21Y2004/10 ,  G21Y2004/20 ,  G21Y2004/40

Abstract: A method for manufacturing a sheet metal (5) for use in a boiling water nuclear reactor and such a sheet metal (5) is described. The method comprises the steps of providing a material of a zirconium alloy which mainly consists of zirconium, and whose main alloying materials comprises niobium. The material is annealed so that essentially all niobium containing secondary phase particles are transformed to β-niobium particles.

Abstract translation: 描述了一种用于沸水核反应堆和这种金属板（5）中使用的金属板（5）的制造方法。 该方法包括提供主要由锆组成的锆合金材料，其主要合金材料包括铌的步骤。 将材料退火，使得基本上将所有含铌的次相颗粒转变成铌 - 铌颗粒。

公开(公告)号：WO2005122183A1

公开(公告)日：2005-12-22

申请号：PCT/SE2005/000833

申请日：2005-06-01

Applicant: WESTINGHOUSE ELECTRIC SWEDEN AB ,  LIMBÄCK, Magnus ,  RYTTERSSON, Kristina ,  HELMERSSON, Sture

Inventor： LIMBÄCK, Magnus ,  RYTTERSSON, Kristina ,  HELMERSSON, Sture

IPC: G21C7/08

CPC classification number: G21C7/08 ,  G21C17/04 ,  G21D3/06 ,  G21Y2002/207 ,  G21Y2002/303 ,  G21Y2004/40 ,  Y02E30/39

Abstract: A reactor (1) of a nuclear plant encloses a core having a plurality of fuel element (7) and a number of control rods (8). 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 of the control rods is insert able to an extractable from a respective position between or in respective fuel elements in the core in order to influence the effect of the reactor. A method for operating the reactor includes the following steps: operating the reactor at a normal effect during a normal state, monitoring the reactor for detecting a defect on the cladding of any one of fuel rods, reducing the effect of the reactor after the detection of such a 15 defect, operating the reactor during a particular state during a limited 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: 核电厂的反应器（1）包围具有多个燃料元件（7）和多个控制棒（8）的芯体。 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。 每个控制棒是可插入的，能够从核心中的相应燃料元件之间的相应位置中提取，以便影响反应器的效果。 用于操作反应器的方法包括以下步骤：在正常状态期间以正常效应操作反应器，监测反应器以检测任何一种燃料棒的包层上的缺陷，降低反应器检测后的影响 这样的15个缺陷，在特定状态期间在反应器至少在部分时间期间以相对于正常效应降低的效果运行的有限时间段内操作反应器，以及在该时间段之后提取插入的控制棒 用于在基本上正常状态下持续运行电抗器。

公开(公告)号：WO2019243095A1

公开(公告)日：2019-12-26

申请号：PCT/EP2019/065061

申请日：2019-06-10

Applicant: WESTINGHOUSE ELECTRIC SWEDEN AB

Inventor： MIDDLEBURGH, Simon Charles ,  PUIDE, Mattias ,  HALLSTADIUS, Lars ,  BLAIR, Paul ,  LIMBÄCK, Magnus

IPC: G21C3/62

Abstract: A uranium oxide fuel pellet (2) comprising an inner region (4) and an outer rim region (6) about the inner region (4), and that the fuel pellet (2) is cylindrical and the inner region (4) and outer rim region (6) are coaxial cylindrical regions.The outer rim region (6) has an excess of oxygen in comparison to the inner region (4), wherein high burnup structure (HBS) formation will be suppressed or delayed. Preferably, the excess oxygen is obtained by a chemical treatment by immersing the pellet in hydrogen peroxide (H 2 O 2 ) or potassium permanganate (KMnO 4 ) in solution.

公开(公告)号：WO2008123832A1

公开(公告)日：2008-10-16

申请号：PCT/SE2008/050400

申请日：2008-04-07

Applicant: WESTINGHOUSE ELECTRIC SWEDEN AB ,  HELMERSSON, Sture ,  LIMBÄCK, Magnus ,  WRIGHT, Jonathan

Inventor： HELMERSSON, Sture ,  LIMBÄCK, Magnus ,  WRIGHT, Jonathan

IPC: G21C17/04 ,  G21C3/17 ,  G21C3/18 ,  G21C7/08 ,  G21C7/32

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，留下一个自由体积，包括上部气室，下部气室和颗粒包层间隙。 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内运行，此后反应器在正常状态下运行。

公开(公告)号：WO2004057624A1

公开(公告)日：2004-07-08

申请号：PCT/SE2003/001902

申请日：2003-12-05

Applicant: WESTINGHOUSE ELECTRIC SWEDEN AB ,  HULTQUIST, Gunnar ,  LIMBÄCK, Magnus ,  TÄGTSTRÖM, Per ,  HÖRNLUND, Erik

Inventor： HULTQUIST, Gunnar ,  LIMBÄCK, Magnus ,  TÄGTSTRÖM, Per ,  HÖRNLUND, Erik

IPC: G21C3/20

CPC classification number: G21C21/02 ,  G21C3/16 ,  G21Y2002/303 ,  G21Y2004/10 ,  G21Y2004/30 ,  G21Y2004/40 ,  Y02E30/40

Abstract: The invention concerns a nuclear fuel rod (1) for a nuclear reactor of the boiling water type or pressurized water type. The nuclear fuel rod comprises a cladding tube (2), that defines a closed inner space (3) and which is manufactured from at least one of the materials in the group zirconium and a zirconium-based alloy, and a pile of nuclear fuel pellets (9) arranged in the inner space in the cladding tube so that the nuclear fuel pellets fill part of the inner space. A fill gas is arranged in the closed inner space in order to fill the rest of the inner space. The internal pressure of the fill gas in the nuclear fuel rod amounts to at least 2 bar (abs) or at least 10 bar (abs). The fill gas contains a proportion of inert gas a proportion of carbon monoxide. The proportion of carbon monoxide is greater than 3 volume per cent of the fill gas or greater than 2 volume per cent of the fill gas.

Abstract translation: 本发明涉及一种用于沸水型或加压水型核反应堆的核燃料棒（1）。 核燃料棒包括一个限定封闭的内部空间（3）的包层管（2），它由锆和锆基合金中的至少一种材料和一堆核燃料颗粒 （9）布置在包层管的内部空间中，使得核燃料颗粒填充内部空间的一部分。 填充气体被布置在封闭的内部空间中以便填充内部空间的其余部分。 核燃料棒中的填充气体的内部压力至少为2巴（abs）或至少10巴（abs）。 填充气体含有一定比例的惰性气体一氧化碳的比例。 一氧化碳的比例大于填充气体的3体积％或大于填充气体的2体积％。