公开(公告)号：US08537962B1

公开(公告)日：2013-09-17

申请号：US12028119

申请日：2008-02-08

Applicant: Keith J. Drudy ,  William R. Carlson ,  Michael E. Conner ,  Mark Goldenfield ,  Michael J. Hone ,  Carroll J. Long, Jr. ,  Jerod Parkinson ,  Radu O. Pomirleanu

Inventor： Keith J. Drudy ,  William R. Carlson ,  Michael E. Conner ,  Mark Goldenfield ,  Michael J. Hone ,  Carroll J. Long, Jr. ,  Jerod Parkinson ,  Radu O. Pomirleanu

IPC: G21C7/08 ,  G21C7/10 ,  G21C7/103

CPC classification number: G21C7/10 ,  G21Y2002/201 ,  G21Y2002/304 ,  G21Y2004/10 ,  G21Y2004/30 ,  Y02E30/39

Abstract: An advanced gray rod control assembly (GRCA) for a nuclear reactor. The GRCA provides controlled insertion of gray rod assemblies into the reactor, thereby controlling the rate of power produced by the reactor and providing reactivity control at full power. Each gray rod assembly includes an elongated tubular member, a primary neutron-absorber disposed within the tubular member said neutron-absorber comprising an absorber material, preferably tungsten, having a 2200 m/s neutron absorption microscopic capture cross-section of from 10 to 30 barns. An internal support tube can be positioned between the primary absorber and the tubular member as a secondary absorber to enhance neutron absorption, absorber depletion, assembly weight, and assembly heat transfer characteristics.

Abstract translation: 用于核反应堆的先进的灰棒控制组件（GRCA）。 GRCA提供将灰棒组件控制插入反应器，从而控制由反应器产生的功率的速率并在全功率下提供反应性控制。 每个灰色杆组件包括细长管状构件，设置在管状构件内的初级中子吸收器，所述中子吸收器包括吸收材料，优选为钨，具有10至30的2200m / s中子吸收微观捕获横截面 谷仓 内部支撑管可以位于主吸收器和管状构件之间，作为二次吸收器，以增强中子吸收，吸收剂消耗，组装重量和组装传热特性。

公开(公告)号：US20120099691A1

公开(公告)日：2012-04-26

申请号：US12909252

申请日：2010-10-21

Applicant: Scott J. Shargots ,  Mathew W. Ales

Inventor： Scott J. Shargots ,  Mathew W. Ales

IPC: G21C7/08 ,  G21C7/117

CPC classification number: G21C7/08 ,  G21C7/117 ,  G21C7/12 ,  G21C21/18 ,  G21Y2002/104 ,  Y02E30/39

Abstract: A control rod guide frame comprises a self supporting stack of two or more columnar elements defining a central passage. The columnar elements may include mating features that mate at abutments between adjacent columnar elements of the stack. The control rod guide frame is suitably used in conjunction with a control rod drive mechanism (CRDM) operatively connected with at least one control rod, and a nuclear reactor core, in which the CRDM moves the at least one control rod into and out of the nuclear reactor core under guidance of the control rod guide frame. In another embodiment, a control rod guide frame comprises a stack of two or more columnar elements defining a central passage having a constant cross-section as a function of position along the central passage. In another embodiment, a control rod guide frame comprises an extruded columnar element providing continuous control rod guidance.

Abstract translation: 控制杆引导框架包括限定中心通道的两个或更多个柱状元件的自支撑叠层。 柱状元件可以包括在堆叠的相邻柱状元件之间的邻接处配合的配合特征。 控制杆引导框架适用于与至少一个控制杆操作连接的控制杆驱动机构（CRDM）和核反应堆堆芯，其中，CRDM将至少一个控制杆移入和移出 核反应堆核心在控制杆引导架的引导下。 在另一个实施例中，控制杆引导框架包括两个或更多个柱状元件的堆叠，所述柱状元件限定具有作为沿着中心通道的位置的函数的恒定横截面的中心通道。 在另一个实施例中，控制杆引导框架包括提供连续控制杆引导的挤压柱状元件。

公开(公告)号：US20110064182A1

公开(公告)日：2011-03-17

申请号：US12871244

申请日：2010-08-30

Applicant: Norio KAWASHIMA ,  Hirofumi Oizumi ,  Satoru Aoike

Inventor： Norio KAWASHIMA ,  Hirofumi Oizumi ,  Satoru Aoike

IPC: G21C7/08

CPC classification number: G21C7/113 ,  Y02E30/31 ,  Y02E30/39

Abstract: A control rod for a boiling water reactor is provided with a structure element having mutually-perpendicular four blades. The four blades have a neutron absorber-filling region that neutron absorber is held, respectively. In the structure element, a plurality of regions formed in an axial direction of the control rod include a first region having a first cross-section that forms a first united cruciform cross-section of the four blades connected one another, a second region having a second cross-section that has each separated cross-section of the four blades, and a third region having a third cross-section that has a second united cross-section of continuous two blades of the four blades, disposed in a diametrically opposite direction and facing each other and each separated cross-section of remaining two blades of the four blades, disposed perpendicularly to the continuous two blades. The first region is disposed in an upper end portion and a lower end portion of the structure element, respectively. The third region is disposed between the first regions. The second regions are disposed between the first regions exclusive of the third region.

Abstract translation: 用于沸水反应器的控制杆设置有具有相互垂直的四个叶片的结构元件。 四个叶片具有分别保持中子吸收体的中子吸收体填充区域。 在结构元件中，沿控制杆的轴向形成的多个区域包括具有形成彼此连接的四个刀片的第一联合十字形截面的第一横截面的第一区域，具有第二区域的第二区域， 具有四个叶片的每个分离的横截面的第二横截面，以及具有第三横截面的第三区域，该第三横截面具有沿直径相反的方向设置的四个叶片的连续的两个叶片的第二联合横截面， 面对彼此并且四个叶片中剩余的两个叶片的每个分开的横截面垂直于连续的两个叶片设置。 第一区域分别设置在结构元件的上端部和下端部。 第三区域设置在第一区域之间。 第二区域设置在不包括第三区域的第一区域之间。

公开(公告)号：US20100111242A1

公开(公告)日：2010-05-06

申请号：US12595572

申请日：2008-04-07

Applicant: Sture Helmersson ,  Magnus Limbäck ,  Jonathan Wright

Inventor： Sture Helmersson ,  Magnus Limbäck ,  Jonathan Wright

IPC: G21C7/32 ,  G21C7/08

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，反应器以正常功率运行，正常进气冷却。 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。

公开(公告)号：US20090067564A1

公开(公告)日：2009-03-12

申请号：US11850707

申请日：2007-09-06

Applicant: Veronica Salazar ,  James Burner ,  Mark W. Broaddus

Inventor： Veronica Salazar ,  James Burner ,  Mark W. Broaddus

IPC: G21C7/08

CPC classification number: G21C19/10 ,  G21C19/207 ,  G21Y2002/202 ,  G21Y2002/301 ,  G21Y2002/303 ,  G21Y2002/402 ,  G21Y2004/30 ,  G21Y2004/501 ,  G21Y2004/504

Abstract: A system for exchanging a control rod drive of a nuclear reactor is provided. The system may include an integrated drive exchange assembly system (IDEAS). The IDEAS may include a trunnion cart attached to a tower assembly. The tower assembly may include an integrated extension carriage assembly.The IDEAS may also include a control rod drive adapter; and a lead cart connected to the trunnion cart assembly.

Abstract translation: 提供了用于更换核反应堆的控制棒驱动的系统。 该系统可以包括集成的驱动器交换装配系统（IDEAS）。 IDEAS可以包括连接到塔组件的耳轴车。 塔组件可以包括集成的延伸支架组件。 IDEAS还可以包括控制杆驱动适配器; 和连接到耳轴车组件的引导车。

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

公开(公告)号：US5949838A

公开(公告)日：1999-09-07

申请号：US32246

申请日：1998-02-27

Applicant: Dietrich Alter ,  Peter Dewes ,  Friedrich Garzarolli ,  Roland Hahn ,  J. Lawrence Nelson

Inventor： Dietrich Alter ,  Peter Dewes ,  Friedrich Garzarolli ,  Roland Hahn ,  J. Lawrence Nelson

IPC: C21D6/00 ,  C22C38/48 ,  G21C3/06 ,  G21C7/08

CPC classification number: C21D6/004 ,  C22C38/48 ,  G21C3/06 ,  G21C7/08 ,  G21Y2002/104 ,  G21Y2004/10 ,  Y02E30/39 ,  Y10S376/90

Abstract: A method of producing austenite steel for use in the radiation zone of a nuclear reactor. The method comprising the steps of forming the austenite steel with about 17% by weight chromium, about 9 to 11.5% by weight nickel, about 0.04% by weight carbon, and iron impurities whose content of silicon is about 0.1% by weight and whose total content of sulfur and phosphorous is less than 0.03% by weight; and exposing the austenite steel to a temperature treatment at a temperature less than 1150 .degree. C. to produce a fine grain lattice with grain diameter features under approximately 20 .mu.m.

Abstract translation: 一种生产用于核反应堆辐射区的奥氏体钢的方法。 该方法包括以下步骤：形成约17重量％的铬，约9至11.5重量％的镍，约0.04重量％的碳，以及含硅量为约0.1重量％的铁杂质，其总量 硫和磷的含量小于0.03重量％; 并在低于1150℃的温度下将奥氏体钢暴露于温度处理，以产生晶粒直径小于约20μm的细晶格。

公开(公告)号：US5544205A

公开(公告)日：1996-08-06

申请号：US347074

申请日：1994-11-23

Applicant: Jean P. Cartry

Inventor： Jean P. Cartry

IPC: G21C17/003 ,  G21C7/08 ,  G21C17/00 ,  G21C17/10

CPC classification number: G21C7/08 ,  G21C17/00 ,  G21Y2002/204 ,  G21Y2002/301 ,  G21Y2002/303 ,  G21Y2004/30 ,  Y02E30/32 ,  Y02E30/39

Abstract: The device includes an inspection rod cluster (10) comprising a central cylindrical body (45) and a plurality of arms (46, 48) extending radially with respect to the cylindrical body (45). Guide bars (49) for the inspection rod cluster (10) in the guide elements of the guide tube may be fixed to the end of at least two arms (48), opposite the cylindrical body (45), and rotary inspection probes (47) may be fixed to the end of the other arms (46). Preferably, the probes (47) are probes for remote optical measurements by the ladar method.

Abstract translation: 该装置包括一个包括中心圆柱体（45）和相对于圆柱体（45）径向延伸的多个臂（46,48）的检查棒组（10）。 引导管的引导元件中的检查棒簇（10）的引导杆（49）可以固定到与圆柱体（45）相对的至少两个臂（48）的端部，以及旋转检查探针（47） ）可以固定到其他臂（46）的末端。 优选地，探针（47）是通过拉达方法进行远程光学测量的探针。

公开(公告)号：US5297174A

公开(公告)日：1994-03-22

申请号：US67280

申请日：1993-05-26

Applicant: Albert J. Impink, Jr. ,  Michael D. Heibel ,  Toshio Morita ,  Raymond Calvo

Inventor： Albert J. Impink, Jr. ,  Michael D. Heibel ,  Toshio Morita ,  Raymond Calvo

IPC: G21C7/08 ,  G21C7/12 ,  G21C17/10 ,  G21C17/112 ,  G21D3/04 ,  G21C7/06

CPC classification number: G21C17/10 ,  G21C7/12 ,  G21Y2002/206 ,  G21Y2004/40

Abstract: A safety system grade dropped rod detection system for a pressurized water reactor (PWR) utilizes core exit thermocouples arranged in multiple trains and hot and cold leg RTDs to generate a safety system grade rod stop signal. The system generates from the temperature signals a relative power deviation (RD) and a curvature index (CI), which is the spatial second derivative of RD for each fuel assembly. The CI signatures not only provide rapid, reliable detection of dropped control rods, but also clearly identify failed and failing thermocouples.

公开(公告)号：US5217678A

公开(公告)日：1993-06-08

申请号：US916697

申请日：1992-07-22

Applicant: Yukihisa Fukasawa

Inventor： Yukihisa Fukasawa

IPC: G21C7/00 ,  G21C7/08

CPC classification number: G21C7/08 ,  G21Y2002/201 ,  G21Y2002/206 ,  G21Y2004/40 ,  G21Y2004/401 ,  Y02E30/39

Abstract: A storage 14 of a unit 13 constituting a gang control-rod operating unit stores an A type pattern sequence for configuring an A type control rod pattern, a B type pattern sequence for configuring a B type control rod pattern, and a control rod pattern exchange sequence. The control rod pattern exchange sequence comprises groups subsequent to 5 in the A type sequence and groups subsequent to 5 in the B type sequence. A control panel includes a sequence select switch 12a, a control rod group select switch 12b, and an insert/withdraw select switch 12c. In exchanging the control rod pattern, an operator actuates the sequence select switch 12a to select the control rod pattern exchange sequence, and then actuates the control rod group select switch 12b and the insert/withdraw select switch 12c to operate a plurality of control rods at the same time for carrying out the pattern exchange. The operation of exchanging the control rod pattern is facilitated and reliability is improved. Selection of the control rod pattern exchange sequence is allowed only when reactor power is above a set value at which an RWM 17 is to be released.

Abstract translation: 构成组合控制杆操作单元的单元13的存储器14存储用于配置A型控制棒图案的A型图案序列，用于配置B型控制棒图案的B型图案序列和控制棒图案交换 序列。 对照杆模式交换序列包括在A型序列中的5个之后的组以及在B型序列中的5个之后的组。 控制面板包括顺序选择开关12a，控制棒组选择开关12b和插入/取出选择开关12c。 在更换控制杆图案时，操作者致动顺序选择开关12a以选择控制棒图案交换顺序，然后致动控制棒组选择开关12b和插入/取出选择开关12c以操作多个控制杆 同时进行模式交换。 便于更换控制棒图形的操作，提高了可靠性。 仅当反应堆功率高于要释放RWM 17的设定值时才允许选择控制棒图形交换顺序。