公开(公告)号：US20130182811A1

公开(公告)日：2013-07-18

申请号：US13730767

申请日：2012-12-28

Applicant: HITACHI-GE NUCLEAR ENERGY, LTD.

Inventor： Atsushi BABA ,  Atsushi FUSHIMI ,  Izumi YAMADA ,  Yoshinori MUSHA ,  Setsuo ARITA ,  Akira MURATA ,  Tamotsu ASANO ,  Mikio KOYAMA ,  Hiroaki KATSUYAMA ,  Ryuta HAMA

IPC: G21C17/035

CPC classification number: G21C17/035

Abstract: An ultrasonic sensor has a piezo-electric element attached at an end surface outside a reactor pressure vessel (RPV) of a sensor leading edge portion. The sensor leading edge portion passes through a bottom head of the RPV and is installed on the bottom head. Ultrasonic waves generated by the piezo-electric element are propagated to the sensor leading edge portion and are propagated to reactor water in the RPV from the sensor leading edge portion. When water surface of the reactor water in the RPV exists below a core support plate, the ultrasonic waves propagated inside the reactor water are reflected on the water surface. Ultrasonic waves reflected on the water surface are propagated into the reactor water, enter the sensor leading edge portion, and are received by the piezo-electric element. Using the ultrasonic waves received by the piezo-electric element, the water level in the RPV is obtained.

Abstract translation: 超声波传感器具有安装在传感器前缘部分的反应堆压力容器（RPV）外的端面处的压电元件。 传感器前缘部分穿过RPV的底部头部并安装在底部头部。 由压电元件产生的超声波传播到传感器前缘部分，并从传感器前缘部分传播到RPV中的反应堆水中。 当RPV中的反应器水的水面存在于芯支撑板下方时，在反应器水中传播的超声波在水面上被反射。 在水面上反射的超声波传播到反应堆水中，进入传感器前缘部分，并被压电元件接收。 使用由压电元件接收的超声波，获得RPV中的水位。

公开(公告)号：US08467492B2

公开(公告)日：2013-06-18

申请号：US13020463

申请日：2011-02-03

Applicant: Naoyuki Ishida ,  Hisamichi Inoue

Inventor： Naoyuki Ishida ,  Hisamichi Inoue

IPC: G21C15/00

CPC classification number: F04F5/462 ,  F04F5/10 ,  F04F5/54 ,  G21C15/25 ,  Y02E30/40

Abstract: A nozzle apparatus of a jet pump includes a nozzle base member, and a plurality of nozzles installed to the nozzle base member and forming a plurality of narrowing portions, in which a fluid passage cross-sectional area of a driving fluid passage formed in the nozzle is reduced.

Abstract translation: 喷射泵的喷嘴装置包括喷嘴基部构件和安装在喷嘴基部构件上并形成多个变窄部分的多个喷嘴，其中形成在喷嘴中的驱动流体通道的流体通道横截面积 降低了。

公开(公告)号：US08457270B2

公开(公告)日：2013-06-04

申请号：US12984326

申请日：2011-01-04

Applicant: Hideyuki Hosokawa ,  Makoto Nagase ,  Kazushige Ishida ,  Yoichi Wada ,  Naoshi Usui ,  Motohiro Aizawa ,  Motomasa Fuse

Inventor： Hideyuki Hosokawa ,  Makoto Nagase ,  Kazushige Ishida ,  Yoichi Wada ,  Naoshi Usui ,  Motohiro Aizawa ,  Motomasa Fuse

IPC: G21C19/42

CPC classification number: G21C19/42 ,  G21C17/0225 ,  G21F9/06 ,  G21F9/12 ,  G21F9/28

Abstract: A method of suppressing deposition of radionuclides on components of a nuclear power plant comprises forming a ferrite film by contacting a first chemical including iron (II) ions, a second chemical for oxidizing the iron (II) ions to iron (III) ions, and a third chemical for adjusting the pH of a processing solution containing a mixture of the first and second chemicals to be 5.5 to 9.0 with the metal member surface in a time period from a finishing stage in decontamination step of removing contaminants formed on the surface of metal member composing the nuclear power plant, and suppressing deposition of radionuclides on the metal member by the ferrite film.

Abstract translation: 一种抑制放射性核素在核电厂部件上沉积的方法包括通过使包含铁（II）离子的第一化学品，用于氧化铁（II）离子的第二种化学品与铁（III）离子）接触来形成铁氧体膜，以及 第三种化学品，用于在去除在金属表面形成的污染物的净化步骤的净化步骤的整理阶段中将含有第一和第二化学品的混合物的处理溶液的pH调节至5.5至9.0的金属构件表面 构成核电站的成员，并且通过铁氧体膜抑制放射性核素在金属构件上的沉积。

公开(公告)号：US08326664B2

公开(公告)日：2012-12-04

申请号：US13151540

申请日：2011-06-02

Applicant: Yoshibumi Fukuda ,  Takeshi Yokota ,  Kenichirou Yamane ,  Kenji Akagi ,  Kensuke Morita

Inventor： Yoshibumi Fukuda ,  Takeshi Yokota ,  Kenichirou Yamane ,  Kenji Akagi ,  Kensuke Morita

IPC: G06Q10/00

CPC classification number: G06Q10/06 ,  G06Q10/063116 ,  G06Q10/063118 ,  G06Q10/1097

Abstract: A carry-in ready period calculation part calculates a candidate of a carry-in ready period which is a period during which a carry-in operation can be conducted and outputs the candidate in an output part so as to make entire construction works efficient. The calculation is performed based on a site arrival time schedule which is a time schedule showing when a carry-in target equipment arrives at a site, a temporary placement time schedule which is a time schedule showing when the equipment arrived is temporarily placed, and a construction time schedule of a building in which the equipment is carried.

Abstract translation: 进入就绪期间计算部分计算作为可以进行携带操作的期间的入库就绪期间的候选，并且在输出部输出候选，以使整个构造工作有效。 该计算是基于作为进入目标设备到达现场的时间表的站点到达时间表进行的，作为暂时放置设备到达时间的时间表的临时放置时间表，和 设备运载的建筑物的施工时间表。

公开(公告)号：US20120281800A1

公开(公告)日：2012-11-08

申请号：US13460984

申请日：2012-05-01

Applicant: Atsushi BABA ,  Yoshinori MUSHA ,  Masahiro HIRATSUKA ,  Minoru OOTAKA ,  Masahiro KOIKE

Inventor： Atsushi BABA ,  Yoshinori MUSHA ,  Masahiro HIRATSUKA ,  Minoru OOTAKA ,  Masahiro KOIKE

IPC: G21C17/00

CPC classification number: G01S7/521 ,  G01S7/539 ,  G01S15/88 ,  G21C15/25 ,  G21C17/017 ,  Y02E30/40

Abstract: A jet pump beam (hereinafter, referred to as a beam) is fitted into a pair of projecting portions installed to a transition piece, and after the beam is arched, a beam bolt engaged with the beam is tightened. An end of the beam bolt comes in contact with a top surface of an insert member fitted into an elbow disposed between the pair of projecting portions. An ultrasonic sensor head is fixed to the beam bolt, and ultrasonic waves are sent to the beam bolt from the ultrasonic sensor in the ultrasonic sensor head. An ultrasonic measuring apparatus obtains echo intensity of each of reflected waves generated at the end of the beam bolt and a bottom surface of the insert member, and based on the echo intensities, an echo intensity ratio R is calculated. The installed state of the beam is checked using the echo intensity ratio R.

Abstract translation: 将喷射泵梁（以下称为梁）装配到安装在过渡件上的一对突出部分中，并且在梁被拱形之后，与梁接合的梁螺栓被拧紧。 梁螺栓的端部与安装在设置在一对突出部之间的弯头中的插入件的顶面接触。 超声波传感器头固定在梁螺栓上，超声波从超声波传感器头中的超声波传感器发送到梁螺栓。 超声波测量装置获得在梁螺栓的端部和插入构件的底面处产生的每个反射波的回波强度，并且基于回波强度，计算回波强度比R. 使用回波强度比R检查光束的安装状态

公开(公告)号：US08250923B2

公开(公告)日：2012-08-28

申请号：US12389024

申请日：2009-02-19

Applicant: Kazuya Ehara ,  Naoyuki Kono ,  Masahiro Miki ,  Yoshio Nonaka

Inventor： Kazuya Ehara ,  Naoyuki Kono ,  Masahiro Miki ,  Yoshio Nonaka

IPC: G01N29/00 ,  G01N29/04

CPC classification number: G01N29/07 ,  G01N29/265 ,  G01N2291/044 ,  G01N2291/101 ,  G01N2291/2675

Abstract: An ultrasonic inspection method and ultrasonic inspection apparatus is capable of inspecting a weld line and of detecting a circumferential crack and an axial crack that are present in the weld line. An ultrasonic probe is placed on the surface of a structure and transmits an ultrasonic wave. The ultrasonic wave is transmitted at an angle in an X′-Z plane. The direction of a normal to the surface is defined as an X axis. The direction in which the weld line extends is defined as a Y axis. The direction perpendicular to the X axis and the Y axis is defined as a Z axis. An axis obtained by rotating the X axis around the Z axis is defined as an X′ axis. A control mechanism performs signal processing of signals reflected from the defect or defects to detect the defect or defects and to measure the length of the defect or defects.

Abstract translation: 超声波检查方法和超声波检查装置能够检查焊接线并检测存在于焊接线中的周向裂纹和轴向裂纹。 将超声波探头置于结构表面并传输超声波。 超声波以X'-Z平面的角度透过。 将表面法线的方向定义为X轴。 焊接线延伸的方向被定义为Y轴。 垂直于X轴和Y轴的方向被定义为Z轴。 通过将X轴绕Z轴旋转而获得的轴被定义为X'轴。 控制机构执行从缺陷或缺陷反射的信号的信号处理，以检测缺陷或缺陷并测量缺陷或缺陷的长度。

公开(公告)号：US08228058B2

公开(公告)日：2012-07-24

申请号：US12128316

申请日：2008-05-28

Applicant: Akira Nishimizu ,  Hirofumi Ouchi ,  Yoshio Nonaka ,  Yosuke Takatori ,  Akihiro Taki ,  Makoto Senoo

Inventor： Akira Nishimizu ,  Hirofumi Ouchi ,  Yoshio Nonaka ,  Yosuke Takatori ,  Akihiro Taki ,  Makoto Senoo

IPC: G01R33/02 ,  G01N27/82

CPC classification number: G01N27/9033

Abstract: Disclosed is an eddy current flaw detection probe that is capable of pressing itself against an inspection target whose curvature varies. A flaw sensor is configured by fastening a plurality of coils to a flexible substrate that faces the surface of the inspection target. A first elastic body is positioned opposite the inspection target for the flaw sensor, is obtained by stacking two or more elastic plates, and has an elastic coefficient that varies in a longitudinal direction. A second elastic body is a porous body positioned between the flexible substrate and the first elastic body. A pressure section is employed to press the first elastic body toward the inspection target.

Abstract translation: 本发明公开了一种涡流探伤探针，其能够将其自身压向弯曲变化的检查目标。 缺陷传感器通过将多个线圈紧固到面向检查对象表面的柔性基板来构造。 第一弹性体与用于缺陷传感器的检查对象物相对设置，通过堆叠两个或更多个弹性板获得，并且具有在纵向方向上变化的弹性系数。 第二弹性体是位于柔性基板和第一弹性体之间的多孔体。 使用压力部将第一弹性体朝向检查对象物按压。

公开(公告)号：US20120063561A1

公开(公告)日：2012-03-15

申请号：US13222366

申请日：2011-08-31

Applicant: Takeshi MITSUYASU ,  Motoo AOYAMA ,  Tetsushi HINO ,  Takuji NAGAYOSHI ,  Masao CHAKI

Inventor： Takeshi MITSUYASU ,  Motoo AOYAMA ,  Tetsushi HINO ,  Takuji NAGAYOSHI ,  Masao CHAKI

IPC: G21C3/32

CPC classification number: G21C3/328 ,  G21C3/326 ,  Y02E30/38

Abstract: A fuel assembly has a constitution in which plural fuel rods are arranged in 10 rows by 10 columns in a channel box, and includes plural fuel rods G containing gadolinium and plural partial length fuel rods P. In the fuel assembly, average enrichment of lower portion cross section is approximately 4.6 wt %, and average enrichment of upper portion cross section is approximately 4.7 wt %. The average enrichments at the outermost layer are approximately 5.6 wt % both in the upper portion and the lower portion. Ratios e/x of the average enrichment of the outermost layer e (wt %) to the average enrichment of the fuel assembly cross section x (wt %) are 1.19 in the upper portion and 1.22 in the lower portion, and the ratios satisfy equation (1). [ Equation   1 ]  e x ≥ - 18.3  ( x 10 ) 5 + 68.766  ( x 10 ) 4 - 101.77  ( x 10 ) 3 + 74.428  ( x 10 ) 2 - 27.372  ( x 10 ) + 5.1682 ( 1 )

Abstract translation: 燃料组件具有多个燃料棒在通道箱中以10行×10列排列的结构，并且包括含有钆和多个部分长度的燃料棒P的多个燃料棒G.在燃料组件中，下部的平均浓缩 横截面为约4.6重量％，上部截面的平均富集度为约4.7重量％。 最外层的平均浓度在上部和下部均为5.6重量％左右。 最外层e（wt％）对燃料组件横截面x（wt％）的平均富集度的平均富集比例e / x在上部为1.19，下部为1.22，比率满足式 （1）。 （x 10）4 - 101.77（x 10）3 + 74.428（x 10）2 - 27.372（x 10）+ 5.1682（x 10） （1）

公开(公告)号：US08090073B2

公开(公告)日：2012-01-03

申请号：US11032289

申请日：2005-01-10

Applicant: Masashi Sugiyama ,  Yukihiro Katayama ,  Kenji Tominaga ,  Hirohisa Satomi ,  Ichirou Shimoda

Inventor： Masashi Sugiyama ,  Yukihiro Katayama ,  Kenji Tominaga ,  Hirohisa Satomi ,  Ichirou Shimoda

IPC: G21C7/32 ,  G21C15/18

CPC classification number: G21D3/06 ,  G21C9/00 ,  Y02E30/40

Abstract: A recirculation pump motor is supplied with a power from a unit auxiliary middle voltage bus through a power supply system including a first circuit breaker, a voltage source inverter, and a second circuit breaker electrically connected in series to provide a no-load operation by use of the voltage source inverter. The second circuit breaker may be multiplexed with more than one breaker electrically connected in series. An existing nuclear plant using a induction motor driving a hydraulic coupling mechanically coupled to a synchronous generator for driving the recirculation pump, such as an MfG set, may be subjected to a method of replacing the induction motor, the hydraulic coupling, and the synchronous generator with the voltage source inverter and a circuit breaker through electrically disconnection and removal.

Abstract translation: 循环泵电动机通过包括第一断路器，电压源逆变器和电连接在一起的第二断路器的电源系统从单元辅助中压电压总线供电，以提供使用中的空载操作 的电压源逆变器。 第二断路器可与多于一个断路器进行多路复用，该断路器串联电连接。 使用驱动液压联轴器的感应电动机的现有核电厂可以采用一种替代感应电动机，液压联轴器和同步发电机的方法，所述异步电动机机械耦合到同步发电机以驱动诸如MfG组的再循环泵 与电源逆变器和断路器通过电气断开和拆卸。

公开(公告)号：US07997078B2

公开(公告)日：2011-08-16

申请号：US12574219

申请日：2009-10-06

Applicant: Masao Chaki ,  Kazuaki Kitou ,  Motoo Aoyama ,  Masaya Ootsuka ,  Kouji Shiina

Inventor： Masao Chaki ,  Kazuaki Kitou ,  Motoo Aoyama ,  Masaya Ootsuka ,  Kouji Shiina

IPC: G21D5/00 ,  F01K7/34

CPC classification number: G21C1/084 ,  G21D1/02 ,  G21D3/00 ,  G21Y2002/201 ,  G21Y2002/304 ,  G21Y2004/30 ,  G21Y2004/40 ,  Y02E30/31 ,  Y02E30/39

Abstract: In a nuclear power plant, thermal power in a second operation cycle of a nuclear reactor is uprated from thermal power in a first operation cycle preceding the second operation cycle by at least one operation cycle. A proportion of steam extracted from a steam system and introduced to a feedwater heater, which is in particular extracted from an intermediate point and an outlet of a high pressure turbine, with respect to a flow rate of main steam, is reduced in the second operation cycle from that in the first operation cycle such that the temperature of feedwater discharged from the feedwater heater is lowered by 1° C. to 40° C. in the second operation cycle.

Abstract translation: 在核电站中，核反应堆的第二操作循环中的热功率在第二操作周期之前的第一操作周期内从热功率上升至少一个操作周期。 在蒸汽系统中提取的蒸汽的比例相对于主蒸汽的流量被引入特定从高压汽轮机的中间点和出口抽出的给水加热器在第二操作 循环，从而在第二操作循环中使得从给水加热器排出的给水温度降低1℃至40℃。