公开(公告)号：US10242759B2

公开(公告)日：2019-03-26

申请号：US14625827

申请日：2015-02-19

Applicant: Hitachi-GE Nuclear Energy, Ltd.

Inventor： Takahiro Tsuchiya ,  Toshihiro Kodama ,  Hirokazu Akatsuka

IPC: G21C7/14 ,  F16H25/22 ,  H02K7/11 ,  H02K7/06 ,  F16H25/20

Abstract: A control rod drive mechanism includes an outer tube and a guide tube which is arranged in the outer tube and is held by the outer tube. Furthermore, the control rod drive mechanism includes a spool piece with an inner magnet coupling and a rotary shaft connected to the inner magnet coupling arranged internally. The lower end portion of the outer tube is supported by the spool piece in the spool piece. The outside diameter of the outer tube, through the length of the outer tube, is smaller than the inside diameter of the spool piece and the outer tube, in the radial direction of the outer tube, is not projected outside the inner surface of the spool piece. Therefore, the installation places of the O-rings which are a seal member are reduced and the time required for maintenance of the control rod drive mechanism can be shortened.

公开(公告)号：US09799418B2

公开(公告)日：2017-10-24

申请号：US14913024

申请日：2014-07-29

Applicant: Hitachi-GE Nuclear Energy, Ltd.

Inventor： Yuuko Kani ,  Takashi Asano ,  Yusuke Kitamoto ,  Noriaki Takeshi ,  Kenji Noshita ,  Mamoru Kamoshida

IPC: G21F9/00 ,  G21F9/12 ,  G21F9/06 ,  G01T7/04 ,  G01T1/167 ,  B01D15/10 ,  B01D37/00 ,  B03C5/00

CPC classification number: G21F9/12 ,  B01D15/10 ,  B01D37/00 ,  B03C5/00 ,  B03C2201/24 ,  G01T1/167 ,  G01T7/04 ,  G21F9/06

Abstract: Provided is a method of treating radioactive liquid waste which reduces the amount of radioactive waste to be generated and is capable of removing a radioactive nuclide from radioactive liquid waste to the extent that the concentration thereof is less than or equal to the measurement lower limit using a simple apparatus configuration. A filtration device is connected to a colloid removal device by a connection pipe. An adsorption tower positioned at the highest stream of an adsorption device is connected to the colloid removal device by a connection pipe. The colloid removal device includes an electrostatic filter. Respective adsorption towers in the adsorption device are sequentially connected by a pipe. A discharge pipe is connected to the adsorption tower positioned at the lowest stream of the adsorption device. Radioactive liquid waste, containing particles having a particle diameter of 1 μm or greater, negatively charged colloids, and a radioactive nuclide, is supplied to the filtration device. The particles having a particle diameter of 1 μm or greater are removed by the filtration device and the negatively charged colloids are removed by the electrostatic filter that is positively charged. The radioactive nuclide is removed by the adsorption tower.

公开(公告)号：US09753017B2

公开(公告)日：2017-09-05

申请号：US14293421

申请日：2014-06-02

Applicant: Hitachi-GE Nuclear Energy, Ltd.

Inventor： Naoyuki Kono ,  Kouichi Kurosawa ,  So Kitazawa ,  Yuji Matsui

IPC: G01S7/28 ,  G01N29/34 ,  G01S15/89 ,  G01N29/06 ,  G01N29/26 ,  G21C17/01 ,  G01S7/00 ,  G21C17/013

CPC classification number: G01N29/343 ,  G01N29/0654 ,  G01N29/262 ,  G01N2291/106 ,  G01N2291/2636 ,  G01S7/003 ,  G01S15/8913 ,  G01S15/8915 ,  G21C17/01 ,  G21C17/013

Abstract: A single-element ultrasonic sensor includes a single transducer element and transmits an ultrasonic wave on the basis of a pulse wave. An ultrasonic array sensor includes a plurality of transducer elements and receives an ultrasonic reflected wave. A pulsar supplies the pulse wave to the single element ultrasonic sensor. A receiver receives electric signals from the transducer elements included in the ultrasonic array sensor. An amplification and conversion unit amplifies the electric signals received from the transducer elements included in the ultrasonic array sensor, converts the electric signals into digital signals, and arranges the digital signals in a serial order so as to generate a serial digital signal. An image generator generates an image on the basis of the serial digital signal.

公开(公告)号：US09230699B2

公开(公告)日：2016-01-05

申请号：US14450886

申请日：2014-08-04

Applicant: Hitachi-GE Nuclear Energy, Ltd.

Inventor： Kazushige Ishida ,  Hideyuki Hosokawa ,  Motohiro Aizawa

IPC: G21F9/16 ,  G21F9/00 ,  G21F9/30

CPC classification number: G21F9/004 ,  G21F9/30

Abstract: A circulation pipe of a chemical decontamination apparatus including a malonic acid injection apparatus and an oxalic acid injection apparatus is connected to a purification system pipe, which is made of carbon steel, of a boiling water nuclear power plant. A malonic acid aqueous solution is injected from the malonic acid injection apparatus into the circulation pipe. An oxalic acid aqueous solution is injected from the oxalic acid injection apparatus into the circulation pipe. A reduction decontaminating solution including a malonic acid of 5200 ppm and an oxalic acid within a range of 50 to 400 ppm is supplied into the purification system pipe through the circulation pipe. Reduction decontamination for an inner surface of the purification system pipe is executed. After the reduction decontamination for the purification system pipe finishes, the malonic acid and oxalic acid included in the solution are decomposed and furthermore, the solution is purified.

Abstract translation: 包括丙二酸注射装置和草酸注射装置的化学净化装置的循环管连接到沸水核电站的由碳钢制成的净化系统管。 将丙二酸水溶液从丙二酸注射装置注入循环管。 将草酸水溶液从草酸注射装置注入循环管中。 将包含5200ppm丙二酸和50〜400ppm范围内的草酸的还原去污溶液通过循环管供给到净化系统管中。 执行净化系统管的内表面的还原去污。 在净化系统管的还原净化完成后，溶液中包含的丙二酸和草酸分解，此外，溶液被纯化。

公开(公告)号：US09177677B2

公开(公告)日：2015-11-03

申请号：US12907161

申请日：2010-10-19

Applicant: Koichi Kurosawa ,  Satoru Aoike ,  Shinya Ohmori ,  Junya Kaneda

Inventor： Koichi Kurosawa ,  Satoru Aoike ,  Shinya Ohmori ,  Junya Kaneda

IPC: G21C17/01 ,  G21C17/013 ,  G21C17/003 ,  G01N1/32 ,  G21C19/20

CPC classification number: G21C17/003 ,  G01N1/32 ,  G21C17/013 ,  G21C19/207

Abstract: An underwater remote inspection device is provided with an etching device and a magnifying observation device mounted to a supporting member. A chamber of the etching device is provided with a negative electrode, a positive electrode and a sealing device, and is connected to an etchant supply pipe and an etchant exhaust pipe. A single pair of annular sealing members of the sealing device is provided to a distal end portion of the chamber. A suction passage formed in the side wall of the chamber communicates to a sealing region formed between the sealing members. The magnifying observation device is provided with a magnifying camera in a waterproof container and a plurality of LED lights are installed to the waterproof container. The underwater remote inspection apparatus can prevent leakage of an etchant and reduce execution time of etching.

Abstract translation: 水下远程检查装置设置有安装在支撑部件上的蚀刻装置和放大观察装置。 蚀刻装置的室设置有负极，正极和密封装置，并且连接到蚀刻剂供给管和蚀刻剂排气管。 密封装置的一对环形密封构件设置在腔室的远端部分。 形成在室的侧壁中的吸入通道与密封构件之间形成的密封区域连通。 放大观察装置在防水容器中设置放大照相机，并且多个LED灯安装在防水​​容器上。 水下远程检测装置可以防止蚀刻剂的泄漏，并减少蚀刻的执行时间。

公开(公告)号：US20140331771A1

公开(公告)日：2014-11-13

申请号：US14081598

申请日：2013-11-15

Applicant: Hitachi-GE Nuclear Energy, Ltd.

Inventor： Atsushi BABA ,  Yoshinori MUSHA ,  Atsushi FUSHIMI

IPC: G01B17/02 ,  G01K7/02

CPC classification number: G01B17/02 ,  G01B21/085 ,  G01K7/02 ,  G01N29/07 ,  G01N29/326 ,  G01N2291/02854

Abstract: Disclosed is an ultrasonic measurement system that even without additional means for temperature measurement, compensates for a change in a sound speed of an ultrasonic wave in a section whose thickness is to be measured, and assesses a wall thinning state of this section by highly accurate measurement of the thickness.An ultrasonic transducer 101 includes a piezoelectric element 108. A high-temperature MI cable 102 contains strands 110A, 110B connected to the ultrasonic transducer 101, and further includes a metallic sheath 112. A temperature sensor is contained in the high-temperature MI cable 102, and includes a thermocouple section 114 to which the strands 110A, 110B are connected at one end of each strand. An ultrasonic transmitter/receiver 117 makes the ultrasonic transducer to transmit ultrasonic waves and to receive the waves reflected from the object whose thickness is to be measured. A temperature-measuring instrument 115 uses the temperature sensor to measure temperature of the object 106 whose thickness is to be measured. A signal logger 104 corrects the sound speed of the ultrasonic wave propagating through the object whose thickness is to be measured, by use of information on the temperature measured by the temperature-measuring instrument 115, and then measures the thickness of the object 106.

Abstract translation: 公开了一种超声波测量系统，即使没有附加的温度测量装置，补偿了要测量其厚度的部分中的超声波的声速的变化，并且通过高度精确的测量来评估该部分的壁薄化状态 的厚度。 超声波换能器101包括压电元件108.高温MI电缆102包含连接到超声换能器101的线110A，110B，并且还包括金属护套112.温度传感器包含在高温MI电缆102中 并且包括热电偶部分114，股线110A，110B在每股线的一端连接到该热电偶部分114。 超声波发射器/接收器117使得超声波换能器发射超声波并接收从其厚度被测量的物体反射的波。 温度测量装置115使用温度传感器来测量其厚度被测量的物体106的温度。 信号记录器104通过使用由温度测量仪器115测量的温度的信息来校正通过要测量其厚度的物体传播的超声波的声速，然后测量物体106的厚度。

公开(公告)号：US20140112426A1

公开(公告)日：2014-04-24

申请号：US14060201

申请日：2013-10-22

Applicant: Hitachi-GE Nuclear Energy, Ltd.

Inventor： Tomohiko IKEGAWA ,  Kazuaki KITO

IPC: G21C15/18

CPC classification number: G21C15/18 ,  G21C9/012 ,  Y02E30/40

Abstract: The invention includes a heat exchanger provided at a position higher than a primary containment vessel; a condensate storage tank disposed below the heat exchanger and above an upper end of a reactor core placed in a reactor pressure vessel; a non-condensate gas discharge line connected to an upper section of the condensate storage tank and to a suppression pool; a second condensate discharge line connected to a position below that section of the condensate storage tank to which a first end of the non-condensate gas discharge line is connected, and to the suppression pool; and a condensate return line connected to a position below that section of the condensate storage tank to which a first end of the second condensate discharge line is connected, and to a side portion of the reactor pressure vessel, the side portion being above the upper end of the core.

Abstract translation: 本发明包括设置在高于主要容纳容器的位置处的热交换器; 冷凝水储存箱，设置在热交换器的下方，放置在反应堆压力容器中的反应堆芯的上端上方; 连接到冷凝水储存箱的上部的非冷凝气体排出管路和抑制池; 第二冷凝物排出管线，连接到所述冷凝水储存箱的与所述非冷凝气体排出管路的第一端连接的所述部分下方的位置; 以及冷凝水返回管路，其连接到所述冷凝水储存箱的与所述第二冷凝物排出管线的第一端连接的所述部分下方的位置，并且连接到所述反应堆压力容器的侧部，所述侧部位于所述上端 的核心。

公开(公告)号：US08701492B2

公开(公告)日：2014-04-22

申请号：US13021406

申请日：2011-02-04

Applicant: Hirohisa Mizota ,  Naoyuki Kono ,  Atsushi Baba

Inventor： Hirohisa Mizota ,  Naoyuki Kono ,  Atsushi Baba

IPC: G01N29/04

CPC classification number: G01N29/262 ,  G01N2291/0289 ,  G01N2291/106 ,  G10K11/345

Abstract: An ultrasonic measurement method and an ultrasonic measurement apparatus are capable of performing an inspection for a short time with a high SN ratio and a small variation An ultrasonic measurement method and an ultrasonic measurement apparatus are capable of performing an inspection for a short time with a high SN ratio and a small variation in sensitivity in a process for detecting a defect in all directions at 360 degrees using a matrix array sensor without performing mechanical scanning in all directions, while reducing noise that is caused by a bottom surface echo. An element selecting circuit selects a group of a plurality of ultrasonic transducer elements for transmission from among ultrasonic transducer elements that constitute a two-dimensional array sensor so that the ultrasonic transducer elements for selected for transmission are arranged in line symmetry with respect to a first line symmetric axis to set the group selected for transmission. The element selecting circuit selects a group of a plurality of ultrasonic transducer elements for reception so that the ultrasonic transducer elements selected for reception are arranged in line symmetry with respect to a second line symmetric axis that is perpendicular to the first line symmetric axis to set the group selected for reception. A transmitting element selector selects, as transmitting elements, the ultrasonic transducer elements set by the element selecting circuit. A receiving element selector selects, as receiving elements, the ultrasonic transducer elements set by the element selecting circuit.

Abstract translation: 超声波测量方法和超声波测量装置能够以高SN比和小变化进行短时间的检查超声波测量方法和超声波测量装置能够以高的时间进行短时间的检查 SN比，并且在使用矩阵阵列传感器检测360度的全方位的缺陷的处理中的灵敏度的小变化，而不会在所有方向上执行机械扫描，同时减少由底面回波引起的噪声。 元件选择电路从构成二维阵列传感器的超声换能器元件中选择一组用于透射的超声波换能器元件，使得用于选择用于透射的超声波换能器元件相对于第一线线排列成对称 对称轴设置选择的组进行传输。 元件选择电路选择一组用于接收的超声波换能器元件，使得选择接收的超声波换能器元件相对于垂直于第一线对称轴线的第二线对称轴线对称布置， 选择接收组。 发送元件选择器选择由元件选择电路设置的超声换能器元件作为发送元件。 接收元件选择器选择由元件选择电路设置的超声换能器元件作为接收元件。

公开(公告)号：US08566065B2

公开(公告)日：2013-10-22

申请号：US12844949

申请日：2010-07-28

Applicant: Yoshibumi Fukuda ,  Takeshi Yokota ,  Hisanori Nonaka ,  Norito Watanabe ,  Toshiyuki Miyake ,  Kenji Akagi ,  Kensuke Morita

Inventor： Yoshibumi Fukuda ,  Takeshi Yokota ,  Hisanori Nonaka ,  Norito Watanabe ,  Toshiyuki Miyake ,  Kenji Akagi ,  Kensuke Morita

IPC: G06F17/50

CPC classification number: G05B19/41885 ,  G05B2219/32085 ,  Y02P90/20 ,  Y02P90/24 ,  Y02P90/26

Abstract: An apparatus for supporting arrangement of operation areas layout includes: a storage unit that stores therein data on a position, a shape, and a use period of each operation area which has already been arranged in a prescribed site; a display control unit that references the data stored in the storage unit and makes a display unit display a top view illustrating arrangement of the operation areas at a given point of time on a temporal axis; and an operation areas layout arrangement processing unit that receives an input of a data on a position, a shape, and a use period of an operation area to be added into the prescribed site, references the data stored in the storage unit, and, if the received and added operation area is not determined to interfere with other already-arranged operation area, stores the data on the added operation area in the storage unit.

Abstract translation: 一种用于支持操作区域布置布置的装置包括：存储单元，其中存储已经布置在规定位置的每个操作区域的位置，形状和使用周期的数据; 显示控制单元，其参考存储在存储单元中的数据，并使显示单元显示在时间轴上给定时间点上的操作区域的布置的俯视图; 以及操作区域布置处理单元，其接收对要添加到规定场所的操作区域的位置，形状和使用期间的数据的输入，引用存储在存储单元中的数据，如果 接收和添加的操作区域不被确定为干扰其他已经布置的操作区域，将数据存储在存储单元中的添加的操作区域上。

公开(公告)号：US20130195238A1

公开(公告)日：2013-08-01

申请号：US13753629

申请日：2013-01-30

Applicant: Hitachi-GE Nuclear Energy, Ltd.

Inventor： Shinya OHMORI ,  Koichi KUROSAWA ,  Masaaki TANAKA ,  Takanori SATOH

IPC: G21C19/00

CPC classification number: G21C19/00 ,  G21C13/024 ,  G21C19/02 ,  G21C19/207 ,  G21Y2004/50

Abstract: A shroud support of a BWR includes a shroud support cylinder, shroud support legs welded to a bottom of a reactor pressure vessel (RPV) and a shroud support cylinder, and an annular shroud support plate disposed between the RPV and the shroud support cylinder and welded to the RPV and the shroud support cylinder. A support apparatus is set a CRD housings installed to the bottom of the RPV. A rail guide member horizontally set to the support apparatus reaches directly below the shroud support plate through an opening between the shroud support legs. A bent rail is set on the rail guide member. The bent rail setting a repair device is pushed out along the rail guide member toward the RPV through the opening portion by the rail push-out apparatus set on the support apparatus. The bent rail is spread at directly below the shroud support plate.

Abstract translation: BWR的护罩支撑件包括护罩支撑筒，焊接到反应堆压力容器（RPV）的底部的护罩支撑腿和护罩支撑筒，以及设置在RPV和护罩支撑筒之间并被焊接的环形护罩支撑板 到RPV和护罩支撑筒。 设置支撑装置，安装在RPV底部的CRD外壳。 水平设置到支撑装置的导轨构件通过护罩支撑腿之间的开口直接到达护罩支撑板的正下方。 轨道导轨构件上设有弯轨。 设置修理装置的弯曲轨道通过设置在支撑装置上的轨道推出装置通过开口部沿导轨构件向RPV推出。 弯曲的轨道分布在护罩支撑板的正下方。