-
公开(公告)号：US20240200679A1
公开(公告)日：2024-06-20
申请号：US18588722
申请日：2024-02-27
IPC分类号： F16K25/04 , B22F10/28 , B22F10/64 , B33Y10/00 , B33Y40/20 , B33Y80/00 , C22C19/07 , C22F1/10 , F16K3/30
CPC分类号： F16K25/04 , B22F10/64 , B33Y40/20 , B33Y80/00 , C22C19/07 , C22F1/10 , B22F10/28 , B22F2301/15 , B33Y10/00 , F16K3/30
摘要： To provide a fluid contact member whose corrosion resistance is particularly further improved than that in the related art. In order to solve this problem, a fluid contact member 10 includes a fluid contact portion 1 configured to be in contact with a fluid, the fluid contact portion 1 has a cobalt-based alloy phase 2 having a dendrite, and a compound phase 3 formed in an arm space of the dendrite and containing chromium carbide, and among a plurality of secondary arms 5 extending from one primary arm 4 constituting the dendrite, an average interval between adjacent secondary arms 5 is 5 μm or less. At this time, the average interval is preferably 3 μm or less. Further, the compound phase 3 is preferably formed discontinuously in the dendrite arm space.
-
公开(公告)号：US20240192175A1
公开(公告)日：2024-06-13
申请号：US18527544
申请日：2023-12-04
发明人： Kaname SAGA , So KITAZAWA , Akihiko HIRANO , Yoshizumi FUKUHARA , Junta YAMADA
CPC分类号： G01N29/07 , G01N29/2437 , G01N2291/02854
摘要： An ultrasonic inspection apparatus includes a control device 12 that outputs a pulse signal for making an ultrasonic probe 11A transmit an ultrasonic wave to the ultrasonic probe 11A and that is supplied with a waveform signal obtained by converting the received ultrasonic wave from an ultrasonic probe 11B, and that computes a thickness reduction depth of a pipe 1 between the ultrasonic probe 11A and the ultrasonic probe 11B. The control device 12 computes the thickness reduction depth of the pipe 1 by selectively using a reception time of the ultrasonic wave transmitted from the ultrasonic probe 11A, reflected once by an inner surface 3 of the pipe 1, and received by the ultrasonic probe 11B, and a reception time of the ultrasonic wave transmitted from the ultrasonic probe 11A, reflected twice by the inner surface 3 of the pipe 1, and received by the ultrasonic probe 11B.
-
公开(公告)号：US11946554B2
公开(公告)日：2024-04-02
申请号：US17311726
申请日：2019-11-06
IPC分类号： C22C19/07 , B22F10/64 , B33Y40/20 , B33Y80/00 , C22F1/10 , F16K25/04 , B22F10/28 , B33Y10/00 , F16K3/30
CPC分类号： F16K25/04 , B22F10/64 , B33Y40/20 , B33Y80/00 , C22C19/07 , C22F1/10 , B22F10/28 , B22F2301/15 , B33Y10/00 , F16K3/30
摘要： To provide a fluid contact member whose corrosion resistance is particularly further improved than that in the related art. In order to solve this problem, a fluid contact member 10 includes a fluid contact portion 1 configured to be in contact with a fluid, the fluid contact portion 1 has a cobalt-based alloy phase 2 having a dendrite, and a compound phase 3 formed in an arm space of the dendrite and containing chromium carbide, and among a plurality of secondary arms 5 extending from one primary arm 4 constituting the dendrite, an average interval between adjacent secondary arms 5 is 5 μm or less. At this time, the average interval is preferably 3 μm or less. Further, the compound phase 3 is preferably formed discontinuously in the dendrite arm space.
-
公开(公告)号：US20240050893A1
公开(公告)日：2024-02-15
申请号：US18196774
申请日：2023-05-12
发明人： Sohei FUKUI , Yoichi WADA , Kazuo TOMINAGA , Motoi TANAKA , Masaaki TANAKA , Daiki NUNOKAWA
CPC分类号： B01D53/78 , B01D53/70 , B01D53/75 , B01D53/1487 , B01D53/1493 , B01D2257/202 , B01D2257/2068 , B01D2252/103
摘要： A filtered containment venting system includes a filtered containment venting tank having: an organic iodine remover for collecting organic iodine; scrubbing water for collecting inorganic iodine; and an alkalizing agent for adding an action of buffering a pH value to the scrubbing water.
-
公开(公告)号：US11515051B2
公开(公告)日：2022-11-29
申请号：US16479989
申请日：2018-01-12
发明人： Sohei Fukui , Takahisa Matsuzaki , Kazuaki Kito , Yoshihiko Ishii , Masataka Hidaka , Tomohiko Ikegawa , Katsuki Hamada
摘要： In view of above problems, an object of the invention is to provide a primary containment vessel venting system having a structure capable of continuously discharging vapor in a primary containment vessel out of the system and continuously reducing pressure of the primary containment vessel without discharging radioactive noble gases to the outside of the containment vessel and without using an enclosing vessel or a power source. In order to achieve the above object, an nuclear power plant of the invention includes a primary containment vessel which includes a reactor pressure vessel, a radioactive substance separation apparatus which is disposed inside the primary containment vessel and through which the radioactive noble gases do not permeate but vapor permeates, a vent pipe which is connected to the radioactive substance separation apparatus, and an exhaust tower which is connected to the vent pipe and discharges a gas, from which a radioactive substance is removed, to the outside.
-
6.发明授权公开(公告)号：US11378383B2
公开(公告)日：2022-07-05
申请号：US16605709
申请日：2018-04-06
发明人： Yukihiro Murata , Hiroshi Seki , Yohei Sugimoto
摘要： A plant facility apparatus recognition system is provided, which appropriately recognizes a plant facility apparatus even in a plant facility in which a wireless facility and a marker are not able to be installed even when the shape of the plant facility apparatus is different from or has been changed from design data. The plant facility apparatus recognition system that uses a mobile device having a camera to recognize the plant facility apparatus to be subjected to work in the plant facility includes a characteristic length acquirer that acquires information on the pipe as a first characteristic length from an image obtained by causing the camera to image the plant facility apparatus and the pipe existing near the plant facility apparatus, and a characteristic length comparator that compares the first characteristic length with a second characteristic length acquired from the design data and related to the pipe.
-
公开(公告)号：US20220102019A1
公开(公告)日：2022-03-31
申请号：US17479126
申请日：2021-09-20
发明人： Takashi Oohira , Shintaro Yanagisawa , Satoshi Oouchi , Nobuyuki Ota , Ryo Hamada , Hideyuki Hosokawa
IPC分类号： G21F9/28
摘要： A chemical decontamination method capable of improving the decontamination efficiency of chemical decontamination of a steam dryer in the RPV is provided. In particular, the decontamination method includes feeding a chemical decontamination aqueous solution into a reactor pressure vessel in which a steam dryer is arranged, and after chemical decontamination of the steam dryer, the water level of the chemical decontamination aqueous solution existing in the reactor pressure vessel is lowered to a first water level below the lower end of the steam dryer.
-
公开(公告)号：US20220025984A1
公开(公告)日：2022-01-27
申请号：US17311726
申请日：2019-11-06
摘要： To provide a fluid contact member whose corrosion resistance is particularly further improved than that in the related art. In order to solve this problem, a fluid contact member 10 includes a fluid contact portion 1 configured to be in contact with a fluid, the fluid contact portion 1 has a cobalt-based alloy phase 2 having a dendrite, and a compound phase 3 formed in an arm space of the dendrite and containing chromium carbide, and among a plurality of secondary arms 5 extending from one primary arm 4 constituting the dendrite, an average interval between adjacent secondary arms 5 is 5 μm or less. At this time, the average interval is preferably 3 μm or less. Further, the compound phase 3 is preferably formed discontinuously in the dendrite arm space.
-
公开(公告)号：US20210323085A1
公开(公告)日：2021-10-21
申请号：US17363826
申请日：2021-06-30
发明人： Sei HIRANO , Yoshihisa KIYOTOKI , Hajime MIYATA , Hirotsugu KAWANAKA , Shinji MATSUSHITA , Hiroshi SHIRATORI
IPC分类号： B23K20/12 , C22F1/10 , F16K15/02 , F16K25/00 , F16K3/12 , G21D1/02 , F16K3/02 , C22C1/04 , C23C24/10 , B22F3/115 , C22C19/07 , F01L3/02 , G21C17/022 , C23C28/02 , F01L3/08 , B23K26/342
摘要： Intended is to improve the corrosion resistance of an overlay used in a nuclear power plant, and to reduce dissolution of cobalt from an overlay. The corrosion and wear resistant overlay 7 is formed along a surface of a base 2 by laser lamination modeling, and is configured from a plurality of metal layers 1a, 1b, 1c, and 1d of a Co-base alloy. The thickness of carbide eutectics that precipitate in the metal layers 1a, 1b, 1c, and 1d is the largest in the metal layer 1a closest to the base 2, and is gradually smaller in the metal layers 1b, 1c, and 1d farther away from the base 2. The intensity of the laser beam applied to form layers by laser lamination modeling is adjusted so that the carbide eutectics that precipitate in at least the outermost metal layer 1d have a controlled size of 10 μm or less.
-
公开(公告)号：US10957458B2
公开(公告)日：2021-03-23
申请号：US15983307
申请日：2018-05-18
发明人： Kento Ooka , Naoto Misawa , Hiroshi Okazawa
摘要： A control rod drive system and an inspection method of the control rod drive system capable of performing inspection safely and effectively. A control rod drive system controlling operation by supplying a hydraulic pressure to control rod drive mechanisms. A plurality of first hydraulic control units supply the hydraulic pressure to corresponding control rod drive mechanisms and a second hydraulic control unit supplies the hydraulic pressure to corresponding control rod drive mechanisms of the first hydraulic control unit as an inspection target instead of the first hydraulic control unit.
-
-
-
-
-
-
-
-
-
搜索结果
260 条记录 (耗时 0.039 秒)
