Shinji AKIBA
著者に関連した記事は4件です。
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第3回
8.16 宮城地震における女川原子力発電所1号機の設備診断調査状況について
著者:
平川 知司,Tomoshi HIRAKAWA,秋葉 真司,Shinji AKIBA,鴇田 真孝,Masataka TOKITA
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Aging Design basis earthquake Earthquake
平川 知司,Tomoshi HIRAKAWA,秋葉 真司,Shinji AKIBA,鴇田 真孝,Masataka TOKITA
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Aging Design basis earthquake Earthquake
All Units of Onagawa NPS were automatically shutdown by 8.16 Miyagi Offshore Earthquake. Seismic safety analysis and evaluation were made in response to the order by Nuclear and Industrial Safety Agency and the neighboring local government's demands after that event. As a result, it was confirmed that seismic s afety of each unit was kept to the seismic shakings of this 8.16 Miyagi Offshore Earthquake and Assumed Miyagi Offshore Earthquake, as well as seismic shaki ng for safety confirmation. In addition t...
英字タイトル:
Investigation of Equipment at Onagawa Unit1 after 8.16 Miyagi Offshore Earthquake
英字タイトル:
Investigation of Equipment at Onagawa Unit1 after 8.16 Miyagi Offshore Earthquake
第6回
デﾕアルエルボにおける複雑流動構造の解明
著者:
矢内 宏樹,Hiroki YANAI,吉田 和弘,Kazuhiro YOSHIDA,結城 和久,Kazuhisa YUKI,戸田 三朗,Saburo TODA,河上 晃,Akira KAWAKAMI,秋葉 真司,Shinji AKIBA
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complex flow FAC multi-elbow s-shaped dual elbow
矢内 宏樹,Hiroki YANAI,吉田 和弘,Kazuhiro YOSHIDA,結城 和久,Kazuhisa YUKI,戸田 三朗,Saburo TODA,河上 晃,Akira KAWAKAMI,秋葉 真司,Shinji AKIBA
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complex flow FAC multi-elbow s-shaped dual elbow
Relatively a large number of pipe failures in a nuclear power plant occur in a multi-component region such as the bends, the orifices and so on. Especially, it has been reported that FAC (Flow Accelerated Corrosion) frequently occurs in a multi-elbow. In this study, therefore, a complex flow structure in a s-shaped dual elbow is observed by using a PIV system to clarify the flow structure. The diameter of the elbow D is 56mm and the curvature radius rate y (=R/D,where Re is a curvature radius) is 1.5. A f...
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Clarification of complex flow structure in dual elbow
英字タイトル:
Clarification of complex flow structure in dual elbow
第6回
東北電力の原子力発電所における配管肉厚管理の概要
著者:
秋葉 真司,Shinji AKIBA,丹治 和宏,Kazuhiro TANJI,河上 晃,Akira KAWAKAMI
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Erosion Pipe Wall Thickness Management Pipe Wall Thinning
秋葉 真司,Shinji AKIBA,丹治 和宏,Kazuhiro TANJI,河上 晃,Akira KAWAKAMI
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Erosion Pipe Wall Thickness Management Pipe Wall Thinning
Pipe wall thinning is an aging process that has a significant effect on the safety and safe operation of power plants and its appropriate management is an issue common to a ll electric power companies. Tohoku Electric Power Co., Inc. has been putting an emphasis on pipe wall thickness management since 2006, when a through-hole possibly due to droplet-impact erosion was found in the vent piping of high-pressure feedwater heater No.2 at Onagawa Nuclear Power Station unit 2. Following this incident, extensive...
英字タイトル:
Overview of Pipe Wall Thickness Management at Tohoku Electric Power
英字タイトル:
Overview of Pipe Wall Thickness Management at Tohoku Electric Power
第6回
超高速二相流によりオリフィス下流域に発生するエロージョン現象の解明（２）
著者:
梅原 真弘,Masahiro UMEHARA,阿部 祐子,Yuko ABE,結城 和久,Kazuhisa YUKI,戸田 三朗,Saburo TODA,秋葉 真司,Shinji AKIBA
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Erosion Flow Accelerated Corrosion(FAC) Liquid Droplets Impingement(LDI) Orifice Two-Phase Flow Wall Thinning
梅原 真弘,Masahiro UMEHARA,阿部 祐子,Yuko ABE,結城 和久,Kazuhisa YUKI,戸田 三朗,Saburo TODA,秋葉 真司,Shinji AKIBA
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Erosion Flow Accelerated Corrosion(FAC) Liquid Droplets Impingement(LDI) Orifice Two-Phase Flow Wall Thinning
Pipe wall thinning is one of the most important technical problems in nuclear power plants. For example, the wall thinning occurs by two-phase flow at both the orifice downstream and the first elbow located downstream after the orifice. In this study, a visualization experiment was conducted in order to clarify the detailed mechanism of the wall thinning by erosion (LDI is expected) in the piping system consisting of an orifice, a straight pipe and an elbow.In the experiment a strong pressure at the down ...
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Analysis (2) of Liquid Droplets Impact Erosion at the orifice downstream area caused by supersonictwo-phase flow
英字タイトル:
Analysis (2) of Liquid Droplets Impact Erosion at the orifice downstream area caused by supersonictwo-phase flow