189件が見つかりました。

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第16回
電磁超音波共鳴法を用いた配管減肉の評価可能性
著者:
岩田 大輝,武田 翔,内一 哲哉,廣瀬 悠一,遊佐 訓孝,高木 敏行,（東北大）
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キーワードタグ:
Electromagnetic acoustic resonance (EMAR) method is used for online evaluation of pipe-wall-thinning. In this study, the thickness of the specimens corroded under various conditions is evaluated by EMAR. The thickness is estimated applying the superposition of n th compression (SNC) method to the signals obtained from EMAR. The error of thickness evaluation is investigated in view of thinning shape and the roughness caused by corrosion. As a result, it is suggested that the shape on the order of mm does not...
英字タイトル:
Study of evaluation accuracy of pipe-wall-thinning using electromagnetic acoustic resonance
第16回
高温・高塩化物濃度・強アルカリ環境下における構造材への影響評価
著者:
川井 貴弘,安田 光博,松田 真一,石原 康平,（中部電力）,新井 拓,谷 純一,（電中研）
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The water of Suppression pool at severe accident has become a hot, high chloride ion concentration and strong alkaline because of exhaust of the reactor heat, the melted cable, and pH controller. The equipment using the water has wetted part made stainless, therefore there is a possibility that SCC because of chloride ion occurs this wetted part. However, alkaline environment may reduce a possibility the SCC although poor knowledge. As such we examined the effect of structural material in a hot, high chlori...
英字タイトル:
Effect assessment of structural material in a hot, high chloride ion concentration, and strong alkaline environment
第16回
高精度な損傷蓄積則構築のためのメゾ空間スケールモデル構築
著者:
小菅 寛輝,沖田 泰良,村山 英晶,川畑 友弥 ,（東京大)
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In many cases, the function loss by fatigue and fracture is considered as the ultimate condition of the artificial structure. While various CAE technologies have been developed, a high-precision calculation algorithm has been developed for material damage during repeated loading, which is assumed to be difficult to describe in a digital twin in a computer virtual space. To make high precision evaluation, material damage from cyclic pre-strain is investigated. Then, material damage depends on not only equiva...
英字タイトル:
Construction of a meso-space scale model for constructing a high-precision damage estimation rule
第16回
高線量環境下に於ける低床式台車による遠隔搬送工法について
著者:
松村 匠,南山 彰男,岡村 祥典,三輪 泰寛,（三菱重工）
発刊日:
公開日:
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To remove fuel debris accumulated in pressure containment vessel (PCV) of Fukushima Daiichi Nuclear Power Plant, detail investigation of PCV inside will be performed by an investigation equipment called the “Arm Enclosure” designed in order to reveal the characteristic of the fuel debris before performing the removal of fuel debris. MHI is developing a remote control transportation system for the Arm Enclosure which is 30ton and 9m to ensure heavy load operation under high-radiation and narrow space conditi...
英字タイトル:
Remote control transportation system by low body dolly
第16回
高速増殖原型炉「もんじゅ」-保守の軌跡と成果-
著者:
仲井 悟,金子 義久,（JAEA）
発刊日:
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Prototype fast breeder reactor "Monju" accumulated maintenance, the repair experience more than 25 years after a test operation and got the knowledge that became extremely useful for the design of the fast reactor and operation and maintenance in the future. A maintenance program was introduced as a fast reactor power plant at the Stage of Research and Development, and problems such as the maintenance management became clear and examined the way of the maintenance management based on these experiences....
英字タイトル:
Maintenance history and result of the prototype fast breeder reactor "Monju"
第16回
高速増殖原型炉もんじゅの点検期間に関する課題の分析　～(1)プラントの運用方法に関する分析?
著者:
橋立 竜太,豊田 晃大,高橋 慧多,矢田 浩基,高屋 茂,（JAEA）
発刊日:
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In order to achieve both safety and economic efficiency of a nuclear power plant, it is necessary to realize rational maintenance based on characteristics of the plant. The fast breeder prototype reactor, Monju, spent most of the year for the maintenance. It is important to identify causes of the prolonged maintenance of Monju and to investigate countermeasures for implementation of rational maintenance of a next fast reactor. In this study, causes of the prolonged maintenance of Monju during reactor cold s...
英字タイトル:
Analysis of issues related to maintenance period of the fast breeder prototype reactor Monju (1) Analysis of plant operation for maintenance of cold shutdown Monju
第16回
高速増殖原型炉もんじゅの点検期間に関する課題の分析　～(2)保全計画の分析?
著者:
豊田 晃大,橋立 竜太,高橋 慧多,矢田 浩基,高屋 茂,（JAEA）
発刊日:
公開日:
キーワードタグ:
In order to achieve both safety and economic efficiency of a nuclear power plant, it is necessary to realize rational maintenance based on characteristics of the plant. The fast breeder prototype reactor, Monju, spent most of the year for the maintenance. It is important to identify causes of the prolonged maintenance of Monju and to investigate countermeasures for implementation of rational maintenance of a next fast reactor. In this study, causes of the prolonged maintenance of Monju during reactor cold s...
英字タイトル:
Analysis of issues related to maintenance period in the fast breeder prototype reactor Monju (2) Analysis of plant maintenance plan
第16回
高速炉の最適点検工程スケジューリングに関する基礎的検討
著者:
鈴木 正昭,伊藤 真理,（東京理科大）,橋立 竜太,高橋 慧多,矢田 浩基,高屋 茂,（JAEA）
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To achieve the reasonable and effective maintenance of nuclear power plants, it is essential to optimize the aging management from the viewpoints of both safety and efficiency. We propose an inspection-process-scheduling model that minimizes the number of inspection activities in a fast reactor. In this study, we formulate the inspection-process-scheduling problem as mixed integer programming and 0- integer programming problem....
英字タイトル:
Fundamental Study on Optimal Scheduling of Inspection Process for Fast Reactor
第16回
３６０°映像を利用したパトロールシステムの開発
著者:
尾崎 健司,大島 朋美,相川 徹郎,金子 智一,畠山 誠,吉田 光明,亀井 政昭,（東芝ESS）
発刊日:
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キーワードタグ:
From a viewpoint of safe operation and the improvement in an operating ratio of equipment, Efficient maintenance engineering and inspection work is needed. Therefore, we developed a patrol system using 360-degree camera and self-localization technology. A 360-degree camera which can photo the image of all the directions was used for this system. It can record the spherical image of an inspection worker, and enables the inspection image of the direction to need. Moreover, early detection of change of an on-s...
英字タイトル:
Development of a Patrol System using 360-degree view
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