136件が見つかりました。

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第15回
「原子力発電所の再稼働差止への裁判所判断と課題」広島高裁伊方原子力発電所3号機差止仮処分決定について
著者:
安念 潤司,（中央大）,鈴木 孝寛,（国際原子力法学会）
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キーワードタグ:
Nuclear power plants have been restarted, and trials on driving injunctions are being made in various places. Regarding measures to cope with Pyroclastic flows, trials and the like have created several issues. From the eyes of justice, we analyze the arbitrage disposition provisional injunction of nuclear power plants and point out the points....
英字タイトル:
About Hiroshima High Court Ikata Nuclear Power Station Unit 3 Injunction provisional disposition decision
第15回
めっき厚測定のための渦電流試験と信号解析
著者:
小坂 大吾,守安 奎裕,柿下 和彦,（職能大）
発刊日:
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This paper is motivated by the desire to evaluate thickness of zinc layer on steel in a manufacturing process of zinc plating. We are trying to apply the eddy current testing for measuring thickness of a zinc layer with vibration. This paper shows simulated eddy current within specimens. These results demonstrate the possibility of making thickness measurements using an eddy current with high liftoff....
英字タイトル:
Eddy Current Testing and Signal Analysis for Plating Thickness Measurement
第15回
インバリアント分析技術(SIAT)を利用した非破壊検査の高度化
著者:
相馬 知也,（NEC）,高木 敏行,内一 哲哉,蔡 世超,（東北大）
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In non-destructive inspection, the probability of abnormality finding in image diagnosis, ECT inspection and so on depends mostly on skills of individuals. Therefore, training of inspectors is an important issue in the maintenance and management of facilities. This study aims at improving accuracy in nondestructive inspection by applying System Invariant Analysis Technology (SIAT) which is one of big data analysis techniques. The feasibility is confirmed by the experiment using ECT this time and it is repor...
英字タイトル:
Advanced nondestructive inspection using System Invariant Analysis Technology (SIAT)
第15回
ウェルドオーバーレイ工法の規格化に関する経緯
著者:
堂崎 浩二,（日本原電）,町田 秀夫,（TEPSYS）
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Weld Overlay is a typical technique which took many years and huge amount of efforts for standardization in Japan, though it had already been well-developed with many application examples abroad as one of the repair methods. There has not an application example in Japan at all in spite of many efforts. This paper keeps a record of some backgrounds on standardization process of the weld overlay in Japan so as to consider better processes in the future....
英字タイトル:
Some Backgrounds on Standardization of Weld Overlay Technique in Japan
第15回
オーステナイト系ステンレス鋼の 二軸応力下における配管部疲労き裂進展評価
著者:
原田 祥五,北田 孝典,竹田 敏,中村 隆夫,（大阪大）,釜谷 昌幸,（INSS）
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Nuclear power plants (NPPs) are required to ensure safety in long term operation under aging degradation. The fatigue degradation is one of the major ageing phenomena and is evaluated to ensure safety by design fatigue curve obtained by the results of axial fatigue test. On the other hand, the stress that occurs in piping element such as elbow is not uniaxial but biaxial. For accurate evaluation of fatigue crack growth, it is required to confirm the effect of biaxial stress. In this study, membranous pressu...
英字タイトル:
Study on the Behavior of Fatigue Crack Growth of Austenitic Stainless Steel Piping under biaxial Stress
第15回
ケーブル絶縁材の健全性診断に向けた非破壊検査システム開発
著者:
藤吉 宏彰,礒部 仁博,（原燃工）,川島 崇利,（関西電子ビーム）,浦島 千裕,鈎 忠志,（関西電力）
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Insulation degradation of cable insulation causes fire due to electric leakage. Cable insulating materials laid in nuclear power plants deteriorate over time, heat and influence of radiation. Here we investigated the degradation tendency of insulating materials by radiation irradiation by hammering inspection using AE sensor. As a result, for any cable insulation material, curing of insulating material with irradiation could be detected as a change in natural frequency. From here, the applicability of AE ha...
英字タイトル:
Development of nondestructive inspection system for soundness diagnosis of cable insulating material
第15回
コンクリート内埋設物の探査精度向上に関する電磁波レーダ法の信号処理技術の検討
著者:
岡部 克也,（四国総研）
発刊日:
公開日:
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A large number of important structures such as electricity conduits are buried in reinforced concrete such as walls and floors of nuclear power plants, and it is necessary to explore the buried objects etc. when carrying out a concrete chipping work. Although the electromagnetic wave radar method is widely used for exploration of buried objects, detection may be difficult depending on the arrangement of buried objects. As a countermeasure against this problem, a method of improving the buried object explora...
英字タイトル:
Investigation of signal processing technology for electromagnetic wave radar concerning exploration accuracy improvement of concrete buried objects
第15回
コンクリート構造物のASR診断方法に関する評価
著者:
江藤 淳二,（三菱総研）,五十嵐 豪,（東北大）,小川 彰一,渋谷 和俊,（太平洋コンサルタント）,丸山 一平,（名古屋大学）,山田 一夫,（国立環境研究所）,滝沢 真之,（三菱総合研究所）
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公開日:
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Recently, many concrete structures such as bridge piers of the highway, damaged by Alkali Silica Reaction (ASR) have been observed in Japan. From this background, based on the latest knowledge of domestic and international, the ASR diagnostic method that emphasizes the petrological examination after the core sampling was proposed on Japan Nuclear Energy Safety Organization (JNES) report. In this research, in order to confirm the effectiveness of ASR diagnostic method for concrete structures proposed in JNES...
英字タイトル:
Evaluation on ASR diagnostic method for concrete structures
第15回
ジオポリマーを活用した燃料デブリ取り出し工法の提案（その2）
著者:
鈴木 俊一,岡本 孝司,酒井 泰地,（東京大）
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The mission of decommissioning of Fukushima Dai-ichi NPP is the long-term, complicated and difficult task. In this paper, a new method to retrieve fuel debris using geopolymer will be discussed....
英字タイトル:
A new method of fuel debris retrieval with geopolymer for Fukushima Dai-ichi NPP (Phase-2)
第15回
ナトリウム中ルースパーツ回収装置の試作及び基礎試験
著者:
上田 雅司,石黒 貴寛,（JAEA）,服部 終始,服部 司,（服部鉄工）,白浜卓馬,（NESI）
発刊日:
公開日:
キーワードタグ:
Sodium-cooled fast reactors need special maintenance technologies such as remote maintenance, under sodium viewer etc., because sodium is opaque, chemically active and the maintenance works must be performed in high temperature. To acquire basic knowledge for remote maintenance technology in liquid sodium, a trial product of recover device for loose parts was fabricated and tested in sodium. The positions of loose parts were approximately estimated by using ultrasound, and the parts were recovered by the de...
英字タイトル:
Trial fabrication and basic test of a recovery device for loose parts in liquid sodium
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