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第15回
Nondestructive Evaluation for Small Plastic Deformation and Deformation Histories in Reduced-activation Ferritic/Martensitic Steels
著者:
何 曼如,内一 哲哉,高木 敏行,（東北大）,陳 振茂,（西安交通大）
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Magnetic Barkhousen Noise, Magnetic Incremental Permeability and Magnetic Flux Leakage methods are non-destructive evaluation methods for ferromagnetic materials. Reduced Activation Ferritic/Martensitic (RAFM) steel is a new kind of ferromagnetic material considered to be an important candidate structural material for thermal nuclear fusion reactors. The feasibility to use magnetic non-destructive evaluation techniques of MBN, MIP and MFL methods to evaluate the plastic strains in RAFM steel is experimental...
英字タイトル:
Nondestructive Evaluation for Small Plastic Deformation and Deformation Histories in Reduced-activation Ferritic/Martensitic Steels
第15回
PRAから想定される検査対象設備候補の検討
著者:
高橋 浩道,高田 洋祐,長谷川 悠,田中 太,（三菱重工）
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MHI (Mitsubishi Heavy Industry) is focusing on selection SSCs with using risk importance for new inspection system. In this paper, a trial use of new inspection guidance for selection SSCs is described....
英字タイトル:
A trial use of New Inspection Guidance for Selection SSCs with using Risk importance
第15回
Probability of detection analysis of ultrasonic NDT applied to austenitic stainless steel welds
著者:
Siqi Meng ,（東北大/ 青島科技大), Haicheng Song,Noritaka Yusa,Tetsuya Uchimoto,Toshiyuki Takagi ,（東北大) ,Yuanjin Ling,（青島科技大）,Hidetoshi Hashizume ,（東北大)
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This paper evaluated the probability of detection(POD) of austenitic stainless steel welds from the viewpoint of ultrasonic testing. It presents results of simulation-based POD curves of ultrasonic NDT. The simulation model based on a three-dimensional Finite Element Method (FEM) is presented to perform the data generation. Results of conventional POD considering the depth of flaw are given and the requirement of taking the length of flaw into considered is determined....
英字タイトル:
Probability of detection analysis of ultrasonic NDT applied to austenitic stainless steel welds
第15回
PWR環境中でのステンレス鋼の環境効果（レプリカ観察による亀裂発生・成長挙動の調査）
著者:
能勢 昂尚,北田 孝典,竹田 敏,中村 隆夫,（大阪大）,釜谷 昌幸,（INSS）
発刊日:
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キーワードタグ:
The purpose of this study is to investigate environmental effects on SUS316 in different strain rate condition. The fatigue tests were conducted under different strain rate (0.4%/s and 0.004%/s) in simulated PWR environment with interrupting tests and the effect of strain rate on crack growth rate was evaluated by the observation of test specimen surface. From the results of investigation, the followings were confirmed; ・The effect of strain rate on crack growth rate is larger in 0.004%/s than 0.4%/s. ・The ...
英字タイトル:
Environmental effect of stainless steel in PWR environment. (Investigation of Crack initiation and growth behavior by Replica Observation)
第15回
RIDM導入に向けたPRAの改善に係る四国電力の取り組み
著者:
矢野 達也,中川 俊一,松永 晃治,（四国電力）
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Shikoku Electric Power Co., INC. strives to improve further safety and reliability by implementing original safety measures based on the lessons learned not only before Fukushima-Daiichi NPP accident but also after the accident. In addition, we are making efforts to introduce Risk-Informed Decision Making (RIDM) aiming at continuous improvement of safety not limited to the regulatory framework. As an effort to improve Probabilistic Risk Assessment (PRA) to be utilized in RIDM, we implement “Ikata Unit 3 Pro...
英字タイトル:
Shikoku Electric Power's efforts to improve PRA for introducing RIDM
第15回
ROPの導入と事業者が果たすべき役割
著者:
爾見 豊,（関西電力）
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US regulatory inspection program ROP (Reactor Oversight Process) is successfully being operated for almost two decades. Japanese Nuclear Regulation Authority (NRA) decided to introduce very similar process into Japanese inspection system from 2020. For achieving safety and reducing unnecessary burden at the same time, ROP is designed to fully utilize risk informed schemes in its components, i.e. sampling of the inspection items, determining importance of the inspection findings, regulating the strength o...
英字タイトル:
Features of ROP and expected changes in Licensee’s activities
第15回
RPV胴板の内部亀裂に対する構造健全性評価
著者:
板谷 雅雄,新川 嘉英,（東芝ESS）,神長 貴幸,（東京電力HD）
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When quasi-laminar defects are detected in the RPV shell, these defects are modeled to single circular crack with a diameter of 2a and an angle of ? from RPV wall enveloping these micro-defects like as the model used in the structural integrity assessment for Doel-3. An acceptable crack size is investigated for fracture assessment and initial crack size considering the fatigue crack growth by 60 years operation due to the JSME Fitness-for-Service (FFS) code. It was found that the initial crack with 2a of 4%...
英字タイトル:
Structural Integrity Assessment for Internal Crack in RPV Shell
第15回
TDR技術を用いた炉内水位計の開発
著者:
林 司,谷川 稔,（中国電力）,中村 岳人,（GE日立NE）
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The water level in the nuclear reactor measures it by measuring the differential pressure of a vapor phase part and the liquid phase part in the nuclear reactor. However, the temperature in the storage container becomes the high temperature at the time of the SA such as the Fukushima accident, and the water in the datum level device evaporates, and nuclear reactor water level becomes immeasurable. We developed a technique to measure the water level in the direct furnace by applying TDR (time-domain reflecto...
英字タイトル:
Development of the Reactor water level measurement system using the TDR technology
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」原子力裁判の問題点と対応
著者:
堀池 寛,（福井工大）,鈴木 孝寛,（国際原子力法学会）,田中 治邦,（日本原燃）,宮野 廣,（法政大）,村田 貴司,（横浜市大）
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Nuclear power plants have been restarted, and trials on driving injunctions are being made in some places in Japan. As in the case of responding to Pyroclastic flow, the recent issue has shifted from the academic task to the inter-discipline problem between science and society, such as matching risk recognition with society. In the paper, we would like to explain the discussion points and find out the direction of solution by looking at some experiences and achievements in the areas other than nuclear secto...
英字タイトル:
Nuclear Power Trials, Issue and Arguments -To reduce risk of lawsuit-
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」原子力裁判の論点
著者:
堀池 寛,（福井工大）,鈴木 孝寛,（国際原子力法学会）,田中 治邦,（日本原燃）,宮野 廣,（法政大）,村田 貴司,（横浜市立大）
発刊日:
公開日:
キーワードタグ:
Nuclear power plants have been restarted, and trials on driving injunctions are being made in some places in Japan. As in the case of responding to Pyroclastic flow, the recent issue has shifted from the academic task to the inter-discipline problem between science and society, such as matching risk recognition with society. In the paper, we would like to explain the discussion points and find out the direction of solution by consolidating the opinions of law experts and experts in nuclear technology....
英字タイトル:
Nuclear Power Trials, Issue and Arguments -Why was a nuclear power plant stopped-
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