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第12回
冷却孔周辺からの熱疲労き裂の初期成長
著者:
岡崎 正和,Masakazu OKAZAKI,関原 傑,Masaru SEKIHARA
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キーワードタグ:
It is important to get basic understandings on early stage crack propagation behavior around the cooling holes machined in high temperature hot section components in advanced gas turbine system. For the purpose a new testing system has been developed in this work. By means of the test system the thermo-mechanical fatigue (TMF) crack propagation tests were carried out specifying a directionally solidified Ni-base superalloy specimen in which some cooling holes were introduced in the gauge section part o...
英字タイトル:
Early Growth Behavior of Crack Originated from Cooling Holes during Thermo-Mechanical Fatigue Loadings.
第12回
凝固シミュレーション技術を活用した異材継手部の 超音波探傷シミュレーション
著者:
古川 敬,Takashi FURUKAWA,上山 芳教,Yoshinori KAMIYAMA,水野 亮二,Ryoji MIZUNO
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Abstract Ultrasonic testing (UT) is the most appropriate non-destructive testing because of capabilities for detection and depth sizing of flaw. But it is generally said that the flaw detection in austenitic weld is difficult because of dispersion and attenuation of the ultrasonic wave.UT simulation is a very useful technique for understanding the phenomena in the propagation of ultrasonic wave and for evaluating the UT results.On UT simulation for weld used austenitic welding material, modeling of co...
英字タイトル:
UT simulation of dissimilar metal weld joint utilizing solidification simulation technique
第12回
原子力の安全性向上のためのコミュニケーション・プラットフォーム
著者:
近藤 寛子,Hiroko KONDO
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公開日:
Abstract (Times New Roman 10pt) should be about 150 words. Since severe accident was occurred at Fukushima-Daiichi Nuclear Power Plant, nuclear industry has lost trust from public. The nuclear communities including government and operators have been engaged in public communications. The nature of the communication were “correct information”, “to provide as soon as possible”, “easy to understand”. If the communities have necessity to recover public trust, they have to consider the different communicati...
英字タイトル:
Information Platform to Enhance Safety on Nuclear Power Plants
第12回
原子力安全と検査の関係に関する検討（第２報）
著者:
青木 孝行,Takayuki AOKI,高木 敏行,Toshiyuki TAKAGI
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In this study, a relationship between nuclear safety and inspection/monitoring was discussed. As a result of consideration, the followings were made clear. (1) Nuclear safety is secured by the combination of safety functions of nuclear plant system and plant managements by the human system including plant operator’s organization. (2) Nuclear plant systems should be managed for each safety system because safety functions are fulfilled for each safety system. (3) The integrity of concerned system in th...
英字タイトル:
Study of the relationship between nuclear safety and inspection (The second report)
第12回
原子力発電所の保守管理規程/指針（JEAC4209/JEAG4210）の改定
著者:
浦野 隆嗣,Takashi URANO,長谷川 彰,Akira HASEGAWA,梅岡 貴志,Takashi UMEOKA,堀水 靖,Yasushi HORIMIZU
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Principles of Nuclear Power Station's maintenance was established as Code for Maintenance at Nuclear Power Plants (JEAC 4209) in 2003 and revised in 2007 And also Guide for Maintenance at Nuclear Power Plants was established in 2007. Recently these Code & Guide are revised accordingly and published as JEAC4209-2014 and as JEAG 4210-2014. Points of these revisions are to reflect the new regulations, to implement the results of Aging Management Analysis, to promote use of Performance Indicator, and enhan...
英字タイトル:
Revision of Code and Guide for Maintenance at Nuclear Power Plants
第12回
原子力発電所へのピグライニング工法の適用検討
著者:
寺尾 圭論,Yoshinori TERAO,永田 純也,Junya NAGATA,本棒 享子,Kyoko HONBO
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Pig-Lining method is a spot pipe lining method, and is known as one kind of piping repairment for water and sewer services. This method enables us to execute of actual spot works in short period. In order to examine the feasibility of this method for nuclear power plant, we checked the radiation resistant and other properties of lining materials formed by this method. In case of mechanical property tests, we adopted specialized accelerated-aging tests for organic materials. It was confirmed that there ...
英字タイトル:
Feasibility Study of Pig-Lining Method for Nuclear Power Plant
第12回
原子炉圧力容器の保全活動高度化に関する研究
著者:
中筋 俊樹,Toshiki NAKASUJI,山本 泰功,Yasunori YAMAMOTO,阮 小勇,Xiaoyong RUAN,森下 和功,Kazunori MORISHITA
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In Japan, the government decided that nuclear power was used as one of the energy sources for base load energy. Nuclear power plants are required more safety. The plant safety have kept since the start of operation due to the maintenance. Since the maintenance plan should be continued improving, there is still issues for improvement in the plan. In this study, we systematize the methods of the plant maintenance. We review the maintenance plan of reactor pressure vessel and fuel cladding tube and indic...
英字タイトル:
Advanced maintenance methodology was developed for the keeping integrity of reactor pressure vessel
第12回
原子炉圧力容器の健全性評価手法の高度化について
著者:
宇野 隼平,Shumpei UNO,勝山 仁哉,Jinya KATSUYAMA,勝又 源七郎,Genshichiro KATSUMATA,眞崎 浩一,Koichi MASAKI,小坂部 和也,Kazuya OSAKABE,李 銀生,Yinsheng LI
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Assuring the structural integrity of a reactor pressure vessel (RPV) is known as one of the critical issues to maintain the safe long-term operation of a nuclear power plant. Authors have been conducting extensive research on the improvement of structural integrity assessment methods of RPVs. In this paper, we describe some research results obtained from the recent activity including the review on the technical background of the methods and study on probabilistic methods for the applicability to the cu...
英字タイトル:
Study on Structural Integrity Assessment of Reactor Pressure Vessels
第12回
原子炉格納容器内部調査装置の開発および実証 ～ 形状変化型ロボット ～
著者:
岡田 聡,Satoshi OKADA,石澤 幸治,Koji ISHIZAWA,高橋 良知,Yoshinori TAKAHASHI
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Abstract: Shape changing robot was developed for a narrow space installation and a rough plane stable movement in severe environment. This robot consists of three parts of the slim main body and two crawlers attached to the both ends. When this robot moves a narrow space, three parts lie in a straight line like “I” shape and when the robot moves on a rough plane, three parts are formed like “U” shape. We minimized the use of electric parts in the main body against high temperature and high radiation en...
英字タイトル:
Result of Site Test for Investigation Robot for inside Primary Containment Vessel of 1F-1 - Shape Changing Robot -
第12回
地層処分のリスクコミュニケーションを可能にするために
著者:
杉山 憲一郎,Ken-Ichiro SUGIYAMA
発刊日:
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キーワードタグ:
The risk of climate change has been increasing because of the increase of CO2 emission from fossil fuel burning for world-wide energy demand. We are therefore required the utilization of safety-enhanced NPPs, which includes the strategy of energy security and the realization of disposal site for high-level-radioactive waste. This presentation related to public acceptance for the disposal site shows some characteristics and facts of active fault and earthquake motion useful for the risk communication. ...
英字タイトル:
Information Useful for Risk Communication on HLRW-Disposal
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