114件が見つかりました。

並び替え
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第13回
-社会と共に考える原子力安全-
著者:
宮野 廣,Hiroshi MIYANO,村松 健,Ken MURAMATSU,松本 昌昭,Masaaki MATSUMOTO
発刊日:
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キーワードタグ:
Nuclear reaction with enormous energy, as a rich source of energy that has been brought to the human race, have developed as a nuclear power. However, the nuclear power generation is intended to provide a basic inherent “radioactivity risk“, the accident in Fukushima Dai-ichi Nuclear Power Plant was allowed to elicit it. Design, operation, and must be addressed to ensure safety measures in accordance with the role in the disaster areas. Prevention of abnormal event occurs, the enforcement of the mitiga...
英字タイトル:
Nuclear safety to think with the society
第13回
316ステンレス鋼の大気中疲労き裂発生モデルの検討
著者:
石澤 輝士,Terushi ISHIZAWA,北田 孝典,Takanori KITADA,中村 隆夫,Takao NAKAMURA,釜谷 昌幸,Masayuki KAMAYA
発刊日:
公開日:
The purpose of this study is to generalize P-curve for strain range condition focusing on crack initiation life and crack growth life. The fatigue tests under different constant strain range conditions were conducted in air and the observation of fatigue cracks on specimen surface was also conducted. Using data derived from experiment, dispersion of cry using two-parameter Weibull distribution. Furthermore, the relationship between strain range and shape parameter or scale parameter of crack initiation mo...
英字タイトル:
Study on fatigue crack initiation model in air for type 316 stainless steel
第13回
3DCADモデルに基づく廃止措置エンジニアリング支援 Decommissioning Engineering Support based on 3D CAD Models
著者:
今村 光孝,Mitsutaka IMAMURA,北原 隆,Takashi KITAHARA
発刊日:
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The estimation methods for waste quantity were developed based on three dimensional models for nuclear power plants toward the decommissioning projects. Based on a 3D CAD platform, spatial distribution of dose rate surrounding piping components and equipment is visualized and the number of containers required to store waste objects are counted. Due to functions of the mapping of radioactive inventory to 3D objects, automatic calculation of the dose rate and generation of waste container model, we conf...
第13回
AEセンサを用いたメカニカルアンカの非破壊検査技術の開発 2
著者:
匂坂 充行,Mitsuyuki SAGISAKA,松永 嵩,Takashi MATSUNAGA,小川 良太,Ryota OGAWA,鵜飼 康史,Yasufumi UKAI,礒部 仁博,Yoshihiro ISOBE
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キーワードタグ:
A new non-destructive inspection technique with using acoustic emission (AE) sensor for mechanical anchor bolt was developed for the purpose of overcoming problems originating in existing hammering test. The new technique enables us to obtain inspection results with little dependence on personal skills of a checker, and to judge the integrity of the bolts based on quantitative measurement results. The detectability to crack width on concrete was reported. From experimental results by using this techni...
英字タイトル:
Development of non-destructive inspection technique for mechanical anchor bolts using AE sensor 2
第13回
AEセンサを用いた鋼棒、鋼管の健全性評価技術の開発 2 (2) 理論的検討
著者:
小川 良太,Ryota OGAWA,松永 嵩,Takashi MATSUNAGA,匂坂 充行,Mitsuyuki SAGISAKA,鵜飼 康史,Yasufumi UKAI,礒部 仁博,Yoshihiro ISOBE
発刊日:
公開日:
キーワードタグ:
A new inspection technique using AE (acoustic emission) sensor has been developed for the purpose of evaluating the integrity of steel rods and pipes, and sensitivity analyses were made for degradations of steel rods and pipes from a theoretical viewpoint. Inner surface corrosion model of the piping changing the corrosion contents were simulated frequency distribution by dynamic analysis using the finite element method, and comparisons with experimental results obtained from mockups with simulated degr...
英字タイトル:
Development of a new inspection system for steel rod and pipe using AE sensor 2 (2) Theoretical approach
第13回
AEセンサを用いた鋼棒、鋼管の健全性評価技術の開発 2(1)実験的検討
著者:
松永 嵩,Takashi MATSUNAGA,小川 良太,Ryota OGAWA,匂坂 充行,Mitsuyuki SAGISAKA,鵜飼 康史,Yasufumi UKAI,礒部 仁博,Yoshihiro ISOBE
発刊日:
公開日:
キーワードタグ:
For evaluating the soundness of steel rods and pipes, which are installed in nuclear power plants, we have developed a new inspection system using an AE (acoustic emission) sensor. This report described the results of studies for the detection of defects in the steel pipe and steel rod using a new inspection system. ...
英字タイトル:
Development of a new inspection system for steel rod and pipe using AE sensor 2 (1) Experimental approach
第13回
ASME B&PV Code Section XI におけるシステム化規格概念に基づく Code Case の策定活動 Development of a Code Case Based on the System Based Code Concept for ASME Boiler and Pressure Vessel Code Section XI
著者:
高屋 茂,Shigeru TAKAYA
発刊日:
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This paper describes the outline of a Code Case that is being developed for ASME Boiler and Pressure Vessel Code Section XI Division 3, Rules for Inspection and Testing of Components of Liquid-Metal Cooled Plants. The logic flow of the Code Case has been developed using the System Based Code concept and the Code Case provides alternative inservice inspection programs to sodium-cooled fast reactor components based on safety considerations and structural reliability evaluations. ...
第13回
BWR使用済燃料貯蔵ラックの減衰特性評価
著者:
草階 達朗,Tatsuo KUSAKAI,飯田 純,Jun IIDA,長坂 直,Naoshi NAGASAKA,渡邊 和,Urara WATANABE,前田 学,Manabu MAEDA
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キーワードタグ:
The damping constant of the BWR spent fuel storage racks have been applied 1 % to evaluate seismic resistance, based on “Technical Guide for Seismic Design of Nuclear Power Plants” (JEAG 4601-1991) published by Japan Electric Association. Although some of nuclear operators in Japan that own similar racks have been applied 7% based on the past experiments results, the acceleration levels given to the racks were not high enough considering the scale of the current ground motion. Therefore, in order to co...
英字タイトル:
Damping Characteristic Evaluations of BWR Spent Fuel Storage Racks
第13回
Dy箔を用いた高ガンマ線環境下での中性子ラジオグラフィ法
著者:
中山 幸一,Kohichi NAKAYAMA,山本 修治,Shuji YAMAMOTO,日塔 光一,Koichi NITTO
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キーワードタグ:
As the neutron radiography method under the high gamma-ray environment, we inspected experimentally imaging methods which take the place of the indirect method of the film transcription. By the method of transcription from radioactivated Dy foil to imaging plate and the method of multiplication photography of the light from the scintillator which adhere to radioactivated Dy foil with a high sensitivity camera, we confirmed that we were able to observe the distribution of the neutron absorber with the c...
英字タイトル:
The neutron radiography method under the high gamma-ray environment using the Dy foil
第13回
EJAM New Technology の実績と状況
著者:
堂﨑 浩二,Koji DOZAKI,村井 荘太郎,Sotaro MURAI,野本 敏治,Toshiharu NOMOTO
発刊日:
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キーワードタグ:
Electronic Journal of Advanced Maintenance (EJAM) has been issued on the website of Japan Society of Maintenology (JSM) on May 25th, 2009. ‘New Technology’ (NT) is one of the EJAM categories, and introduces widely advanced techniques developed or modified for maintenance to developing countries of nuclear energy. EJAM NT has achieved to publish two or three articles in average by every three months for these seven years. In this paper, as well as classification and organization of relevant techniques in ...
英字タイトル:
Achievement of EJAM ‘New Technology’ and Its Status
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