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第11回
銀ゼオライトを用いた高除染性フィルターベントシステムの開発
著者:
奈良林 直,Tadashi NARABAYASHI,藤井 康弘,Yasuhiro FUJII,石井 翼,TasuNu ISHII,千葉 豪,Go CHIBA,辻 雅司,Masashi TSUJI
発刊日:
公開日:
キーワードタグ:
FuNushima Daiichi NPP accident would be terminated, if sufficient accident countermeasures, such as water proof door, mobile power, etc. In case of Europe, it had already installed the heat removal system and filtered containment venting system (FCVS) from the lessons o f TMI and Chernobyl Accidents. Decay heat removal system and CV spray cooling system with FCVS are ensured by using mobile generators and heat exchangers to Neep the ultimate heat sinN even in any natural disaster, such as large earthquaNe,...
英字タイトル:
Development of High Efficiency Filtered Containment Venting System by using AgX
第11回
長尺配管内壁面広域一括探傷のための マイクロ波探傷法の開発
著者:
橋爪 秀利,Hidetoshi HASHIZUME,佐々木 幸太,Kota SASAKI,遊佐 訓孝,Noritaka YUSA
発刊日:
公開日:
キーワードタグ:
This paper reports research activities in the authors’ group to develop a novel non-destructive testing method using a microwave to quickly inspect the inner surface of a pipe. The method propagates a microwave inside a pipe to detect anomalies appearing the inner surface on the basis of the reflection of the microwave due to the anomalies. Because the method does not require probe scanning unlike conventional non-destructive testing methods such as eddy current testing, it can inspect a long pipe quit...
英字タイトル:
Development of a non-destructive testing method for a long-range inspection of the inner surface of a long pipe
第11回
関西電力における原子力発電所の安全性向上対策について
著者:
田中 俊彦,Toshihiko TANAKA,笹川 直樹,Naoki SASAGAWA,小松 邦嘉,Kuniyoshi KOMATSU,辻 義直,Yoshinao TSUJI,上山 逸平,Ippei UEYAMA
発刊日:
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キーワードタグ:
After the Fukushima-daiichi accident, the KANSI Electric Power has implemented various safety measures against severe accident for nuclear power plants. In this paper, we w ill explain about overview of measures and internal flooding because of the high energy line break. The high energy line break may cause common mode failure like a fire (mu ltiplexed and diversified protection system may fail at same time by a single piping break). Therefore we have to take all possible measures for the prevention from ...
英字タイトル:
Safety measures for severe accident on the KANSAI nuclear power plants
第11回
電磁誘導法による肉厚測定技術の開発（その１） -保温材付き配管への適応-
著者:
高倉 一真,Kazuma TAKAKURA,小林 雅弘,Masahiro KOBAYASHI,出井 義純,Gijun IDEI,貝塚 眞生,Masao KAIZUKA
発刊日:
公開日:
キーワードタグ:
Electro-Magnetic Induction Testing method is widely used in the industries. However, due to the deterioration of sensitivity by increase of Lift-Off (distance between sensor and test piece) and the limitation of penetration of magnetic flux into thick magnetic and conductive material such as carbon steel, its application is limited to comparative testing between sound and defective samples. The newly developed system enables the measurement of wall thickness and the detection of inner-surface defects ...
英字タイトル:
Development of Measuring Techniques of Thick Wall Samples by Electro-Magnetic Induction (Part 1) - An Application for Pipes covered by Thermal Insulator -
第11回
電磁誘導法による肉厚測定技術の開発（その２） -加熱ジャケット付き容器への適用-
著者:
小泉 英明,Hideaki KOIZUMI,稲熊 正彦,Masahiko INAKUMA,加納 洋一,Yoichi KANO,菊池 英樹,Hideki KIKUCHI,小林 雅弘,Masahiro KOBAYASHI,高倉 一真,Kazuma TAKAKURA,出井 義純,Gijun IDEI
発刊日:
公開日:
キーワードタグ:
Eddy Current Testing (ECT) is widely used in the industries. However, ECT normally uses certain high frequency range, therefore its application is limited to detect surface- or near surface defects. Strength of the electro-magnetic flux decreases exponentially in penetrating into the samples, and its rate is a function of conductivity, permeability and thickness of the samples and the frequency in use. Therefore, conventional ECT is difficult to detect inner surface defects or measure the thickness of...
英字タイトル:
Development of Measuring Techniques of Thick Wall Samples by Electro-Magnetic Induction (Part 2) - An Application for Vessels with Heating Jacket -
第11回
電磁超音波共鳴法を用いた配管減肉検査における底面形状の影響
著者:
浦山 良一,Ryoichi URAYAMA,ジョン マンチョル,Jeong Man Chul,原 翔一郎,Syoichiro HARA,高木 敏行,Toshiyuki TAKAGI,内一 哲哉,Tetsuya UCHIMOTO,丹治 和宏,Kazuhiro TANJI
発刊日:
公開日:
キーワードタグ:
Electromagnetic acoustic transducer (EMAT) provides non-contacting measurements and is often applied to monitoring in high temperature environment. Electromagnetic acoustic resonance method (EMAR) is transmits an ultrasonic burst wave, and the driving frequency of bust wave is swept. Then signal amplitude of each frequency is computed by the superheterodyne processing at the interval. Pulse-EMAR method is transmits an ultrasonic pulse wave propagating, but the pulse wave is not swept. Then echo waves recei...
英字タイトル:
Influence of bottom shape in the pipe wall thinning inspection using an electromagnetic acoustic resonance method
第11回
非常用復水器を用いた原子炉減圧・冷却システム
著者:
奈良林 直,Tadashi NARABAYASHI,下江 知弘,Tomohiro SHIMOE,秋本 肇,Hazime AKIMOTO,千葉 豪,Go CHIBA,辻 雅司,Masashi TSUJI,坂下 弘人,Hiroto SAKASHITA
発刊日:
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キーワードタグ:
In this study, we aimed to quantitatively evaluate cooling capacity of isolation condenser (IC) for core cooling in FuNushima Daiichi Nuclear Plant Unit 1. In order to evaluate cooling capacity, decay heat em ted from fuels in reactor core was calculated. We used the data of nuclear fuel and rated thermal power which is released by TEPCO. We analyzed IC with TRAC code. We made an experiment in order to checN IC’s input data. Because analysis data is close to experimental data, we made sure validity of inpu...
英字タイトル:
Evaluation on Decay Heat Removal Capability of Isolation Condenser for Depressurization and Cooling System
第11回
高レベル廃液ガラス固化設備のアクティブ試験の状況
著者:
山崎 淳司,Atsushi Yamazaki,福井 寿樹,Toshiki Fukui
発刊日:
公開日:
キーワードタグ:
高レベル廃液ガラス固化設備のアクティブ試験については、モックアップ試験装置を用いたコールド 試験を2年間実施し、その成果を実機に反映することで、ガラス溶融炉の設備・運転方法の改善を図 った。さらに、使用前検査の検査前条件としてガラス固化試験を実施し、ガラス溶融炉の安定運転と 性能が確認できたことから、操業後の長期安定運転の見通しを得た。 六ヶ所再処理工場は、試験運転の最終段階となるアク ティブ試験(使用済燃料を用いた試験)を2006年3月か ら開始し、主要工程であるせん断、溶解、抽出等の性能 確認は終了し、ガラス固化設備に関する試験を残すのみ となっている。ガラス固化設備は、通水作動試験、化学試験の試 を経て、アクティブ試験の最終段階にある。...
英字タイトル:
The situation of the active test of Rokkasyo Vitrification Facility
第11回
高速増殖原型炉「もんじゅ」の保全の在り方 ‐「もんじゅ」保全の特徴と軽水炉保全経験の反映‐
著者:
仲井 悟,Satoru NAKAI,西尾 竜一,Ryuichi NOSHIO,内橋 昌也,Masaya UCHIHASHI,金子 義久,Yoshihisa KANEKO,山下 裕宣,Hironobu YAMASHITA,青木 孝行,Takayuki AOKI
発刊日:
公開日:
キーワードタグ:
A sodium cooled fast breeder reactor (FBR) has unique systems and components and different degradation mechanism from light water reactor (LWR) so that need to establish maintenance technology in accordance with its features. The examination of the FBR maintenance technology is carried out in the special committee for considering the maintenance for Monju established in the Japan Society of Maintenology (JSM). As a result of the study such as extraction of Monju maintenance feature, maintenance technol...
英字タイトル:
Principles of MONJU Maintenance - Characteristic of MONJU maintenance and reflection of LWR maintenance experience to FBR-
第11回
高速増殖原型炉「もんじゅ」の保全の在り方 ‐高速増殖炉劣化メカニズムの整理‐
著者:
山下 裕宣,Hironobu YAMASHITA,山口 篤憲,Atsunori YAMAGUCHI,青木 孝行,Takayuki AOKI
発刊日:
公開日:
キーワードタグ:
Because a fast breeder reactor (FBR) uses sodium as a coolant and there exist systems and components unique to FBR, aging phenomena to be considered in FBR are quite different from ones in a light water reactor (LWR). Therefore it is required to make a maintenance plan for FBR by considering the characteristics of FBR. In the Japanese LWRs, aging phenomena which occur in every part of all safety-related components have been extracted based on the O&M experiences and the technical evaluation on aging pheno...
英字タイトル:
Principles of MONJU Maintenance - Ageing phenomena of FBR for maintenance-
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