更新情報
第3回
Detection of EDM Defects Under Monju Support Plate Using Experimental Data from Remote Field Eddy Current Probes and a Multi-frequency Algorithm
著者:
Ovidiu MIHALACHE,Toshihiko YAMAGUCHI,Masashi UEDA,Center Takuya YAMASHITA,
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EDM Outer Defect Monju FBR Support Plate Remote Field Eddy Current Steam Generator
Ovidiu MIHALACHE,Toshihiko YAMAGUCHI,Masashi UEDA,Center Takuya YAMASHITA,
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EDM Outer Defect Monju FBR Support Plate Remote Field Eddy Current Steam Generator
This paper describes detection of electro-discharged machine (EDM) defects in magnetic steam generator (SG ) tubes of Monju fast breeder reac tor (FBR). The EDM defects are located under support plate (SP), on the outer tube surface and they are detected by a remote field eddy curre nt probe. Using the experimental measurements and a multi frequency algorithm, the defect signal can be extracted from the SP signal. The pa rameters of the multi-frequency algorithm were calculated by comparing SP measurements...
英字タイトル:
Detection of EDM Defects Under Monju Support Plate Using Experimental Data from Remote Field Eddy Current Probes and a Multi-frequency Algorithm
英字タイトル:
Detection of EDM Defects Under Monju Support Plate Using Experimental Data from Remote Field Eddy Current Probes and a Multi-frequency Algorithm
第3回
もんじゅ」原子炉容器 ISI システムの開発
著者:
田川 明広,Akihiro TAGAWA,岡本 久彦,Hisahiko OKAMOTO,上田 雅司,Masashi UEDA,山下 卓哉,Takuya YAMASHITA
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CCD Camera D simulation EMAT FBR ISI MONJU Reactor Vessel
田川 明広,Akihiro TAGAWA,岡本 久彦,Hisahiko OKAMOTO,上田 雅司,Masashi UEDA,山下 卓哉,Takuya YAMASHITA
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CCD Camera D simulation EMAT FBR ISI MONJU Reactor Vessel
This paper describes the development of a new inspection robot and support system used for the in-service inspection (ISI) of the reactor vessel of the FBR MONJU. The inspection is carried o ut using a CCD camera for visual tests and an EMAT for volumetric tests at elevated temperature (200 degree C) and high irradiation dose condition (10Sv/hr). The applicability of a commercia l CCD camera and an EMAT have been confirmed by experiments under severe conditions. In addition, reduction of the robot weight f...
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Development of ISI system for FBR MONJU reactor vessel
英字タイトル:
Development of ISI system for FBR MONJU reactor vessel
第5回
ハイブリット計測による配管ヘルスモニタリング法
著者:
田川 明広,Akihiro TAGAWA,上田 雅司,Masashi UEDA,宮原 信哉,Shinya MIYAHARA,山下 卓哉,Takuya YAMASHITA
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パルスエコー法、電磁共鳴法 ヘルスモニタリング ハイブリット計測 電磁超音波
田川 明広,Akihiro TAGAWA,上田 雅司,Masashi UEDA,宮原 信哉,Shinya MIYAHARA,山下 卓哉,Takuya YAMASHITA
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パルスエコー法、電磁共鳴法 ヘルスモニタリング ハイブリット計測 電磁超音波
This paper describes the development of a new sensor for the pipe health monitoring. The Hyb rid measuring using EMAT was made as a trial. It examined and checked that it could measure....
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The pipe health monitoring method by Hybrid measurement using ultrasonic
英字タイトル:
The pipe health monitoring method by Hybrid measurement using ultrasonic
第5回
伝熱管内壁検査補修技術開発の概要
著者:
西村 昭彦,Akihiko NISHIMURA,岡 潔,Kiyoshi OKA,山口 智彦,Toshihiko YAMAGUCHI,山下 卓哉,Takuya YAMASHITA,田川 明広,Akihiro TAGAWA,ミハラケ オビデウ,Ovidiu MIHALACHE,島田 幸洋,Ukihiro SHIMADA
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Eddy Current Testing Fast Breeder Reactor Heat Exchanger Laser Processing
西村 昭彦,Akihiko NISHIMURA,岡 潔,Kiyoshi OKA,山口 智彦,Toshihiko YAMAGUCHI,山下 卓哉,Takuya YAMASHITA,田川 明広,Akihiro TAGAWA,ミハラケ オビデウ,Ovidiu MIHALACHE,島田 幸洋,Ukihiro SHIMADA
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Eddy Current Testing Fast Breeder Reactor Heat Exchanger Laser Processing
A hybrid optical fiber scope and a laser processing head were combined with an eddy current testing un it for the inspection and repairing for Fast Breeder Reactor's heat exchanger pipes. The project propo ses an effective cost reduction method for maintenance of FBR by extension of the heat exchanger's lif etime. By the end of March 2010, a prototype probing system for heat exchanger pipes will be completed....
英字タイトル:
Development of Inspection and Repairing Technology for FBR Heat Exchanger Pipes
英字タイトル:
Development of Inspection and Repairing Technology for FBR Heat Exchanger Pipes
第6回
伝熱管内壁検査補修技術開発(その2)ソフトウエア開発と性能試験準備
著者:
西村 昭彦,Akihiko NISHIMURA,岡 潔,Kiyoshi OKA,山口 智彦,Toshihiko YAMAGUCHI,赤津 朋宏,Tomohiro AKATSU,関 健史,Takeshi SEKI,ミハラケ オビデウ,Ovidiu MIHALACHE,島田 幸洋,Yukihiro SHIMADA,田川 明広,Akihiro TAGAWA,山下 卓哉,Takuya YAMASHITA
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Eddy Current Testing Fast Breeder Reactor Heat Exchanger Laser Processing
西村 昭彦,Akihiko NISHIMURA,岡 潔,Kiyoshi OKA,山口 智彦,Toshihiko YAMAGUCHI,赤津 朋宏,Tomohiro AKATSU,関 健史,Takeshi SEKI,ミハラケ オビデウ,Ovidiu MIHALACHE,島田 幸洋,Yukihiro SHIMADA,田川 明広,Akihiro TAGAWA,山下 卓哉,Takuya YAMASHITA
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Eddy Current Testing Fast Breeder Reactor Heat Exchanger Laser Processing
In order to maintain FBR heat exchanger tubes, a new probe system was designed. A coupling u nit and operational software are key components in the second year. The coupling unit to com bine a high energy laser beam and optical fiberscope images was developed. The operational s oftware successfully controlled an eddy current testing device and a laser processing head....
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Development of Inspection and Repairing Technology for FBR Heat Exchanger tubes (II)Preparation of Operation Software and Performance Check
英字タイトル:
Development of Inspection and Repairing Technology for FBR Heat Exchanger tubes (II)Preparation of Operation Software and Performance Check
第7回
基調講演: 高速炉の実用化に向けた保守・補修技術開発
著者:
山下 卓哉,Takuya YAMASHITA
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Fast Breeder Reactor In-service Inspection Joyo Maintenance Monju
山下 卓哉,Takuya YAMASHITA
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Fast Breeder Reactor In-service Inspection Joyo Maintenance Monju
Since the FBR plants in commercial stage is designed 60 years reactor life which is twice of the prototype FBR “Monju“, ma intenance technologies considering aging and damage for a long term using at high temperature are needed. Development of t he in-service inspection and the repair technologies needed for maintenance of the commercial used FBR is discussed after reviewing the features of the FBR plants, and experience of ISI and repair of the experimental FBR “Joyo“ and the “Monju“....
英字タイトル:
Development of the In-service Inspection and Repair Technologies toward theCommercialization of Fast Breeder Reactor
英字タイトル:
Development of the In-service Inspection and Repair Technologies toward theCommercialization of Fast Breeder Reactor
第6回
基調講演:「もんじゅ」の現状と保全活動の取組み
著者:
一宮 正和,Masakazu ICHIMIYA,山下 卓哉,Takuya YAMASHITA
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Fast Breeder Reactor Maintenance Monju
一宮 正和,Masakazu ICHIMIYA,山下 卓哉,Takuya YAMASHITA
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Fast Breeder Reactor Maintenance Monju
Prototype fast breeder reactor “Monju“ attained the first critical on April 5th in 1994. The sodium leak accident in a secondary main co oling system was occurred during power rise examination on December 8th in 1995, and the “Monju“ has stopped after that. Various efforts such as reconstruction of the secondary cooling system and following verifications on integrity of components and facilities are contin ued towards the early restart up of the “Monju“ at present. The current status and efforts on mainten...
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Current Status of Monju and Effort on Maintenance 柳澤 務 Tsutomu YANAGISAWA
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Current Status of Monju and Effort on Maintenance 柳澤 務 Tsutomu YANAGISAWA
第10回
帰還困難区域における路面除染の予測と実証
著者:
田川 明広,Akihiro TAGAWA,山下 卓哉,Takuya YAMASHITA
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シミュレーション 密粒アスファルト 帰還困難区域 超高圧水 透水性アスファルト 除染
田川 明広,Akihiro TAGAWA,山下 卓哉,Takuya YAMASHITA
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シミュレーション 密粒アスファルト 帰還困難区域 超高圧水 透水性アスファルト 除染
This paper compared evaluation results of decontamination simulation with the actual decontamination result. One of the major factors that decontamination does not proceed, is that the decontamination results are unpredictable. JAEA has developed the software that can be predictive simulation of decontamination with a simple user interface. The purpose of this study is that to evaluate the simulation accuracy. JAEA evaluated accuracies that compared simulation results of decontamination simulation with...
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Decontamination estimate and demonstration test results on road in the return difficult area.
英字タイトル:
Decontamination estimate and demonstration test results on road in the return difficult area.
論文
複合型光ファイバを用いた 1 インチ伝熱配管用 観察補修レーザー加工ヘッドの開発
著者:
岡 潔,Kiyoshi OKA,西村 昭彦,Akihiko NISHIMURA,関 健史,Takeshi SEKI,赤津 朋宏,Tomohiro AKATSU,山下 卓哉,Takuya YAMASHITA
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Composite-type optical fiberscope Laser processing Processing device
岡 潔,Kiyoshi OKA,西村 昭彦,Akihiko NISHIMURA,関 健史,Takeshi SEKI,赤津 朋宏,Tomohiro AKATSU,山下 卓哉,Takuya YAMASHITA
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Composite-type optical fiberscope Laser processing Processing device
A composite-type optical fiberscope was combined with a laser processing head to repair heat exchange pipes of Fast Breeder Reactor (FBR). The head can rotate axially and move back and forth longitudinally in the 1-inch pipes. The property of fiberscope and the motion of the head can successfully observe the pipe’s inner surface to find the cracks which should be repaired by laser welding. The project, which aims for developing the integrated system of inspection and repair, proposes an effective cost...
英字タイトル:
Development of a Laser Processing Head Using a Composite-type Optical Fiberscope to Inspect and Repair 1-inch Heat Exchanger Pipes
英字タイトル:
Development of a Laser Processing Head Using a Composite-type Optical Fiberscope to Inspect and Repair 1-inch Heat Exchanger Pipes
第9回
高速炉の蒸気発生器伝熱管用 マルチコイル型 RF-ECT センサの開発
著者:
山口 智彦,Toshihiko YAMAGUCHI,ミハラケ ビック,Ovidiu MIHALACHE,上田 雅司,Masashi UEDA,山下 卓哉,Takuya YAMASHITA
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Double Wall Tube Fatigue Crack High Sensitivity JSFR Remote Field-ECT Steam Generator
山口 智彦,Toshihiko YAMAGUCHI,ミハラケ ビック,Ovidiu MIHALACHE,上田 雅司,Masashi UEDA,山下 卓哉,Takuya YAMASHITA
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Double Wall Tube Fatigue Crack High Sensitivity JSFR Remote Field-ECT Steam Generator
A new design was adopted for SG of JSFR (Japan Sodium-cooled Fast Reactor) using double-wall tubes. The present paper estimates and assess the defects detection in double-wall SG tubes for JSFR using Multiple RF-ECT sensor. We confirmed that proposed Multiple RF-ECT sensor has a high sensitivity to detect small defects....
英字タイトル:
Development of Multi-coil RF-ECT Sensor for JSFR SG tubes
英字タイトル:
Development of Multi-coil RF-ECT Sensor for JSFR SG tubes