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論文
1/2 インチ配管内の検査補修用レーザー加工ヘッドの開発
著者:
小松 和三,Kazumi KOMATSU,関 健史,Takeshi SEKI,長縄 明大,Akihiro NAGANAWA,岡 潔,Kiyoshi OKA,西村 昭彦,Akihiko NISHIMURA
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Half-inch pipe Inspection Laser processing head Repair Ultrasonic motor
小松 和三,Kazumi KOMATSU,関 健史,Takeshi SEKI,長縄 明大,Akihiro NAGANAWA,岡 潔,Kiyoshi OKA,西村 昭彦,Akihiko NISHIMURA
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Half-inch pipe Inspection Laser processing head Repair Ultrasonic motor
In recent years, the inspection of pipes is being carried out by using inspection techniques which employ ultrasonic and eddy current testing, endoscope (CCD cameras or optical fiber). Currently, the inspection devices can be performed only a visual check of the pipes. In case of a damage, they cannot be repaired. In such case, the damaged portion has to be excluded or the pipe has to be replaced. The authors develop a laser processing head comprising an optical fiberscope. It is capable of inspection...
英字タイトル:
Development of a laser processing head for the inspection and repair of damages inside of a half-inch pipe
英字タイトル:
Development of a laser processing head for the inspection and repair of damages inside of a half-inch pipe
第12回
レーザーを用いた配管検査補修装置の開発
著者:
寺田 隆哉,Takaya TERADA,西村 昭彦,Akihiko NISHIMURA,岡 潔,Kiyoshi OKA,外山 亮治,Ryoji TOYAMA,橘内 大輔,Daisuke KITSUNAI
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heat exchanger tube laser cladding maintenance
寺田 隆哉,Takaya TERADA,西村 昭彦,Akihiko NISHIMURA,岡 潔,Kiyoshi OKA,外山 亮治,Ryoji TOYAMA,橘内 大輔,Daisuke KITSUNAI
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heat exchanger tube laser cladding maintenance
A prototype of maintenance machine for heat exchanger tubes was developed. It was based on the bench top size device which had been specially designed to have dual functions for fiber inspection and laser cladding in JAEA. A laser processing head was improved mechanically in 2 motions of axial translation and circumferential rotation to insert the heat exchanger tubes. ...
英字タイトル:
Development of Maintenance Machine for Heat Exchanger Tubes by Laser Technology
英字タイトル:
Development of Maintenance Machine for Heat Exchanger Tubes by Laser Technology
論文
レーザー加工トーチを用いた配管表面肉盛溶接技術の研究
著者:
寺田 隆哉,Takaya TERADA,西村 昭彦,Akihiko NISHIMURA,岡 潔,Kiyoshi OKA,森山 拓,Taku MORIYAMA,松田 宏康,Hiroyasu MATSUDA
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laser cladding laser processing tube maintenance
寺田 隆哉,Takaya TERADA,西村 昭彦,Akihiko NISHIMURA,岡 潔,Kiyoshi OKA,森山 拓,Taku MORIYAMA,松田 宏康,Hiroyasu MATSUDA
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laser cladding laser processing tube maintenance
New maintenance technique was proposed using a hand-held laser torch for aging chemical plants and power plants. The hand-held laser torch was specially designed to be able to access limited tubular space in various cases. A composite-type optical fiberscope was composed of a center fiber for beam delivery and surrounded fibers for visible image delivery. Laser irradiation on a work pieces with the best accuracy of filler wire was carried out. And, we found that the optimized wire-feed speed was 2 mm/...
英字タイトル:
A Study of Cladding Technology on Tube Wall Surface by a Hand-held Laser Torch
英字タイトル:
A Study of Cladding Technology on Tube Wall Surface by a Hand-held Laser Torch
第8回
レーザ溶接部の検査技術開発
著者:
西村 昭彦,Akihiko NISHIMURA,寺田 隆哉,Takaya TERADA,山田 知典,Tomonori YAMADA,竹仲 祐介,Yusuke TAKENAKA,古山 雄大,Takehiro FURUYAMA
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Butt Welding Eddy Current Testing Endoscope Laser Welding X-ray Absorption Contrast
西村 昭彦,Akihiko NISHIMURA,寺田 隆哉,Takaya TERADA,山田 知典,Tomonori YAMADA,竹仲 祐介,Yusuke TAKENAKA,古山 雄大,Takehiro FURUYAMA
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Butt Welding Eddy Current Testing Endoscope Laser Welding X-ray Absorption Contrast
We are developing the inspection technology for laser micro spot welding. Butt welding for the inner wall of heat exchanger tubes were successfully carried o ut by a composite-type optical fiber scope. The related technologies are the f ollowing : Rapid inspection by Eddy Current Testing Fiber endoscope observation 3 Synchrotron X-ray absorption contrast method. These technologies are versatile to be applied in maintenance for industrial production plants....
英字タイトル:
Development of Inspection Technology for Laser Welding Section
英字タイトル:
Development of Inspection Technology for Laser Welding Section
第13回
レーザ熱加工による保全ロボットの開発と展開
著者:
西村 昭彦,Akihiko NISHIMURA,竹仲 佑介,Yusuke TAKENAKA,岡 潔,Kiyoshi OKA,外山 亮治,Ryoji TOYAMA,寺田 隆哉,Takaya TERADA,峰原 英介,Eisuke MINEHARA
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fiber laser laser thermal processing nuclear power plant optical fiber robot
西村 昭彦,Akihiko NISHIMURA,竹仲 佑介,Yusuke TAKENAKA,岡 潔,Kiyoshi OKA,外山 亮治,Ryoji TOYAMA,寺田 隆哉,Takaya TERADA,峰原 英介,Eisuke MINEHARA
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fiber laser laser thermal processing nuclear power plant optical fiber robot
Laser thermal processing was applied to robotic systems. For the narrow limited space like a 1-inch diameter tube, a compact laser processing head successfully observed the heat exchanger tube inner wall and welded a crack gap. A compact air cooled fiber laser was able to heat an inner wall through a delivery optical fiber. A filler wire feeder for laser cladding was also tested. A compact maintenance robot for petrochemical industrial plants was demonstrated....
英字タイトル:
Development and Deployment of Maintenance Robot with Laser Thermal Processing
英字タイトル:
Development and Deployment of Maintenance Robot with Laser Thermal Processing
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....
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
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6回
伝熱管検査技術高度化のための磁性粉探傷用蛍光マイクロカプセルの作製
著者:
伊東 富由美,Fuyumi ITO,西村 昭彦,Akihiko NISHIMURA
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magnetic crack detection magnetic particle testing micro capsule
伊東 富由美,Fuyumi ITO,西村 昭彦,Akihiko NISHIMURA
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magnetic crack detection magnetic particle testing micro capsule
Fine magnetic particles having UV fluorescence are commonly used in magnetic crack detection technique. Stress corrosion cracking sometimes happens in nuclear power plants. To apply this technique to maintain the heat exchanger tubes, it is desired that these particles has performance to be collected with ease. To c ollect these fine magnetic particles from millimeter size crack depth, a chemosynthesis technique to produce the micro capsules successfully produced hundreds micron sized capsules containing t...
英字タイトル:
A fluorescent micro capsule manufacture of magnetic particle testingfor advanced inspection technique of heat exchanger tube
英字タイトル:
A fluorescent micro capsule manufacture of magnetic particle testingfor advanced inspection technique of heat exchanger tube
論文
光パルス干渉方式地震計を用いた円筒水槽振動特性の観測
著者:
森下 日出喜,Hideki Morishita,吉田 稔,Minoru Yoshida,西村 昭彦,Akihiko Nishimura,松平 昌之,Masayuki Matsudaira,平山 義治,Yoshiharu Hirayama,菅野 裕一,Yuichi Sugano
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Decommissioning Fukushima Daiichi Nuclear Power Station Harsh Environment High Dose Phase-shifted Optical Pulse Interference Sensor Seismic Safety Management Seismometer
森下 日出喜,Hideki Morishita,吉田 稔,Minoru Yoshida,西村 昭彦,Akihiko Nishimura,松平 昌之,Masayuki Matsudaira,平山 義治,Yoshiharu Hirayama,菅野 裕一,Yuichi Sugano
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Decommissioning Fukushima Daiichi Nuclear Power Station Harsh Environment High Dose Phase-shifted Optical Pulse Interference Sensor Seismic Safety Management Seismometer
本報は、POPI方式の高感度地震計の実用化を目的として、その実施試験として原子炉格納容器、石油貯蔵タンク、化学プラント反応容器などタンク形状の構造体の振動特性の報告である。試験場所として、日本原子力研究開発機構の楢葉遠隔技術開発センター(以下NARRECと略記)を活用し、タンク形状構造体としてNARRECに設置された水中ロボット操作用試験水槽を使用した。また、地震計設置にあたって1F設置のために開発してきた専用ロボットによる設置試験も行った。 ...
英字タイトル:
Observation of Vibration Characteristics of a Cylindrical Water Tank by a Phase-shifted Optical Pulse Interference Sensor
英字タイトル:
Observation of Vibration Characteristics of a Cylindrical Water Tank by a Phase-shifted Optical Pulse Interference Sensor
第8回
内壁減肉配管補修のためのレーザー溶接技術開発
著者:
寺田 隆哉,Takaya TERADA,西村 昭彦,Akihiko NISHIMURA,岡 潔,Kiyoshi OKA
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composite-type optical fiber scope heat exchanger pipe laser cladding pipe wall thinning
寺田 隆哉,Takaya TERADA,西村 昭彦,Akihiko NISHIMURA,岡 潔,Kiyoshi OKA
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composite-type optical fiber scope heat exchanger pipe laser cladding pipe wall thinning
We are developing the laser welding and cladding device for the maintenance of heat exchanger pipes. In the We are developing the laser welding and cladding device for the maintenance of heat exchan ger pipes. In the case of flow accelerated corrosion where pipe wall thinning occurred after a long time operation, laser cladding is mostly expected. A laser processing head was proposed in order t o access the pipe wall. A composite-type optical fiber scope was used for real time observation and laser process...
英字タイトル:
Development of Laser Cladding Technology for Maintenance ofPipe Wall Thinning
英字タイトル:
Development of Laser Cladding Technology for Maintenance ofPipe Wall Thinning