Takeshi SEKI
著者に関連した記事は5件です。
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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9回
水素注入による環境改善効果の評価方法ガイドライン
著者:
寺門 剛,Takeshi TERAKADO,伊東 敬,Takashi ITO,小野 昇一,Shoichi ONO,高木 純一,Junichi TAKAGI,関 弘明,Hiroaki SEKI,和田 陽一,Yoichi WADA
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BWR ECP HWC JANTI Guideline SCC
寺門 剛,Takeshi TERAKADO,伊東 敬,Takashi ITO,小野 昇一,Shoichi ONO,高木 純一,Junichi TAKAGI,関 弘明,Hiroaki SEKI,和田 陽一,Yoichi WADA
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BWR ECP HWC JANTI Guideline SCC
Water environment improvement (ex. Hydrogen Water Chemistry (HWC)) is carried out for Stress Corrosion Cracking (SCC) mitigation in some of BWR plants. Japan Nuclear Technology Institute (JANTI) has the guideline on the inspection programs based on effectiveness of environmental SCC mitigation technique for BWR core internals. The guideline provides the crack growth rate (CGR) under HWC. Although CGR is defined by ECP (electroch emical corrosion potential), a dealing of evaluation of ECP and the HWC avail...
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The Guideline of evaluating the effectiveness of environmental improvementby Hydrogen Water Chemistry
英字タイトル:
The Guideline of evaluating the effectiveness of environmental improvementby Hydrogen Water Chemistry
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12回
高温用薄膜UTセンサを用いた配管減肉のモニタリング
著者:
鶴田 孝義,Takayoshi TSURUTA,小平 武志,Takeshi KODAIRA,山本 裕子,Yuko YAMAMOTO,関 伊佐夫,Isao SEKI,松浦 貴之,Takayuki MATSUURA
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high-temperature durability monitoring pipe wall thinning thin film UT sensor
鶴田 孝義,Takayoshi TSURUTA,小平 武志,Takeshi KODAIRA,山本 裕子,Yuko YAMAMOTO,関 伊佐夫,Isao SEKI,松浦 貴之,Takayuki MATSUURA
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high-temperature durability monitoring pipe wall thinning thin film UT sensor
As for periodical measurement of pipe wall thinning, several concerns are indicated, such as unstability of measurement position and contact condition, additional work for removal of insulating material and preparing scaffold, unstability on complex geometry and difficulty of continuous monitoring under plant operation. In order to solve these concerns, we developed thin-film UT sensor which has high-temperature durability and flexibility. Furthermore, we preliminary developed prototype linear phased-a...
英字タイトル:
Monitoring of pipe wall thinning using high-temperature thin-film UT sensor
英字タイトル:
Monitoring of pipe wall thinning using high-temperature thin-film UT sensor