Takeshi YAMAMOTO
著者に関連した記事は8件です。
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第7回
950keVライナックX線源によるその場検査用X線測定システム
著者:
山本 智彦,Tomohiko YAMAMOTO,藤原 健,Takeshi FUJIWARA,上坂 充,Mitsuru UESAKA,平井 俊輔,Shunsuke HIRAI
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CBM Linac Nondestructive X-Band X-ray
山本 智彦,Tomohiko YAMAMOTO,藤原 健,Takeshi FUJIWARA,上坂 充,Mitsuru UESAKA,平井 俊輔,Shunsuke HIRAI
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CBM Linac Nondestructive X-Band X-ray
We have been developed 9.4 GHz X-Band linac and 250kW magnetron for X-ray nondestructive tes ting system for Condition Based Maintenance (CBM). Our linac's energy is 950 keV, which fits to Japanese regulation to take them to outside of radiation controlled area. This small port able linac enables to diagnosis the moving facility, such as bearing in Nuclear Power Plants....
英字タイトル:
Development of 960keV X-Band Linac for Portable Nondestructive Testing System
英字タイトル:
Development of 960keV X-Band Linac for Portable Nondestructive Testing System
解説記事
JSME維持規格及び原技協炉内構造物点検評価ガイドラインの適用例と課題
著者:
堂﨑 浩二,Koji DOZAKI,山本 祥司,Shoji YAMAMOTO,山本 幸司,Koji YAMAMOTO,片岡 武司,Takeshi KATAOKA
発刊日:
公開日:
堂﨑 浩二,Koji DOZAKI,山本 祥司,Shoji YAMAMOTO,山本 幸司,Koji YAMAMOTO,片岡 武司,Takeshi KATAOKA
発刊日:
公開日:
１．まえがき東海第二発電所（1978年11月営業運転開始）は、第21回定期事業者検査中の2005年（平成17年）5月、図１に示すシュラウドサポートシリンダ軸方向溶接継手（以下「V8」という）3箇所に応力腐食割れ（SCC）と推定される割れが確認され、（社）日本機械学会（以下JSME）の維持規格、及び（社）日本原子力技術協会（以下原技協）の炉内構造物点検評価ガイドライン（以下ガイドライン）を適用した評価により一定期間内の構造健全性を示し、割れを補修することなく継続使用し、3年、7年、10年経過後の最初の定......
第9回
可搬型 950keVXバンドライナック X 線源による非破壊検査の実証研究
著者:
金 明,Ming JIN,藤原 健,Takeshi FUJIWARA,朱 海寿,Haitao ZHU,土橋 克広,Katsuhiro DOBASHI,出町 和之,Kazuyuki DEMACHI,上坂 充,Mitsuru UESAKA,草野 譲一,Joichi KUSANO,山本 昌志,Masashi YAMAMOTO,中村 直樹,Naoki NAKAMURA,田辺 英二,Eiji TANABE,三浦 到,Itaru MIURA,服部 行也,Yukiya HATTORI
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linac NDT onsite inspection pipe wall thinning X-band
金 明,Ming JIN,藤原 健,Takeshi FUJIWARA,朱 海寿,Haitao ZHU,土橋 克広,Katsuhiro DOBASHI,出町 和之,Kazuyuki DEMACHI,上坂 充,Mitsuru UESAKA,草野 譲一,Joichi KUSANO,山本 昌志,Masashi YAMAMOTO,中村 直樹,Naoki NAKAMURA,田辺 英二,Eiji TANABE,三浦 到,Itaru MIURA,服部 行也,Yukiya HATTORI
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キーワードタグ:
linac NDT onsite inspection pipe wall thinning X-band
Our portable X-band (9.3GHz) 950KeV linac has been successfully upgraded. The problems of RF power oscillation , beam current oscillation and reduction and finally lack of X-ray intensity were solved by replacing the axia l coupling cavities with the side-coupled ones. Designed X-ray dose rate of 0.05 Sv/min@lm is going to be achi eved. Length of the accelerating tube is reduced to less than 25 cm. X-ray source part with the local radiation shielding is connected by the flexible waveguide with the box of t...
英字タイトル:
Study on Portable X-band 950keV linac X-ray Sourcefor On-site Nondestructive Inspection
英字タイトル:
Study on Portable X-band 950keV linac X-ray Sourcefor On-site Nondestructive Inspection
第9回
国内PWRプラントへの超音波ショットピーニング技術適用
著者:
山本 剛,Yamamoto TAKESHI,濱本 智元,Hamamoto TOMOCHIKA,沖村 浩司,Okimura KOJI
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steam generator nozzle stress corrosion cracks ultrasonic shot peening
山本 剛,Yamamoto TAKESHI,濱本 智元,Hamamoto TOMOCHIKA,沖村 浩司,Okimura KOJI
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steam generator nozzle stress corrosion cracks ultrasonic shot peening
An effective countermeasure against stress corrosion cracks in nozzle welds is to improve the surface residual stress. A new tec hnique of the ultrasonic shot peening (USP) for steam generator (SG) nozzles will be introduced as a method to improve the residu al stress on Alloy 600 Welds. This method changes the compressive stress by applying plastic strain to the surface via the impac t force of the shot material during the shot peening. We have successfully performed 14 USP operations in actual plants in ...
英字タイトル:
Application of Ultrasonic Shot Peening To Steam Generator Nozzles
英字タイトル:
Application of Ultrasonic Shot Peening To Steam Generator Nozzles
Cladding Operation using alloy 690 with high SCC resistance is an effective measure for protection against PWSCC of all oy 600. To apply the Cladding Operation for Reactor Vessel Outlet Nozzle, Temper Bead Technique for low alloy steel was established and some kinds of remote controlled tools were developed. The first Cladding Operation for Reactor Vessel Ou tlet Nozzle was applied to a Japanese PWR Plant in November 2004,and the Cladding Operation was successfully completed. ...
英字タイトル:
The Cladding of PWR Reactor Vessel Outlet Nozzle
英字タイトル:
The Cladding of PWR Reactor Vessel Outlet Nozzle
第7回
東海第二発電所シュラウドサポート溶接部のひび割れへの維持規格及び炉内構造物等点検評価ガイドラインの適用について
著者:
堂崎 浩二,Koji DOZAKI,山本 幸司,Koji YAMAMOTO,山本 祥司,Shoji YAMAMOTO,片岡 武司,Takeshi KATAOKA,伊東 敬,Takashi ITO
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Flaw Evaluation Shroud Support Stress Corrosion Cracking
堂崎 浩二,Koji DOZAKI,山本 幸司,Koji YAMAMOTO,山本 祥司,Shoji YAMAMOTO,片岡 武司,Takeshi KATAOKA,伊東 敬,Takashi ITO
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Flaw Evaluation Shroud Support Stress Corrosion Cracking
Cracks were found at shroud support of Tokai II Power Station in 24th outage. Flaw evaluation of these cracks was performed applying Co des for Nuclear Power Generation Facilities - Rules on Fitness-for-Service ? (FFS Code) of Japan Society of Mechanical Engineers (JSME) and Guideline for Inspection and Evaluation of Reactor Internals of Japan Nuclear Technology Institute (JANTI). Evaluation methods and r esults are outlined in this report. Issues to be studied for better improvement of JSME FFS Code and J...
英字タイトル:
Application of JSME Fitness-for-Service Code and JANTI Guideline for Inspection and Evaluation of ReactorInternals to Cracks found at Shroud Support of Tokai II Power Station
英字タイトル:
Application of JSME Fitness-for-Service Code and JANTI Guideline for Inspection and Evaluation of ReactorInternals to Cracks found at Shroud Support of Tokai II Power Station
第10回
海水管内面ライニング点検技術の高度化
著者:
南山 彰男,Akio MINAMIYAMA,山本 剛,Takeshi YAMAMOTO,杉本 憲昭,Noriaki SUGIMOTO,光畑 幸史,Yukifumi KOHATA,當房 亮平,Ryohei TOBO
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lining inspection technology pinhole detection function piping degradation s
南山 彰男,Akio MINAMIYAMA,山本 剛,Takeshi YAMAMOTO,杉本 憲昭,Noriaki SUGIMOTO,光畑 幸史,Yukifumi KOHATA,當房 亮平,Ryohei TOBO
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lining inspection technology pinhole detection function piping degradation s
In domestic plants, sea water is used for cooling the auxiliary coolers, the lining of sea water pipe inside as anticorrosion materials is used with rubbers, polyethylene, epoxy resins, and etc. And the lining conditions are mainly confirmed by direct visual inspection. In the sea water pip g, the once occurred the small through-holes(pin-hole) accelerate the piping degradation caused by corrosion and it is important to confirm the deterioration condition of lining at an early st age. However, to confirm ...
英字タイトル:
The Advancement of lining inspection technology inside sea water piping
英字タイトル:
The Advancement of lining inspection technology inside sea water piping
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