更新情報
第5回
3.95 MeV X-band Linacを用いた高エネルギーX線非破壊検査装置の開発
著者:
山本 智彦,Tomohiko YAMAMOTO,夏井 拓也,Takuya NATSI,上坂 充,Mitsuru UESAKA,田辺 英二,Eiji TANABE,中村 直樹,Naoki NAKAMURA,山本 昌志,Masashi YAMAMOTO
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Condition Based Maintenance Magnetron X-band Linac X-ray
山本 智彦,Tomohiko YAMAMOTO,夏井 拓也,Takuya NATSI,上坂 充,Mitsuru UESAKA,田辺 英二,Eiji TANABE,中村 直樹,Naoki NAKAMURA,山本 昌志,Masashi YAMAMOTO
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Condition Based Maintenance Magnetron X-band Linac X-ray
We are developing portable non-destructive testing (NDT) X-ray source with X-band linac and low power magnetron. Now, we start the experiment of electron acceleration and X-ray generation using by 950 keV X-band linac NDT system. The 950 keV X-band linac X-ray generator is under development for corrosion wastage of tubes and condition bas ed maintenance of impeller pumps. However, about 1 MeV X-ray source can be only used for thin tubes of about 20 mm thickness. Therefore, we start to design about 4 MeV X-...
英字タイトル:
Development of High Energy X-ray NDT System with 3.95 MeV X-band Linac
英字タイトル:
Development of High Energy X-ray NDT System with 3.95 MeV X-band Linac
第11回
グローブボックスフィルターケーシングの腐食原因と補修技術
著者:
森 英人,Eito MORI,山本 昌彦,Masahiko YAMAMOTO,田口 茂郎,Shigeo TAGUCHI,佐藤 宗一,Soichi SATO,北尾 貴彦,Takahiko KITAO,駿河谷 直樹,Naoki SURUGAYA
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corrosion glove box radioactive material repair work stainless-steel
森 英人,Eito MORI,山本 昌彦,Masahiko YAMAMOTO,田口 茂郎,Shigeo TAGUCHI,佐藤 宗一,Soichi SATO,北尾 貴彦,Takahiko KITAO,駿河谷 直樹,Naoki SURUGAYA
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corrosion glove box radioactive material repair work stainless-steel
1.緒言 日本原子力研究開発機構の東海再処理施設では、長期 の使用により、グローブボックスや配管の一部にステン レス鋼の腐食が懸念される。万が一腐食が発生した場合、 放射性物質を閉じ込める機能を維持できなくなる可能性 があるため、腐食原因の究明は、施設の維持・管理を行 う上で重要事項である。また、腐食が生じたグローブボ ックスを負圧などの安全機能を維持した状態において補 修を行う技術の構築も必要である。本稿では、放射性物質を取扱うグローブボックスに接 続された排気用フィルターケーシングに生じたステンレ ス......
英字タイトル:
The cause of corrosion occurred in a glove box filter casing and its repair technique
英字タイトル:
The cause of corrosion occurred in a glove box filter casing and its repair technique
第13回
再処理施設におけるグローブボックスパネルの更新技術
著者:
舛井 健司,Kenji MASUI,山本 昌彦,Masahiko YAMAMOTO,久野 剛彦,Takehiko KUNO,駿河谷 直樹,Naoki SURUGAYA
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Glove Box Incombustible material Polycarbonate Transparent panel
舛井 健司,Kenji MASUI,山本 昌彦,Masahiko YAMAMOTO,久野 剛彦,Takehiko KUNO,駿河谷 直樹,Naoki SURUGAYA
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Glove Box Incombustible material Polycarbonate Transparent panel
In the new regulation formulated after the accident at Fukushima Daiichi Nuclear Power Plant, it is demanded that the glove box consists of incombustible or noncombustible materials. However, combustible acryl materials are used for many glove boxes installed in nuclear fuel cycle facilities. In this work, the glove box acryl panel has been replaced to incombustible material with accordance to the new regulation. The new panels have been manufactured by polycarbonate which satisfied the UL94 V-0 incombusti...
英字タイトル:
Replacement of the Glove Box Panel in Nuclear Fuel Reprocessing Facility
英字タイトル:
Replacement of the Glove Box Panel in Nuclear Fuel Reprocessing Facility
第13回
再処理施設におけるグローブボックスパネル用ガスケットの物性評価
著者:
後藤 雄一,Yuichi GOTO,山本 昌彦,Masahiko YAMAMOTO,久野 剛彦,Takehiko KUNO,駿河谷 直樹,Naoki SURUGAYA
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chloroprene gasket glove box reprocessing facility
後藤 雄一,Yuichi GOTO,山本 昌彦,Masahiko YAMAMOTO,久野 剛彦,Takehiko KUNO,駿河谷 直樹,Naoki SURUGAYA
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chloroprene gasket glove box reprocessing facility
Chloroprene rubber gaskets are often used to seal the glove box body and its panels. Such gaskets are deformed with compressive pressure and its elastic restoring force keeps sealing property. Therefore, gaskets play an important role in glove box sealing. However, physical properties of those used in glove box have not reported so far. In this study, hardness, elongation, tensile strength and compression set are investigated and its sealing performances are evaluated. The gaskets samples are taken fro...
英字タイトル:
Physical property of seal-gasket for glove box panel in reprocessing facilities
英字タイトル:
Physical property of seal-gasket for glove box panel in reprocessing facilities
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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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17回
島根原子力発電所1号機 廃止措置の状況
著者:
山本 直樹,野崎 誠,宮前 和寿,池田 信二,池田 和彦,作野 達雄,(中国電力)
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BWR decommissioning Dismantling Nuclear Shimane
山本 直樹,野崎 誠,宮前 和寿,池田 信二,池田 和彦,作野 達雄,(中国電力)
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BWR decommissioning Dismantling Nuclear Shimane
The Chugoku Electric Power Co., Inc. decided to decommission Unit 1(460 MW) at Shimane Nuclear Power Station on March 18, 2015 and the plant ended commercial operation on April 30 of the same year. After drawing up a concrete decommissioning plan, we submitted it for approval to the Nuclear Regulatory Authority on July 4, 2016. The plan was approved on April 19, 2017, and we are now at the stage of decommissioning the plant. This report outlines the decommissioning plan and the status of decommissioning wor...
英字タイトル:
Shimane Nuclear Power Station Unit1 How to proceed with decommissioning
英字タイトル:
Shimane Nuclear Power Station Unit1 How to proceed with decommissioning
第10回
高温用薄膜UTセンサを用いた 高精度な厚さ測定・減肉傾向監視技術の開発 Development of thickness measurement and thickness trend monitoring
著者:
藤田 直樹,Naoki FUJITA,関 伊佐夫,Isao SEKI,松浦 貴之,Takayuki MATSUURA,山本 裕子,Yuko YAMAMOTO,黒川 政秋,Masaaki KUROKAWA
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FAC flexible piezoceramics thickness measurement thickness monitoring thin film UT sensor
藤田 直樹,Naoki FUJITA,関 伊佐夫,Isao SEKI,松浦 貴之,Takayuki MATSUURA,山本 裕子,Yuko YAMAMOTO,黒川 政秋,Masaaki KUROKAWA
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FAC flexible piezoceramics thickness measurement thickness monitoring thin film UT sensor
In order to solve the problems of the thickness measurement, we have developed a thin-film UT sensor having excellent high-temperature durability and conformability in thin film form. In this paper, it was confirmed that the accuracy of thickness measurement for both complex geometries and plates at high-temperature was equivalent to the accuracy of conventional thickness measurement methods. It was also confirmed that the durability at high temperature and for temperature change in the actual equipmen...
英字タイトル:
technology using high-temperature thin-film UT sensor
英字タイトル:
technology using high-temperature thin-film UT sensor