111件が見つかりました。

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第11回
ふげん SCC 対策技術とその有効性確認調査について
著者:
湯浅 豊隆,Toyotaka YUASA,阿部 輝宜,Teruyoshi ABE,中村 孝久,Takahisa NAKAMURA,明珍 宗孝,Munetaka MYOCHIN,高城 久承,Hisatsugu TAKAGI
発刊日:
公開日:
キーワードタグ:
Suffered SCC (stress corrosion cracking) at the primary cooling system in 1980, the “Fugen” power station introduced the three preventive technologies immediately. After the upgrade of the plant, no SCC occurred during the operation period. We have inspected the actual structural materials of the “Fugen” power statio n on its decommissioning stage to evaluate effectiveness of SCC management technologies, which are combin ing material replacement, induction heating stress improvement (IHSI) to reduce the w...
英字タイトル:
Evaluation of effectiveness of SCC prevention technologies after long term operation at the “Fugen” Power Station
第11回
インペラ摩耗模擬試験による多点分析手法の検討
著者:
角皆 学,Manabu TSUNOKAI,萱田 良,Ryo KAYATA,高瀬 健太郎,Kentaro TAKASE
発刊日:
公開日:
キーワードタグ:
The experiments that imitate wear in pump impellers were performed, in which various physical values such as outlet pressure, suction pressure, flow rate and motor current were acquired simul taneously. Three impellers with various wear amount and a normal one were tested. Similarity Based Modeling (SBM) was applied to the data for detection of the abnormality. SBM is a non-parame tric modeling method that makes a model of a certain state by sampling vectors that consists of various physical values at the ...
英字タイトル:
Investigation of multivariate analysis for detection of wear in pump impellers
第11回
ガラス溶融炉高度化研究
著者:
駒嶺 哲,Satoshi KOMAMINE,杉山 裕志,Hiroshi SUGIYAMA,兼平 憲男,Norio KANEHIRA,越智 英治,Eiji OCHI
発刊日:
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キーワードタグ:
JNFL have developed the vitrification technology of a high level liquid waste with a modification in discharge performance of the noble metal by changing the bottom structure and adding heating means. Cold test was conducted by using a full scale mock-up melter which introduced the new vitrification technology. In the cold test, we confirmed the discharge performance of the noble metal. ...
英字タイトル:
A study of advanced vitrification technology
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
発刊日:
公開日:
キーワードタグ:
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
第11回
ケーブル状態監視技術の調査研究
著者:
平尾 秀男,Hideo HIRAO,坂井 毅,Takeshi SAKAI,梶村 雄作,Yuusaku KAJIMURA
発刊日:
公開日:
キーワードタグ:
Low voltage electrical cables installed in nuclear power plants are required to function even in a design based accident environment. Nee ds for the condition monitoring technique for low voltage electrical cables has become greater as nuclear power plants operate longer. On e perfect method for this purpose is not available yet, but the possibility to use two different methods which are mutually complementary has been examined. The combination of Fourier transform infrared spectroscopy (FT-IR) and Indente...
英字タイトル:
Study on condition monitoring techniques for low voltage electrical cables
第11回
スウェジロック継手応急補修治具の開発
著者:
中間 昌平,Shohei NAKAMA,小林 広幸,Hiroyuki KOBAYASHI,須田 康晴,Yasuharu SUDA,加福 秀考,Hidetaka KAHUKU,赤松 哲郎,Tetsuro AKAMATSU,岩田 知和,Tomokazu IWATA,松尾 隆司,Ryuji MATSUO
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Many Swagelok connections are used in the instrumental tube pipe of Nuclear power plant because Swagelok conne ion is easy to put on and take off quickly. Although Swagelok connection is easy handling, it occurs very sma ll amount of leakage in some case. For the purpose of development of quick repair method for small amount leak e of Swagelok connection, we considered the base technique about the miniature cramp for Swagelok connection....
英字タイトル:
Development of Miniature Cramp for Swagelok Connection Temporary Repair
第11回
バッフルフォーマボルトの保全技術向上に向けた取り組み
著者:
小村 聡,Akira KOMURA,松原 亨,Toru MATSUBARA,中野 守人,Morihito NAKANO,関 弘明,Hiroaki SEKI
発刊日:
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キーワードタグ:
Baffle Former Bolts (BFBs) in PWR nuclear plant have the possibility to be cracked due to Irradiation Assisted Stress Corrosion Cracking (IASCC). The maintenance guideline for BFBs had been established from Thermal and Nuclear Power Engineering Society in 2000, and BFBs have been maintained in accor dance with this maintenance rules. Recently, the new edition of this guideline has been published in order to reflect latest IASCC data and more preci se stress evaluation of BFB into maintenance rules. The su...
英字タイトル:
Improvement activities for the maintenance of Baffle Former Bolts
第11回
フィルタベント設備の島根原子力発電所2号機への適用について
著者:
須澤 克則 ,Katsunori SUZAWA, 柏倉 潤,Toshimitsu USUI,臼井 利光,Keita NAITOU,内藤 慶太,Jun KASHIWAKURA,串間 友紀子,Yukiko KUSHIMA
発刊日:
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キーワードタグ:
Urgent safety measures which secure power supply and cooling function and prevent flood are being implemented promptly in Shimane nuclear power station to prevent damage of nuclear r eactors and the spent fuel based on Fukushima Daiichi nuclear power plant accident from tsunami caused by the 2011 off the Pacific coast of Tohoku Earthquake on March 11, 2011.In or der to improve the safety of the power station furthermore, various safety measures such as enhancement of basic design facilities to prevent seve...
英字タイトル:
Application of Filtered Containment Venting System to the Shimane No.2 NPP
第11回
フィルタベント設備の浜岡原子力発電所４号機への適用について
著者:
井上 博隆,Hirotaka INOUE,細見 憲治,Kenji HOSOMI
発刊日:
公開日:
キーワードタグ:
Urgent safety countermeasures immediately have been performed for Hamaoka NPP based on the accident of Fukushima Daiichi NPP caused by the Pacific coast of Tohoku Earthquake (March 11, 2011). And those countermeasures which increase the safety against tsunami attack was released in July of the same year. Moreover, the countermeasures against severe accident including installation of Filtered containment venting system are released in December, 2012, and the safety is further increased. Filtered venting...
英字タイトル:
The application of Filtered Containment Venting System to Hamaoka NPP Unit 4
第11回
レーザー塗膜除去技術の原子力プラントへの適用可能性 に関する検討
著者:
稲垣 博光,Hiromitsu INAGAKI,藤田 和久,Kazuhisa FUJITA,沖原 伸一朗,Shin-ichiro OKIHARA,豊澤 一晃,Kazuaki TOYOSAWA,前橋 伸光,Nobumitsu MAEBASHI,高原 和弘,Kazuhiro TAKAHARA,鈴木 猛,Takei SUZUKI,黒柳 昭博,Akihiro KUROYANAGI,秋吉 徹明,Tetsuaki AKIYOSHI
発刊日:
公開日:
キーワードタグ:
The portable laser device of coating removal developed for th e purpose of on-site removal of paint of the bridge in struct ural engineering field may be applicable as decontamination t echniques of nuclear power plant decommissioning because of h igh processing speed and little amount of secondary waste. Th en, in order to check the applicability of the portable laser device to the decontamination technique, fundamental examina on of removal of the stainless steel surface was performed....
英字タイトル:
Study on Applicability of Laser Coating Removal Technique to Nuclear Power Plant
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