第2回
3WR炉内構造物のニッケル基合金溶接部に発見された応力腐食割れの超音波探傷試験結果とその評価
著者:
青木 孝行,Takayuki AOKI,小林 広幸,Hiroyuki KOBAYSHI,樋口 真一,Shinichi HIGUCHI,清水 禎人,Sadato SHIMIZU
発刊日:
公開日:
キーワードタグ:
A Ni-base alloy weld, including cracks due to stress corrosion cracking found in the reactor internal of the oldest BWR in Japan, Tsuruga unit 1, in 1999, was examined by three (3) types of UT method. After this examination, a depth of each crack was confirmed by carrying out a little excavation with a grinder and PT examination by turns until each crack Hisappeared. Then, the depth measured by the former method was comp ared with the one measured by the latter method. n this fashion, performances of the ...
英字タイトル:
Evaluation on Ultrasonic Examination Methods applied to Ni-base Alloy Weld including Cracks dueto Stress Corrosion Cracking found in BWR Reactor Internal
第6回
東海再処理施設における火災報知設備の非火災報の低減化対策
著者:
石井 貴広,Takahiro ISHII,清水 和幸,Kazuyuki SHIMIZU,酒井 克己,Katsumi SAKAI,伊波 慎一,Shinichi INAMI
発刊日:
公開日:
キーワードタグ:
The automatic fire alarm system installed in the Tokai Reprocessing Plant consists of more than 5,000 detectors in about 40 facilities for the moment. In this system, 51 non-fire cases have occurred for about 8 years from January 2 001 to May 2009. and about half of these cases was due to the condensation of water vapor generated on the sensor. Therefore, the prevention of condensation is necessary to reduce such false alarms, and the measure for prevention o f condensation has been taken by installing a m...
英字タイトル:
Prevention of False Alarms from Automatic Fire Alarm System in the Tokai Reprocessing Plant
第1回
遠隔運転保守支援技術の開発及び実機適用
著者:
山本 博樹,Hiroki YAMAMOTO,日隈 幸治,Koji HIGUMA,清水 俊一,Shinichi SHIMIZU,佐久間 正剛,Masatake SAKUMSA,園田 幸夫,Yukio SONODA,兼本 茂,Shigeru KANEMOTO
発刊日:
公開日:
キーワードタグ:
Abstract In operating of nuclear power plants, it is required not only to preserve and improve the reliability and safety, but also to introduce more efficient and lower cost maintenance strategy simultaneously, due to t he power trading deregulation in recent years. In addition, as the number of experienced operators / maintenance personnel decreases, comprehensive implementation of objective and transparent information provision syste m on plant operation and maintenance (O&M) being compliant with the la...
英字タイトル:
Development of Remote Operation & Maintenance Support service system
論文
BWR炉内構造物のニッケル基合金溶接部に発見された応力腐食割れの超音波探傷試験結果とその評価
著者:
青木 孝行,Takayuki AOKI,樋口 真一,Shinichi HIGUCHI,小林 広幸,Hiroyuki KOBAYASHI,清水 禎人,Sadato SHIMIZU
発刊日:
公開日:
キーワードタグ:
A Ni-base alloy weld, including cracks due to stress corrosion cracking found in the reactor internal of the oldest BWR in Japan, Tsuruga unit 1, in 1999, was examined by three (3) types of UT method. After this examination, a depth of each crack was confirmed by carrying out a little excavation with a grinder and PT examination by turns until each crack disappeared. Then, the depth measured by the former method was compared with the one measured by the latter method. In this fashion, performances of...
英字タイトル:
Evaluation on Ultrasonic Examination Methods applied to Ni-base Alloy Weld including Cracks due to Stress Corrosion Cracking found in BWR Reactor Internal