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Suto, Masayoshi; Sugaya, Takashi; Sumino, Kozo
UTNL-R-0475, p.7_1 - 7_11, 2010/03
no abstracts in English
Kitagishi, Shigeru; Inoue, Shuichi; Saito, Takashi; Omi, Masao; Tsuchiya, Kunihiko
UTNL-R-0475, p.2_5_1 - 2_5_9, 2010/03
no abstracts in English
Inoue, Shuichi; Yamaura, Takayuki; Saito, Takashi; Kanno, Masaru
UTNL-R-0475, p.2_4_1 - 2_4_10, 2010/03
no abstracts in English
Shimazaki, Yosuke; Inoi, Hiroyuki; Owada, Hiroyuki; Ishii, Taro*; Nishihara, Tetsuo
no journal, ,
no abstracts in English
Ashida, Takashi; Okazaki, Yoshihiro; Miyamoto, Kazuyuki; Noguchi, Koichi; Ito, Hideaki
no journal, ,
The 15th periodic inspection of Joyo commenced in May 2007 with the Fuel Handling Machine (FHM) being set up on the Rotating Plug (R/P) for refueling in June. When the R/P was taken down, measuring the load of the Hold-Down Shaft (HDS) revealed an abnormal decrease above the in-vessel storage rack (IVS). As a result of the observations, it was discovered that the top of the irradiation test S/A "MARICO-2"had bent onto the IVS as an obstacle, and had damaged the Upper Core Structure (UCS). The other action items in the restoration work, which are design of UCS and MARICO-2 handling device will be investigated in detail designs. The experience obtained through the restoration work in Joyo will provided valuable insights into possible further improvements and verifications for in-vessel inspection and repair techniques in SFRs.
Yoshihara, Shizuya; Okawa, Toshikatsu; Inoue, Setsunari
no journal, ,
no abstracts in English
Akiyama, Yoshiya; Kawashima, Kazuhito; Muramatsu, Yasuyuki; Murao, Hiroyuki
no journal, ,
no abstracts in English
Yonekawa, Minoru; Kato, Yoshiaki; Nakagawa, Tetsuya
no journal, ,
no abstracts in English
Ide, Hiroshi; Kimura, Akihiro; Miura, Hiroshi; Hori, Naohiko
no journal, ,
As for the water analysis in the JMTR operation management, periodical sampling of the primary coolant water and analysis of radionuclide in it are being carried out for detecting slight change of the primary cooling system and the fuel during the JMTR operation. On the other hand, periodical sampling of the reactor pool water, the canal water and so on and analysis of pH and electrical conductivity in them are being carried out for maintaining the facilities during the JMTR shutdown period. As for the gas analysis, analysis of radionuclide in the He gas swept from the irradiation devices was being carried out for detecting the fuel failure condition. This report summarized the situation of the previous water/gas analysis and the preparations status for water/gas analysis after the re-operation.
Sasaki, Tsutomu; Yagi, Masahiro; Hirane, Nobuhiko; Oyama, Koji
no journal, ,
no abstracts in English
Oto, Tsutomu; Ebisawa, Hiroyuki; Onoue, Ryuji; Echigoya, Shinichi; Fukasaku, Akitomi
no journal, ,
no abstracts in English
Imaizumi, Tomomi; Nagao, Yoshiharu; Kaminaga, Masanori; Ishihara, Masahiro
no journal, ,
no abstracts in English