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Analysis of dissolved radionuclides trapped into corrosion products formed on carbon steel and the corresponding increase in radioactivity

青山 高士   ; 上野 文義  ; 佐藤 智徳  ; 加藤 千明   ; 佐野 成人; 山下 直輝; 大谷 恭平   ; 五十嵐 誉廣  

Aoyama, Takahito; Ueno, Fumiyoshi; Sato, Tomonori; Kato, Chiaki; Sano, Naruto; Yamashita, Naoki; Otani, Kyohei; Igarashi, Takahiro

To elucidate the effect of dissolved radionuclides on corrosion of carbon steels and on formation of corrosion products of carbon steel, corrosion tests and imaging plate analysis were conducted. Carbon steel samples immersed in 10 mM NaCl containing $$^{90}$$Sr and $$^{137}$$Cs were analyzed using an imaging plate. As a result, the distribution of $$^{90}$$Sr or $$^{137}$$Cs in the corrosion products formed on carbon steel was successfully visualized. Furthermore, the radioactivity of the corroded specimens was calculated from calibration curves prepared using a $$^{90}$$Sr standard.

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