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廃スラッジ貯槽材料の耐食性評価

Corrosion resistance of tank material used for flock storage

安倍 弘 ; 佐野 雄一  ; 竹内 正行 ; 坂内 信行; 星 真之; 荻野 英樹; 青瀬 晋一

Ambai, Hiromu; Sano, Yuichi; Takeuchi, Masayuki; Sakauchi, Nobuyuki; Hoshi, Masayuki; Ogino, Hideki; Aose, Shinichi

福島第一原子力発電所事故の汚染水処理によって発生した廃スラッジを一時保管する貯槽材料(炭素鋼)の耐食性評価の一環として、静置系でスラッジとの接触や放射線等の因子を考慮した腐食試験等を実施した。その結果、いずれの条件においても腐食速度は0.1mm/y程度であり、局部腐食を含む顕著な腐食の進行は認められなかった。

As a part of studies on corrosion resistance of storage tanks for flock generated in the coagulation process for radioactive contaminated water from the Fukushima Daiichi Nuclear Power Plant, several corrosion tests considering the radiation and the contact with flock were carried out with SS400 in the settling condition. Average corrosion rates of SS400 were around 0.1mm/y and severe corrosion including local corrosion was not observed.

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