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余裕深度処分環境におけるふげん圧力管(Zr-2.5wt%Nb合金)の腐食速度の評価,4

Corrosion test of Zr-2.5wt%Nb alloy under the sub-surface disposal environment, 4

酒谷 圭一; 中谷 隆良 ; 船橋 英之 

Sakatani, Keiichi; Nakatani, Takayoshi; Funabashi, Hideyuki

原子力機構が保有する低レベル放射性廃棄物の余裕深度処分に関して、放射化金属廃棄物であるふげん圧力管からの核種溶出率の設定を目的に、ふげん圧力管の構成材であるZr-2.5wt%Nb合金の腐食速度の評価試験を実施し、評価期間2年までの腐食速度データを取得した。

We planned the corrosion test on Zr-2.5wt%Nb alloy which is used in the pressure tube of Fugen (ATR) in order to obtain long-term corrosion rate data under the low oxygen and alkaline conditions assuming the disposal environment. We conducted the test and obtained the corrosion rate data after 1, 3, 6, 12 and 24 months during the test period.

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