- 著者
- 酒谷 圭一 中谷 隆良 船橋 英之
- 出版者
- 一般社団法人 日本原子力学会
- 雑誌
- 日本原子力学会和文論文誌 (ISSN:13472879)
- 巻号頁・発行日
- vol.18, no.1, pp.43, 2019-03-01 (Released:2019-01-30)
理由:日本原子力学会和文論文誌 Vol.14, No.4, p.261-267 (2015)掲載論文に用いた腐食速度の算出にかかる水素発生データについては,データ取得の信頼性について問題があることが判明したため本誌より撤回する。一般社団法人 日本原子力学会編集委員会論文誌編集長 矢野豊彦
- 著者
- 酒谷 圭一 中谷 隆良 船橋 英之
- 出版者
- 一般社団法人 日本原子力学会
- 雑誌
- 日本原子力学会和文論文誌 (ISSN:13472879)
- 巻号頁・発行日
- vol.14, no.4, pp.261-267, 2015 (Released:2015-11-15)
- 参考文献数
- 14
Corrosion rate data for activated metal wastes are necessary for the prediction of the radiological impact of radioactive waste disposal. However, there are no such data available in the consideration of Zr-2.5 wt%Nb alloy, which is used in pressure tubes of the Fugen Nuclear Power Plant. Since the pressure tubes are destined for sub-surface disposal, it is necessary to obtain the corrosion rate of Zr-2.5 wt%Nb alloy under the disposal conditions. In this study, corrosion tests were conducted in high alkalinity and deoxidized water at 30℃ by a gas-accumulating-type corrosion test. The corrosion rate decreased to 3.3-3.9 nm/y and the corrosion thickness increased in proportion to the cubic root of corrosion time until 24 months after the commencement of the test. The results indicate that the corrosion rate would decrease in proportion to the minus cubic root of corrosion time squared if the empirical corrosion characteristic that had been obtained in material research for light-water reactors is applicable.