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- Material Type
- 規格・テクニカルリポート類
- Author/Editor
- 立川 博一川久保 文恵清水 亮彦柴田 俊夫安住 和久井上 博之杉本 克久水流 徹藤本 愼司
- Publication Date
- 2008-02
- Publication Date (W3CDTF)
- 2008
- Alternative Title
- Investigation of the long term corrosion resistance of the overpack FY2006 (Contract research)
- Periodical title
- JAEA-Research 2007-086
- Target Audience
- 一般
- Note (General)
- 出版タイプ: NAオーバーパックの腐食寿命については、これまで、日本の幅広い地質環境条件を想定した実験データや既往研究等に基づいて検討が行われてきた。しかしながら、高pH環境での挙動,ニアフィールド環境条件の時間的な変化に伴う挙動,溶接部の腐食挙動等、長期的な信頼性を向上させるとともに、オーバーパック設計を具体化するうえでの課題がある。このような状況を考慮して、(財)原子力安全研究協会内に国内の金属の腐食科学分野の専門家からなる「オーバーパックの長期安定性に関する調査専門委員会」を設置し、既往の研究成果と安全評価上の考え方について、金属の腐食科学の観点から長期耐食性に関する調査検討を行った。The corrosion life time of the overpack has been investigated on the basis of experimental data and past research, assuming the ranging geological environment of Japan. However, some subject for the realization of the overpack design, such as the behavior of the overpack under high pH conditions, the behavior of the overpack with change of near-field environmental condition and the corrosion behavior of the welds have still been left. To take into account these conditions, expert committee composed of metal corrosion science experts were established in the Nuclear Safety Research Association and past research outcomes and the theory of safety assessment for long term corrosion resistance were investigated from the view points of metal corrosion science.
- Source
- /JAEA-Research-2007-086.pdf (fulltext)