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Performance degradation of candidate accident-tolerant cladding under corrosive environment

事故耐性被覆管候補材の腐食環境における性能劣化

永瀬 文久; 坂本 寛*; 山下 真一郎

Nagase, Fumihisa; Sakamoto, Kan*; Yamashita, Shinichiro

福島第一原子力発電所事故の教訓として、従来のジルコニウム合金に比べ事故耐性を高めた新型燃料被覆管の開発が進められている。本論文は、事故耐性燃料被覆管開発の進捗をレビューするとともに、軽水炉燃料を設計する上で考慮すべき様々な腐食環境における性能劣化に焦点を当て解決すべき課題をまとめた。

As the lessons learnt from the accident at the Fukushima Daiichi Nuclear Power Station, advanced cladding materials are being developed to enhance accident tolerance comparing with conventional zirconium alloys. The present paper reviews the progress of the development and summarizes subjects to be solved for the enhanced accident-tolerance fuel cladding, focusing on performance degradation under various corrosive environmental conditions that should be considered in designing the LWR fuel.

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