耐事故燃料研发进展及技术发展趋势

Research Progress and Technological Development Trend of Accident Tolerant Fuel

耐事故燃料(ATF)研发已成为后福岛时代国际燃料界一个新的研究方向,其内容涉及先进包壳材料、新型燃料的研发。经过十余年的全面系统研究,以美国、法国为代表的国际核燃料界在近期解决技术方案上取得了重要进展,对中远期的技术方向也更加聚焦。本文主要综述了国内外在ATF包壳材料(包括Cr涂层、FeCrAl合金与SiC复合材料)、燃料方面[包括增强型UO2、高铀密度燃料和陶瓷基包覆颗粒弥散(CDM)燃料]研究取得的重要进展、面临的挑战及后续技术发展趋势。

The research and development of accident tolerant fuel(ATF)has become a new research direction in the international fuel industry in the post-Fukushima era,which involves the research and development of advanced cladding materials and new nuclear fuels.After more than ten years of comprehensive and systematic research,the international nuclear fuel industry represented by the U.S.and France have gained important progress,focusing further on medium and long-term technical solutions.In this paper,the important progress,challenges and development trend of subsequent technologies in ATF cladding materials(including Cr coating,FeCrAl alloy and SiC composite)and fuels(including enhanced UO2,high uranium density fuel and ceramic dispersive matrix dispersion(CDM)fuel)at home and abroad are reviewed.