摘要
本文介绍了中子照相作为一种无损检测技术在核燃料元件检测方面的优势,并对某些重要应用和取得的成果进行了介绍。中子照相可对未辐照的核燃料元件进行无损检测,如确定芯块235U富集度、检测燃料内可燃毒物、检测MOX型燃料内PuO2团簇;也可对辐照后具有放射性的燃料元件进行无损检测,如对压水堆、沸水堆、快堆等多种堆型乏燃料元件的内部缺陷进行检测,研究燃料元件包壳氢聚等。
This paper describes the experimental procedures,testing information and application advantages when neutron radiography is used for non-destructive inspections and quantitative analysis of fuel elements from nuclear power plants.Both the 235U enrichment and the material distribution inside the pellets can be determined by neutron radiography methods for the non-irradiated fuel elements.Both the structural integrity of fuel elements for different reactors such as PWR,BWR,FBTR and the hydrogen accumulation in the cladding material can be inspected for the irradiated samples.
出处
《核技术》
CAS
CSCD
北大核心
2012年第11期821-826,共6页
Nuclear Techniques
基金
国家重点基础研究发展计划(973计划)(2010CB833106)资助
关键词
中子照相
核燃料元件
无损检测
Neutron radiography,Nuclear fuel element,Non-destructive testing
