秦山三期CANDU重水堆燃料的设计与性能

Design and Performance of Fuel for QinshanPhase ⅢCANDU Reactor

分别从设计特点、堆内外试验验证和堆内运行经验等方面阐述ＣＡＮＤＵ 重水堆燃料具有高的性能的原因。为实现不停堆换料能力， ＣＡＮＤＵ６ 采用了独特的燃料设计， １９８５ ～１９９６ 的１０ 年内， 在５６５０００组３７ 根棒的卸料组件中， 其破损率已由从前的０ ．１ ％ 降至０ ．０４ ％ ， 相应的单根燃料棒破损率在２ ×１０ －５ 以下。

The design features,in core and out core qualification tests and operating experience for CANDU 6 reactors is introduced.To achieve non shutdown refueling,a unique fuel design is adopted.During the 10 years period from 1985 to 1996,the defect rate has dropped to 0.04%in 565000 bundles discharged of 37 element bundle,compared to the previous rate of 0.1%.This corresponds to an element defect rate of less than 2×10-5.