长寿期供热堆外围组件方案研究

Research on the Periphery Loose Assembly in Long-cycle Nuclear Heating Reactor

摘要: 长寿期供热堆LNHR(long cyclenuclearheatingreactor)是在200MW核供热堆NHR 200基础上发展起来的,是以长寿期、高燃耗、低废物量、低温低压为特征的核反应堆。LNHR的最大特点是循环寿期长达13.9a,整炉换料。本工作研究不同外围组件方案对LNHR堆芯平均燃耗的影响,提出了外围稀疏组件的设计方案,达到了最佳的燃料经济性。

Abstract: The long-cycle nuclear heating reactor(LNHR) is a small innovative reactor based on the NHR-200. The LNHR has a ultra-long cycle of 13.9 a and the high average burn-up level with 49.2 MW·d/kg. The single batch reload design was used and the different periphery assemblies were researched to attain big average burn-up for the LNHR. Based on the physical calculation the periphery loose assembly had highest-usage of fuel.