铅冷快堆因在固有安全性、良好的物理化学特性等方面的优势,得到了世界上很多国家的重视.提高堆芯的增殖比是铅冷快堆堆芯优化设计中的关键.本文利用快中子反应堆中子学计算分析软件SARAX程序,通过优化铅冷快堆的燃料组件、反射组件以及屏蔽组件设计,形成10种能够提高堆芯增殖比BR的方案,再经过进一步筛选,最终形成优化的堆芯装载方案,并分析了堆芯物理特性,初步证明了方案的可行性.本文的研究可为铅冷快堆的堆芯优化设计提供参考.
The lead cooled fast reactor attracts more and more attention in many countries,owing to the inherent safety features,the harder energy spectrum,and the excellent physical and chemical characteristics.How to raise the breeding ratio is the key to optimize the core design of the lead cooled fast reactor.This article optimizes the design of fuel assembly,reflection assembly,and shielding assembly,and provides 10 optimization schemes to raise the BR,by using SARAX.An optimal scheme is given after screening the 10 optimization schemes and preliminary proved to be feasible after the detailed analysis on physical features.This study provides a valuable reference for core optimization of the lead cooled fast reactor.