压水堆核电站生产放射性同位素堆芯设计研究

摘要

对压水堆核电站生产放射性同位素进行了堆芯设计研究.采用钴棒替换阻流塞棒方案,对传统的压水堆阻流塞组件进行改进,在改进后的阻流塞组件压紧部件下对称悬挂24根钴棒,在确保反应堆安全的前提下生产放射性同位素.本文对钴芯块、钴棒节和钴靶件组件的设计进行了详细介绍,分析了钴靶件组件的特性及其对堆芯装载方案设计的影响.结果表明:用压水堆生产钴的放射性同位素在堆芯设计上可行,堆芯各项安全参数满足限值要求,生产的放射源可为核电站带来良好的经济收益.%Core design for radioisotope production in pressurized water reactor (PWR) nuclear power plant was carried out .Cobalt rod replaces thimble plug rod .24 cobalt rods were symmetrically suspended under the new design thimble plug assembly to produce radioisotope under the premise of ensuring the safety of the reactor .In this paper ,the design of cobalt pellets ,cobalt rods and cobalt target assembly was described in detail .The characteristics of cobalt target assembly and its influence on the core load-ing pattern design were analyzed .The results show that the cobalt radioisotope produc-tion by PWR is feasible in core design .The core safety parameters meet the requirment of limit values ,and the production of radioactive sources can bring good economic bene-fits to the nuclear power plant .