Cr涂层ATF组件核电厂经济性分析

Economic Analysis of Cr Coated ATF Nuclear Fuel in a Typical Nuclear Power Plant

以Cr涂层的耐事故燃料(ATF)组件为研究对象,基于现役核电厂18个月的换料需求,从堆芯燃料管理方案层面评价Cr涂层ATF组件对核电厂的经济性影响;同时,设计2种不同的燃料管理方案对采用Cr涂层ATF组件的堆芯进行经济性优化方向的探索,一种思路是基于"经济性补偿"方向,即将优化目标设定为补偿由于采用ATF组件导致的经济性下降;另一种思路是基于"经济性提高"方向,即将优化目标设定为提高采用ATF组件的整体经济性。分析结果表明,以"经济性补偿"为目标的优化方案不易实现,但在乏燃料贮存、转运、后处理等方面会带来经济性提升;而以"经济性提高"为目标的优化方案虽然可以大幅提高堆芯单循环经济性,但会影响参考核电厂18个月换料周期以及长远的发电计划。

This paper has conducted a comparative evaluation,mainly on the aspects of the fuel management strategy,for the Cr coated Accident Tolerant Fuel(ATF)fuel applying in a typical domestic nuclear power plant(NPP),considering its 18-months fuel re-loading schedule.It designs two different conservative core management schemes,exploring the economical optimizing direction of the NPP utilizing Cr coated ATF fuel.One scheme is based on an"economic compensation"consideration,with the optimization target of compensating the economic loss brought from the application of the ATF fuel;The other scheme is called"economic enhancement",to enhance the whole economic of the NPP with ATF fuel.The analysis result concluded that,it is relatively difficult to achieve the"economic compensation"goal,however it can bring economic enhancement in term of the spent fuel disposal,transportation and post-processing;While the"economic enhancement"scheme can greatly increase the economy in a single fuel cycle,but will bring a significant effect on the plant’s 18-months refuel cycle and future electricity generating plan.