田湾核电站堆芯换料模式研究及应用

Study on Refueling Pattern and Its Application in Tianwan Nuclear Power Plant

以田湾核电站的1#、2#机组第3循环堆芯装载图为例,介绍全进全出、堆内倒换和边进边出3种换料方法的操作过程,计算这3种换料方法的时间效率,分析比较3种换料方法的优缺点和适用场景。经田湾核电站实际换料验证,堆内倒换和边进边出换料方法是可行的,能显著提高换料效率。

Refueling for the reactor core is a top priority for a nuclear power plant unit in the course of yearly refueling overhaul.Taking the fuel loading diagram for the 3rd cycle of No.1 and No.2 unit of Tianwan NPP as an example,this paper introduces the operation process for three refueling methods,i.e.,the all-in out,the shifting within core and chainre fueling.Time efficiency for these three refueling methods is estimated,and the advantages and applicable scenarios for these three refueling methods are analyzed and compared.The actual refueling operation for Tianwan NPP verified that the latter two refueling methods are feasible,and can greatly improve the efficiency of refueling.