Optimization and Selection of Long Fuel Cycle Reloading Pattern for Qinshan Project Ⅱ

Reloading pattern is the basic and most important item during the process of the fuel management strategy modification.It has great effects on the safety and economic performance of the nuclear power plants.Unit 1 and 2 in Qinshan project Ⅱ will modify the fuel management strategy once more after the modification of AFA-2G&AFA-3G mixing core with raising the enrichment.This paper introduces the whole process to optimize and select the reloading pattern for Qinshan Project Ⅱ based on the requirements of long fuel cycle management strategy.