Primary Study on Core Concept Design and Safety Margin of CPR1000

CRP1000 is the China PWR design based on step-by-step improvement and innovation by China Guangdong Nuclear Power Company（CGNPC） over 20 years.The reference design of CPR10000 is Ling’ao II plus some improvements.CPR1000 will be the main PWR to be built in China by CGNPC within the next 10-15 years.The prerequisite is to define the fuel loading pattern and the fuel management mode for the CPR1000 initial core design,which is the base for CPR1000 nuclear island design,safety analysis and licensing.This paper summarizes the CPR1000 initial core concept design,fuel management design and the safety evaluation based on Daya Bay and Ling’ao operation and fuel management experiences and international technology development.This paper proposes the fuel type to be used for CPR1000 initial core design,analyze the 18-month fuel cycle fuel,the management strategy and design,and conduct the preliminary safety evaluation for CPR1000.