CMT and PBL study in the high-pressure phase on the advance core-cooling mechanism experiment with RELAP 5

The passive core cooling system is an important improvement for the emergency core cooling system of pressurized water reactor. However, although there're studies focus on each component, the study on the integral effect still not sufficient. Especially the study on the core makeup tanks (CMTs). Our simulation study is based on the SBLOCA experiment on Advanced Plant Experiment (APEX) and Advance Core-cooling Mechanism Experiment (ACME) facilities by RELAP 5 MOD 3.2. This study contributes to identify the simulation error and tries to provide some effective way to establish the better describing model on RELAP 5.