Abstract
Small modular reactors (SMRs) are considered to be safer reactor design due to inherent safety concepts and passive safety features. Therefore, in this paper, two novel safety concepts were developed for one of SMR named as System-integrated Modular Advanced Reactor (SMART) designed by South Korea. These safety features include residual heat removal systems concepts. At first, steady-state conditions of SMART with a power output of 100 MWe were obtained by computational techniques. Secondly, two residual heat removal systems were design and integrated with this reactor and calculate various parameters and analyze the performance of the reactor. Neutron kinetics and thermal hydraulic calculations were used to calculate various parameters of the reactor operation. Modelling of passive decay heat removal system was performed for both concepts. Two simulation models were developed that can be used to authenticate the safety assessment of this particular SMRs. The developed optimized simulation model can be very helpful for governing bodies to assess the safety performance of any SMR.