Conceptual Design of Passive Residual Heat Removal System for 10 MW Molten Salt Reactor

A conceptual design of the passive residual heat removal system which can meet the safety requirement was developed for 10 MW Molten Salt Reactor Experiment（MSRE） designed by ORNL. The constitution, main components and main design parameters of the system were presented. Thermal-hydraulic behaviors such as natural circulation and heat removal ability were numerically analyzed. The results show that, the system can meet the design requirements of heat removal and has enough safety margin. Furthermore, the heat removal rate of the system is approximate to the decay heat generation rate, making the temperature of the molten salt decrease steadily.