Loss of Flow Accident Mitigation Measures of Mixed Spectrum SCWR-M

Based on a revised version of RELAP5, a model of the mixed spectrum supercritical water cooled reactor (SCWR-M) system was established. Some important parameters were chosen as the main parameters to analysis the transient behaviour of SCWR-M and fix mitigation measures during loss of flow accident (LOFA). Reactor coolant pump (RCP) coast-down time of more than 15 seconds, RPV upper water volume of more than 27 m³, and safety injection of more than 5% of the system design flow are the main mitigation measures for the LOFA of SCWR-M.