A differential model for equivalent parameters Application to two residual heat removal systems parameterization and interpretation of results Original Research Article

The work presented in this paper has been carried out in the frame work of the innovation and future reactors R&D activities in the CEA-France. It consists of the comparison of two residual heat removal systems (RHRSʹs) with regard to their respective reliability and maintainability. High parameterization capability was required in order to enable the identification of the relative weight of different sub-systems and principal components in each RHRS. An exhaustive parameteric analysis was carried out using the Differential Model for Equivalent Parameters (DMEP). Parameters like components reparability, human failures and common mode effects could be analysed for both RHRS candidates. Some intuitive designer choices have also been assessed.