PEACH BOTTOM 2 TURBINE TRIP 2 SIMULATION by TRACE/S3K COUPLED CODE

A coupling between the TRACE system thermal-hydraulics code and the SIMULATE-3K (S3K) three-dimensional reactor kinetics code has recently been developed in a collaboration between the Paul Scherrer Institut (PSI) and Studsvik. In order to verify the coupling scheme and the coupled code capabilities the NEA/OECD Turbine Trip benchmark was simulated. The core/plant system data were taken from the benchmark specifications while the nuclear data were generated with Studsvik’s lattice code CASMO-4 and core analysis code SIMULATE-3. The comparison with the experimental data shows that the TRACE/S3K code reproduces well the main transient parameters, namely, the pressure wave propagation, void collapsing and core power response.