Abstract
PCTRAN code, developed by the MST Research, can simulate nuclear power plant operation and transient accidents. The software has introduced different versions for various nuclear power plant types, including PCTRAN KuoSheng version for simulation of KuoSheng Nuclear Power Station (KSNPS). Actual operating data from Kuosheng has not been used for verifications of PCTRAN KuoSheng model yet. Therefore, we took three transient cases of start-up tests prior to commercial operation for KSNPS to verify PCTRAN KuoSheng model. They are (1) load rejection test in 100% power, (2) recirculation pump trip test in 68% power, and (3) feedwater pump trip in 96% power. For completeness, we then added two transient cases simulated in KSNPS Simulator. They are (1) manual scram in 100% power, (2) all of Main Steam Isolation Valves (MSIV) closing in the same time in 100% power. From comparisons of simulation results of PCTRAN KuoSheng and actual data of above transient cases, we identified the causes for the discrepancies. Then, we corrected the parameters and modified program of PCTRAN KuoSheng and conducted simulations of five transient cases again. In conclusion, the modified PCTRAN KuoSheng has shown its acceptable consistency compared with the existing data from KuoSheng Nuclear Power Station.