Analysis of the turbine trip test performed at the Chin-Shan Power Station Unit 1 with plant analyzer

In order to improve nuclear power plant safety, plant analyzer technology has been transferred to Taiwan Power Company (TPC) from Brookhaven National Laboratory (BNL). The BNL boiling water reactor (BWR) plant analyzer program was converted and modified for CHIN-SHAN power station with ADSIM simulation language. The plant analyzer incorporates the special purpose peripheral processor AD-100 of Applied Dynamic International Company and detailed mathematical models. With the fast computing features of the AD-100, the plant analyzer can carry out accurate and fast simulations of nuclear power pant transients. In order to qualify this program, simulation results are benchmarked against power test data. During a power test of CHIN-SHAN power station unit 1 of TPC, a 1,775-MW(thermal) BWR/4, a turbine trip test was performed. This test was performed from a steady-state condition of 83% rated core power and 80% rated core flow. It was initiated by manual trip of the turbine. This turbine trip transient is simulated with the plant analyzer and compared with plant test data. The simulation results show that the plant analyzer catches the trends of this transient very well