Abstract
ABSTRACT This thesis used PCTRAN, a fast-running nuclear power plant simulation code, to analyze potential transients and accidents of the second nuclear power plant in Taiwan. The signals and mechanisms generated when accidents occur are also clarified. Therefore, this work is mainly separated into two parts, which are the improvements of PCTRAN code and the case studies. In the first part, some improvements to the code were made referring to the KSNPP’s publications. The improvements include the water levels, HPCS setpoints, SRV setpoints, turbine trip logic, and turbine stop valve logic. In the second part, this modified code is used for case studies throughout this thesis. The case studies investigated the change of signals and parameters, such as scram, turbine trip, feedwater trip, SRV open, and parameters which are reactor power, mean steam flow, feedwater flow, and water levels.