Use of Simplified Nuclear Power Plant Simulator

Abstract

Simplified nuclear power plant simulator is a tool for simulating normal, abnormal and emergency operation of a nuclear power plant. The nuclear power plant with two loop pressurized water reactor and with inverted U-bend steam generators and dry containment system is considered. One loop with the pressurizer is modeled separately from the other loop without it. The model deals with 138 main input parameters related with the plant parameters such as pressures, temperatures, levels, power, setpoints, concentrations, capacities, masses and dimensionless numbers. The initial conditions contain 110 parameters. 18 initiating events from the set of internal initiating events can be considered. The objective of the work is to show the applicability of the simplified nuclear power plant simulator for modelling of the selected scenarios from a set of selected design basis accidents for the education purposes. Selected initiating events and scenarios have been identified and the data about them was collected. The simulation of the scenarios was performed. The initial conditions have been determined and the operational characteristics were modelled in sense to timely model plant automatic actuations and manual actions of plant operators. The results have been obtained in sense of time dependent curves of the main parameters of interest for showing the state of the plant itself and its systems and subsystems. The obtained results have been compared with the results of other simulations. The differences and the similarities have been discussed. The comparison of the results with some measurements and mostly with other simulations shows some degree of similarity and some differences, which differ among the parameters of interest. In general, the resulted comparisons show acceptability of simulator for education purposes.