Design, Simulation and Evaluation of Pressure Control System in a High-pressure Research Test loop

Design and simulation of research test facilities have great importance among countries nuclear technology. The operation of the pressure control system plays an essential role in the safe operation of these research test loops. In this paper, high-pressure and high-temperature circuit are designed and simulated using Aspen HYSYS engineering software. A pressure control system is connected to the primary circuit to control the simulated circuit pressure. This system keeps the circuit pressure constant at a certain level (reference limit) by injecting and removing nitrogen in the upper head of the pressurizer. The simulation includes a PID control system designed within the Simulink MATLAB, in coupling with Aspen HYSYS engineering software. To ensure the correct operation of the pressure control system in transients, various scenarios have been performed to evaluate the pressure control system.