DYNAMIC ANALYSIS AND CONTROL SYSTEMS OF PRESSURIZED WATER REACTOR PALO VERDE

• Main Author: Azhari Ra Arsad, Rifki
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/63821
• Institution: Institut Teknologi Bandung

Pressurized water reactor (PWR) Palo Verde is a nuclear reactor that has a thermal power of 3800 MWth. In this study, analysis of the Palo Verde PWR reactor dynamics was carried out on the perturbation input. The models used include the reactor core, steam generator, pressurizer, and sliding-average-temperature (SAT) control system. The model equation is then modified using the Taylor method and solved numerically. Calculation of the dynamics of the Palo Verde PWR produces a graph of changes in thermal power against time, changes in fuel temperature against time, changes in coolant temperature at node 1 and node 2 in the reactor core against respect to time, changes in primary coolant pressure against time, changes in primary coolant temperature in the steam generator against time, changes in primary coolant temperature against respect to time. time, and the change in vapor pressure of the secondary coolant against time. Model validation is performed for each isolated component based on the reference. The validation results show that the model is following the reference. Based on the results obtained, it can be concluded that the external reactivity perturbation is directly proportional to the thermal power, primary coolant pressure, and secondary coolant vapor pressure. The feedwater temperature perturbation is directly proportional to the primary coolant pressure and the secondary coolant vapor pressure. In addition, the thermal power is inversely proportional to the perturbation temperature of the feedwater temperature. The steam valve perturbation coefficient is inversely proportional to the primary coolant and secondary coolant vapor pressures. In addition, the steam valve perturbation coefficient is directly proportional to the thermal power. The heat input perturbation is directly proportional to the thermal power, the primary coolant pressure, and the secondary coolant vapor pressure. External reactivity perturbation has the biggest influence among other perturbations. The use of the SAT control system can keep the cold leg temperature value constant and minimize pressure changes secondary cooling steam when perturbation coefficient of the steam valve. Gradient of external reactivity with respect to cold leg temperature will affect the luctuation shape of graphic responds.