Study on the Evaluation and Simulation of Steady State Behavior and Reactor Safety Concept for Integral Pressurized Water Reactor

摘要

In this study, a research has been carried out on the normal operational state concerning with the reactor under different load changes as well as simulation of pool type reactor concept by the use of thermal hydraulic system code Relap5/Mod3.4 for Integral Pressurized Water Reactors (IPWR?s). These reactors belongs to the class of small and medium sized nuclear reactors (SMR?s) and are designed in such away that most of the primary loop components are housed in a single Reactor Pressure Vessel (RPV). In this study, the reactor under study is the Inherent safe uranium zirconium hydride nuclear power reactor INSURE-100. Since, the conceptual design study phase of this reactor has been completed so the current research focuses on the normal operation which is inter related with different load characteristics as well as for the safety concept the considered reactor is simulated as a pool type. The effect of load changes on the different components of the reactor have been studied and are figure out in the graphical as well as in a parametric way. The current study also focuses on the simulation of pool type reactor concept, for this case the pressurized containment, which is partially filled with water and acts as a suppression pool. Finally the load percentage results and the steady state results obtained from the pool type reactor concept have been extracted from the graphical approach and are depicted in a parametric way and are sorted out in a table. The purpose of conducting the research is to evaluate the steady state behavior as well as safety analysis of the reactor.