Analysis of physical protection system effectiveness of nuclear power plants based on performance approach

The physical protection system is a set of essential components for the protection of nuclear power plants against all types of threats. There are two methods for analyzing the protection systems effectiveness such as the performance method and the compliance method. In this study, the performance method is used to analyze and evaluate the physical protection system based on the Estimate of Adversary Sequence Interruption (EASI) model. The performance approach makes it possible to evaluate the functioning of the physical protection system elements to verify the overall of the protection system effectiveness. The performance method is easy to apply and gives effective results. The physical protection system effectiveness depends on the nature of the threat, either internal or external.