LAUSR

Abstract The analysis of fuel rod failure character is the key to a real-time detection system for fuel rod failure in a pressurized water reactor (PWR). We introduce an analysis code for fuel rod failure character in PWRs that allows online analysis and offline usage. The fuel rod failure data from some nuclear reactors were used to verify the analysis code. The results show that the number of failed fuel rods calculated by the analysis code based on the isotopes of Kr and Xe in the fission gases fits very well with the actual number of failed fuel rods. The real-time detection system for fuel rod failure in PWRs and the analysis code for fuel rod failure character are of great significance for the safe operation of nuclear reactors.