Xenon Stability Analysis for 1000 MWe PWR Core

Since PWR is inherently stable toward total power oscillations and it is protected by the control and protection system, our analysis focuses on xenon-induced power oscillations, including axial oscillation and radial oscillation. This paper uses 1D and 3D programs to build Xenon transients, and analyzes axial oscillation and radial oscillation, to validate that the core is inherently stable or can be controlled toward xenon-induced oscillations. The results show that the core is inherently stable toward radial xenon-induced oscillations. Stability of the first cycle is worse than that of the equilibrium cycle. But through the operation by the control system, the core can stay safe, and the fuel design limit can be respected.