Application of the core-wise Green's function method to the in-core fuel management for Qinshan Nuclear Power Plant

The core-wise Green's function method (CGFM) was developed based on the neutron diffusion equations. The fast in-core fuel management code CGFMAC was encoded based on CGFM by modifying the coarse-mesh finite difference fuel management code ADMARC, and applied to calculate cycle-1 and cycle-2 in the Qinshan Nuclear Power Plant. The numerical results show that this method is about 10 times faster than the advanced nodal method and 15-30 times faster than ADMARC while their calculation accuracies are similar to each other. This method is suitable for computation of core refueling on a large scale, especially for optimization computation of core refueling and on line and real-time tracing.