An automation system was developed for the fuel lattice radial design of BWRs.
An enrichment group peaking equalizing method is applied to optimize the design.
Several heuristic rules and restrictions are incorporated to facilitate the design.
The CPU time for the system to design a 10x10 lattice was less than 1.2 h.
The beginning-of-life LPF was improved from 1.319 to 1.272 for one of the cases.