VVER-440 FUEL ASSEMBLY ALTERNATIVES FOR HIGH BURNUP
22nd Symposium of AER on VVER Reactor Physics and Reactor Safety (2012, Průhonice, Czech Republic)
CORE DESIGN, OPERATION AND FUEL MANAGEMENT
Presented results are contribution to the gradual evolution of VVER-440 fuel assembly.
Selected alternative variants of ?classical? assembly with the shroud and pin enrichment limit
5 % U235 (with one exception) are compared with recent assembly in exploitation – Gd2 with
mean enrichment 4,87% U235 (reference). Influence of in-assembly power peaking on
operation limit margins is evaluated.