Verification of 235U enrichment of fresh VVER-440 fuel assemblies

► Homogeneous/profiled fuel assemblies' enrichment verified by HRGS & MRGS. ► Enrichment of fuel rods in a range of 1.6-4.4%. ► HPGe viewed assemblies from outside, CZT fitted into assemblies' central tube. ► Distinguishing different types of assemblies in 15-20 min measurement time. ► Routine fresh fuel enrichment verification under normal NPP operational conditions.