1st generation 2nd generation 3rd generation
V5H 17ACE7 X2-GEN
Batch burnup capability
(MWd/MTU) 45,000 55,000 65,000
Commercial supply date 1995 2008 2017
FR diameter (mm) 9.50 9.50 9.50
No. of spacer grids 8 9 9
No. of IMFs 3 5 tbc
Spacer grid spring Short contact shape I-type shape Long contact shape
Debris filter Multiple filters Multiple filters Multiple filters