Open Access

Table 2

Reference core main characteristics.

General characteristics Number of fuel assemblies 77
Fissile height 2.15 m
Equivalent diameter 2.13 m
Height/Diameter ratio 1.01
Thermal power 550 MWa
Average linear power 126 W/cm
Internal/External vessel diameter 3.2/3.5 m
Reflector Iron
Single batch refuelling (reference cycle) Enrichment 4.95%
Gadolinium content 44 pins/8%w
Radial assembly form factor 1.24
3D core form factor 3.0
Maximum linear power < 465 W/cm
Cycle length 38 months
Burn-up 27 GWd/tUO2
Two-batch refuelling Enrichment 4.95%
Gadolinium content 32 pins/9%w
Radial assembly form factor 1.16
3D core form factor 2.2
Maximum linear power < 322 W/cm
Cycle length 27 months
Burn-up 38 GWd/tUO2
▵LCOE (compared to single batch) +2 €/MWh

The thermal power is, in this study, considered to be 550 MWth, including 20 MWth of margin (conservative on the cycle length and DNBR), compared to the reference 530 MWth [2].

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