Preliminary Evaluation of a Nuclear Scenario Involving Innovative Gas Cooled Reactors

Table 8

GCFR Major target parameter: reference values.

Reactor design parameters
Reactor thermal power		2400 MWth
Efficiency		48% (direct cycle helium)
Coolant inlet temperature		490°C
Coolant out temperature		850°C
Height/diameter ratio		0.65
Fissile height [mm]		2300
N° fuel assemblies		162+120
N° control rods		24
N° reflector assemblies (mixture of Zr3Si2, SiC, and He),		168
Nominal coolant pressure [MPa]		7.0
Power density		100 MW/m^3
Core
Core external radius		300 cm
Core height		230 cm
(U, Pu)C fraction (%vol)		56
SiC (%vol)		16
Helium (%vol)		28
Density [g/cc]	(U,Pu)C	11.5855 (85% TD)
	SiC	3.16
	He	3.53⋅10^−3 (Tref = 660°C; P = 7 MPa)
Reflectors
Axial top reflector height		50 cm
Axial bottom reflector height		50 cm