Code Development in Coupled PARCS/RELAP5 for Supercritical Water Reactor

Table 2

SCWR parameters.

Fuel Pin		Fuel assembly
Fuel material	UO2	Number of fuel rods	240
Fissile enrichment	5%	Number of burnable absorber	60
UO2 density	10.4215 g/cm^3	Number of water rods	36
Fuel radius	0.439 cm	Number of control rods	12
Pellet to cladding gap	0.008 cm	Water rod width	3.36 cm
Cladding thickness	0.063 cm	Water rod wall thickness	0.04 cm
Fuel pitch	1.12 cm	Fuel assembly pitch	28.82 cm
P/D	1.098	Assembly wall thickness	0.3 cm
Cladding and core structure material	MA956	Interassembly gap	0.2 cm
Burnable absorber		Core
Burnable absorber material	ZrB2	Thermal power	3575 MW
ZrB2 density	6.08 g/cm^3	Number of fuel assemblies	145
Fuel material	UO2	Heated fuel height	4.27 m
Fissile enrichment	5%	Total fuel pin height	4.87 m
UO2 density	10.4215 g/cm^3	Effective diameter	3.93 m
Fuel radius	0.439 cm	Volumetric power density	69 MW/m^3
BA cover thickness	0.0044 cm	Average linear heat rate	19.2 kW/m
Pellet to cladding gap	0.0036 cm	Fuel depletion plan	3 cycles
Cladding thickness	0.063 cm	Average burnup	0/12.5/25 GWd/MTU
Control rod		Thermal-hydraulic parameters
Control rod material	B4C	System pressure	25 MPa
B4C density	2.59 g/cm^3	Coolant flow rate	1843 kg/s
Control rod radius	0.662 cm	Bypass ratio, η	10% (184 kg/s)
Control rod guide tube inner radius	0.912 cm	RPV inlet temperature	280°C
Control rod guide tube thickness	0.04 cm	RPV outlet temperature	500°C
		Thermal efficiency	44.80%