Preliminary Evaluation of a Nuclear Scenario Involving Innovative Gas Cooled Reactors

Table 3

EPR parameters adopted for the model [19].

Reactor design parameters
Thermal power	4500 MWth
N° of loops	4
Heat generated in fuel	97.4%
Nominal pressure	155 bar
Thermal design flow rate/loop	27195 m^3/h
Ave. velocity along fuel rods	4.8 m/s
Nominal inlet temperature	295.7 °C
Ave. in core temperature	313.7 °C
Ave. in vessel temperature	312.8 °C
Ave. core heat flux	54.7 W/cm^2
Ave. linear power density	163.4 W/cm
Fuel assembly (dimensions given at 20°C)
Rod array	17×17
N° assembly	241
Fuel rods/assembly	265
Fuel assembly pitch	21.504 cm
Fuel assembly length	480 cm
Lattice rod pitch	1.26 cm
Overall transverse dimensions	21.4×21.4 cm
Guide thimbles/assembly	24
Fuel rods (dimensions given at 20°C)
Number	63865
Outside diameter	9.50 mm
Diametrical gap	0.17 mm
Clad thickness	0.57 mm
Pellet diameter	8.19 mm