CFD Analysis of the Primary Cooling System for the Small Modular Natural Circulation Lead Cooled Fast Reactor SNRLFR-100

Table 2

Design parameters of SNCLFR-100 core.

Design parameters	Values or characteristics
Number of fuel assemblies	204
Number of control assemblies	36
Number of pins per one fuel assembly	81
Number of pins per one control assembly	72
Pin pitch-to-diameter ratio	1.426
Fuel pin pitch	17.4 (mm)
Fuel pin diameter	12.2 (mm)
Core height	3400 (mm)
Active core height	1000 (mm)
Equivalent core diameter	3460 (mm)
Fuel compositions
Layer 1	PuO2 (16%) + UO2 (84%)
Layer 2	PuO2 (19%) + UO2 (81%)
Layer 3	PuO2 (24%) + UO2 (76%)
Fuel pellet diameter	9.8 (mm)
Cladding outer diameter	12.2 (mm)
Fission gas plenum height	1000 (mm)