Multiplication factors of single pin hexagonal cells and VVER-1000 reactor assembly

H Prabha, R Karthikeyan, MA Lajoie, G Marleau… - Annals of Nuclear …, 2017 - Elsevier
The multiplication factor of an infinite hexagonal reactor lattice (a repetitive arrangement of
unit hexagonal cells) depends on the pitch of the fuel pins. The length of the side of the unit
hexagonal cell is related with this pitch and represents average moderator volume per fuel
pin A mp. The aim of this paper is to study the trend of the multiplication factor, of these
single pin hexagonal unit cells and VVER reactor assemblies, as a function of the parameter
A mp. This study will provide us the use of an 'effective pitch'to be applied as a cost-effective …
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