Calculations for a BWR Lattice with Adjacent Gadolinium Pins Using the Monte Carlo Cell Code Serpent v.1.1.7

Table 1

Problem specification.

Fuel
Material	UO2
Density	10 g/cm^3
Temperature	600^ºC
U-235 enrichment	3% wt
Diameter	1 cm
Gd-pin poison	Gd2O3
Poison percentage on Gd-Pin	3% wt
Average power density	20 W/g
Clad
Material	Zircaloy-2
Density	6.55 g/cm^3
Temperature	300^ºC
Inner diameter	1 cm
Outer diameter	1.2 cm
Moderator
Material	H2O
Void	0%
Condition	Saturated at 286^ºC and 70.06 bar
Lattice pitch	1.6 cm