Research Article

Uncertainty and Sensitivity Studies with TRACE-SUSA and TRACE-DAKOTA by Means of Steady State BFBT Data

Table 1

Main features of assembly type 4.

Parameter (unit)Value

Number of fuel rods (−)60
Outer diameter (mm)12.3
Rod pitch (mm)16.2
Heated length (mm)3708
Number of water rods (−)1
Channel box inner width (mm)132.5
Channel box corner radius (mm)8
In channel flow area (mm²)9463
Number of spacers (−)7
Spacer type (−)Ferrule
Spacer form loss coefficient (−)1.2
Spacer location (mm)455, 967, 1479, 1991, 2503, 3015, 3527
Heater outer diameter (mm)7.3
Heater material (−)Nichrome
Insulator outer diameter (mm)9.7
Insulator material (−)Boron nitride
Cladding thickness (mm)1.3
Cladding material (−)Inconel 600/beryllium
Axial power profile (−)uniform