Characteristic Value
Dimensions of hexahedral duct, mm 184×3.5
Type of duct steel EP-450
Number of fuel elements (FEs) in FA 331
Diameter and thickness of FE cladding, mm 8.6 x 0.55
Type of FE cladding steel Modified chromium steel
Effective fuel density, g/cm3 11.5
Active core height, mm 800
Sodium layer height, mm 400
Height of the upper boric shield, mm 650
Height of the lower steel shield, mm 450