Table 1: VVER-1000 geometry and operating conditions [18].

Operating conditionValue

Core height in the working state (cm)355
Rod diameter (mm)9.1
Pitch (mm)12.75
Fuel pellet materialUO2
Number of fuel rods in the fuel assembly311
Average linear heat rate (W/cm)166.7
Coolant flow rate (m3/h)84800
Inlet pressure (MPa)16
Outlet pressure (MPa)15.70
Temperature at the inlet (°C)291