Research Article
Investigation of a Coolant Mixing Phenomena within the Reactor Pressure Vessel of a VVER-1000 Reactor with Different Simulation Tools
Table 3
Comparison of TRACE predictions with plant data for the initial state.
| Parameter | Initial state | Accuracy | TRACE | Deviation |
| Thermal power, MW | 281 | | 281 | 0 | Pressure above core, MPa | 15.593 | | 15.592 | 0.001 | Pressure drop over RPV, MPa | 0.418 | | 0.404 | 0.014 | Coolant temperature at core inlet #1, K | 541.75 | | 541.78 | | Coolant temperature at core inlet #2, K | 541.85 | | 541.88 | | Coolant temperature at core inlet #3, K | 541.75 | | 541.78 | | Coolant temperature at core inlet #4, K | 541.75 | | 541.78 | | Coolant temperature at core outlet #1, K | 545.00 | | 544.63 | 0.37 | Coolant temperature at core outlet #2, K | 545.00 | | 544.70 | 0.30 | Coolant temperature at core outlet #3, K | 544.90 | | 544.61 | 0.29 | Coolant temperature at core outlet #4, K | 545.00 | | 544.62 | 0.38 | Mass flow rate of loop #1, kg/s | 4737 | | 4749 | | Mass flow rate of loop #2, kg/s | 4718 | | 4735 | | Mass flow rate of loop #3, kg/s | 4682 | | 4750 | | Mass flow rate of loop #4, kg/s | 4834 | | 4737 | 97 |
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