CATHARE Multi-1D Modeling of Coolant Mixing in VVER-1000 for RIA Analysis

Table 1

Initial state.

Parameter	Plant data	Cathare 12 sectors	Cathare 16 sectors	Cathare 24 sectors	Uncertainty
Core power, MW	281	281	281	281	± 60
Pressure above the core, MPa	15.59	15.608	15.605	15.605	± 0.3
Cold leg no. 1 coolant temp, K	541.75	541.75 (BC)	541.75 (BC)	541.75 (BC)	± 1.5
Cold leg no. 2 coolant temp, K	541.85	541.85 (BC)	541.85 (BC)	541.85 (BC)	± 1.5
Cold leg no. 3 coolant temp, K	541.75	541.75 (BC)	541.75 (BC)	541.75 (BC)	± 1.5
Cold leg no. 4 coolant temp, K	541.75	541.75 (BC)	541.75 (BC)	541.75 (BC)	± 1.5
Mass flow rate 1, kg/s	4737	4737	4737	4737	± 200
Mass flow rate 2, kg/s	4718	4717.9	4718	4718	± 200
Mass flow rate 3, kg/s	4682	4682	4682	4682	± 200
Mass flow rate 4, kg/s	4834	4834	4833.8	4833.9	± 200
Reactor mass flow rate, kg/s	18971	18971	18971	18971	± 800
Hot leg no. 1 coolant temp, K	545	544.76	544.66	544.65	± 1.5
Hot leg no. 2 coolant temp, K	545.9	544.70	544.68	544.68	± 1.5
Hot leg no. 3 coolant temp, K	544.9	544.71	544.70	544.71	± 1.5
Hot leg no. 4 coolant temp, K	545	544.84	544.84	544.83	± 1.5
Reactor pressure drop, MPa	0.418	0.417	0.418	0.418	± 0.043