Input Calibration and Validation of RELAP5 Against CIRCUS-IV Single Channel Tests on Natural Circulation Two-Phase Flow Instability

Table 2

Varied uncertain input parameters in the parametric study for the test section.

Input parameter	Base input	Varied values
Inlet temperature (°C)	89.0	88.0; 90.0
Riser heat loss (kW)	0	0.3; 0.5
Power (%)	100	95; 105
Inlet loss coefficient	0	100; 200
Additional outlet static pressure (mbar)	0	10; 20