Advanced Presentation of BETHSY 6.2TC Test Results Calculated by RELAP5 and TRACE

Table 1

Comparison of initial conditions for BETHSY 6.2TC test.

Parameter	Measured	RELAP5	TRACE
Core thermal power (kW)	2863±30	2864	2860
Pressurizer pressure (MPa)	15.38±0.15	15.38	15.38
Pressurizer level (m)	7.45±0.2	7.45	7.45
Total flow (kg/s)	16.81 (calculated from core power)	16.84	16.61
Core inlet temperature (K)	557.2±0.4	557.2	557.2
Core outlet temperature (K)	588.2±0.4	588.1	588.8
Reactor coolant system mass (kg)	1984±50	1948	1948
Secondary side pressure per SG (MPa)	6.84±0.07	6.83	6.69
Steam generator level per SG (m)	11.1±0.05	11.1	11.1
Feedwater temperature (K)	523.2±4	523.2	523.2
Heat loss (kW)	54.82	N.A.	N.A.
Downcomer to upper head flow (kg/s)	0.047	0.047	0.047