RELAP5/MOD3.3 Code Validation with Plant Abnormal Event

Table 4

Quantitative results for different time intervals.

	Original FFTBM			FFTBM by signal mirroring
	AA	AA	AA	AA	AA	AA
	(−20 seconds–	(0 second–	(0 second–	(−20 seconds–	(0 second–	(0 second–
	0 second)	80 seconds)	1800 seconds)	0 second)	80 seconds)	1800 seconds)
Core power	0.005	0.239	0.234	0.007	0.306	0.304
RCS average temperature	0.000	0.008	0.009	0.000	0.010	0.010
PRZ pressure	0.003	0.041	0.055	0.003	0.050	0.067
PRZ level	0.008	0.144	0.506	0.008	0.180	0.450
SG 1 pressure	0.010	0.087	0.079	0.010	0.115	0.106
SG 1 NR level	0.005	0.236	0.277	0.006	0.350	0.330
SG 1 steam flow	0.018	0.704	0.694	0.020	0.895	0.879
SG 2 steam flow	0.022	0.655	0.652	0.022	0.780	0.787