RELAP5/MOD3.3 Code Validation with Plant Abnormal Event

Table 2

Initial conditions for reactor trip transient.

Variables	Unit	Measured	Measured	Design	Calculated	Calculated	Calculated
		(average)	(𝑡=0 second)	accuracy	(𝑡=−2000 seconds)	(𝑡=−500 seconds)	(𝑡=0 second)
Pressurizer pressure	MPa	15.48	15.48	± 0.37 %	15.52	15.51	15.52
SG 1 pressure	MPa	6.42	6.42	± 0.37 %	6.59	6.43	6.47
SG 2 pressure	MPa	6.40	6.40	± 0.37 %	6.57	6.42	6.45
Feedwater 1 mass flow rate	kg/s	499.0	504.0	± 0.38 %	495.2	495.4	495.5
Feedwater 2 mass flow rate	kg/s	503.6	500.6	± 0.38 %	497.7	498.1	498.1
Main steamline 1 mass flowrate	kg/s	493.9	492.6	± 0.46 %	495.2	495.4	495.4
Main steamline 2 mass flowrate	kg/s	501.6	501.5	± 0.46 %	497.8	498.1	498.1
Pressurizer liquid level	%	53.02	52.95	± 0.37 %	56.10	51.88	52.63
Steam generator 1 NR level	%	69.25	69.15	± 0.37 %	69.34	69.26	69.28
Steam generator 2 NR level	%	69.06	69.40	± 0.37 %	69.34	69.25	69.28
Nuclear power	%	91.72	91.94	± 0.26 %	91.63	91.78	91.77
Cold leg 1 temperature	K	559.41	559.36	± 0.29 %	560.74	559.15	559.51
Cold leg 2 temperature	K	559.57	559.53	± 0.29 %	560.59	558.99	559.35
Hot leg 1 temperature	K	593.92	593.73	± 0.29 %	594.64	593.23	593.55
Hot leg 2 temperature	K	594.58	594.62	± 0.29 %	594.64	593.23	593.55
Average RCS 1 temperature	K	576.63	576.52	± 0.32 %	577.69	576.19	576.53
Average RCS 2 temperature	K	577.05	577.05	± 0.32 %	577.62	576.11	576.45
Programed Tavg	K	576.90	576.90	± 0.39 %	576.97	576.97	577.00