RELAP5/MOD3.3 Analysis of the Loss of External Power Event with Safety Injection Actuation

Table 2

Initial conditions.

Variable	Plant measured	RELAP5
Reactor power (%)	100.3	100
RCS average temperature (K)	577.96	578.15
Hot leg temperature number 1/2 (K)	596.87/596.92	596.79/596.79
Cold leg temperature number 1/2 (K)	559.22/559.19	559.51/559.32
Pressurizer pressure (MPa)	15.509	15.513
Steam generator pressure number 1/2 (MPa)	6.327/6.321	6.438/6.415
Feedwater flow number 1/2 (kg/s)	550.4/549.6	541.34/544.47
Steam flow number 1/2 (kg/s)	551.8/549.3	541.3/544.5
Feedwater temperature (K)	N.A.	565.55
Steam generator narrow range level (%)	69.29/69.22	69.3/69.3
RCS boron concentration	1687 ppm	1704 ppm