Study of the Reactor Control System of MSHIM in AP1000

Figure 9

The 5% FP/min ramp load decrease simulation results obtained with the improved MSHIM control strategy: (a) desired and real nuclear powers (% FP), (b) AO (%), (c) M-bank position (Step), and (d) AO-bank position (Step) (the prefixes “ORI-” and “MOD-” denote the “original” and “modified,” resp.).

(a)

(b)

(c)

(d)