ASTEC–MAAP Comparison of a 2 Inch Cold Leg LOCA until RPV Failure

Table 2

Key automatic and operator actions.

EVENT	CONDITION
Reactor trip	Pressurizer pressure falls below 131 bar
Isolation of accumulators	Primary pressure falls below 15 bar
Steam generator regulation to 33% (narrow range)	t = t(Safety Injection Actuation)
Reactor coolant pump trip	Pressurizer pressure falls below 118 bar
Safety injection actuation	Pressurizer pressure falls below 119 bar
Containment sprays actuation	Containment pressure rises above 2.4 bar