Long-Term Station Blackout Accident Analyses of a PWR with RELAP5/MOD3.3

Table 2

Times available before core uncovery and significant heatup as a function of depressurization.

Scenario	Time available before
	Depressurization 1.33 MPa		Depressurization 1.57 MPa		Depressurization 2.06 MPa		Depressurization 2.55 MPa
	Core uncovery	Significant core heatup	Core uncovery	Significant core heatup	Core uncovery	Significant core heatup	Core uncovery	Significant core heatup
S0-21	>7 days	>7 days	>7 days	>7 days	>7 days	>7 days	>7 days	>7 days
S0-50	>7 days	>7 days	6 days 2 h	6 days 23 h	5 days 7 h	5 days 22 h	4 days 7 h	4 days 18 h
S0-75	4 days 8 h	4 days 23 h	3 days 17 h	4 days 6 h	3 days 2 h	3 days 12 h	2 days 14 h	2 days 20 h
S0-100	3 day 3 h	3 days 11 h	2 days 17 h	3 days	2 days 6 h	2 days 12 h	1 day 18 h	2 days
S0-150	2 days	2 days 6 h	1 day 18 h	1 day 23 h	1 day 10 h	1 day 16 h	1 day 3 h	1 day 7 h
S0-300	22.4 h	25.3 h	19.8 h	22.3 h	15.4 h	17.9 h	12.4 h	14.5 h
S0-300p	>7 days	>7 days	>7 days	>7 days	>7 days	>7 days	>7 days	>7 days
S1-21	13.6 h	14.2 h	13.2 h	13.8 h	12.5 h	13.1 h	11.9 h	12.6 h
S1-21v1	7.6 h	8.3 h	7.5 h	8.2 h	7.5 h	8.1 h	7.4 h	8.0 h
S1-21v2	7.3 h	8.2 h	7.3 h	7.9 h	7.3 h	7.8 h	7.6 h	8.3 h
S1-21p	17.1 h	18.7 h	16.7 h	18.2 h	15.6 h	17.4 h	14.7 h	16.9 h