RELAP5 Analyses of ROSA/LSTF Experiments on AM Measures during PWR Vessel Bottom Small-Break LOCAs with Gas Inflow

Table 1

Major conditions of LSTF tests.

Item	Condition
	SP3	SP4	SP6
Break size	0.2%
HPI system	Total failure
Onset of SG depressurization and AFW injection	10 min after safety injection signal
Action of SG depressurization	Primary depress. rate of 55 K/h	Full opening of SG RVs	Primary depress. rate of 55 K/h
Onset of 2nd SG depressurization	None	None	Pressure vessel liquid level < hot leg level
Action of 2nd SG depressurization	None	None	Full opening of SG RVs
AFW injection duration	30 min	Continuous injection	Continuous injection (planned)