Process of Air Ingress during a Depressurization Accident of GTHTR300

Table 2

Onset time of natural circulation.

T[]	He/Air	He/N2	Ne/Ar	N2/Ar
30	85 min	93 min	135 min	175 min
50	65 min	70 min	110 min	132 min
70	60 min	50 min	—	120 min
density ratio	1.38/10	1.43/10	5/10	7/10