Uncertainty Analysis of the Potential Hazard of MCCI during Severe Accidents for the CANDU6 Plant

Table 1

Timings of key events for the station blackout scenario base case in the Wolsong-1 plant (based on ISAAC calculation).

Event	Time (base case)
	hours, (seconds)
SG inventory depletion	2.8 (10,032)
Pressure tube rupture	4.0 (14,272)
CFVS first open	6.7 (24,034)
Calandria vessel inventory depletion	11.5 (41,558)
Calandria vessel failure	45.6 (164,188)
Calandria vault inventory depletion	49.3 (177,502)
Calandria vault floor rupture	101.0 (363,473)
Reactor building failure	102.4 (368,484)