Research Article
Containment Depressurization Capabilities of Filtered Venting System in 1000 MWe PWR with Large Dry Containment
Table 7
Overall safety improvement effect by the installation of the CFVS.
| | Category | Internal event | External event | Current design | w/CFVS | | Fire | Seismic |
| | No containment failure | 66.3 | 40.0 | 39.3 | 43.1 | 87.3 | | Early containment failure | 0.5 | 1.0 | 1.0 | 0.9 | 0.9 | | Late containment failure | 12.5 | 46.1 | 48.2 | 43.1 | 0.0 | | Base-mat melt through | 3.8 | 4.8 | 4.5 | 4.4 | 4.4 | | CFBRB | 5.9 | 0.2 | 0.3 | 1.1 | 0.0 | | Isolation failure | 1.5 | 6.9 | 5.4 | 4.9 | 4.9 | | Containment bypass | 9.5 | 1.1 | 1.2 | 2.4 | 2.4 |
| | Sum | 100 | 100 | 100 | 100 | 100 |
|
|
