Research Article
Assessment of Severe Accident Depressurization Valve Activation Strategy for Chinese Improved 1000 MWe PWR
Table 2
Comparison of RCS depressurization progression for TMLB’ accident.
| | Without natural circulation | With natural circulation |
| Progression (s) | | | Start of accident | 0.0 | 0.0 | Reactor shutdown | 0.0 | 0.0 | Opening SADV manually | 7410 | 8320 | Accumulator activation | 7800 | 8580 | Start of core melt | 12450 | 15010 | Lower head of PRV fails | 20100 | 21945 | RCS pressure when lower head of RPV fails/MPa | 0.55 | 0.28 |
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