Open Access
Table 5
Sequence of large break loss of coolant accident (LOCA).
| Time | Event |
|---|---|
| 0 s | Double-ended guillotine break of cold leg A |
| 0.1 s | Chain reaction is stopped by lack of moderation |
| 3 s | Low PRZ pressure causes a reactor protection signal |
| 3.15 s | Steam line and feedwater line isolation |
| 4 s | Reactor scram |
| 4.5 s | Reactor vessel has lost all coolant |
| 5 s | Opening of CMT injection valves |
| 5.5 s | Accumulators injection starts |
| 6 s | Coolant pumps stop on their inertia |
| 9 s | Passive primary cooling actuation |
| 9.5 s | Emergency condensers (ECs) are connected to steam generators (SGs) |
| 45 s | Maximum clad surface temperature reached (725 °C) |
| 77 s | End of accumulators injection |
| 98 s | CMTs injection starts |
| 13 min | CMTs low level causes opening of the ADS 1st stage |
| 15 min | Opening of the ADS 2nd stage |
| 16 min | Core is flooded again by primary coolant |
| 43 min | Opening of the ADS final stage |
| 90 min | End of simulation |
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.