Research Article
Design of the VISTA-ITL Test Facility for an Integral Type Reactor of SMART and a Post-Test Simulation of a SBLOCA Test
Table 4
Major sequence of events for SBLOCA.
| |
Event | Set points/time delay | Time (seconds) | | SMART | VISTA ITL-Ideal | SMART (VISTA-equivalent) | VISTA-Actual | VISTA-Ideal | VISTA-Ideal HS |
| | Break | — | — | 0 | 0 | 0 | 0 | |
Reach LPP set point | PZR pres. = | PZR pres. = | 285.5
(171.6) | 129.0 | 142.1 | 140.2 |
LPP reactor trip signal
(i) FW Stop
(ii) Pump coast down |
1.1 s delay |
0.66 s delay |
286.6
(172.3) |
129.7 |
142.7 |
140.9 | |
Reactor trip-curve start | 1.6 s after LPP | 0.96 s after LPP | 287.1
(172.6) | 130.0 | 143.0 | 141.2 | |
PRHR actuation signal (PRHRSAS) | 2.2 s after LPP | 1.32 s after LPP | 287.7
(172.9) | 130.3 | 143.4 | 141.5 | |
PRHRS IV open | 5 s delay | 3 s delay | 292.7
(175.9) | 133.3 | 146.4 | 144.5 | |
MSIV/FIV close | 15 s delay | 9.01 s delay | 302.7
(181.9) | 139.0 | 152.4 | 150.6 | |
Safety injection signal (SIAS) | BPV pres. = | BPV pres. = | 663.6
(398.8) | 287.0 | 317.5 | 313.2 | |
Safety injection start | 30 s delay | 18.03 s delay | 693.6
(416.8) | 305.0 | 335.5 | 331.2 | | Test end | — | — | 7000
(4206.7) | 4300 | 4300 | 4300 |
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