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.
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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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