Research Article
Use of the Natural Circulation Flow Map for Natural Circulation Systems Evaluation
Table 1
Relevant hardware characteristic of the PWR
simulators considered for the NCFM creation.
| | Item | 1 | 2 | 3 | 4 | 5 | 6 | | Semiscale Mod2A | Lobi Mod2 | Spes | PKL-III | Bethsy | Lstf |
| | Reference reactor and
power (MWt) | W-PWR 3411 | KWU-PWR 3900 | W-PWR 2775 | KWU-PWR 3900 | FRA-PWR 2775 | W-PWR 3423 | | No. of fuel rod simulators | 25 | 64 | 97 | 340 | 428 | 1064 | | No. of U-tubes per SG | 2/6 | 8/24 | 13/13/13 | 30/30/60 | 34/34/34 | 141/141 | | Internal diameter of
U-tubes (mm) | 19.7 | 19.6 | 15.4 | 10.0 | 19.7 | 19.6 | | Actual Kv | 1/1957 | 1/589 | 1/611 | 1/159 | 1/132 | 1/48 |
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