Table 4.
keff uncertainties obtained for the MISTRAL-1 core at 294 and 354 K due to the model parameter uncertainties reported in Table 2. This uncertainty indicator expressed in pcm/K represents a calculation bias on keff relatively to the effective temperature uncertainty. The digits in parentheses come from the statistical uncertainty due to the Monte-Carlo calculations.
| Test | Thermal | 294 K |
354 K |
||
|---|---|---|---|---|---|
| case | Scattering laws | Δkeff | calculation bias | Δkeff | calculation bias |
| i = 1 | H2O | ±50 (6) pcm | ±2.5 pcm/K | ±56 (3) pcm | ±2.9 pcm/K |
| i = 2 | UO2 | ±27 (3) pcm | ±2.7 pcm/K | ±12 (3) pcm | ±1.2 pcm/K |
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