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All issues Volume 2 (2016) EPJ Nuclear Sci. Technol., 2 (2016) 29 Full HTML
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Table 4

Calculated relative reproduction factors and fission:capture ratios for two and three-component mixed oxide (MOX) concepts with 1, 2 and 3% by mass plutonium loading in MOX fuel elements.

Fuel concept description Reproduction factor (η) Fission:capture ratio (α−1)
1%Pu 2%Pu 3%Pu 1%Pu 2%Pu 3%Pu
Natural uranium 1.00 1.00 1.00 1.00 1.00 1.00
2.5% enriched UO2 1.33 1.33 1.33 2.30 2.30 2.30
1.2% enriched UO2 1.16 1.16 1.16 1.46 1.46 1.46
2.5% UK inventory Pu in DU host [5] (UK CANMOX mimic) 1.29 1.29 1.29 1.24 1.24 1.24
1.8% (U-Th)O2 [20] 1.11 1.11 1.11 1.28 1.28 1.28
EPR reprocessed uranium 1.08 1.08 1.08 1.20 1.20 1.20
0.65% UK inventory Pu in DU host 1.06 1.06 1.06 0.85 0.85 0.85
1. Depleted U, UK inventory Pu 1.14 1.26 1.31 0.98 1.18 1.28
2. Depleted U, UO2-EPR Pu 1.10 1.22 1.27 0.92 1.11 1.20
3. Depleted U, MOX-EPR Pu 1.00 1.10 1.15 0.76 0.90 0.97
4. MAGNOX depleted U, UK inventory Pu 1.15 1.26 1.31 1.01 1.20 1.30
5. MAGNOX depleted U, UO2-EPR Pu 1.12 1.22 1.27 0.96 1.13 1.22
6. MAGNOX depleted U, MOX-EPR Pu 1.02 1.11 1.16 0.80 0.92 0.99
7. UO2-EPR reprocessed U, UK inventory Pu 1.25 1.31 1.34 1.37 1.43 1.47
8. UO2-EPR reprocessed U, UO2-EPR Pu 1.22 1.28 1.30 1.32 1.37 1.40
9. UO2-EPR reprocessed U, MOX-EPR Pu 1.16 1.19 1.21 1.19 1.19 1.19
10. Th, depleted U, UK inventory Pu 0.97 1.13 1.20 0.72 0.96 1.10
11. Th, depleted U, UO2-EPR Pu 0.94 1.10 1.17 0.67 0.88 1.01
12. Th, depleted U, MOX-EPR Pu 0.83 0.98 1.05 0.55 0.71 0.80
13. Th, MAGNOX depleted U, UK inventory Pu 0.98 1.14 1.21 0.75 0.98 1.12
14. Th, MAGNOX depleted U, UO2-EPR Pu 0.95 1.10 1.18 0.69 0.90 1.02
15. Th, MAGNOX depleted U, MOX-EPR Pu 0.85 0.99 1.06 0.58 0.73 0.82
16. Th, UO2-EPR reprocessed U, UK inventory Pu 1.10 1.20 1.25 1.04 1.18 1.27
17. Th, UO2-EPR reprocessed U, UO2-EPR Pu 1.08 1.17 1.22 0.99 1.11 1.18
18. Th, UO2-EPR reprocessed U, MOX-EPR Pu 1.01 1.08 1.12 0.88 0.95 1.00
19. Th, AGR reprocessed U, UK inventory Pu 1.10 1.19 1.25 1.03 1.18 1.27
20. Th, natural U, UK inventory Pu 1.07 1.18 1.24 0.95 1.12 1.23

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