Table B.13
Expanded estimated uncertainties Δexpanded for the decay heat, taking into account the main calculation biases for isotopic concentrations from Table B.11 and calculated uncertainties from Table B.12. ΔCmax come from the nuclear data library leading to the highest nuclear data uncertainty (either ENDF/B-VIII.0, JEFF-3.3 or JENDL-4.0). Three combination methods are presented: RSSuc, RSSU (being equal to RSSuc for 1σ), and SUMU.
| Cooling | Decay | Bias due to | Bias | RSSuc | SUMU | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| time | heat | 106Rh | 134Cs | 244Cm | 137Cs | 241Am | 240Pu | 239Pu | 243Am | 242Pu | 234U | Sum | ΔCmax | Δexpanded | Δexpanded |
| (years) | (W/t) | (%) | (%) | (%) | (%) | (%) | (%) | (%) | (%) | (%) | (%) | (%) | (%) | (%) | (%) |
| 0.1 | 57 154 | +34 | -0.3 | +0.2 | +34 | 1.5 | ± 34 | [+0, −35] | |||||||
| 0.2 | 44 028 | +46 | -0.4 | +0.4 | +46 | 1.8 | ± 46 | [+0, −48] | |||||||
| 0.5 | 28 246 | +55 | -0.6 | +0.5 | +55 | 2.3 | ± 55 | [+0, −57] | |||||||
| 1 | 17 309 | +65 | -0.8 | +0.9 | +65 | 3.1 | ± 65 | [+0, −68] | |||||||
| 3 | 6 327 | +60 | -1.0 | +2.0 | -0.1 | -0.1 | +61 | 4.5 | ± 61 | [+0, −66] | |||||
| 5 | 4 333 | +17 | -0.8 | +3.0 | -0.3 | −0.3 | +0.2 | +19 | 4.1 | ± 19 | [+0, −23] | ||||
| 7 | 3 706 | −0.5 | +3.1 | −0.3 | −0.5 | +0.2 | +4.0 | 3.5 | ± 5.3 | [+0, −7.5] | |||||
| 10 | 3 318 | −0.2 | +3.3 | −0.3 | −0.6 | +0.2 | +0.1 | +2.5 | 3.3 | ± 4.1 | [+0.8, -5.8] | ||||
| 30 | 2 375 | +2.1 | −0.3 | −1.0 | +0.3 | +0.2 | +1.3 | 2.5 | ± 2.8 | [+1.2, -3.8] | |||||
| 50 | 1 874 | +1.2 | −0.2 | −2.1 | +0.4 | +0.2 | −0.5 | 2.1 | ± 2.2 | [+2.6, -1.6] | |||||
| 70 | 1 563 | +0.5 | −0.1 | −2.5 | +0.5 | +0.3 | −1.3 | 2.1 | ± 2.5 | [+3.4, -0.8] | |||||
| 100 | 1 281 | +0.2 | −0.1 | −3.0 | +0.6 | +0.3 | −2.0 | 2.2 | ± 3.0 | [+4.2, -0.2] | |||||
| 300 | 710 | −3.6 | +0.9 | +0.5 | −2.2 | 2.4 | ± 3.2 | [+4.6, -0.2] | |||||||
| 500 | 512 | −3.8 | +1.5 | +0.8 | −0.1 | −1.6 | 2.3 | ± 2.8 | [+3.9, -0.7] | ||||||
| 1 000 | 285 | −3.0 | +2.5 | +1.4 | −0.2 | +0.7 | 1.7 | ± 1.8 | [+1.0, -2.4] | ||||||
| 5 000 | 83 | +5.6 | +4.3 | −0.6 | +9.3 | 1.7 | ± 9.4 | [+0, -11] | |||||||
| 10 000 | 56 | +4.8 | +5.6 | −0.5 | +0.1 | +10 | 1.6 | ± 10 | [+0, -12] | ||||||
| 50 000 | 9.1 | +0.4 | +11 | −0.1 | +0.5 | −0.2 | +12 | 2.1 | ± 12 | [+0, -14] | |||||
| 100 000 | 3.4 | +6.9 | +1.2 | −0.4 | +7.7 | 2.0 | ± 7.9 | [+0, -9.7] | |||||||
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