Table 15.
Summary table of the calculated uncertainties (Δ corresponds to 1σ) for both benchmarks. For the decay heat, the C/E − 1 ±1σ over the six measurements is given. RR means fission reaction rates. For all quantities except the decay heat, values are given at EOL. If not specified, uncertainties concern nuclide concentrations. Data comes from the ULC analysis.
| Pincell | Assembly | Pincell | Assembly | ||
|---|---|---|---|---|---|
| Decay heat | ( + 2.6 ± 0.9)% | ( − 1.1 ± 1.2)% | Δk∞ | ±551 pcm | ±1225 pcm |
| RR Δ235U | ±1.9% | ±1.8% | RR Δ238U | ±3.1% | ±1.1% |
| RR Δ239Pu | ±0.4% | ±0.7% | RR Δ241Pu | ±1.3% | ±1.2% |
| Δ234U | ±2.6% | ±2.0% | Δ235U | ±2.1% | ±1.9% |
| Δ236U | ±1.0% | ±0.7% | Δ238U | ±0.08% | ±0.08% |
| Δ238Pu | ±3.7% | ±3.9% | Δ239Pu | ±1.0% | ±1.8% |
| Δ240Pu | ±1.8% | ±2.5% | Δ241Pu | ±1.8% | ±1.3% |
| Δ242Pu | ±2.9% | ±1.6% | Δ241Am1 | ±9.7% | ±12% |
| Δ242mAm | ±23% | ±20% | Δ243Am | ±4.8% | ±6.4% |
| Δ242Cm | ±7.0% | ±8.1% | Δ243Cm | ±12% | ±14% |
| Δ244Cm | ±6.5% | ±5.2% | Δ90Sr | ±1.0% | ±0.9% |
| Δ134Cs | ±4.8% | ±5.3% | Δ137Cs | ±1.2% | ±0.9% |
| Δ148Nd | ±0.9% | ±1.0% | Δ154Eu | ±6.1% | ±3.1% |
Notes.(1)For 241Am, the uncertainties are strongly changing with cooling time, to reach 1.3% after 22 years.
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