Science and Technology of Nuclear Installations / 2013 / Article / Tab 5

Research Article

PSI Methodologies for Nuclear Data Uncertainty Propagation with CASMO-5M and MCNPX: Results for OECD/NEA UAM Benchmark Phase I

Table 5

Effect of changing the perturbation group structure for the PB-2 HZP cell case.

ParameterPerturbation group structure
19-group31-group44-group

Eigenvalue0.55%0.55%0.54%
U-235 abs.0.99%0.99%0.92%
U-235 fis.1.01%1.02%0.94%
U-238 abs.1.08%1.07%1.03%
U-238 fis.3.70%3.67%3.73%

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