The 0E2 benchmarks for PWR UO2 decay heat: an analysis from the NEA WPNCS

Open Access

This article has an erratum: [https://doi.org/10.1051/epjn/2026014]

Table 9.

Fractions to the total decay heat (DH1) at 5823 days, for both benchmarks (average and one standard deviation). Only ULC values are presented, as other analyses lead to similar values.

Pincell model
²³⁸Pu	²³⁹Pu	²⁴⁰Pu	²⁴¹Am	²⁴⁴Cm
0.116 ± 0.003	0.010 ± 0.000	0.016 ± 0.000	0.089 ± 0.001	0.106 ± 0.003

⁹⁰Sr	⁹⁰Y	¹³⁴Cs	¹³⁷Cs	^137mBa
0.050 ± 0.002	0.243 ± 0.002	0.009 ± 0.000	0.076 ± 0.002	0.259 ± 0.004

¹⁵⁴Eu	Sum	Sum actinides	Sum Fiss. Prod.
0.019 ± 0.001	0.993 ± 0.002	0.337 ± 0.002	0.656 ± 0.002	–

Assembly model

²³⁸Pu	²³⁹Pu	²⁴⁰Pu	²⁴¹Am	²⁴⁴Cm
0.106 ± 0.004	0.008 ± 0.000	0.015 ± 0.000	0.080 ± 0.001	0.100 ± 0.004

⁹⁰Sr	⁹⁰Y	¹³⁴Cs	¹³⁷Cs	^137mBa
0.052 ± 0.002	0.255 ± 0.002	0.008 ± 0.000	0.079 ± 0.002	0.268 ± 0.003

¹⁵⁴Eu	Sum	Sum actinides	Sum Fiss. Prod.
0.017 ± 0.000	0.989 ± 0.002	0.310 ± 0.002	0.679 ± 0.002	–

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