Radioactive decay data uncertainties library of isotopes for ABBN constant system

Results of studies aimed at the development of the library of uncertainties of radioactive decay data in the ABBN neutron data library format are presented. Different evaluations of uncertainties were compared and their effects on the results of calculations of residual heat release were determined using the test problem as the example.Matrices were generated in the ABBN format containing the data obtained on the basis of libraries in ENDF-6 format. 3821 isotopes from the ENDF/B-7 data library, 3852 isotopes from the JEFF-3.11 data library and 1264 isotopes from the JENDL-4.0 data library were processed.It was revealed that the differences in the evaluations accepted in different data libraries are comparatively not very significant, although they sometimes exceed the uncertainties assigned to the data in the ENDF/B-7 and LEFF-3.11 libraries (the latter are, as a rule, in agreement with each other).