racookpe1978, EnergyMix,
thank you very much for your help.
I have been given a sheet reporting an example of nuclide vector contained in a cask. But it's just an example.
There are the following nuclides: H-3, C-14, Mn-54, Fe-55, Co-60, Ni-63, Ag-110m, Sb-125, I-129, Cs-134, Cs-137, Pu-241...