22
APPENDIX 2
DETAILS OF THE CALCULATION
The purpose of these calculations is to relate the surface
concentration (uC i/m?) of every radionuclide significant to the
external gamma-ray exposure levels (mR/hr) as a function of time and
fractionation behavior.
A.
Fission Products
A total of 152 fission products and 25 neutron-induced nuclides
were included in the computerized calculations described stepwise below.
Unfractionated fission product distribution
FY(A)
where FY(A)
"
1.
> FV(A),
j
° a.
2
fission yield of mass chain A for a given event,
FY(A); = fission yield of mass chain A from
2334 2354 238y or Pu by fission spectrum
or 14 MeV neutrons (Ne73) (table in computer
program),
a.
= fraction of total fissions due to a given
fission type (input data).