Revised uranium--plutonium cycle PWR and BWR models for the ORIGEN computer code

Abstract

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Accident source terms for light-water nuclear power plants using high-burnup or MOX fuel.

“…The maximum assembly-average discharge burnup from the high burnup cycles was 45-48 GWd/t. ORIGEN [Croff et al, 1978] calculations of the fission product inventories extrapolated the actual level of discharge burnup from the high burnup core to the regulatory limit of 62 GWd/t for the highest exposure pin, which was reduced to 59 GWd/t on an assemblyaverage basis.…”

“…Decay heat and fission product inventories were calculated with the ORIGEN code [Croff, et al, 1978] assuming an assembly average discharge burnup of 59 GWd/t for high burnup operations and 28 GWd/t for low burnup operations.…”

Estimation of Spent Fuel Compositions from Light Water Reactors.

“…Here, the number of irradiation cycles ( N) and specific power are the same values as given in Ref. (7). Typical plant values of M 2 and B 2 are as follows:…”

Uncertainties in source term calculations generated by the ORIGEN2 computer code for Hanford Production Reactors

“…The 3.3 neutron spectrum is very sensitive to the type of reactor. Figures 3.1 and 3.2 show the neutron spectrum of a PWR fueled with slightly enriched uranium (Croff et al 1978), and a CANDU heavy water reactor (Croff and Bjerke 1980), respectively. There is a vast difference between the neutron spectra exhibited by these two types of reactors.…”