Uncertainties in Fission Product Decay-Heat Calculations

1 July 1977

journal article
research article
Published by Taylor & Francis in Nuclear Science and Engineering

Vol. 63 (3) , 276-291
https://doi.org/10.13182/NSE77-A27040

Abstract

Based on a sensitivity analysis of decay-heat summation calculations, uncertainties are obtained for the calculated decay heat associated with the thermal fission of ²³⁵U and the fast fission of ²³⁸U and ²³⁹Pu. For typical reactor irradiation times and cooling times >100 s, these uncertainties are 235U, 4% for ²³⁸U, and 5% for ²³⁹Pu. All calculations are based on ENDF/B-IV data.

Keywords

THERMAL
SUMMATION
REACTOR
FISSION
DECAY HEAT
ENDF/B
UNCERTAINTIES
CALCULATIONS BASED

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