ANALYSIS OF RELEASE OF RADIOACTIVE FISSION PRODUCTS FROM NUCLEAR FUELS
We present here a summary of work in progress aimed at the development of a mechanistically based analysis code for use in design and accident analysis of fuel elements. The principal simplifying assumptions are the use of reaction rate theory (the various sinks for isotopes are treated in an averaged manner) and of a single average size bubble for each category. Exhaustive nuclear data libraries and codes have been linked to the developed release program to provide reliable fission yield predictions for the various types of reactors and irradiation conditions. The model includes the formation of each isotope, from fission and from carefully selected decay chains as well as its possible subsequent decays. Atomic migration and finite equilibrium solubilities are allowed and bubble migration concepts are included. We present here the fundamental hypotheses and models assumed, as well as the highlights of the mathematical solutions of principal problems. Our purpose is mainly to provide material for discussion of work which is still in progress.
Bibliographic Reference: EUROPEAN APPLIED RESEARCH REPORTS - NUCLEAR SCIENCE AND TECHNOLOGY SECTION, VOL. 6 (1985), NO. 4, PP. 817-867, (EUR 9502 EN).
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Record Number: 1989124009600 / Last updated on: 1987-01-01
Available languages: en