Thermodynamic Properties of UO2, as Predicted by the New Equation of State

This chapter contains the description of the eventually recommended equation of state for uranium oxide, called here INTAS-99-EOS, as expressed in terms of models and sub-models presented in the previous Chapters. In the frame of the chemical model approach, this equation probably represents the most comprehensive EOS of UO2±x, affordable by optimal use of the presently available theoretical tools and experimental databases. The equation is of a MIX type, as sketched in Chapter 2; the details of its structure are explained and discussed in Chapters 3 to 6. After a recapitulation of the fundamental hypotheses and a summary of the main features, this Chapter is dedicated to the presentation of an extensive set of numerical calculations and to the comparison with predictions of alternative models.

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