Application of the Pitzer Method for Modeling Densities of Actinide Solutions in the SCALE Code System

Charles F. Weber; Calvin M. Hopper

doi:dx.doi.org/10.13182/NT06-A3684

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Home / Publications / Journals / Nuclear Technology / Volume 153 / Number 1

Application of the Pitzer Method for Modeling Densities of Actinide Solutions in the SCALE Code System

Charles F. Weber, Calvin M. Hopper

Nuclear Technology / Volume 153 / Number 1 / January 2006 / Pages 1-8

Technical Paper / Reactor Safety / dx.doi.org/10.13182/NT06-A3684

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A new approach to modeling fissile solution densities is developed and applied to arbitrary solutions of UO₂²⁺, Th⁴⁺, Pu⁴⁺, H⁺, and NO₃^- in water. The model is based on the semiempirical method of Pitzer for describing electrolyte solution thermodynamics. This new density model has been included in the recent release of the SCALE 5 code system as the default for criticality calculations of fissile solutions.