Density Calculations of Actinide Solutions using the Pitzer Method

Charles F. Weber, Jason Hite, Jennifer Alwin

Research output: Book/ReportCommissioned report

Abstract

This report summarizes an exhaustive literature search for density data of actinide solutions in support of the Nuclear Criticality Safety Program (NCSP). This work comprises an extension of work originally begun in 2003 that implemented an advanced density calculation scheme in the SCALE material input processor. This method demonstrated improved criticality calculations for aqueous systems of UO2(NO3)2 and Pu(NO3)4 in excess acid over a considerable range of concentrations and temperatures. It also provided for UO2F2 in acid at room temperature, although with higher uncertainty. The current study was intended to search all available sources for additional data on uranium and plutonium solutions, including the open literature, reports with limited distribution, and unpublished sources such as laboratory notebooks. Data for some of the systems has been regressed to obtain model parameters for the Pitzer formalism of modeling electrolyte solutions.
Original languageEnglish
Place of PublicationUnited States
DOIs
StatePublished - 2019

Keywords

  • 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
  • Nuclear Criticality Safety Program (NCSP)
  • Analytical Methods
  • Electrolyte Solutions

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