Computation of Actinide Pourbaix Diagrams at 298K and 550K (U,Np,Pu,Am,Cm - H2O)
32nd Annual CNS Conference - 2011 June 05-08


Presented at:
32nd Annual CNS Conference
2011 June 05-08
Location:
Niagara Falls, Canada
Session Title:
Additional Paper from 11th International Conference on CANDU Fuel

Authors:
P. Foster (AECL)
J. Harber (AECL)
S. Tikku (AECL)
A. Xing ,   

Abstract

Pourbaix diagrams for the actinides ranging from uranium to curium have been developed from the enthalpy of formation, entropy and heat capacity (or estimates thereof) for the phases and aqueous species. Emphasis has been given to the region between hydrogen and oxygen gas saturation.Additional thermodynamic computations illustrate how the data may be employed in better understanding the chemical behaviour of fuel debris circulating in CANDU reactor coolant.

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