The TDB project aims to produce a database that:
contains data for all the elements of interest in radioactive waste disposal systems;
documents why and how the data were selected;
gives recommendations based on original experimental data, rather than compilations and estimates;
documents the sources of experimental data used;
is internally consistent; and
treats all solids and aqueous species of the elements of interest for nuclear waste storage performance assessment calculations.
The database compiles formation data (Gibbs energies, enthalpies, entropies and heat capacities) for each aqueous species and solid phase of interest, as well as chemical reactions and their corresponding thermodynamic data. Non thermodynamic data (diffusion or kinetics) and sorption data are not considered in the TDB project.