Iron phosphate glass waste forms for vitrifying Hanford AZ102 Low Activity Waste (LAW), part II: Property-composition model

Two separate statistical models, based on Backward Elimination and Stepwise procedures, were developed and both models produced similar results. The DR-values calculated from both models were in good agreement with the experimentally measured values. The DR-composition models developed for the present iron phosphate glass waste forms (containing Hanford AZ102 LAW), are shown to be valid for predicting DR-values for similar waste forms containing other types of nuclear wastes as well. The chemical durability for a few selected glasses whose compositions were generated by the models was also measured by the Vapor Hydration Test (VHT). The model predicted DR-values qualitatively confirmed the measured VHT-values, which provides further support for validating the model.