An Empirical Np Solubility Model Based on Spent Fuel Dissolution Experiments

摘要

In TSPA-VA, based on the concept that Np release isrncontrolled by secondary uranium minerals a mechanisticrnmodel of Np release from spent fuel dissolution has beenrndeveloped by the author using the reactive-transport codernAREST-CT. The AREST-CT model yields a lower Nprnsolubility, and which in turn generates a lower dose rate.rnBy examining spent fuel dissolution data, this paper furtherrnexplores the secondary uranium mineral concept and anrnempirical model is proposed. This model gives a veryrnsimilar Np solubility range as given by the AREST-CTrnmodel. As a matter of fact, this empirical model and thernAREST-CT model complement to each other.