1990•University of North Texas Digital Library (University of North Texas)Open access
Application of hydration thermodynamics to control of the DWPF process
Milivoj Plodinec
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Abstract
The Defense Waste Processing Facility (DWPF) at the Savannah River Site (SRS) will incorporate the radioactivity in the 130 million liters of high-level nuclear waste at SRS in a stable borosilicate glass. Glass product specifications requite control of processing parameters to ensure glass durability. A model of glass durability, based on hydration thermodynamics, has been used at SRS to aid in formulation of waste glasses; to explain the relative durability of different glasses under identical test conditions (MCC-1 test ); and to explain the effects of changing test conditions on the observed durability of a given glass. This model has now been modified for use in control of the DWPF. It provides a tool which relates glass durability to parameters which can be controlled in the DWPF process. It provides a tool which relates glass durability to parameters which can be controlled in the DWPF process, primarily chemical composition. In this paper, the model is presented, and its projected role in control of the DWPF process is described.