Preliminary Control Strategy for Hanford Low-Activity Waste Glass Formulation

This paper describes the initial approach taken by the Hanford Waste Treatment and Immobilization Plant (WTP) to control the composition of low-activity waste (LAW) glass to be produced. The control strategy includes measuring waste composition, determining appropriate glass forming chemical masses, and propagating various process and composition uncertainties through mass balance equations and glass property-composition models. The various aspects of the control strategy are described along with the development status of the control system.