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An External Technical Review (ETR) team evaluated the system-level modeling and simulation tools in support of Savannah River Site and Office of River Protection liquid waste processing and disposal systems. The reviews focused on the following primary areas: software and modeling tools, capability to model needed facilities and operations, rate at which predictions are performed, and need for additional tools. The Liquid Waste Disposition Systems at these sites are highly integrated operations that involve safely storing liquid waste in underground storage tanks; removing, treating, and disposing low-activity fraction on-site; vitrifying high-level waste; and storing the vitrified waste until permanent disposition at a Federal Repository. The purpose of the ETR team was to evaluate the current process simulation tools that support the planning basis for life cycle liquid waste disposition system plans. These plans establish a base for processing the constituents of liquid waste systems to the end of the program mission. Observations and recommendations were made for each of the review areas. In general, tools appear to provide reasonable estimates for their intended purposes; however, additional functionality and new tools are needed, as well as greater flexibility and improved performance in producing estimates for planning purposes. |
