THE ROLE OF MODELING AND SIMULATION IN THE MPACT 2020 MILESTONE*

摘要

The Materials Protection, Accounting, and Control Technologies (MPACT) campaign has a significant milestone due at the end of 2020. The milestone will demonstrate advanced safeguards and security by design for a generic electrochemical reprocessing facility using the Virtual Facility Distributed Test Bed concept. The test bed ties together experimental and modeling capabilities across the laboratory complex to provide a one-stop-shop for advanced safeguards and security by design. Electrochemical facilities were chosen as the demonstration since commercial-scale plants do not exist yet, since there are a number of safeguards challenges, and due to alignment with other DOE programs. System-level models are used to determine the safeguards and security metrics to prove the effectiveness of the designs. The Separation and Safeguards Performance Model (SSPM) is used to determine the key safeguards metrics, and the PathTrace© and Scribe3D© software are used for the security analysis. Experimental data informs the key assumptions in the models and is based on wide variety of current and past research in the MPACT program. The baseline safeguards and security design will be presented along with the design approach. This work represents the contributions of Sandia National Laboratories (SNL) to the 2020 milestone-more complete material will be presented in a special issue of the Journal of Nuclear Materials Management in 2021.