Total System Model Version 6.0 Preprocessor Smoothing Algorithm Validation Report

This validation report supports the issuance of Version 6.0 of the Total System Model (TSM BSC-2007a) that is described in the TSM User’s Manual (UM) (BSC-2007b) and the TSM Preprocessor (TSMPP) UM (BSC 2007c). This report assumes the reader has detailed working knowledge of the TSM functions and Civilian Radioactive Waste Management System (CRWMS) operations.
This validation was performed in accordance with AP-ENG-006, Total System Model (TSM)- Changes to Configuration Items and Base Case.
Most Department of Energy (DOE) waste streams use codisposal waste packages (WP). The three types of DOE waste streams that use codisposal WPs are the high-level radioactive waste (HLW), U. S. Department of Energy spent nuclear fuel (DOE SNF) and multi-canister over-packs (MCO). The timing of these waste streams can adversely impact the production efficiency of the Geologic Repository Operations Area (GROA) if DOE SNF cask loads are not delivered and maintained in the proper ratios to make codisposal WPs.
This issue has been addressed within the TSMPP via a “smoothing algorithm” designed to adjust the shipment timing of the codisposal waste streams. Two shipping strategies have been developed and are evaluated in this document. The first strategy has the DOE SNF waste streams shipping on schedule with the shipping times of the HLW waste streams adjusted to “follow” to ensure proper codisposal inventory ratios. This strategy is called “SNF Lead”. The second strategy has the HLW waste streams ship on schedule with the shipping times of the DOE SNF waste streams adjusted to “follow” to ensure proper codisposal inventory ratios. This strategy is called “HLW Lead”.
This objective of this report is to show that the smoothing algorithm behaves as designed.