Total System Model Version 6.0 Dose Estimating Routines Design and Bases

This manual discusses the routines to estimate radiological doses from normal operations used in
Version 6.0 of the Total System Model (TSM) as described in the TSM User Manual prepared
for the U.S. Department of Energy (DOE) by Bechtel SAIC Company (BSC) (BSC 2007a). The
TSM estimates doses during the simulation of the Civilian Radioactive Waste Management
System (CRWMS) mission. The TSM is not intended to provide a robust dose evaluation tool
and should only be used for relative comparisons of scenarios to general understand if doses are
increased or decreased as options are modeled. The TSM dose estimates should not be used as
a substitute for more robust analyses to support regulatory compliance although the results
may show similar trends.
This report also covers how the simulation results are evaluated and prepared or displayed in
studies or reports using the Dose Report Generator (DRG).
Some of the content such as the bases for the unit doses of this report is repeated from the dose
calculation and check for the so-called “Phase 1 TAD Study” (BSC 2005a) that evaluated the
impact of Transportation, Aging, and Disposal (TAD) canisters on the CRWMS. The dose
calculation and check (BSC 2005b) was used for TSM V4.0 but applies to TSM V6.0 because
the unit doses and the general methods for dose estimates have not been revised.
This manual assumes the reader has a basic knowledge of the TSM functionality and conventions
in the User Manual for the Total System Model Version 6.0 (BSC 2007a) and this manual must
be read in conjunction with the User Manual.
TSM uses the SimCAD™ process simulation software developed by Create-a-Soft™, Inc. (CaS).
More information on SimCAD™ conventions is in Reference CaS 2006.
This document was prepared in accordance with AP-ENG-006, Total System Model (TSM) –
Changes to Configuration Items and Base Case.