Porflow Modeling Supporting the FY13 Saltstone Special Analysis

Technical Report · Wed May 01 04:00:00 EDT 2013

DOI:https://doi.org/10.2172/1148981· OSTI ID:1148981

Jordan, J. M. ^[1]; Flach, G. P. ^[1]

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1. Savannah River National Laboratory (SRNL), Aiken, SC (United States); Savannah River Site (SRS), Aiken, SC (United States)

PORFLOW modeling supporting the concurrent Saltstone FY13 Special Analysis (SA) is described in this report. The present simulations are based on the 2009 Performance Assessment and subsequent modeling to support a response to NRC Request for Additional Information PA-8. Notable changes to the baseline PA-8 model include revised degradation of cementitious materials and associated hydraulic properties, inclusion of floor joints and roof support columns in model representations, and a revised Tc-99 shrinking-core model to implement combined redox and solubility controls. Also presented are new and further justifications for key model assumptions, and verification test cases for selected model attributes. Results are presented for the nominal value simulation case, a flow sensitivity parametric study, and Tc-99 transport sensitivity cases. Further discussion of PORFLOW model setup and simulation results is presented in the Saltstone FY13 SA, including dose results.

• Research Organization: Savannah River National Laboratory (SRNL), Aiken, SC (United States); Savannah River Site (SRS), Aiken, SC (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC09-08SR22470
• OSTI ID: 1148981
• Report Number(s): SRNL--STI-2013-00280
• Country of Publication: United States
• Language: English

Related Subjects

Cementitious Materials
Fractures
Oxidation
Performance Assessment