Using ASCEM Modeling and Visualization to Inform Stakeholders of Contaminant Plume Evolution and Remediation Efficacy at F-Basin Savannah River, SC – 15156

Conference · Wed Jan 28 00:00:00 EST 2015

OSTI ID:1174133

Flach, G. ^[1]; Wainwright, H. ^[1]; Molins, S. ^[1]; Davis, J. ^[1]; Arora, B. ^[1]; Faybishenko, B. ^[1]; Krishnan, H. ^[1]; Hubbard, S. ^[1]; Flach, G. ^[2]; Denham, M. ^[2]; Eddy-Dilek, C. ^[2]; Moulton, D. ^[3]; Lipnikov, K. ^[3]; Gable, C. ^[3]; Miller, T. ^[3]; Freshley, M. ^[4]

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1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
2. Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)
3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
4. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

Communication with stakeholders, regulatory agencies, and the public is an essential part of implementing different remediation and monitoring activities, and developing site closure strategies at contaminated sites. Modeling of contaminant plume evolution plays a critical role in estimating the benefit, cost, and risk of particular options. At the same time, effective visualization of monitoring data and modeling results are particularly important for conveying the significance of the results and observations. In this paper, we present the results of the Advanced Simulation Capability for Environmental Management (ASCEM) project, including the discussion of the capabilities of newly developed ASCEM software package, along with its application to the F-Area Seepage Basins located in the U.S. Department of Energy Savannah River Site (SRS). ASCEM software includes state-of-the-art numerical methods for simulating complex flow and reactive transport, as well as various toolsets such as a graphical user interface (GUI), visualization, data management, uncertainty quantification, and parameter estimation. Using this software, we have developed an advanced visualization of tritium plume migration coupled with a data management system, and simulated a three-dimensional model of flow and plume evolution on a high-performance computing platform. We evaluated the effect of engineered flow barriers on a nonreactive tritium plume, through advanced plume visualization and modeling of tritium plume migration. In addition, we developed a geochemical reaction network to describe complex geochemical processes at the site, and evaluated the impact of coupled hydrological and geochemical heterogeneity. These results are expected to support SRS’s monitoring activities and operational decisions.

• Research Organization: Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC09-08SR22470
• OSTI ID: 1174133
• Report Number(s): SRNL-STI-2015-00027; TRN: US1600113
• Resource Relation: Conference: Waste Management 2015 (WM2015), Phoeniz, AZ (United States), 15-19 Mar 2015
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
97 MATHEMATICS AND COMPUTING
TRITIUM
SAVANNAH RIVER PLANT
PLUMES
COMPUTERIZED SIMULATION
GEOCHEMISTRY
DATA VISUALIZATION
EVOLUTION
MONITORING
RADIONUCLIDE MIGRATION
THREE-DIMENSIONAL CALCULATIONS
PERFORMANCE
A CODES
ENGINEERED SAFETY SYSTEMS