GoldSim® Aquifer Model Calibration and Plume Interaction

Wohlwend, Jennifer; Flach, G. P.

doi:10.2172/1434649

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…The Aquifer Model and associated optimized geometric parameters will be implemented in the future GoldSim ® system model that will simulate subsurface flow and radionuclide transport from the ground surface to the 100-meter POA. (Wohlwend & Flach 2018) The resulting model is referred to as "GSA_2018" (Wohlwend 2018, Flach 2019) (FY2018 SRS CA Annual Review (Kubilius et al 2019b) Section 3.6.4).…”

Section: B4 Revised Input Data From That Utilized Within the 2010 Srs Camentioning

confidence: 99%

FY2021 Savannah River Site Composite Analysis Annual Summary Review

Stagich¹

2022

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This document provides the Department of Energy (DOE) Order 435.1 and its manual, Radioactive Waste Management (DOE 2021a(DOE , 2021b required Annual Review for the Savannah River Site (SRS) Composite Analysis (CA).Progress made to-date toward addressing the secondary issue from the LFRG review of the 2010 SRS CA has focused primarily upon inventory estimate improvements. Inventory impacts dose in a linear fashion and reduces the uncertainty with the CA conclusions. Maintenance items are addressed, as funding allows, based on the relative risk associated with meeting the performance objectives. Currently, there is minimal risk in exceeding the DOE 100 mrem/yr CA primary dose limit or the DOE 30 mrem/yr dose constraint (administrative limit).Proposed activities, discoveries, new information and changes potentially affecting the 2010 SRS CA are documented in this and earlier Annual Summary Reviews, and a consolidated list of changes since the 2010 CA is documented in this report. The impact to the CA of changes arising from updated performance assessment (PA) baselines [i.e., Saltstone Disposal Facility (SDF), E-Area Low-Level Waste Facility (ELLWF), and F & H Tank Farm (FTF & HTF) closures] is expected to be minor for the following reasons: The primary contributors to the SRS CA dose impact at the Upper Three Runs (UTR) point of assessment (POA) are the H-Canyon and Mixed Waste Management Facility (MWMF), contributing 68% and 9%, respectively, to the dose impact at that POA. The combined contribution to the UTR dose impact from all PA's (SDF, ELLWF, FTF and HTF) is ~2% of this total.The 2010 SRS CA model validation performed indicates that the CA projected dose, while generally conservative, provides a reasonable representation of the maximum annual doses. Doses evaluated are well below the SRS established 15 mrem/yr administrative limit (Crapse et al. 2011).Based on the assessment presented within this annual review and collective engineering judgement, the conclusions of the 2010 SRS CA remain valid and there is reasonable assurance that SRS will meet the performance objectives delineated in DOE Manual 435.1-1. The 2010 SRS CA should be updated to incorporate PA changes, proposed changes to inventories and sources and model improvements accumulated since the 2010 CA. The timing will be dependent on the approval of the ELLWF PA revision.

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Section: B4 Revised Input Data From That Utilized Within the 2010 Srs Camentioning

confidence: 99%

FY2021 Savannah River Site Composite Analysis Annual Summary Review

Stagich¹

2022

View full text Add to dashboard Cite

show abstract

“…The Aquifer Model and associated optimized geometric parameters will be implemented in the future GoldSim ® system model that will simulate subsurface flow and radionuclide transport from the ground surface to the 100-meter POA. (Wohlwend & Flach 2018) (FY2018 SRS CA Annual Review (Kubilius et al 2019b) Section 3.6.3).…”

Section: B5 Other Updated Considerations Since the 2010 Srs Camentioning

confidence: 99%

Savannah River Site Composite Analysis (FY2019 Annual Review)

Stagich

Butcher

2020

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This document provides the Department of Energy (DOE) Order 435.1, Radioactive Waste Management (DOE 1999c) required Annual Review for the Savannah River Site (SRS) Composite Analysis (CA). Progress made to-date toward addressing the secondary issue from the LFRG review of the 2010 SRS CA has focused primarily upon inventory estimate improvements. Inventory impacts dose in a linear fashion and reduces the uncertainty with the CA conclusions. Maintenance items are addressed, as funding allows, based on the relative risk associated with meeting the performance objectives. Currently, there is minimal risk in exceeding the DOE 100 mrem/yr CA primary dose limit or the DOE 30 mrem/yr dose constraint (administrative limit). Proposed activities, discoveries, new information and changes potentially affecting the 2010 SRS CA are documented in this and earlier Annual Summary reports, and a consolidated list of changes since the 2010 CA is documented in this report. The impact to the CA of changes arising from these new PA baselines is expected to be minor for the following reasons: The primary contributors to the SRS CA dose impact at the UTR POA are the H-Canyon and Mixed Waste Management Facility (MWMF), contributing 68% and 9%, respectively, to the dose impact at that POA. The combined contribution to the UTR dose impact from all PA's (SDF, E-Area LLWF, FTF and HTF) is ~2% of this total. The 2010 SRS CA model validation performed indicates that the CA projected dose, while generally conservative, provides a reasonable representation of the maximum annual doses. Doses evaluated are well below the SRS established 15 mrem/yr administrative limit (Crapse et al. 2011). Based on the assessment presented within this annual review and collective engineering judgement, the conclusions of the 2010 SRS CA remain valid and there is reasonable assurance that SRS will meet the performance objectives delineated in DOE Order 435.1. The 2010 SRS CA should be updated to incorporate PA changes, proposed changes to inventories and sources and model improvements accumulated since the 2010 CA. The timing will be dependent on the completed of PA revisions.

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GoldSim® Aquifer Model Calibration and Plume Interaction

Cited by 2 publications

References 4 publications

FY2021 Savannah River Site Composite Analysis Annual Summary Review

FY2021 Savannah River Site Composite Analysis Annual Summary Review

Savannah River Site Composite Analysis (FY2019 Annual Review)

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