Goldsim Modeling of Vadose Zone Transport for E-Area Naval Reactor Component Disposal Areas: Model Description and Benchmarking

Smith, Frank

doi:10.2172/1643936

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…This is a direct result of the effect of the final cover on retarded phasic velocities during the first ~1,000 years. The fluxes to the water table results provided in Figure 12 (Case 3) and in Figure 13 (Case 1) were then calibrated to 1D GoldSim models using the final set of PORFLOW transport model runs and are described separately in Smith (2020).…”

Section: Model Resultsmentioning

confidence: 99%

PORFLOW Implementation of Vadose Zone Conceptual Model for Naval Reactor Component Disposal Area in the E-Area Low Level Waste Facility Performance Assessment

Hang

Hamm

2022

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PORFLOW models have been developed to implement the proposed conceptual models for the two Naval Reactor Component Disposal Areas (NRCDAs), 643-7E and 643-26E, for the purpose of evaluating dose impacts and producing disposal limits for the E-Area Low-Level Facility (LLWF). New NRCDA conceptual models were proposed by Wohlwend and Butcher (2019) for two areas within/adjacent to the E-Area LLWF used as storage/disposal sites for reactor components from the U.S. Navy since 1987. Naval Reactor (NR) waste is comprised of highly radioactive components consisting of activated corrosionresistant metal alloy contained within welded thick-walled steel casks, and auxiliary equipment primarily contaminated with lower levels of Activated Corrosion Products (ACPs) residing on the metal surfaces and contained within thinner-walled bolted containers.Separate three-dimensional models have been developed for each NR Pad to capture the unique geometry/features of the waste zone and subsurface hydrostratigraphic units, and chronology of facility events for each disposal unit. Radionuclide, chemical and material properties, as well as subsurface features represented in the models, were obtained from data packages containing key performance assessment (PA)

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Section: Model Resultsmentioning

confidence: 99%

PORFLOW Implementation of Vadose Zone Conceptual Model for Naval Reactor Component Disposal Area in the E-Area Low Level Waste Facility Performance Assessment

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Hamm

2022

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“…• Table 5-41 NR07E/Case 1 (generic waste, bolted container) The flux to the water table results provided in this section are calibrated to 1-D GoldSim ® models of the NRCDAs using the final set of PORFLOW transport model runs. This calibration is described separately by Smith (2020).…”

Section: Air Pathway and Radon Flux Analysesmentioning

confidence: 99%

Performance Assessment for the E-Area Low-Level Radioactive Waste Disposal Facility at the Savannah River Site: Chapter 5

MAYER

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ALEMAN

et al. 2023

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This chapter presents selected GW flow and radionuclide contaminant transport results from PORFLOW for the VZ and aquifer zone for each type of DU (STs, ETs, LAWV, ILV, and NRCDAs). Results for the nominal PA compliance case and various sensitivity cases are given. Results for the VZ include water saturation spatial profiles and radionuclide flux-to-the-watertable time profiles. Aquifer zone results include maximum concentration spatial contours; radionuclide concentration time profiles at the 100-meter POA; and peak concentrations at the 100-meter POA and time of occurrence for each modeled radionuclide. Dose history time profiles and preliminary disposal limits for the GW pathway are provided in Chapter 8. GoldSim ® model results for the air pathway and radon flux analyses for the four types of DUs are also presented and include peak doses (air) and fluxes (radon), peak times, and dose limits. Appendices supplement the limited results included in the chapter. Section 5.1 presents GW, air, and radon pathways results for STs and ETs. The GW pathway results include generic waste as well as simple and complex SWFs.  Section 5.2 provides GW, air, and radon pathways results for the LAWV.  Section 5.3 summarizes GW, air, and radon pathways results for the ILV. The GW pathway results are for generic waste and five SWFs.  Section 5.4 presents GW, air, and radon pathways results for the NRCDAs. GW pathway results include generic waste and SWFs.

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Goldsim Modeling of Vadose Zone Transport for E-Area Naval Reactor Component Disposal Areas: Model Description and Benchmarking

Cited by 2 publications

References 4 publications

PORFLOW Implementation of Vadose Zone Conceptual Model for Naval Reactor Component Disposal Area in the E-Area Low Level Waste Facility Performance Assessment

PORFLOW Implementation of Vadose Zone Conceptual Model for Naval Reactor Component Disposal Area in the E-Area Low Level Waste Facility Performance Assessment

Performance Assessment for the E-Area Low-Level Radioactive Waste Disposal Facility at the Savannah River Site: Chapter 5

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