EXAMPLE Dose Calculation for Chronic Surface Water Releases Using GENII V.2
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EXAMPLE Dose Calculation for Chronic Chronic Surface Water Releases Surface Water Releases Using GENII V.2 Using GENII V.2 FRAMES-2.0 Workshop U.S. Nuclear Regulatory Commission Bethesda, Maryland November 15-16, 2007 Pacific Northwest National Laboratory Richland, Washington
description
EXAMPLE Dose Calculation for Chronic Surface Water Releases Using GENII V.2. FRAMES-2.0 Workshop U.S. Nuclear Regulatory Commission Bethesda, Maryland November 15-16, 2007 Pacific Northwest National Laboratory Richland, Washington. Purpose. Demonstrate Common Dose Calculation - PowerPoint PPT Presentation
Transcript of EXAMPLE Dose Calculation for Chronic Surface Water Releases Using GENII V.2
EXAMPLE
Dose Calculation for Chronic Chronic Surface Water Releases Surface Water Releases
Using GENII V.2Using GENII V.2
EXAMPLE
Dose Calculation for Chronic Chronic Surface Water Releases Surface Water Releases
Using GENII V.2Using GENII V.2
FRAMES-2.0 WorkshopU.S. Nuclear Regulatory Commission
Bethesda, MarylandNovember 15-16, 2007
Pacific Northwest National LaboratoryRichland, Washington
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PurposePurposePurposePurpose
Demonstrate Common Dose Calculation Source term from AP-1000 Design Control Document
Annual-average release Long-term release and environmental accumulation (30 years)
Various options for surface water dispersion modeling
Individual Dose for 4 Age Groups Approximate population distribution from EIS
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Problem DescriptionProblem DescriptionProblem DescriptionProblem Description
Calculate the dose from radionuclides discharged into a river to a maximally exposed adult, teen, child and infant. The discharge flow rate is 10 cfm and the river flow is 1000 cfm. The exposure pathways include using the river water for drinking water, swimming, boating and shoreline sunbathing, fishing, and irrigation of crops and pastures. Use dose conversion factors from Federal Guidance-13. The source term is provided by the GALE code for a routine liquid pathway release.
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Source Term DefinitionSource Term DefinitionSource Term DefinitionSource Term Definition
Table 11.2-7 (Sheet 1 of 2) RELEASES TO DISCHARGE CANAL (Ci/Yr) CALCULATED BY GALE CODE
Turbine Nuclide Shim Bleed Misc. Wastes Building Total
Corrosion and Activation Products Na-24 0.00053 0.0 0.00008 0.00163 Cr-51 0.00068 0.0 0.0 0.00185 Mn-54 0.00048 0.0 0.0 0.00130 Fe-55 0.00037 0.0 0.0 0.00100 Fe-59 0.00008 0.0 0.0 0.00020 Co-58 0.00125 0.0 0.00001 0.00336 Co-60 0.00016 0.0 0.0 0.00044 Zn-65 0.00015 0.0 0.0 0.00041 W-187 0.00004 0.0 0.0 0.00013 Np-239 0.00008 0.0 0.0 0.00024
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ModulesModulesModulesModules
Source, Surface Water TransportGENII Radionuclide Database SelectionSource (User-defined source term) – WFF Surface Water ModuleGENII V.2 Surface Water Module
Exposure/Intake/RiskGENII V.2 Exposure Pathways ModuleGENII V.2 Receptor Intakes ModuleGENII V.2 Health Impacts Module Various dose viewers
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“Source-Term” Module Input
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Surface Water Dispersion Module Input
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Chronic Exposure Module Input
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Receptor Intake ModuleReceptor Intake ModuleReceptor Intake ModuleReceptor Intake Module
NRC age categories for dose conversion factors historically were defined in NUREG-0172 (Hoenes & Soldat 1977): Infant 0-1 year Child 1-11 years Teen 11-17 years Adult 17+ years
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Output ResultsOutput Results
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SummarySummarySummarySummary
GENII V.2 has many capabilities for evaluating releases of radionuclides into surface waters
Source terms may be input directly; future enhancements may include “GALE-like” features
Environmental models may require a lot of data
Doses can be calculated various ways (many types of individuals or a population group)
Future enhancements could replicate the various cooling pond models
