Parameters used in the environmental pathways (DESCARTES) and radiological dose (CIDER) modules of the Hanford Environmental Dose Reconstruction Integrated Codes (HEDRIC) for the air pathway

Snyder, Stephen; Farris, W.T.; Napier, Bruce A.; Ikenberry, T.A.; Gilbert, R.O.

doi:10.2172/7005751

Cited by 2 publications

(13 citation statements)

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Supporting

Mentioning

Contrasting

Order By: Relevance

“…The order of presentation matches the order in which the hierarchical sensitivity analysis method in Section 5 is applied (that is, beginning with dose and working backwards through the model to determine the relative uncertainty that is induced by each model component). Detailed information of the computational models is provided in Heeb (1993), Ramsdell and Burk (1992), Snyder et al (1992), Eslinger (1992), Eslinger et al (1992), and Miley et al (1992). The reader is encouraged to consult these documents for a more complete discussion of the HEDR models.…”

Section: Hanford Environmental Dose Reconstruction Conceptual and Commentioning

confidence: 99%

“…Because of the relationship between parameter uncertainties and dose uncertainties, the methods used to specify parameter PDFs must be well understood and documented. Snyder et al (1992) document the PDFs that are proposed for parameters in the environmental accumulation and dose portions of the HEDRIC code. The strategy used by Snyder et al (1992) to specify the PDFs is detailed in following paragraphs.…”

Section: 7mentioning

confidence: 99%

“…Snyder et al (1992) document the PDFs that are proposed for parameters in the environmental accumulation and dose portions of the HEDRIC code. The strategy used by Snyder et al (1992) to specify the PDFs is detailed in following paragraphs.…”

Section: 7mentioning

confidence: 99%

“…The relative likelihoods of the alternative values for DoseFactoringestion, lntakemilk, and Holdup are expressed as the following PDFs. The PDFs for DoseFactoringes,on and Holdup are from Snyder et al (1992), and the PDF for Intakemak is assumed arbitrarily for the purposes of this example. See Appendix B for details about these PDFs.…”

Section: Estimation Of Uncertainty Using Monte Carlo Techniquementioning

confidence: 99%

“…The values of most parameters in these models are not well-known (Snyder et al 1992) An important objective of the HEDR Project is to estimate the uncertainty of computed doses that arises from uncertainty about parameter values. Section 1.1 presents an overview of the uncertainty and sensitivity analysis process being used by the HEDR Project.…”

Section: Introductionmentioning

confidence: 99%

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Uncertainty and Sensitivity Analyses Plan. Draft for Peer Review: Hanford Environmental Dose Reconstruction Project

Simpson¹,

Ramsdell²

1993

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LEGAL NOTICE This report was prepared by Battelle as an account of sponsored research activities. Neither Sponsor nor Battelle nor any person acting.on behalf of eithen MAKES ANY WARRANTY OR REPRESENTATION, EXPRESSOR IMPLIED, with respect to the accuracy, completeness, or usefulnessof the information contained in this report, or th:,t the use of any information, apparatus, process, or composition disclosed in this report may not infringe privately owned rights; or Assumes any liabilities with respect to the use'of, or damages resulting from the use of, any information, apparatus,process, or composition disclosed in this report.

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Section: Hanford Environmental Dose Reconstruction Conceptual and Commentioning

confidence: 99%

Section: 7mentioning

confidence: 99%

Section: 7mentioning

confidence: 99%

Section: Estimation Of Uncertainty Using Monte Carlo Techniquementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Uncertainty and Sensitivity Analyses Plan. Draft for Peer Review: Hanford Environmental Dose Reconstruction Project

Simpson¹,

Ramsdell²

1993

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HEDR model validation plan. Hanford Environmental Dose Reconstruction Project

Napier¹,

Gilbert²,

Simpson³

et al. 1993

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The Hanford Environmental Dose Reconstruction (HEDR) Project has developed a set of computational "tools" for estimating the possible radiation dose that individuals may have received from past Hanford Site operations. This document describes the planned activities to "validate" these tools. ,In the sense of the HEDR Project, "validation" is a process carried out by comparing computational model predictions with field observations and experimental measurements that are independent of those used to develop the model. ScopeA high level of coverage of the various space/time/pathway combinationsused in the primary dose calculations would lead to the most rigorously defensible validation. Data are not available to support such an ambitiousvalidation program. Contemporaneousdata do not addressali the necessary pathways, over space or over time, needed to provide a complete validation. The data sets that have been selected for validation were chosen to providethe best examples of coverage of the domain in time, in space, and for as many pathways as possible. ApproachThe general philosophy of this plan is to comparethe calculated values of dose, or of the surrogatemeasurementclosest to dose available(e.g., concentrationsof radioiodine in sagebrush), with the measurements. The purpose is primarily to characterize the comparisonswith respect to the spatial, temporal, or pathway elements of the availabledata. The approachis to provide descriptive statistics, rather than formal "hypothesis testing" statistics. ResultsThis report discusses the data sets available to address the general validation goals. Fourteen specific procedures are provided to be used to prepare the existing data sets, estimate environmental contamination levels or doses, and compare the observed and predicted data. Comparison of the HEDR models is described through benchmarking with other international models in the International Atomic Energy Agency's Coordinated Research Program on Validation of Radionuclide Transport Models for Terrestrial, Urban, and Aquatic Environment. A generic description of deliverables of b each individual validation exercise is provided. Future uses of the validation results are addressed. Projected schedule and costs of performing these analyses are provided.

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Parameters used in the environmental pathways (DESCARTES) and radiological dose (CIDER) modules of the Hanford Environmental Dose Reconstruction Integrated Codes (HEDRIC) for the air pathway

Cited by 2 publications

References 0 publications

Uncertainty and Sensitivity Analyses Plan. Draft for Peer Review: Hanford Environmental Dose Reconstruction Project

Uncertainty and Sensitivity Analyses Plan. Draft for Peer Review: Hanford Environmental Dose Reconstruction Project

HEDR model validation plan. Hanford Environmental Dose Reconstruction Project

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