Review of models used for determining consequences of UF{sub 6} release: Development of model evaluation criteria. Volume 1

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Description

The objective of this study is to examine the usefulness and effectiveness of currently existing models that simulate the release of uranium hexafluoride from UF{sub 6}-handling facilities, subsequent reactions of UF{sub 6} with atmospheric moisture, and the dispersion of UF{sub 6} and reaction products in the atmosphere. The study evaluates screening-level and detailed public-domain models that were specifically developed for UF{sub 6} and models that were originally developed for the treatment of dense gases but are applicable to UF{sub 6} release, reaction, and dispersion. The model evaluation process is divided into three specific tasks: model-component evaluation; applicability evaluation; and user ... continued below

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50 p.

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Nair, S. K.; Chambers, D. B.; Park, S. H. & Hoffman, F. O. November 1, 1997.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 28 times . More information about this report can be viewed below.

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Description

The objective of this study is to examine the usefulness and effectiveness of currently existing models that simulate the release of uranium hexafluoride from UF{sub 6}-handling facilities, subsequent reactions of UF{sub 6} with atmospheric moisture, and the dispersion of UF{sub 6} and reaction products in the atmosphere. The study evaluates screening-level and detailed public-domain models that were specifically developed for UF{sub 6} and models that were originally developed for the treatment of dense gases but are applicable to UF{sub 6} release, reaction, and dispersion. The model evaluation process is divided into three specific tasks: model-component evaluation; applicability evaluation; and user interface and quality assurance and quality control (QA/QC) evaluation. Within the model-component evaluation process, a model`s treatment of source term, thermodynamics, and atmospheric dispersion are considered and model predictions are compared with actual observations. Within the applicability evaluation process, a model`s applicability to Integrated Safety Analysis, Emergency Response Planning, and Post-Accident Analysis, and to site-specific considerations are assessed. Finally, within the user interface and QA/QC evaluation process, a model`s user-friendliness, presence and clarity of documentation, ease of use, etc. are assessed, along with its handling of QA/QC. This document presents the complete methodology used in the evaluation process.

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50 p.

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INIS; OSTI as TI98003114

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  • Other Information: PBD: Nov 1997

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  • Other: TI98003114
  • Report No.: NUREG/CR--6481-Vol.1
  • DOI: 10.2172/569123 | External Link
  • Office of Scientific & Technical Information Report Number: 569123
  • Archival Resource Key: ark:/67531/metadc696681

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  • November 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • April 8, 2016, 12:55 p.m.

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Nair, S. K.; Chambers, D. B.; Park, S. H. & Hoffman, F. O. Review of models used for determining consequences of UF{sub 6} release: Development of model evaluation criteria. Volume 1, report, November 1, 1997; Washington D.C.. (digital.library.unt.edu/ark:/67531/metadc696681/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.