FIREPLUME model for plume dispersion from fires: Application to uranium hexafluoride cylinder fires

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This report provides basic documentation of the FIREPLUME model and discusses its application to the prediction of health impacts resulting from releases of uranium hexafluoride (UF{sub 6}) in fires. The model application outlined in this report was conducted for the Draft Programmatic Environmental Impact Statement for Alternative Strategies for the Long-Term Management and Use of Depleted UF{sub 6}. The FIREPLUME model is an advanced stochastic model for atmospheric plume dispersion that predicts the downwind consequences of a release of toxic materials from an explosion or a fire. The model is based on the nonbuoyant atmospheric dispersion model MCLDM (Monte Carlo ... continued below

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97 p.

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Brown, D. F.; Dunn, W. E.; Policastro, A. J. & Maloney, D. June 1997.

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Description

This report provides basic documentation of the FIREPLUME model and discusses its application to the prediction of health impacts resulting from releases of uranium hexafluoride (UF{sub 6}) in fires. The model application outlined in this report was conducted for the Draft Programmatic Environmental Impact Statement for Alternative Strategies for the Long-Term Management and Use of Depleted UF{sub 6}. The FIREPLUME model is an advanced stochastic model for atmospheric plume dispersion that predicts the downwind consequences of a release of toxic materials from an explosion or a fire. The model is based on the nonbuoyant atmospheric dispersion model MCLDM (Monte Carlo Lagrangian Dispersion Model), which has been shown to be consistent with available laboratory and field data. The inclusion of buoyancy and the addition of a postprocessor to evaluate time-varying concentrations lead to the current model. The FIREPLUME model, as applied to fire-related UF{sub 6} cylinder releases, accounts for three phases of release and dispersion. The first phase of release involves the hydraulic rupture of the cylinder due to heating of the UF{sub 6} in the fire. The second phase involves the emission of material into the burning fire, and the third phase involves the emission of material after the fire has died during the cool-down period. The model predicts the downwind concentration of the material as a function of time at any point downwind at or above the ground. All together, five fire-related release scenarios are examined in this report. For each scenario, downwind concentrations of the UF{sub 6} reaction products, uranyl fluoride and hydrogen fluoride, are provided for two meteorological conditions: (1) D stability with a 4-m/s wind speed, and (2) F stability with a 1-m/s wind speed.

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97 p.

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INIS; OSTI as DE97008128

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  • Other Information: PBD: Jun 1997

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  • Other: DE97008128
  • Report No.: ANL/EAD/TM--69
  • Grant Number: W-31109-ENG-38
  • DOI: 10.2172/510554 | External Link
  • Office of Scientific & Technical Information Report Number: 510554
  • Archival Resource Key: ark:/67531/metadc691919

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  • June 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • May 16, 2016, 3:53 p.m.

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Brown, D. F.; Dunn, W. E.; Policastro, A. J. & Maloney, D. FIREPLUME model for plume dispersion from fires: Application to uranium hexafluoride cylinder fires, report, June 1997; Illinois. (digital.library.unt.edu/ark:/67531/metadc691919/: accessed November 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.