Water sorption mechanisms for MIS materials.

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The fundamental processes that control the amount of water sorbed by impure plutonium-containing materials after calcination are reviewed. Of particular interest is the amount of and rate of moisture sorption at 1000 PPMv (parts-per-million vapor; -3% RH at 25 'C) and 10,000 PPMv (32% RH at 25 'C). Pure plutonium oxide powders will remain below the 0.5 wt% criterion for packaging in the DOE 3013 Standard at both water vapor concentrations [I]. Deliquescent salts that have been observed in calcined materials by DOES Materials Identification and Surveillance (MIS) program will exceed the 0.5 wt% criterion at 10,000 PPMv and will ... continued below

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9 p.

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Veirs, D. K. (Douglas Kirk); Mason, R. E. (Richard E.) & Erickson, R. M. (Randall M.) January 1, 2002.

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Description

The fundamental processes that control the amount of water sorbed by impure plutonium-containing materials after calcination are reviewed. Of particular interest is the amount of and rate of moisture sorption at 1000 PPMv (parts-per-million vapor; -3% RH at 25 'C) and 10,000 PPMv (32% RH at 25 'C). Pure plutonium oxide powders will remain below the 0.5 wt% criterion for packaging in the DOE 3013 Standard at both water vapor concentrations [I]. Deliquescent salts that have been observed in calcined materials by DOES Materials Identification and Surveillance (MIS) program will exceed the 0.5 wt% criterion at 10,000 PPMv and will meet that standard at 1,000 PPMv. Hydrated salts will exceed the 0.5 wt% criterion at all technologically achievable water vapor concentrations if allowed to reach equilibrium. Controlling the moisture availability by controlling the atmospheric content at 1000 PPM' and limiting the access to atmospheric moisture after stabilization through the use of a properly configured stabilization boat will minimize moisture uptake by these materials.

Physical Description

9 p.

Source

  • Submitted to: American Nuclear Society Fifth Topical Meeting for Spent Nuclear Fuel and Fissile Materials Management, Sept. 17-20, 2002, Charleston, SC

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  • Report No.: LA-UR-02-5103
  • Grant Number: none
  • Office of Scientific & Technical Information Report Number: 976288
  • Archival Resource Key: ark:/67531/metadc926125

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • January 1, 2002

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 12, 2016, 5:24 p.m.

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Veirs, D. K. (Douglas Kirk); Mason, R. E. (Richard E.) & Erickson, R. M. (Randall M.). Water sorption mechanisms for MIS materials., article, January 1, 2002; United States. (digital.library.unt.edu/ark:/67531/metadc926125/: accessed November 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.