Preliminary PCT data on glass formulations developed for Hanford Site low-level wastes

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Description

Tank wastes stored at the Hanford Site are to be separated into high-level and low-level waste (LLW) fractions and vitrified for disposal. The high content of Na{sub 2}O in the LLW, averaging about 80 wt% on an oxide basis, necessitates the development of durable high-sodium glasses. Pacific Northwest Laboratory (PNL) is providing glass formulations for the LLW vitrification program. The most important considerations for acceptable LLW waste glass compositions are the following: (1) the capability to incorporate high sodium content from LLW; (2) satisfactory long-term durability; and (3) proper processability, such as desired viscosity at melting temperature. To develop durable ... continued below

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13 p.

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Feng, X.; Schweiger, M.J.; Hrma, P.R.; Palmer, S.E.; Smith, D.E.; Kim, D. et al. September 1, 1995.

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  • Pacific Northwest Laboratory
    Publisher Info: Pacific Northwest Lab., Richland, WA (United States)
    Place of Publication: Richland, Washington

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Description

Tank wastes stored at the Hanford Site are to be separated into high-level and low-level waste (LLW) fractions and vitrified for disposal. The high content of Na{sub 2}O in the LLW, averaging about 80 wt% on an oxide basis, necessitates the development of durable high-sodium glasses. Pacific Northwest Laboratory (PNL) is providing glass formulations for the LLW vitrification program. The most important considerations for acceptable LLW waste glass compositions are the following: (1) the capability to incorporate high sodium content from LLW; (2) satisfactory long-term durability; and (3) proper processability, such as desired viscosity at melting temperature. To develop durable high-sodium glasses in a reasonably short time and to supply data needed for modeling the glass`s long-term performance, several short-term test methods, such as 7-day PCT (Product Consistency Test), 28-day Materials Characterization Center MCC-1 test, single-pass flow through test, and vapor-hydration test have been used. A long-term static test (up to one year using PCT) is also being performed for selected glasses. This data report includes only the PCT data available at the time of the publication.

Physical Description

13 p.

Notes

INIS; OSTI as DE98050972

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  • Other Information: PBD: Sep 1995

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  • Other: DE98050972
  • Report No.: PNL--10827
  • Grant Number: AC06-76RL01830
  • DOI: 10.2172/555377 | External Link
  • Office of Scientific & Technical Information Report Number: 555377
  • Archival Resource Key: ark:/67531/metadc690585

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • September 1, 1995

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • June 14, 2016, 3:57 p.m.

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Feng, X.; Schweiger, M.J.; Hrma, P.R.; Palmer, S.E.; Smith, D.E.; Kim, D. et al. Preliminary PCT data on glass formulations developed for Hanford Site low-level wastes, report, September 1, 1995; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc690585/: accessed October 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.