Measurement of the volatility and glass transition temperatures of glasses produced during the DWPF startup test program

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Description

The Defense Waste Processing Facility (DWPF) will immobilize high-level radioactive waste currently stored in underground tanks at the Savannah River Site by incorporating the waste into a glass matrix. The molten waste glass will be poured into stainless steel canisters which will be welded shut to produce the final waste form. One specification requires that any volatiles produced as a result of accidentally heating the waste glass to the glass transition temperature be identified. Glass samples from five melter campaigns, run as part of the DWPF Startup Test Program, were analyzed to determine glass transition temperatures and to examine the ... continued below

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56 p.

Creation Information

Marra, J.C. & Harbour, J.R. October 18, 1995.

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Description

The Defense Waste Processing Facility (DWPF) will immobilize high-level radioactive waste currently stored in underground tanks at the Savannah River Site by incorporating the waste into a glass matrix. The molten waste glass will be poured into stainless steel canisters which will be welded shut to produce the final waste form. One specification requires that any volatiles produced as a result of accidentally heating the waste glass to the glass transition temperature be identified. Glass samples from five melter campaigns, run as part of the DWPF Startup Test Program, were analyzed to determine glass transition temperatures and to examine the volatilization (by weight loss). Glass transition temperatures (T{sub g}) for the glasses, determined by differential scanning calorimetry (DSC), ranged between 445 C and 474 C. Thermogravimetric analysis (TGA) scans showed that no overall weight loss occurred in any of the glass samples when heated to 500 C. Therefore, no volatility will occur in the final glass product when heated up to 500 C.

Physical Description

56 p.

Notes

INIS; OSTI as DE97009006

Source

  • Other Information: PBD: 18 Oct 1995

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  • Other: DE97009006
  • Report No.: WSRC-TR--95-0428
  • Grant Number: AC09-89SR18035
  • DOI: 10.2172/527436 | External Link
  • Office of Scientific & Technical Information Report Number: 527436
  • Archival Resource Key: ark:/67531/metadc694173

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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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  • October 18, 1995

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Feb. 9, 2016, 8:54 p.m.

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Marra, J.C. & Harbour, J.R. Measurement of the volatility and glass transition temperatures of glasses produced during the DWPF startup test program, report, October 18, 1995; Aiken, South Carolina. (digital.library.unt.edu/ark:/67531/metadc694173/: accessed October 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.