Development of a frit 202 analytic standard for the Defense Waste Processing Facility

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Description

During the qualification of Frit 202 samples for the `DWPF Cold Runs`, the need for a reliable chemical frit standard became apparent. A standard was prepared by obtaining a quantity of Frit 202 and grinding into a fine powder. This material was homogenized as one slurry material volume, spray dried to prevent segregation, and hydraulically pressed into discs. These discs were fired and packaged into eleven sub-lots containing approximately 2,000 discs per sub-lot. A number of samples were obtained and analyzed by two analytic laboratories. The chemical analyses were carefully reviewed and evaluated by several statistical means. While there were ... continued below

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48 p.

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Schumacher, R.F.; Hardy, B.J. & Sproull, J.F. March 30, 1997.

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Description

During the qualification of Frit 202 samples for the `DWPF Cold Runs`, the need for a reliable chemical frit standard became apparent. A standard was prepared by obtaining a quantity of Frit 202 and grinding into a fine powder. This material was homogenized as one slurry material volume, spray dried to prevent segregation, and hydraulically pressed into discs. These discs were fired and packaged into eleven sub-lots containing approximately 2,000 discs per sub-lot. A number of samples were obtained and analyzed by two analytic laboratories. The chemical analyses were carefully reviewed and evaluated by several statistical means. While there were several statistically significant variations between the sub-lots, it is believed that those variations are partially caused by the variability of the analytic method. These discs should provide a reliable standard for future chemical analyses of DWPF Frits similar in comparison to Frit 202. It is recommended that these discs be used as a standard material included with the representative frit sample to the independent chemical analysis laboratory, and the order of use of these standards be from sub-lot eleven to sub-lot four. It is further recommended that the NIST standard material (93a) be employed along with the 202 standard until confidence in the new standard is gained. The NIST standard should also be used when initial use of a new sub-lot is begun. this procedure should continue to the end of the DWPF program or such time as the chemical composition of the frit is extensively modified.

Physical Description

48 p.

Notes

OSTI as DE97053826

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  • Other Information: PBD: 30 Mar 1997

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  • Other: DE97053826
  • Report No.: WSRC-TR--96-0414
  • Grant Number: AC09-89SR18035
  • DOI: 10.2172/565228 | External Link
  • Office of Scientific & Technical Information Report Number: 565228
  • Archival Resource Key: ark:/67531/metadc689936

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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.

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  • March 30, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Feb. 9, 2016, 4:55 p.m.

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Schumacher, R.F.; Hardy, B.J. & Sproull, J.F. Development of a frit 202 analytic standard for the Defense Waste Processing Facility, report, March 30, 1997; Aiken, South Carolina. (digital.library.unt.edu/ark:/67531/metadc689936/: accessed October 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.