Defense Waste Processing Facility wasteform and canister description: Revision 2

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This document describes the reference wasteform and canister for the Defense Waste Processing Facility (DWPF). The principal changes include revised feed and glass product compositions, an estimate of glass product characteristics as a function of time after the start of vitrification, and additional data on glass leaching performance. The feed and glass product composition data are identical to that described in the DWPF Basic Data Report, Revision 90/91. The DWPF facility is located at the Savannah River Plant in Aiken, SC, and it is scheduled for construction completion during December 1989. The wasteform is borosilicate glass containing approximately 28 wt ... continued below

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Pages: 65

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Baxter, R.G. December 1, 1988.

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Description

This document describes the reference wasteform and canister for the Defense Waste Processing Facility (DWPF). The principal changes include revised feed and glass product compositions, an estimate of glass product characteristics as a function of time after the start of vitrification, and additional data on glass leaching performance. The feed and glass product composition data are identical to that described in the DWPF Basic Data Report, Revision 90/91. The DWPF facility is located at the Savannah River Plant in Aiken, SC, and it is scheduled for construction completion during December 1989. The wasteform is borosilicate glass containing approximately 28 wt % sludge oxides, with the balance consisting of glass-forming chemicals, primarily glass frit. Borosilicate glass was chosen because of its stability toward reaction with potential repository groundwaters, its relatively high ability to incorporate nuclides found in the sludge into the solid matrix, and its reasonably low melting temperature. The glass frit contains approximately 71% SiO/sub 2/, 12% B/sub 2/O/sub 3/, and 10% Na/sub 2/O. Tests to quantify the stability of DWPF waste glass have been performed under a wide variety of conditions, including simulations of potential repository environments. Based on these tests, DWPF waste glass should easily meet repository criteria. The canister is filled with about 3700 lb of glass which occupies 85% of the free canister volume. The filled canister will generate approximately 690 watts when filled with oxides from 5-year-old sludge and precipitate from 15-year-old supernate. The radionuclide activity of the canister is about 233,000 curies, with an estimated radiation level of 5600 rad/hour at the canister surface. 14 figs., 28 tabs.

Physical Description

Pages: 65

Notes

NTIS, PC A04/MF A01 - OSTI; 1.

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  • Other Information: Portions of this document are illegible in microfiche products

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  • Other: DE89011276
  • Report No.: DP-1606-Rev.2
  • Grant Number: AC09-76SR00001
  • DOI: 10.2172/6157117 | External Link
  • Office of Scientific & Technical Information Report Number: 6157117
  • Archival Resource Key: ark:/67531/metadc1114459

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  • December 1, 1988

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  • Feb. 22, 2018, 7:45 p.m.

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  • May 11, 2018, 10:43 a.m.

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Baxter, R.G. Defense Waste Processing Facility wasteform and canister description: Revision 2, report, December 1, 1988; Aiken, South Carolina. (digital.library.unt.edu/ark:/67531/metadc1114459/: accessed December 12, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.