Melter technology evaluation for vitrification of Hanford Site low-level waste Page: 4 of 19
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MELTER TECHNOLOGY EVALUATION FOR VITRIFICATION
OF HANFORD SITE LOW-LEVEL WASTE
C. N. Wilson, K. C. Burgard, and E. T. Weber
Westinghouse Hanford Company
Richland, Washington 99352
N. R. Brown
U.S. Department of Energy, Richland Operations Office
Richland, Washington 99352
ABSTRACT
The current plan at the Hanford Site, in accordance with the
Tri-Party Agreement among Washington State, the U.S. Environmental
Protection Agency, and the U.S. Department of Energy, is to
convert the low-level tank waste fraction into a silicate glass.
The low-level waste will be composed primarily of sodium nitrate
and nitrite salts concentrated in a highly alkaline aqueous
solution. The capability to process up to 200 metric tons/day of
glass will be established to produce an estimated 210,000 m3 for
onsite disposal. A program to test and evaluate high-capacity
melter technologies is in progress. Testing performed by seven
different industrial sources using Joule heating, combustion,
plasma, and carbon arc melters is described.
1.0 INTRODUCTION
The U.S. Department of Energy (DOE) and Westinghouse Hanford
Company (WHC) plan to retrieve and vitrify approximately
230,000 m3 of radioactive defense wastes stored in 177 underground
tanks at the DOE Hanford Site in southeastern Washington State.
A plan and schedule for disposal of Hanford Site tank wastes were
agreed to in September 1993 by the DOE, the U.S. Environmental
Protection Agency (EPA), and the Washington State Department of
Ecology during renegotiation of the Hanford Federal Facility
Agreement and Consent Order,1 also known as the Tri-Party
Agreement. The Tri-Party Agreement milestones established for
low-level waste (LLW) vitrification activities are as follows.
1 MASTER
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Wilson, C. N.; Burgard, K. C.; Weber, E. T. & Brown, N. R. Melter technology evaluation for vitrification of Hanford Site low-level waste, article, April 1995; Richland, Washington. (https://digital.library.unt.edu/ark:/67531/metadc791512/m1/4/: accessed April 23, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.