Interim Report -- Committee on Cesium Processing Alternatives for High-Level Waste at the Savannah River Site (1999) / Chapter Skim
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Attachment C: Background on the High-Level Waste Program at Savannah River
Attachment C: Background on the High-Level Waste Program at Savannah River
Pages 14-20
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From page 14... ...
. The Savannah River Site is host to an extensive complex of facilities that includes fuel and target fabrication plants, nuclear reactors, chemical processing plants, underground storage tanks, and waste processing and immobilization facilities.
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- Security and Engineering Area C - Reactor Area D - Heavy Water Facility and Power House E- Burial Grounds F - Separations Area / F-Tank Fat.,, H - Separations Area / H-Tank Farrn K - Reactor Area L - Reactor Area ,~ - Materials Area N - Central Shops Area P - Reactor Area R- Reactor Area S - Defense Waste Processing Facility T- Large Scale Test Facility Z - Saltstone Area RR- RailRoad Yard SR Forest Station PAR Pond- Manmade cooling pond for P and R reactors L Lake- Manmade cooling pond for L reactors FIGURE C.~. Map showing location of the Savannah River Site
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From page 16... ...
1 1 Residual Salt Glass to Storage and Disposal FIGURE C.2. High Level Waste System at the Savannah River Site 1 SALT DISPOSAL (SALTSTONE)
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From page 17... ...
Some of these waste streams are recycled back to the tanks, other wastes are recycled within the various processing operations, and yet other wastes are treated and released to the environment. Most notably, the residual salt solutions (i.e., the solutions remaining after actinide and cesium removal)
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From page 18... ...
The removal of cesium from the salt solutions is potentially feasible through a number of processes, for example, precipitation reactions, ion exchange, or solvent extraction. In the ~ 980's, Savannah River developed a process for removing cesium from salt solutions through a precipitation reaction involving sodium teirapheny~borate (TPB)
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From page 19... ...
The team interacted with experts throughout the DOE complex and undertook a historical review and literature survey to identify about 140 processes that could potentially be used to separate cesium from the salt solutions. These processes were grouped into an "initial list" of 18 alternative processing options, which were subsequently screened using a multi-ahribute analysis to obtain a "short list" of four alternative processing options: (1 ~ small tank tetrapheny~borate (TPB)
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From page 20... ...
Direct grouting is very similar to the saltstone process that was to have been used to immobilize the residual salt solutions from ITP operations. After removal of the actinides and strontium with MST, the remaining liquid would be mixed with fly ash, slag, and Portland Cement and poured into concrete vaults on the site.
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