Support for HLW Direct Feed (Final Report)

Technical Report · Thu Jun 26 04:00:00 EDT 2014

DOI:https://doi.org/10.2172/2342151· OSTI ID:2342151

Matlack, Keith S. ^[1]; Kot, Wing K. ^[1]; Muller, Isabelle S. ^[1]; Pegg, Ian L. ^[1]; Joseph, Innocent ^[2]

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1. The Catholic Univ. of America, Washington, DC (United States)
2. EnergySolutions Federal EPC, Inc., Columbia, MD (United States)

This report describes work performed to develop and test new glass and feed formulations originating from a potential flow-sheet for the direct vitrification of High Level Waste (HLW) with minimal or no pretreatment. In the HLW direct feed option that is under consideration for early WTP operations, the pretreatment facility would be bypassed in order to support an earlier start-up of the vitrification facility. For HLW, this would mean that the ultrafiltration and caustic leaching operations that would otherwise have been performed in the pretreatment facility would either not be performed or would be replaced by an interim pretreatment function (in-tank leaching and settling, for example). These changes would likely affect glass formulations and waste loadings and have impacts on the downstream vitrification operations. The primary objective of this work was to develop and identify HLW glass compositions and glass forming additive blends for vitrification of a direct-feed HLW stream that has undergone various degrees of washing with no other pretreatment, while maintaining high waste loadings, high processing rates, and acceptable glass properties. This was accomplished through a combination of crucible-scale tests, vertical gradient furnace tests, and confirmation tests on the DM100 melter system. The tests were performed according to the Test Plan that was developed for this work.

• Research Organization: Hanford Site (HNF), Richland, WA (United States); USDOE Office of River Protection (ORP), Richland, WA (United States); The Catholic Univ. of America, Washington, DC (United States); EnergySolutions Federal EPC, Inc., Columbia, MD (United States)
• Sponsoring Organization: USDOE Office of Environmental Management (EM)
• DOE Contract Number: AC27-01RV14136
• OSTI ID: 2342151
• Report Number(s): ORP--60673-Rev.0; VSL-14R3090-1-Rev.0; VSL-14R3090-1, Rev. 0
• Country of Publication: United States
• Language: English

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