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Glass strategy: Hanford’s enhanced waste glass program
The mission of the Department of Energy’s Office of River Protection (ORP) is to complete the safe cleanup of waste resulting from decades of nuclear weapons development. One of the most technologically challenging responsibilities is the safe disposition of approximately 56 million gallons of radioactive waste historically stored in 177 tanks at the Hanford Site in Washington state.
ORP has a clear incentive to reduce the overall mission duration and cost. One pathway is to develop and deploy innovative technical solutions that can advance baseline flow sheets toward higher efficiency operations while reducing identified risks without compromising safety. Vitrification is the baseline process that will convert both high-level and low-level radioactive waste at Hanford into a stable glass waste form for long-term storage and disposal.
Although vitrification is a mature technology, there are key areas where technology can further reduce operational risks, advance baseline processes to maximize waste throughput, and provide the underpinning to enhance operational flexibility; all steps in reducing mission duration and cost.
T. K. Sankaranarayanan, Mahadeva Srinivasan, Mukut Behari Bajpai, Devendra Swarup Gupta
Fusion Science and Technology | Volume 30 | Number 3 | December 1996 | Pages 349-354
Technical Paper | Nuclear Reaction in Solid | doi.org/10.13182/FST96-A30737
Articles are hosted by Taylor and Francis Online.
The generation of tritium during the electrolysis of aqueous light water alkali carbonate (K2CO3 and Li2CO3) solutions by nickel cathodes, first reported by us at the International Conference on Cold Fusion-3 (Nagoya, Japan, October 1992) has once again been verified and confirmed. During 1993, 10 out of 23 cells, whose electrolytes were analyzed using a newly set up dedicated liquid scintillation counting unit, indicated low tritium levels in the electrolyte, in the range of 0.5 to 4.8 Bq/ml. Except one cell, which contained 25% D2O, the remaining nine cells, which produced tritium, were charged with natural light water solutions only. Two of these cells, which were monitored for tritium every few days, and excluding cell OM-3, which was set up in 1992, indicated tritium level variations in a sawtooth fashion, suggesting the possible presence of an as yet unidentified mechanism responsible for periodically removing tritium from the electrolyte.
