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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.
Suddhasattwa Ghosh, Gurudas Pakhui, S. Suganthi, S. Nedumaran, M. Kakkum Perumal, Manish Chandra, P. Venkatesh, Bandi Prabhakara Reddy
Nuclear Technology | Volume 206 | Number 4 | April 2020 | Pages 587-608
Technical Paper | doi.org/10.1080/00295450.2019.1666602
Articles are hosted by Taylor and Francis Online.
This paper deals with the estimation of and of the PuPu redox couple in LiCl-KCl eutectic melt using statistical data fitting of experimental data. The value was also estimated in our laboratory at 723 and 773 K using logarithmic analysis of semi-integral voltammograms and chronopotentiograms. From semi-integral curves, was found to be −2.888 0.021 and −2.810 0.021 V at 723 and 773 K, respectively, whereas it was −2.851 0.020 V at 773 K from the analysis of chronopotentiograms. Based on subsequent statistical analysis, we recommend the following expressions for and applicable for the temperature range 673 to 823 K:andThe value in LiCl-KCl eutectic melt was estimated from calculated for the reactionusing FactSage package, and it was expressed as
