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Fusion Science and Technology
Latest News
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.
Denis Jurkin, Günther Müllen, Jörg Aign
Fusion Science and Technology | Volume 60 | Number 4 | November 2011 | Pages 1403-1406
Detritiation and Isotope Separation | Proceedings of the Ninth International Conference on Tritium Science and Technology (Part 2) | doi.org/10.13182/FST11-A12693
Articles are hosted by Taylor and Francis Online.
Tritium separation factors are extraordinarily important parameters in the development of efficient electrolysis systems for HTO waste volume reduction and tritium recovery purposes as well as for the reproducible analysis of tritium in low-level environmental samples. In the present work, a modular, actively cooled, continuous feed electrolysis setup has been developed. In order to provide a basis for the analysis of electrode specific tritium separation factors and to investigate the system performance, electrolysis of tritiated water was conducted with constant current density in strongly alkaline medium (1 M sodium hydroxide) using platinum as reference electrode material. Furthermore, the energy saving potential of an increase of the number of cell compartments was investigated.
