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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.
D.A. Petti, D. L. Hagrman
Fusion Science and Technology | Volume 30 | Number 3 | December 1996 | Pages 1533-1539
Safety and Environment | doi.org/10.13182/FST96-A11963168
Articles are hosted by Taylor and Francis Online.
A simple “first principles” model has been developed to establish the level of activation product transport through ITER confinement barriers in both wet (steam) and dry (air) accident scenarios. The model accounts for steam condensation (wet scenarios only), aerosol agglomeration, gravitational settling, and leakage. Parametric studies have been performed for a range of aerosol particle sizes and mass densities expected by activation product mobilization. Recommended aerosol confinement release fractions for both wet and dry scenarios have been developed.