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Fusion Science and Technology
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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.
Hiromasa Takeno, Yasuyoshi Yasaka
Fusion Science and Technology | Volume 39 | Number 1 | January 2001 | Pages 386-389
Poster Presentations | doi.org/10.13182/FST01-A11963487
Articles are hosted by Taylor and Francis Online.
Particle discrimination and deceleration are studied with employing experimental devices which simulate direct energy converters used for D–3He reactor. A Cusp-DEC simulator with a slanted cusp field is constructed, and the preparative numerical simulation about it shows the better discrimination is expected for ions with a small pitch angle. Experimental results in a TWDEC simulator are presented. Due to the measurements of energy distribution, the effectiveness of spatially varied wavelength structure is demonstrated. The simple 1-D orbit calculation shows that the efficiency of the same extent as that of the 2-D numerical simulation would be achieved in the experimental device.
