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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.
Tieshan Wang, Zhiguo Wang, Jingen Chen, Genming Jin, Yubo Piao
Fusion Science and Technology | Volume 37 | Number 2 | March 2000 | Pages 146-150
Technical Paper | doi.org/10.13182/FST00-A130
Articles are hosted by Taylor and Francis Online.
Charged-particle products with ~3.9-MeV energy were observed in a low-energy experiment (Ep 330 keV) with a proton bombarding a Ti2Hx target. The features of the charged-particle products were the same as those of an alpha particle. The threshold of the reaction was ~150 keV. The maximum reaction rate reached more than 105 r/s, while the proton energy and current were 324 keV and 1.2 mA, respectively. The excitation curve of this unknown reaction increased exponentially with the growth of proton energy. There is no known nuclear reaction induced by a proton that can be applied to interpret this experimental phenomenon. Some interpretations, e.g., an indirect secondary reaction and a multibody reaction model, are discussed, but the origin of this unknown nuclear reaction is still a mystery and under study.
