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Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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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.
Deqiong Zhu, Takuji Oda, Satoru Tanaka
Fusion Science and Technology | Volume 60 | Number 3 | October 2011 | Pages 1147-1150
Blanket and Breeder Materials | Proceedings of the Ninth International Conference on Tritium Science and Technology | doi.org/10.13182/FST11-A12618
Articles are hosted by Taylor and Francis Online.
Understanding the tritium behavior in breeder materials is essential for the safe and economic operation of fusion reactor. In this paper, the effect of grain size on bulk diffusion of hydrogen isotope in ternary lithium oxide was studied. LiNbO3 single-crystal samples of different grain sizes were used: cubic samples (a) 4.7×4.7×4.7 mm3, (b) 1.5×1.5×1.5 mm3, and (c) 0.46×0.46×0.46 mm3; powder sample (d) 45 m (a.v). With the grain size of cubic samples decreasing, it was clearly observed that the position of TDS peak related to bulk diffusion moved to a lower temperature because of shorter diffusion path. In comparison with computational simulation based on a diffusion model, a fair agreement between experiment and calculation was obtained.
