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Accelerator Applications
The division was organized to promote the advancement of knowledge of the use of particle accelerator technologies for nuclear and other applications. It focuses on production of neutrons and other particles, utilization of these particles for scientific or industrial purposes, such as the production or destruction of radionuclides significant to energy, medicine, defense or other endeavors, as well as imaging and diagnostics.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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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.
B. H. Mills, J. D. Rader, D. L. Sadowski, S. I. Abdel-Khalik, M. Yoda
Fusion Science and Technology | Volume 60 | Number 1 | July 2011 | Pages 190-196
Divertor & High Heat Flux Components | Proceedings of the Nineteenth Topical Meeting on the Technology of Fusion Energy (TOFE) (Part 1) | doi.org/10.13182/FST11-A12350
Articles are hosted by Taylor and Francis Online.
The addition of fins to the cooled surface of gas-cooled divertor modules has been proposed as a means to enhance their thermal performance, in the HEMP concept, for example. Such fins enhance heat transfer by significantly increasing the surface area over which convection occurs. However, adding fins also increases pressure losses and manufacturing costs and can adversely affect coolant flow over the cooled surface. More importantly, the high heat transfer coefficients expected with helium (He) cooling may significantly lower the fin efficiency, thereby limiting the extent of heat transfer enhancement to values well below the increase in the area ratio. An experimental investigation was undertaken to quantify the extent of heat transfer enhancement and corresponding pressure loss increase associated with the addition of pin fins to the cooled surface of a modular, helium-cooled, finger-type divertor. Four test cases, including configurations similar to the HEMP and HEMJ concepts, were studied. The results show that the addition of fins to helium jet-cooled finger divertors may not provide enough heat transfer enhancement to justify the associated increases in design complexity and pressure loss. Generalized charts for the thermal performance of helium-cooled divertors have been developed; these allow the designers to estimate the maximum allowable heat flux and corresponding pressure drop for a specified set of operating conditions and maximum operating temperature.