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The Education, Training & Workforce Development Division provides communication among the academic, industrial, and governmental communities through the exchange of views and information on matters related to education, training and workforce development in nuclear and radiological science, engineering, and technology. Industry leaders, education and training professionals, and interested students work together through Society-sponsored meetings and publications, to enrich their professional development, to educate the general public, and to advance nuclear and radiological science and engineering.
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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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General Kenneth Nichols and the Manhattan Project
Nichols
The Oak Ridger has published the latest in a series of articles about General Kenneth D. Nichols, the Manhattan Project, and the 1954 Atomic Energy Act. The series has been produced by Nichols’ grandniece Barbara Rogers Scollin and Oak Ridge (Tenn.) city historian David Ray Smith. Gen. Nichols (1907–2000) was the district engineer for the Manhattan Engineer District during the Manhattan Project.
As Smith and Scollin explain, Nichols “had supervision of the research and development connected with, and the design, construction, and operation of, all plants required to produce plutonium-239 and uranium-235, including the construction of the towns of Oak Ridge, Tennessee, and Richland, Washington. The responsibility of his position was massive as he oversaw a workforce of both military and civilian personnel of approximately 125,000; his Oak Ridge office became the center of the wartime atomic energy’s activities.”
Divya Jyoti Prakash, Youho Lee (Univ of New Mexico)
Proceedings | Advances in Thermal Hydraulics 2018 | Orlando, FL, November 11-15, 2018 | Pages 600-611
Poor resistance to thermal shock is one of the major limiting factors for ceramic materials to be used as nuclear structural materials. Most past efforts to improve thermal shock tolerance focused on increasing material strength, thermal conductivity. As much as the material aspect of thermal shock tolerance is concerned, convective heat transfer is the other critical component for thermal shock tolerance, as it determines non-uniform temperature fields leading to thermal stresses. Our approach is to achieve thermal shock tolerance by reducing surface heat flux with surface modification. We perform a systematic study of the thermal shock experienced by the alumina during quenching by cold water droplet impingement with heated surface temperature ranging from 125°C to 475°C for Weber number ?32. Degree of thermal shock is gauged from the residual strength of material post quenching. We find clear sign of thermal shock fracture for as received hydrophilic alumina due to higher heat flux during nucleate and transition boiling mode of heat transfer. Residual strength is nearly constant for surface modified alumina due to the hydrophobic nano-fractal surface that promoted film boiling mode of heat transfer, implying significant improvement in thermal shock tolerance with reduced heat flux. This is a novel approach to reduce thermal shock by controlling the heat transfer with surface modification, different from conventional, yet expensive, method of improving the bulk material properties. The presented method of improving thermal shock tolerance can be applied to various nuclear power plant components, including turbine blades.