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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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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ANS joins others in seeking to discuss SNF/HLW impasse
The American Nuclear Society joined seven other organizations to send a letter to Energy Secretary Christopher Wright on July 8, asking to meet with him to discuss “the restoration of a highly functioning program to meet DOE’s legal responsibility to manage and dispose of the nation’s commercial and legacy defense spent nuclear fuel (SNF) and high-level radioactive waste (HLW).”
P. C. Fung, G. W. Bird, N. S. Mcintyre, G. G. Sanipelli, V. J. Lopata
Nuclear Technology | Volume 51 | Number 2 | December 1980 | Pages 188-196
Technical Paper | Argonne National Laboratory Specialists’ Workshop on Basic Research Needs for Nuclear Waste Management / Radioactive Waste | doi.org/10.13182/NT80-A32600
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The rate of sodium and potassium released from an alkali feldspar reacting with an aqueous solution varied with time. After an initial rapid exchange of alkalis for H+, dissolution rate decreased gradually, following in sequence, exponential, parabolic, and linear kinetics. Silicon was not released in the earlier stages but subsequently behaved very similarly to the alkalis. Aluminum behaved very similarly to the alkalis at the early stages but quickly reached saturation. Under an inert atmosphere, the pH of the solution was buffered at 8 to 10 after the initial sharp rise during the ion exchange stage. Dissolution occurred preferentially along crystal imperfections such as fractures, fluid inclusions, and grain boundaries rather than uniformly throughout the entire surface. The surface of a feldspar dissolved incongruently for the first few days of reaction but dissolved congruently thereafter. Clusters of precipitates occurred as discrete growths covering only small parts of the surface and were unlikely to retard dissolution.