ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
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Division Spotlight
Reactor Physics
The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
Meeting Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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Latest News
Supreme Court rules against Texas in interim storage case
The Supreme Court voted 6–3 against Texas and a group of landowners today in a case involving the Nuclear Regulatory Commission’s licensing of a consolidated interim storage facility for spent nuclear fuel, reversing a decision by the 5th Circuit Court of Appeals to grant the state and landowners Fasken Land and Minerals (Fasken) standing to challenge the license.
Kenzo Munakata, Hiroshi Sugai, Shigehiko Miyachi, Shouzo Yasu
Nuclear Technology | Volume 98 | Number 2 | May 1992 | Pages 178-187
Technical Paper | Enrichment and Reprocessing System | doi.org/10.13182/NT92-A34673
Articles are hosted by Taylor and Francis Online.
“Crud” is a problem in the solvent extraction process for nuclear fuel reprocessing. Crud is an emulsion stabilized by dispersed fine solids. Insoluble residues and precipitates play an important role in crud formation. The effect of insoluble residues on crud formation is studied using submicron particles of palladium, which is one of the elements contained in insoluble residues. Experiments are conducted on factors such as palladium concentration, particle size, and acidity. The experimental results indicate that the smallest palladium concentration in the aqueous phase that can stabilize an emulsion is ∼5 g/ℓ and that such an emulsion is of the oil-in-water type. Moreover, the palladium layer on globules is discussed, and a numerical estimation is performed to predict the time when stable emulsions start to form in a mixer-settler.
