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
ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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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February 2025
Latest News
Investment bill would provide funding options for energy projects
Coons
Moran
The bipartisan Financing Our Futures Act, which expands certain financing tools to all types of energy resources and infrastructure projects, was reintroduced to the U.S. Senate on February 20 by Sens. Jerry Moran (R., Kan.) and Chris Coons (D., Del.).
Via amendment to the Internal Revenue Code, the legislation would allow advanced nuclear energy projects to form as master limited partnerships (MLPs), a tax structure currently available only to traditional energy projects.
An MLP is a business structure that is taxed as a partnership but the ownership interests of which are traded like corporate stock on a market. Until the Internal Revenue Code is amended, MLPs will continue to be available only to investors in energy portfolios for oil, natural gas, coal extraction, and pipeline projects that derive at least 90 percent of their income from these sources. This change would take effect on January 1, 2026.
J. C. Manaranche, D. Mangin, L. Maubert, G. Colomb, G. Poullot
Nuclear Technology | Volume 50 | Number 2 | September 1980 | Pages 148-157
Technical Paper | Fuel Cycle | doi.org/10.13182/NT80-A32540
Articles are hosted by Taylor and Francis Online.
The Nuclear Safety Department of the French Commissariat à l’Energie Atomique has achieved an important experimental program relating to the criticality of 4.75-wt%-235U-enriched UO2 rods in water with various configurations. Two steps of this program are set out. The first one consisted of doing the parametric study of regular lattices of rods in a sodium nitrate solution (study connected with the problems raised by the dissolution of irradiated elements). The results obtained show the poisoning effect due to the nitrate ion at various concentrations. The second step concerns the study of the effect due to the interpositioning of hydrogenous materials between four 18 × 18 assemblies at 13.5-mm square pitch (study connected with the problems raised by the accidental sprinkling of a mist into a fuel storage). The results obtained allow one to determine the optimum theoretical moderation conditions for the storage of new fuel elements. In all cases the theoretical results are in good agreement with experimental results.
