ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
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
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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!
Latest Magazine Issues
Jul 2024
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Nuclear Science and Engineering
August 2024
Nuclear Technology
Fusion Science and Technology
Latest News
Four million nuclear jobs by 2050: Who will do them?
Industry leaders from around the globe met this month to discuss the talent development that will be necessary for the long-term success of the nuclear industry.
The International Conference on Nuclear Knowledge Management and Human Resources Development, hosted by the International Atomic Energy Agency, was held in Vienna earlier this month. Discussed there was the agency’s forecast for nuclear capacity to more than double—or hopefully triple—by 2050 and the requirement of more than four million professionals to support the industry.
Friedrich Helm, Georg Henneges
Nuclear Technology | Volume 71 | Number 1 | October 1985 | Pages 68-81
Technical Paper | Fission Reactor | doi.org/10.13182/NT85-A33710
Articles are hosted by Taylor and Francis Online.
In the critical assembly SNEAK 12B, the reactivity effects of material movements occurring in a postulated fast reactor accident were investigated in a test zone composed of PuO2UO2 rod bundles. The experimental program included addition and removal of fuel, addition of steel between the fuel rods, and vertical and horizontal relocation of fuel. The measured reactivity changes could be well reproduced by eigenvalue calculations in SN transport theory, while first-order perturbation transport theory and diffusion theory in most cases yielded substantial deviations.
