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
Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
Meeting Spotlight
2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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
May 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
June 2024
Nuclear Technology
Fusion Science and Technology
Latest News
Excelsior University student section awarded community education grant
The American Nuclear Society Student Section at Excelsior University in Albany, N.Y., was awarded a $5,000 grant from the ANS Student Section Strategic Fund initiative for its program, Empowering Tomorrow’s Nuclear Innovators: A Collaborative Approach to Nuclear Technology Education and Awareness.
Paul Thomet
Nuclear Technology | Volume 127 | Number 3 | September 1999 | Pages 259-266
Technical Paper | Fission Reactors | doi.org/10.13182/NT127-259
Articles are hosted by Taylor and Francis Online.
Feasibility studies of an advanced 900-MW(electric) pressurized water reactor (PWR) aiming at the total elimination of soluble boron during normal reactor operation (extended uranium cycle length of 16 GWd/t) are summarized.The neutronic consequences of this boron elimination on assembly design (poisoning, moderation ratio, cluster system, etc.) are presented. The specific assembly geometry has been optimized by taking into account a number of parameters, in particular the moderating ratio and thermal-hydraulic performances.The modifications that must be made to a standard PWR are studied (loading pattern and control rod management) to control the core with the same safety criteria as for the standard PWR, during the whole cycle, from power operation to cold shutdown. A new control rod system, with two different kinds of control rod clusters, has been developed. The first allows power control during operation while the second ensures cold shutdown. It is shown that these modifications do not require different technologies from those of present PWRs.