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
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
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
Apr 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
June 2025
Nuclear Technology
May 2025
Fusion Science and Technology
Latest News
Sam Altman steps down as Oklo board chair
Advanced nuclear company Oklo Inc. has new leadership for its board of directors as billionaire Sam Altman is stepping down from the position he has held since 2015. The move is meant to open new partnership opportunities with OpenAI, where Altman is CEO, and other artificial intelligence companies.
Nomination Deadline
March 1 &
August 1
Presented at the
Annual & Winter Conference
Award
$2,500* and a Bronze Medallion
The Untermeyer & Cisler Reactor Technology Medal recognizes an individual(s) who have made outstanding scientific, engineering, or management contributions to the advancement of nuclear reactor technology. The contributions may involve technology development, reactor system design, safety, deployment, or operation. The award scope considers any fission-based reactor technology.
The award consists of an engraved medal and a monetary award of $2500*. The award is to be made twice per year, normally conferred during the ANS Annual or Winter Conference.
Nominees may be from any nation, must be living at the time the awardee is selected, and do not need to be ANS members.
*In lieu of a cash award, recipients can opt for travel reimbursement up to the award amount.
This award is a combination of the earlier independent Untermyer, Cisler, and Reactor Technology awards. The three awards were combined in 2023 by the ANS Honors & Awards Committee.
Nominations must include the completed nomination form accompanied by the following supporting documents:
The selection committee consists of seven (7) members – six (6) from the Honors and Awards Committee and one (1) from Atomic Energy Society of Japan, appointed by AESJ. They review the nominations and make their recommendation to the chair of the Honors and Awards Committee. If the committee determines that there is no candidate of sufficient merit, the committee may recommend that the award not be made in that year.
View Award