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
Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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!
Latest Magazine Issues
Mar 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
May 2025
Nuclear Technology
April 2025
Fusion Science and Technology
Latest News
El Salvador: Looking to nuclear
In 2022, El Salvador’s leadership decided to expand its modest, mostly hydro- and geothermal-based electricity system, which is supported by expensive imported natural gas and diesel generation. They chose to use advanced nuclear reactors, preferably fueled by thorium-based fuels, to power their civilian efforts. The choice of thorium was made to inform the world that the reactor program was for civilian purposes only, and so they chose a fuel that was plentiful, easy to source and work with, and not a proliferation risk.
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