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.
Explore membership for yourself or for your organization.
Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
September 2025
Nuclear Technology
August 2025
Fusion Science and Technology
Latest News
INL makes a case for eliminating ALARA and setting higher dose limits
A report just released by Idaho National Laboratory reviews decades of radiation protection standards and research on the health effects of low-dose radiation and recommends that the current U.S. annual occupational dose limit of 5,000 mrem be maintained without applying ALARA—the “as low as reasonably achievable” regulatory concept first introduced in 1971—below that threshold.
Noting that epidemiological studies “have consistently failed to demonstrate statistically significant health effects at doses below 10,000 mrem delivered at low dose rates,” the report also recommends “future consideration of increasing this limit to 10,000 mrem/year with appropriate cumulative-dose constraints.”
Plutonium Futures - The Science 2024
Nik Kaltsoyannis was educated at both undergraduate and doctoral levels at the University of Oxford, UK, completing his DPhil with Professor Jennifer Green in 1992. He subsequently moved to the USA, first to a University Postdoctoral Fellowship at The University of Ohio State with Professor Bruce Bursten, and then to a NATO Postdoctoral Fellowship at the Lawrence Berkeley National Laboratory with Dr Norman Edelstein. He returned to the UK in 1994, and spent 21 years on the academic staff at University College London, becoming full Professor of Computational Chemistry in 2007. In 2015 he moved to the University of Manchester, where he is currently Professor and Head of Computational Chemistry, and Co‑Director of the Centre for Radiochemistry Research. His research interests focus on the quantum chemical study of molecular and extended solid compounds of the f elements. He has authored more than 200 primary research articles, an f element textbook, and several book chapters and reviews.
Last modified March 26, 2024, 4:25pm EDT