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
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
Meeting Spotlight
2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott 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
Jun 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
July 2025
Nuclear Technology
June 2025
Fusion Science and Technology
Latest News
Nominations open for CNTA awards
Citizens for Nuclear Technology Awareness is accepting nominations for its Fred C. Davison Distinguished Scientist Award and its Nuclear Service Award. Nominations for both awards must be submitted by August 1.
The awards will be presented this fall as part of the CNTA’s annual Edward Teller Lecture event.
April 17, 2025|5:00–6:00PM (6:00–7:00PM EDT)
Available to All Users
Radiation is all around us—but how risky is it, really? Robert Hayes, Associate Professor of Nuclear Engineering at NC State University, puts radiological risk into perspective using data-driven comparisons and real-world examples. He examines how radiation exposure is measured, what levels are considered safe, and how public perception often diverges from scientific consensus.
Robert Hayes is an Associate Professor of Nuclear Engineering at North Carolina State University and a joint faculty member at Savannah River National Laboratory. He is a licensed Professional Engineer, Certified Health Physicist, and Fellow of both the Health Physics Society and the American Physical Society. His research focuses on radiological risk assessment, radiation shielding, nuclear forensics, nonproliferation monitoring, retrospective dosimetry, air monitoring, and nuclear waste management. He previously held senior technical roles at the Waste Isolation Pilot Plant and the former Nevada Test Site, supporting operational radiation protection and safety analysis. Dr. Hayes also serves on the U.S. Department of Energy’s Advisory Committee on Nuclear Security, contributing to national guidance on radiological safety and risk communication. His work integrates experimental measurements, regulatory compliance, engineering modeling, and public engagement to advance radiological protection in both technical and societal contexts.
Christopher Perfetti is an Associate Professor in the Nuclear Engineering Department at the University of New Mexico. Prior to his appointment at UNM, Chris was an R&D scientist at Oak Ridge National Laboratory, where he served as the Sensitivity and Uncertainty Analysis Method Team Lead for the SCALE Code Package. Chris received BS and MS degrees in nuclear and radiological engineering from the University of Florida in 2007 and 2008, respectively, and his PhD in nuclear engineering from the University of Michigan in 2012. His research interests include sensitivity and uncertainty analysis method development, Monte Carlo method development, advanced reactor core design, nuclear criticality safety, radioisotope production, and radiation shielding. Chris has served as the Chair of the American Nuclear Society’s Reactor Physics Division, Chair of the Alpha Nu Sigma National Honor Society, Chair of the Trinity (NM) ANS Local Section, and Chair of the Oak Ridge/Knoxville ANS Local Section. He currently serves as the Secretary of the ANS Education, Training, and Workforce Development Division, as the Chair of the Adult Education Committee for the National Museum of Nuclear Science and History, and as the General Chair of the upcoming M&C2025 topical meeting. In his free time, Chris enjoys cycling, hiking, and taking his daughters to museums.