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
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
Apr 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
May 2025
Nuclear Technology
April 2025
Fusion Science and Technology
Latest News
First astatine-labeled compound shipped in the U.S.
The Department of Energy’s National Isotope Development Center (NIDC) on March 31 announced the successful long-distance shipment in the United States of a biologically active compound labeled with the medical radioisotope astatine-211 (At-211). Because previous shipments have included only the “bare” isotope, the NIDC has described the development as “unleashing medical innovation.”
Sung Kon Kang, Kyung Min Kim, Ki Hwan Kim, Yeon Sub Jung (KHNP)
Proceedings | Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technolgies (NPIC&HMIT 2019) | Orlando, FL, February 9-14, 2019 | Pages 158-165
We had first developed APR1400 simulator with the form of emulation to perform HFE V&V of the MMIS in the construction phase of Saewool 1&2 nuclear power plant. And then APR1400 simulator was developed gradually reflecting design change and transformed into the APR1400 training simulator, and finally contributed to the acquisition of the operating license. But if MMIS related problem or MMIS design change happens in the digitalized MMIS in the plant operation phase, we need to perform MMIS V&V including control logic and MMI function through the most similar testbed. But plant MMIS cannot be fully tested with the limited condition of the emulated simulator. We have come up with new method to perform operator training and MMIS V&V simultaneously. Accordingly, we adopted virtual Distributed Control System (DCS) to implement plant MMIS in the APR1400 training simulator. This virtual DCS has the same control logic and MMI function as plant is provided. Three types for simulator operation will be provided. First mode is hybrid mode which is implemented with the form of emulated MMI and real plant control logic implemented with virtual DCS for operators’ training as well as control logic V&V. Second mode is emulation mode which is implemented with the form of emulated MMI and control logic. Final mode is stimulation mode which is fully implemented with the form of real plant MMIS including control logic and MMI function. This approach provides opportunity that complex control logic such as NSSS Process Control System can be validated before real control logics are applied in plant MMIS and improves coping capability of operator due to operator’s training in the same environment as plant. Application of this method can reduce plant transient state and unexpected plant event through the resolution of MMIS fault in advance.