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
Norway’s Halden reactor takes first step toward decommissioning
The government of Norway has granted the transfer of the Halden research reactor from the Institute for Energy Technology (IFE) to the state agency Norwegian Nuclear Decommissioning (NND). The 25-MWt Halden boiling water reactor operated from 1958 to 2018 and was used in the research of nuclear fuel, reactor internals, plant procedures and monitoring, and human factors.
R. A. Baker, Alexander, Sesonske
Nuclear Science and Engineering | Volume 13 | Number 3 | July 1962 | Pages 283-288
Technical Paper | doi.org/10.13182/NSE62-A26165
Articles are hosted by Taylor and Francis Online.
To provide heat transfer data of high precision for NaK heat exchange systems, a NaK heat transfer loop was designed to minimize experimental errors and yield results with a high degree of reproducibility. Average heat transfer coefficients were determined for both tube and annulus in a horizontal concentric tube, NaK (56% K) to NaK exchanger. The results after correction for entrance effects are described by the following empirical relations: No distinction was found between the Nusselt moduli measured at uniform heat flux and those measured at variable heat flux. No change in the experimental Nusselt moduli was observed when the oxide content was varied between 0.0025 and 0.006 wt. % oxygen.