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
Fusion Energy
This division promotes the development and timely introduction of fusion energy as a sustainable energy source with favorable economic, environmental, and safety attributes. The division cooperates with other organizations on common issues of multidisciplinary fusion science and technology, conducts professional meetings, and disseminates technical information in support of these goals. Members focus on the assessment and resolution of critical developmental issues for practical fusion energy applications.
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.
Hakim Benabderrahmane (Andra), Johan Holmen (Golder Associates), Olivier Stab (Ecole Nationale des Mines de Paris), Jacques Brulhet (Andra)
Proceedings | 16th International High-Level Radioactive Waste Management Conference (IHLRWM 2017) | Charlotte, NC, April 9-13, 2017 | Pages 156-163
Safety assessment of a deep geological repository for radioactive wastes (IHLLW) requires identification of potential flow paths and the associated travel times for radionuclides originating at repository depth. The planned French repository will be located at great depths in the Callovo-Oxfordian clay formation of the multi-layered system of Paris Basin. Hydrogeological performance of the planned radioactive waste repository relies on analysis and assessment of the geodynamic evolution impact on groundwater flow behaviour in the multi-layered aquifer system through the next million of years. Numerical simulations coupling the geodynamic evolution and the groundwater flow describe how the tectonic uplift and erosion/sedimentation processes affect (i) the long term transient flow behaviour and (ii) the hydrogeological performance measures. Hydrogeological performance assessment of the potential repository site is performed by the use of particles transport model using a 3D transient flow field induced by: (i) deformation of the multi-layered aquifer system resulting from the differential tectonic uplift, (ii) evolution of the outcrop zones governed by erosion and incision of the geological layers and (iii) the climate changes. Outlets of the hydrogeological system are located and the associated transit times from the repository are estimated.
