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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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PR: American Nuclear Society welcomes Senate confirmation of Ted Garrish as the DOE’s nuclear energy secretary
Washington, D.C. — The American Nuclear Society (ANS) applauds the U.S. Senate's confirmation of Theodore “Ted” Garrish as Assistant Secretary for Nuclear Energy at the U.S. Department of Energy (DOE).
“On behalf of over 11,000 professionals in the fields of nuclear science and technology, the American Nuclear Society congratulates Mr. Garrish on being confirmed by the Senate to once again lead the DOE Office of Nuclear Energy,” said ANS President H.M. "Hash" Hashemian.
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.