Didier LOUVAT is the Managing Director of the European Nuclear Safety Training and Tutoring Institute, ENSTTI. From 2003 to 2010, He led the IAEA Programme on Radioactive Waste Management as Head of the Waste and Environmental Safety Section in the IAEA Department of Nuclear Safety and Security. Previous to that he headed the Radioecological Studies laboratory of the French Institute for Radiation Protection and Nuclear Safety, IRSN. Before that, he holds several positions at the Department of Nuclear Fuel Cycle of the French Atomic Energy Commission, CEA. Didier LOUVAT graduated in Geology at Paris University where he completed a PhD in Isotope Geochemistry.