Challenges faced by technical and scientific support organisations i n enhancing nuclear safety : proceedings of an International Confere nce Aix-en - Provence, 23-27 April 2007 - Vienna : I.A.Energy Agency, 2007 - 297 p. : ill. ; 30 cm. Includes bibliographical references. Subjects--Topical Terms: Nuclearr energy-- Safety measures-- CongressesNulear energy-- Safety regulations-- CongressesNclear power plants-- Risk assessment-- Congresses