The reinforced concrete is a material widely used in nuclear power plants and waste facilities. These structures are required to fulfil several conditions in terms of safety and durability. The international Workshop entitled “NUCPERF 2006, Corrosion and Long Term Performance of Concrete in NPP and Waste Facilities" (EFC Event 284) has been held at Cadarache (France), on 27-30 March 2006 with the objective to share the scientific basis related to the long term behaviour of nuclear concrete structures.
For modern concretes, such as would be used in fabrication of fuel cycle- related facilities, new knowledges are needed to improve their long term performances. Additional inputs are also required in several areas to provide confidence in the durability of structures, the life time of which will be extended. The proceedings are covered in the 32 papers of this volume and include reports from 15 different countries. They include experimental studies, field experience reports and developments of deterministic and service life models. Present and future expectations are also included with respect to regulations and standards, design codes and R&D programmes dedicated to the understanding and the modelling of long-term reinforced concrete behaviour in nuclear industry.