[en] This document gathers several contributions and reports which respectively proposes a synthesis of actions performed by the ASN after Fukushima with notably the additional safety assessment approach; describes the situation of the Belgium Doel 3 nuclear reactor after the detection of defects in its vessel; comments the assessment for 2011 of flows and stocks of nuclear materials and wastes; discusses the various issues related to vessel controls (vessel fabrication, types of defects, controls performed during exploitation); reports the actions which have already been performed or are currently being performed in response to the incident which occurred in the Penly nuclear power station in April 2012; presents and comments the national inventory of radioactive materials and wastes performed by the ANDRA in 2012 (status at the end of 2010, predictions for 2020 and 2030, valorization possibilities, prospective scenarios, polluted sites, immersed wastes); presents and reports studies performed on a site and foreseen in the rest of France to perform a survey of the radiological impact on the environment of coal ashes; discusses the status of nuclear safety and radiation protection in France in 2011 (global assessment, events, inspections, impact of the Fukushima accident, various nuclear installations and activities, control of source safety, development of European cooperation); reports an incident which occurred in the Fessenheim nuclear power station in September 2012. These contributions are respectively entitled: 'Synthesis of post-Fukushima actions', 'Detection of defects on the Doel 3 vessel (Belgium)', 'Assessment 2011 of flows and stocks of materials', 'Radiological impact of coal ashes: additional study of underground waters' (by Jean-Paul Anzelot and Pierre Auzende), 'Vessel controls', 'National inventory of radioactive materials and wastes, Release 2012', 'Actions performed in environmental survey - radiological impacts around ash disposals, sites under State's responsibility', 'Report on the status of nuclear safety and radioprotection in France in 2011', 'Event of September 5, 2012 in the Fessenheim nuclear power station during a maintenance activity: release of water steam and oxygenated water from a tank for reagent preparation'