Provence‑Alpes‑Côte d’Azur REGION The Marseille division regulates nuclear safety, radiation protection and the transport of radioactive substances in the 6 départements of the Provence-Alpes-Côte d’Azur region. In 2023, ASN carried out 128 inspections in the Provence‑Alpes‑Côte d’Azur region, comprising 65 in the Basic Nuclear Installations (BNIs), 57 in small-scale nuclear facilities, four in the area of radioactive substance transport and two concerning ASN-approved organisations and laboratories. During 2023, two significant events rated level 1 on the International Nuclear and Radiological Events Scale (INES scale) were notified by the nuclear installation licensees. In small-scale nuclear activities, three significant events in the industrial sector rated level 1 on the INES scale were notified to ASN, and two significant events in the medical sector rated level 2 on the ASN-SFRO scale were notified to ASN. Cadarache site CEA cadarache centre Created in 1959, the CEA Cadarache centre is situated in the municipality of Saint-Paul-lez-Durance in the Bouches‑du‑Rhône département and covers a surface area of 1,600 hectares. This site focuses its activity primarily on nuclear energy and, as concerns its civil installations in operation, on research and development to support and optimise the existing reactors and the design of new-generation systems. A large part of the centre’s facilities are moreover involved in conducting the strategy for decommissioning and management of radioactive materials and waste of the Alternative Energies and Atomic Energy Commission (CEA). The following BNIs are located on the site: • the Pégase‑Cascad installation (BNI 22); • the Cabri research reactor (BNI 24); • the Rapsodie research reactor (BNI 25); • the Plutonium technology facility (ATPu – BNI 32); • the Solid Waste Treatment Station (STD – BNI 37-A); • the Active Effluent Treatment Station (STE – BNI 37-B); • the Masurca research reactor (BNI 39); • the Éole / Minerve research reactor (BNI 42-U); • the enriched Uranium Processing Facilities (ATUe – BNI 52); • the Central Fissile Material Warehouse (MCMF – BNI 53); • the Chemical Purification Laboratory (LPC – BNI 54); • the High-Activity Laboratory LECA‑STAR (BNI 55); • the solid radioactive waste storage area (BNI 56); • the Phébus research reactor (BNI 92); • the Laboratory for research and experimental fabrication of advanced nuclear fuels (Lefca – BNI 123); • the Chicade laboratory (BNI 156); • the Cedra storage facility (BNI 164); • the Magenta storage warehouse (BNI 169); • the Effluent advanced management and processing facility (Agate – BNI 171); • the Jules Horowitz Reactor (JHR – BNI 172), under construction. The CEA Cadarache centre operates numerous installations which vary in their nature and their safety implications. At the Cadarache centre, ten installations are in final shutdown status, nine are in operation and one is under construction. ASN has started or is continuing the examination of the periodic safety review guidance files or the concluding reports for 13 of the 20 installations: Cascad, Cabri, STE, ATPu, Éole / Minerve, MCMF, LPC, LECA-STAR, Phébus, Lefca, Cedra, Magenta and Agate, and has issued its conclusions on the periodic safety review of the STD. When examining these reports, ASN is particularly attentive to the robustness of the proposed and deployed action plans. It ensures that the installations are in conformity with the applicable regulations and that the risks and adverse effects are effectively controlled. Pégase‑Cascad facility – CEA centre The Pégase reactor (BNI 22) entered service on the Cadarache site in 1964 and was operated for about ten years. The CEA was authorised by a Decree of 17 April 1980 to reuse the Pégase facility for the storage of radioactive substances, in particular spent fuel elements stored in a pool. The Cascad facility, authorised by a Decree of 4 September 1989 modifying the Pégase facility and operated since 1990, remains in service, dedicated to the dry storage of irradiated fuel in wells. The update of the CEA’s decommissioning file was submitted to ASN at the end of 2023, after completion of the assessment of the initial file. 88 ABSTRACTS – ASN Report on the state of nuclear safety and radiation protection in France in 2023
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