in the sealing of the facility’s enclosures and glove boxes, in the conditions of reception of radioactive substance packages and in waste management. On this latter subject, ASN gave CIS bio international formal notice at the end of 2024 to remove, before the end of January 2025, certain nuclear wastes held in storage beyond the deadlines stipulated in the baseline requirements of the facility. A recurring nonconformity has been observed since 2022 in the effectiveness of the last filtration levels of the facility’s ventilation system. The technical causes of these deviations have not yet been found, therefore the investigations must continue in 2025 in order to introduce robust preventive measures. CIS bio international met the deadline set by ASN’s formal notice resolution of 2023 on the pressure equipment theme, even though further information is still awaited on this subject. More broadly, ASN notes – as was the case in the previous year – the difficulties CIS bio international is having in meeting the deadlines for the actions decided further to inspections or significant events and resulting from the action plan associated with the periodic safety review. Furthermore, and despite the substantial work undertaken, delays are still observed in submitting significant event reports and replying to ASN follow-up letters. This being said, the quality of the content of the significant event reports remains high and this must be maintained. The numerous projects, studies and works undertaken by CIS bio international require better scheduling so that the files to be addressed to ASN can be prepared and submitted sufficiently early. Operating rigour, maintaining the safety culture and the management of industrial projects or aiming to improve safety or radiation protection remain the areas in which CIS bio international must focus its efforts. To improve the performance in the areas of safety, radiation protection and the environment, the licensee must be particularly vigilant regarding the adequacy of the human and technical resources to be deployed, and ensure that these resources are sufficient to operate the facility in complete safety. CEA Fontenay‑aux‑Roses site Created in 1946 as the CEA’s first research centre, the Fontenay-aux-Roses site is continuing its transition from nuclear activities towards research activities in living sciences. The CEA Fontenay‑aux‑Roses site, part of the CEA Paris‑Saclay centre since 2017, comprises two BNIs, namely Procédé (BNI 165) and Support (BNI 166). BNI 165 accommodated the research and development activities on nuclear fuel reprocessing, transuranium elements, radioactive waste and the examination of irradiated fuels. These activities ceased in the 1980s-1990s. BNI 166 is a facility for the characterisation, treatment, reconditioning and storage of legacy radioactive waste from the decommissioning of BNI 165. Broadly speaking, the CEA’s decommissioning and waste management strategy has been examined by ASN, which stated its position in May 2019 on the priorities defined by the CEA (see chapters 14 and 15 of the full ASN Report). Decommissioning of the Fontenay‑aux‑Roses site includes priority operations because it presents particular risks, linked firstly to the quantity of radioactive waste present in the facilities, and secondly to the radiological contamination of the soils under part of one of the BNI 165 buildings. In addition to this, the Fontenay‑aux‑Roses centre, which is situated in a densely-populated urban area, is engaged in an overall delicensing process. Procédé and Support facilities Decommissioning of the two facilities Procédé and Support, which constitute BNI 165 and BNI 166 respectively, was authorised by two Decrees of 30 June 2006. The initial planned duration of the decommissioning operations was about ten years. The CEA informed ASN that, due to strong presumptions of radioactive contamination beneath one of the buildings, to unforeseen difficulties and to a change in the overall decommissioning strategy of the CEA’s civil centres, the decommissioning operations had to be extended and that the decommissioning plan would be modified. In June 2015, the CEA submitted an application to modify the prescribed deadlines for these decommissioning operations. ASN deemed that the first versions of these Decommissioning Decree modification application files were not admissible. In accordance with the commitments made in 2017, the CEA submitted the revised versions of these files in 2018. These files were supplemented over the 2019‑2022 period, particularly with respect to the planned decommissioning operations and their schedule. The CEA forecasts end of decommissioning of the BNIs beyond 2050, perhaps even 2060 in the case of BNI 165. These two projects are currently being examined. The new decrees will set the future decommissioning characteristics, and notably their completion time frame. 70 ABSTRACTS – ASN Report on the state of nuclear safety and radiation protection in France in 2024 Regional overview of nuclear safety and radiation protection ÎLE-DE-FRANCE
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