ASN Report 2023

AWARENESS-RAISING ACTIONS LYON DIVISION Participation in an awareness-raising initiative organised by the Prevention and Occupational Health Services (SPST) under the Regional Occupational Health Plan (PRST) 4. DIJON DIVISION Participation in the scaling up of the regional health / environment network baptised “Éclaireurs QAI-radon” (Interior Air Quality Pathfinders – Radon) (drawing up and launching a roadmap). Created in 2022, this network aims to organise and energise the actions taken in Bourgogne-Franche-Comté to promote the improvement of interior air quality (radon included). NANTES DIVISION Cofinancing of several initiatives in Pays de la Loire to assist private individuals in conducting voluntary campaigns to measure radon in the home and participation in the public kick-off meetings. Contribution to the working groups of the Regional Health Environment Plans (PRSEs) and the PRSTs of the two regions. In this context, in Pays de la Loire, holding of an interview for a film-review of PRSE3, participation in the production of an animated film on radon in the working environment and the drafting of Frequently Asked Questions (FAQ) for the employers in the region. Cofinancing and participation in an information morning on radon for the owners and/or managers of PABs and employers in Pontivy (Morbihan département) during the European Radon Day on 7 November. Joint visit with the ARS in July to a household in the Maine et Loire département where a very high radon level was registered during the winter campaign of 2022-2023. STRASBOURG AND CHÂLONS- EN-CHAMPAGNE DIVISIONS Participation in the radon-related initiatives of the region PRST. BORDEAUX DIVISION Participation in an information session for the preventers of the NouvelleAquitaine region during a webinar on the regulations relative to radon exposure organised as part of PRST4. Participation in the Nouvelle-Aquitaine and Occitanie PRSE4 preparation meetings. Presentation of the regulations relative to occupational exposure to radon during the scientific days of the “South-West Network of Radiation Protection Experts & Radiation Protection actors”. CAEN DIVISION Participation with the Dreets, ARS and the occupational health services of West Normandie in the creation of a training course for the occupational health services on taking the radon risk into account in companies, which will be launched in 2024. Involvement in the work to launch PRSE4 Normandie. MARSEILLE DIVISION Participation in the preparation of the PRSE4 Occitanie jointly with the Bordeaux division. Participation in the updating of the Departmental File on Major Risks in the Pyrénées-Orientales (DDRM 66 – 2023 Issue). AUVERGNE‑RHÔNE‑ALPES BOURGOGNE‑FRANCHE‑COMTÉ BRETAGNE / PAYS DE LA LOIRE GRAND EST NOUVELLE-AQUITAINE / OCCITANIE NORMANDIE PROVENCE-ALPES-CÔTE D’AZUR / OCCITANIE ••• OVERSIGHT ACTIONS LYON DIVISION Two inspections of local authorities (towns of Saint-Étienne and Aurillac) responsible for educational institutions. The follow-up of radon risk management in the nursery schools and public schools concerned is broadly satisfactory, but one PAB in Saint-Étienne has persistently exceeded the reference level for more than ten years now, despite having taken corrective measures. Further measures are already scheduled to remedy this. For the town of Aurillac, slippages were noted in the screening schedule for two PABs, leading the division to issue a reminder of the regulatory obligations regarding management of the radon risk in PABs. Vicat quarry in Saint‑Laurent‑du‑Pont: the risk of worker exposure to radon is taken into account; however, the recent developments on the site make a new measurement campaign necessary. Orbagnoux mines in Corbonod and Samin quarries in Châtillon‑en‑Michaille: the radon exposure risk is taken into account and the latest measurement results available show the effectiveness of the prevention measures; an update of the risk assessment must nevertheless be carried out to take into account the changes in activity (Orbagnoux mines) and above-ground buildings (Samin quarries). EDF Mont‑Cenis dam: the radon risk prevention approach has been very well assimilated. DIJON DIVISION Four inspections of municipal federations (“Mille Étangs”, “Morvan Sommets et Grands Lacs”, “Avallon Vézelay Morvan” and “Arroux, Loire et Somme”). With the exception of “Avallon Vézelay Morvan” which manages the radon risk in a highly satisfactory manner, these local authorities have not started applying the regulatory obligations under both the Public Health Code (initial measurements of the radon activity concentration in PABs) and the Labour Code (risk assessment). This finding led ASN to demand that the regulatory screening measurements be carried out, jointly with the occupational exposure risk assessment. One inspection of a spa (Bourbon Lancy Spa) which had taken radon measurements as required under the Public Health Code and the Labour Code revealing several exceedances of the reference level, but without taking the necessary corrective actions. The division required the facility implement an action plan to reduce the risk (see box on spas page 119). One specific workplace inspection at the Vouglans hydroelectric dam, operated by EDF Hydro Alpes. The organisation and the measures to ensure the radiation protection of the workers against the risk of radon exposure are highly satisfactory and duly formalised on this site. AUVERGNE‑RHÔNE‑ALPES BOURGOGNE‑FRANCHE‑COMTÉ ASN Report on the state of nuclear safety and radiation protection in France in 2023 117 • 01 • Nuclear activities: ionising radiation and health and environmental risks 01 05 15 08 11 04 14 06 07 13 AP 03 10 02 09 12

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