NANTES DIVISION Three inspections of PAB managers (municipal councils of Saint-Herblain and Saint-Malo, and the Group VYV3 Pays de la Loire, which manages nursery schools in the Loire-Atlantique and Maine-et-Loire départements). The inspections found that the radon risk is duly taken into account, even if some improvements are required in the regulatory posting of the results, in the assessment of the radon risk for workers, and lastly in taking into account the radon risk in buildings when works are carried out. Two specific workplace inspections: Keolis Rennes (metro) and Effia Stationnement. These inspections revealed that the assessment of the radon risk for workers had been carried out either recently or not at all by these organisations. STRASBOURG AND CHÂLONS- EN-CHAMPAGNE DIVISIONS Three inspections of PAB managers (Regional Council, European Collectivity of Alsace, and ADAPEI Papillons Blancs, an association providing facilities for disabled persons). These managers have taken due account of the radon risk, even if the PABs concerned are not always fully identified. Furthermore, a number of deviations were noted regarding the measurement frequency and the implementation of corrective actions, expert assessments and works when the reference level is exceeded. Lastly, two points requiring particular attention were noted: the first concerns the conservation of the history of past actions and the second the methods of assessing the radon risk for workers, which differ from those for the public. One specific workplace inspection at the Tellure mining tourist park, within which management of the radon exposure risk has just started. Two inspections of spas: Vittel and Contrexéville (see box on spas next page). BORDEAUX DIVISION In Occitanie, inspections of the Departmental Councils of the Ariège and Hautes-Pyrénées départements with the participation of the ARS of Occitanie. ASN notes that the regulations are duly taken into account in the Ariège département, whereas there are some shortcomings in the Hautes-Pyrénées département, where expert assessments of buildings must be undertaken. In Nouvelle-Aquitaine, inspections of three Departmental Councils: DeuxSèvres, Creuse and Haute-Vienne. The radon risk is clearly identified and taken into account (measurement campaigns, remedial actions undertaken, etc.); additional actions are nevertheless required in the cases where reference level is still exceeded (Deux-Sèvres, Haute-Vienne) or to check the effectiveness of the corrective actions (Creuse). One inspection of a spa facility in Jonzac. This facility has carried out studies revealing concentrations below the reference level in the rooms measured, and relatively low radon concentrations in the spa water. A campaign of workplace measurements is scheduled for 2024; the assessment of the radon exposure risk for the workers will have to be formalised accordingly. CAEN DIVISION Inspections of PAB managers (the Normandie Region and the Departmental Council of Orne) with highly positive results as the radon risk is addressed with great diligence in the PABs concerned. One specific workplace inspection carried out in the last quarter (the Rabodanges dam operated by EDF, where the plant features a well and an underground gallery): the risk assessment procedure has been started but measurement campaigns have not yet been carried out. MARSEILLE DIVISION One specific workplace inspection at ESCOTA, a subsidiary of Vinci Autoroutes, manager of motorway tunnels. The radon risk assessment procedure has not yet been implemented in this company, which did not know the regulations applicable in this domain. The division asked for a risk reduction action plan to be put in place within three months, with a progress assessment in early 2025. One inspection of the Cannes municipal council as PAB manager, with the competent ARS. The municipal council has taken due account of the regulations (training of an in-house resource person, measurements in virtually all the educational institutions with posting of the results). BRETAGNE / PAYS DE LA LOIRE GRAND EST NOUVELLE-AQUITAINE / OCCITANIE NORMANDIE PROVENCE-ALPES-CÔTE D’AZUR / OCCITANIE ••• In 2023, 12 organisations approved for measuring radon were inspected with the assistance of the regional divisions. The scope of ASN’s oversight concerned the verification of compliance with the applicable requirements of the Public Health Code, and its Articles L. 1333-29 to 31 and R. 1333-166 in particular, the Order of 26 February 2019 on the methods of managing radon in certain PABs, and three ASN resolutions, two of which entered into application on 1 January 2023: resolutions 2015-DC-0506 of 9 April 2015, 2022-DC-0743 and 2022-DC-0745 of 13 October 2022. The results are broadly satisfactory. Most of the requirements of the new ASN resolution 2022-DC-0743 of 13 October 2022 regarding the content of the intervention reports have been effectively taken into account in the report templates examined, even if a few omissions sometimes subsist. These inspections moreover revealed several positive points, including the putting in place of procedures and an organisation for supervising the work, the use of detectors complying with regulatory requirements in all cases, storage conditions guaranteeing that detector performance is maintained, and compliance with the measurement frequencies and durations. Efforts must nevertheless be made within some organisations to improve the monitoring of regulations and standards and to guarantee the quality of the measurement services. Improvements are also required in the following: knowledge of the scope of the regulations (particularly in the case of PABs situated in zones 1 and 2); the methodology for determining and selecting homogeneous zones (failure to take into account the temperature level and poor knowledge of the rules of progression in the levels); the methodology for calculating the activity concentration values to be attributed to a homogeneous zone if a result is below the detection limit; the safeguarding and reliability of the report drafting aids; the processing of deviations and their consequences on the conclusions; the follow-ups given when several buildings are persistently above the reference level; compliance with the deadlines for sending the detectors to the laboratories and the reports to the ordering parties; lastly, the completeness of the measurement data transmitted via the platform démarches-simplifiées.fr. 118 ASN Report on the state of nuclear safety and radiation protection in France in 2023 • 01 • Nuclear activities: ionising radiation and health and environmental risks
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