Bourgogne-Franche-Comté 86 Rn radon ASNR actions to prevent radon risk Oversight actions In 2025, ASNR carried out four inspections in BourgogneFranche-Comté to assess radon risk management, both in Public Access Buildings (PABs) and in the workplace. Three of these inspections concerned municipal federations located in areas with significant radon potential (area 3). These inspections revealed that those in charge of local authority buildings in the départements of Territoire-de-Belfort (90) and Saône-et-Loire (71) were well aware of the requirements of the regulations, but not those in the département of Jura (39). All the local authorities were unfamiliar with the regulations applying to workplaces, and commitments were made to draw up an inventory of workplaces exposed to radon, followed by a risk assessment. An inspection was also carried out at a designated radon-risk workplace at a dam administered by a government body in the Nièvre département (58). The inspection revealed that the radon risk had not yet been taken into account in the occupational risk assessment.. Awareness-raising actions Moreover, the inspectors of the Dijon division usually take advantage of these nuclear activity inspections to inform the employers of the applicable regulatory provisions concerning radon. In particular, they underline the particular nature of the Bourgogne-Franche-Comté region, which has karstic subsoils that increase radon potential. This phenomenon, which is undergoing scientific studies, has not yet been incorporated into the municipal radon potential mapping established by the Order of 27 June 2018, which calls for a cautious approach to accounting for the likelihood of radon in municipalities in areas 1 and 2. The inspectors also stressed the importance of vigilance in terms of regulatory monitoring of radon risk management, particularly following changes to the Labour Code in 2025. ASNR also participates in the regional “Eclaireurs” network, which provides information and raises awareness, promotes available training courses, connects stakeholders, and facilitates the joint development of initiatives in Bourgogne-FrancheComté. In 2025, the regional “Eclaireurs” network continued its awareness-raising efforts targeting a range of audiences, including a regional meeting held on 11 September in Dijon, a webinar on 23 September on radon management in PABs, a stand at the regional “health-promoting urban planning” event on 7 October in Dijon, presentations during the “environmental health, the first 1,000 days and early childhood” training session on 25 November at Hospital Nord-Franche-Comté, videos broadcast in health centres, responses to enquiries, and other initiatives. After three years in existence, it is now also sharing its experience with players in other regions to encourage new initiatives. Areas with radon potential in mainland France, and particularly in the Bourgogne-Franche-Comté region, are shown on page 99. ABSTRACTS – ASNR Report on the state of nuclear safety and radiation protection in France in 2025 47
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