Orano - Annual Activity Report 2025 199 SUSTAINABILITY STATEMENT 4 Social and societal information Highlights dedicated to safety are included in the calendar: Safety Month in June (safety event organized every year on all sites and open to all) and the message of “back to work safely” shared in September. Orano is vigilant in training its employees and those of external companies on safety and radiation protection aspects. Any employee from an external company working at an Orano facility is trained in the facility’s risks and safety rules. If they work in a demarcated zone for radiation, they must have completed the appropriate training. Particular attention is paid to taking into account feedback and the cross-functional sharing of these lessons through the processing of events or weak signals with high potential for seriousness in the safety analysis and feedback committee (CAP-REX). It is illustrated by the systematic analysis of the root causes of events known as High Potential serious injuries 1 and 2 (HIPO) and the implementation of an adapted action plan. A quarterly report on accident trends is carried out to identify the priority actions to be implemented. 2025 IN ACTION Launch of a fair and equitable culture approach The group has chosen the “fair and equitable culture” as a lever to advance safety, supporting the Company’s performance. A “fair and equitable” corporate culture is based on: ● an explicit red line between acceptable and unacceptable behaviors with regard to the fundamental rules; ● encouragement and recognition of expected behaviors and best practices; ● appropriate, systematic, fair and homogeneous management responses to any discrepancies. This culture promotes transparency and trust in organizations, thus helping to combat organizational silence. In 2025, it was rolled out at the Orano Tricastin site through managerial initiatives. Its roll-out in the rest of the group is scheduled for 2026. Radiation protection The risk of exposure to radiation is inherent to nuclear activities. To carry out their activities in the group’s facilities and those of their customers, in France and abroad, Orano employees and employees of external companies benefit from prevention and protection systems against radiation and undergo dosimetry monitoring adapted to the mode of exposure. Intervention principles in a radiological environment Operations in a radiological environment follow the fundamental principles of radiation protection: ● justifying practices: the use of radiation is justified when the benefit it can provide is greater than the disadvantages it can cause; ● optimizing exposure: equipment, processes and work organization are designed in such a way that individual and collective exposures are kept as low as reasonably achievable taking into account the state of technology and economic and societal factors (ALARA principle); and ● limiting individual doses: dose limits not to be exceeded are set to ensure that no deterministic effects occur and that the probability of stochastic effects appearing remains at a tolerable level given the economic and societal context. In Orano facilities, reducing exposure to radiation is built into the design of the facilities. The radiological protection provisions and the level of personnel monitoring are the same for all exposed workers in accordance with the application of the principle of fairness, which consists of ensuring an equitable distribution of individual doses in order to minimize dosimetric differences between workers. In order to limit as far as possible the dose received by workers in designated radiation areas, an in-depth study of the conditions of intervention and assessment of the dose forecasts before operation is carried out with, for example, an adaptation of the duration of exposure, protective screens, integration of physiological constraints related to the wearing of personal protective equipment (PPE) and the working environment. As part of the control of dosimetry, Orano remains attentive to situations that would lead to effective doses exceeding the internal alert criterion of 14 millisieverts (mSv) by requiring a systematic analysis of these situations in the Nuclear and Industrial Safety – Health – Occupational Safety – Radiation protection – Environment Policy. This analysis ensures the implementation of actions compatible with the activities of the facilities in application of the principle of optimization of radiation protection (ALARA). Regulatory monitoring makes it possible to take into account regular changes relating to the protection of workers against the risks of radiation. Updates to the requirements were published at the end of December 2024 and the end of December 2025. They are systematically analyzed. The French regulations concerning the dosimetry of the lens of the eye have changed significantly following the transposition of the EURATOM 2013/59 directive into the French Labor Code. The exposure limit value for the lens of the eye was gradually lowered to 20 mSv over 12 months on July 1, 2023. The lens of the eye dosimetry issues were taken into account at the concerned sites, and appropriate monitoring was deployed. A review of 2025 and 2026 priorities around the safety and radiation protection culture and the deployment of new standards Aimed at reducing the number of occupational injuries and their severity for employees and external workers, the proactive approach to developing a workplace safety culture and radiation protection continued in 2025.
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