Orano - Annual Activity Report 2025 137 SUSTAINABILITY STATEMENT 4 Societal and environmental challenges at the heart of the strategy THRESHOLDS USED FOR THE MATERIALITY ANALYSIS IMPACT severity FINANCIAL severity Severity ➍ Very strong Very high: >100 million euros Very strong 4 8 12 16 ➌ Strong High: between 50 and 100 million euros Strong 3 6 9 12 ➋ Limited Limited: between 10 and 50 million euros Limited 2 4 6 8 ➊ Low or none Low or none: <10 million euros Low or none 1 2 3 4 Probability Improbable Unlikely Probable (once in the life of the group) Very likely or already happened ➊ ➋ ➌ ➍ Source Orano The 100 million euro threshold represents 2% of the group’s revenue excluding other income and 0.4% of the group’s total balance sheet at end-2025. The materiality analysis is managed by the Corporate Commitment Department. It relies on the managers of topical areas for the formulation and rating of IROs. They call on experts as needed. They may also call on external firms. The executive committee and the Board of directors, through the audit and ethics committee, review the methodology applied, the material IROs and the content of the sustainability report arising from material sub-topics. The IROs, as well as the bases for establishing the materiality analysis (Orano scope, value chain, etc.), will be reviewed once a year by the Commitment Department and business line managers as part of the preparation of the sustainability statement. The materiality analysis will be updated in the event of a significant change in the group’s scope, its value chain or its operating conditions (social, regulatory, etc.). 4.1.5.3 Other disclosure requirements covered by the sustainability statement In its summary table in Section 4.5.1, Orano discloses all the indicators disclosed within this sustainability statement. The results relating to the progress of its Engagement roadmap are presented in Chapter 1. The list of data points provided for in the cross-cutting and topical standards required by other legislative acts of the Union are presented in Section 4.5.2. 4.1.5.4 Information on non-material topics The result of the materiality analysis shows non-material topics that are not addressed in this sustainability statement. This is the result of the group’s choice of materiality threshold and a prioritization of issues. However, all of these topics remain covered by the group beyond the regulatory minimums. Energy [E1] The “Energy” sub-topic does not emerge as material from the double materiality analysis, particularly from a financial point of view, due to its low share in operating costs. Energy-related impacts are addressed through other issues: contribution to greenhouse gas emissions or the opportunity for new markets in “Climate change mitigation [E1]” and the importance of energy for society in “Continuity and cost of energy for the citizens [S4]”. Pollution of air, water, and soil during operation [E2] The materiality analysis concluded that the sub-topic of “Air, water and soil pollution from operations (excluding accidental spills)” was not material, due to the limited impact, localized and controlled by strict discharge authorizations. The prevention and reduction of pollution on industrial sites is managed from the design stage, through the preparation of a systematic or regulatory environmental impact study. This study identifies potential sources of pollution related to the activity and, if necessary, helps implement preventive and corrective measures. Orano devotes considerable resources to reducing and monitoring chemical and radioactive releases. At the same time, it ensures that the environment is continuously monitored. Orano performs over 100,000 measurements and analyses annually on samples taken at some 1,000 locations to monitor the environment around its sites. The results of these analyses are in-depth environmental assessments of the impacts of discharges into the air, water, and waste. They can be consulted on the Orano website in the site’s annual information reports drafted in accordance with Article L. 125-15 of the French Environmental Code for regulated nuclear facilities (INB) (Orano la Hague, Orano Melox, Orano Tricastin and Orano Malvési), as well as in the Orano Mining CSR report for mining sites. Orano, on the other hand, considered the potential impact on the environment and people of an accidental spill (under ESRS E2) or a chemical or radiological accident (under ESRS S3).
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