Orano - Annual Activity Report 2025 191 SUSTAINABILITY STATEMENT 4 Environmental information Radioactive waste result The proportion of radioactive waste produced abroad represents only 20% of the total radioactive waste produced this year. The change is due to the deconsolidation of the Nigerien subsidiary Cominak (1), which was undergoing restructuring when operational control was lost. Mining waste contains only radionuclides of natural origin and is classified as very low-level waste (VLLW). Concerning VLLW and LMLW-SL waste in France, the quantity produced increased by 20% compared to 2024. For VLLW facilities, this is due to two components: the failure to predict a batch of 1,100 m3 produced during the decommissioning of facilities and an increase in VLLW waste from the operation of facilities upstream of the cycle. With regard to LMLW-SL waste, it was necessary to catch up on shipments of certain types of waste following a technical failure of equipment used in the LMLW-SL waste storage facility in la Hague in 2024. Lastly, the quantities of HL-LLW and ML-LLW packages produced by Orano in connection with the operation of the used fuel processing and recycling facilities are very low. The HL-LLW share remained stable. The ML-LLW share increased due, on the one hand, to a rise in the production of cemented waste from operations and, on the other hand, to the production of bitumen drums, which offset the lack of production in the previous year. (1) For more information on the situation in Niger, see Section 2.1.2.1 Mining. RADIOACTIVE WASTE RESULTS [E5-5] Indicators (GRI 306-4) ESRS 2025 2024 2023 Reference 2019 Total quantity of radioactive waste produced during the year (in m3) E5-5>39 13,610 234,817 n/a n/a Of which quantity of radioactive waste sent to Andra centers (VLLW and LMLW-SL) (in m3) E5-5>39 10,537 8,738 n/a n/a Of which quantity of radioactive waste management of MLW-LL and HLW categories (in m3) E5-5>39 253 159 n/a n/a Of which quantity of radioactive waste produced by the Mining BU outside France (in m3) E5-5>39 2,820 225,920 n/a n/a n/a: not applicable. The indicators required by the CSRD Directive are published from the 2024 financial year. Methodological clarification: The radioactive waste produced by Orano is waste produced in France and abroad. All data are expressed in m3. In France, the radioactive waste produced corresponds to waste: • shipped to storage facilities in operation (CIRES and CSA); • stored on the sites and intended for the future storage centers under study (LLW-LL center and CIGEO centers). For reasons of data availability for 2025 and by regularity of activity, the quantities of radioactive waste casks of categories MLW-LL and HLW produced are estimated on the basis of data for 2024. The following are excluded from the calculation: • waste stored on sites for which a channel has not yet been defined because it represents a negligible quantity produced each year; • LLW-LL category waste because it is not produced by Orano; • waste sent for incineration at Centraco because incineration is a process prior to storage. Internationally, the radioactive waste produced corresponds to the waste produced by the Orano Mining sites. Excluded from the calculation are waste produced on behalf of foreign customers not belonging to Orano (Germany) and waste produced by Orano NPS in the United States because they represent a negligible quantity (less than a few cubic meters per year). The indicators have been recalculated to retroactively take into account the deconsolidation in 2024 of the Nigerien subsidiary Somaïr. Financial effects of radioactive waste Orano is working to quantify the financial effects of risks and opportunities concerning radioactive waste. The group plans to publish these within two years, in accordance with the transitional provisions provided for by the standard. Waste reduction actions and radioactive substance recovery projects are likely to result mainly in lower operating costs and higher revenue for the group. The financial effects related to the decommissioning of nuclear facilities and the recovery of waste are presented in Section 4.2.4.4.
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