LES ACTIVITÉS NUCLÉAIRES : RAYONNEMENTS IONISANTS ET RISQUES POUR LA SANTÉ ET L’ENVIRONNEMENT * Given the complexity of these operations, an amendment to Article L. 542-1-3 of the Environment Code will be required. BNI 33 UP2-400 BNI 38 STE 2 BNI 80 HAO Orano La Hague OPERATION AND DESCRIPTION CHALLENGE NEXT KEY STEPS ASNR OBSERVATIONS Decommissioning of the “High Activity Dissolution Extraction” unit (HADE) Short-term safety with respect to the seismic hazard Active commissioning of the DFG building (French acronym for “fine granulometry waste”) for retrieval of decladding waste (scheduled for 2028) • Construction of the DFG building ran smoothly in 2025. • The end of decommissioning is scheduled for 2046. • The decommissioning priority for this facility is given to the expeditious retrieval of the legacy waste, which represents a major risk for safety given the large radiological inventory and the fragility of current storage conditions. • Clean-up and inspection of the premises were completed at the end of 2025, and dismantling is scheduled to start at the beginning of 2026 and be completed by the end of 2027. Decommissioning of the “High Activity Fission Product” unit (HAPF) Rinsing and effluent treatment operations on the HAPF unit solvent tanks (scheduled for before the end of 2031) Decommissioning of the “Medium Activity Plutonium” unit (MAPu) Short-term safety of neighbouring units with respect to the seismic hazard Dismantling of upper storeys to limit risks to the units in operation (scheduled before end of 2028) Retrieval and packaging of the waste from silo 130 • Short-term safety of the silo with respect to containment or a seismic hazard risk • Packaging within time frames compatible with commissioning of the Cigéo deep geological repository • End of retrieval of solid GCR waste (ILW-LL) • End of retrieval of active effluents and sludge • End of packaging of the ILW-LL waste • The end of decommissioning is scheduled for 2043. • The retrieval of all the waste from silo 130 is scheduled for 2035, bearing in mind that retrieval began in February 2020, but technical malfunctions made technical adjustments necessary and a 3x8 shift for the operating teams to ensure that solid waste is taken back by the end of the year 2030. • The sludge and effluents retrieval scenario has been determined. Studies into the possibility of retrieving the effluents along with the solid GCR ILW-LL waste are continuing. • Packaging in definitive packages that meet the acceptance criteria for a deep geological repository is pushed back by several decades(*). Retrieval and packaging of the sludge stored in silos of Effluent Treatment Station No. 2 – STE2 (“Sludge retrieval and packaging” project – RCB) Safety of the silos with respect to containment and a seismic hazard • Construction and commissioning of a new storage facility • Development of equipment for retrieving sludge and transferring it to the new storage facility • Definition of the definitive sludge packaging process • The new sludge retrieval and management strategy was revised in 2022 and validated in April 2023. Orano has undertaken to build new silos to guarantee the sludge storage conditions. The beginning of sludge retrieval has been postponed to 2037 and the end of retrieval by 2043. • Packaging in definitive packages acceptable in a deep geological repository is pushed back by several decades(*). Retrieval and packaging of waste from the HAO silo and Organised Storage of Hulls (SOC) pools • Safety of the silo with respect to containment, a seismic hazard or resistance to an aircraft crash • Packaging within time frames compatible with commissioning of the Cigéo deep geological repository • Commissioning of the ILW-LL solid waste and active effluents retrieval unit • End of packaging of the waste • In view of the difficulties associated with operation and maintenance of the planned process, the retrieval scenario was updated in 2021. • ASNR has authorised the active commissioning of the equipment. • Tests on the new retrieval and packaging equipment are still under way and will continue for several years. • Start of retrieval is now pushed back to 2032 (with margins). This deadline extension was presented to the CLI by Orano and gave rise to a deviation notification. • The end-of-packaging deadline is pushed back significantly (within the next thirty years). Partial dismantling of the filtration building Reduction of the interactions with the pools of the spent fuel elements unloading and storage facility (NPH), in the event of an earthquake Dismantling of the upper storeys of the filtration building • Completion of dismantling of the upper storeys of the filtration building is scheduled before the end of 2031. • Clean-out of the “900 cells” is scheduled for approximately 2045. • Completion of decommissioning of BNI 80 was initially scheduled in 2033. • ASNR is currently reviewing an application to modify the Decree authorising the decommissioning of BNI 80 in order to integrate both the change in scenario and slippages in the decommissioning and WRP operations. ASNR Report on the state of nuclear safety and radiation protection in France in 2025 349 11 13 12 A / Z 10 09 08 01 05 02 06 03 07 04
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