CEA Cadarache BNI OPERATION AND DESCRIPTION CHALLENGE NEXT KEY STEPS ASN OBSERVATIONS BNI 54 Decommissioning of the cryogenic treatment facility for final clean-out and remediation of the structures and soils Safety of the operations with respect to the risk of dissemination of radioactive materials • Decommissioning of the cryogenic treatment process chambers. • Characterisation of the soils under the facility. ASN is currently reviewing an application to modify the Decree authorising the decommissioning of BNI 54. The decommissioning of the cryogenic treatment facility takes priority in CEA’s “DEM/Waste” strategy. It started in 2021. The end of decommissioning is scheduled for 2024 (*). BNI 56 Retrieval and packaging of the waste stored in the trenches Risk of flooding by water table upwelling • Development of packaging routes for certain particular types of waste. • Design of automated means of retrieval. The retrieval scenario for the waste in the trenches is to be transmitted to ASN at the beginning of 2024. Retrieval and packaging of all the intermediate level bulk waste present in the old pits (“vrac MI” – bulk IL – project) Safety of the pits containing waste with respect to a seismic hazard • Construction of new buildings and commissioning of an entirely automated retrieval process requiring substantial preliminary operations. • Definition of the definitive packaging process. ASN is currently examining the decommissioning file. The “vrac MI” project is at the detailed design study stage. The “ATC” project is at the preliminary design study stage. Retrieval and packaging of all the waste present under the hangars (“ATC” project) Safety of the hangars containing waste with respect to a seismic hazard * Deadline as presented in the last file subject to public inquiry or the deadline stipulated by ASN. CEA Fontenay-aux-Roses BNI OPERATION AND DESCRIPTION CHALLENGE NEXT KEY STEPS ASN OBSERVATIONS BNI 165 Packaging of the ILW-LL waste in PETRUS drums and characterisation of the waste from the decommissioning of the PETRUS unit Access to the contaminated silos under the PETRUS unit • Construction of the new Waste transfer and packaging enclosure (ETCB). • Development work in order to accept and remove the waste drums from Decommissioning of the equipment of building 18 (EDB). ASN is currently examining an application to modify the decrees authorising the decommissioning of BNIs 165 and 166, for which some deadlines have already expired. In view of the numerous technical and organisational difficulties, particularly regarding the knowledge of the initial state of the shielded cells containing legacy waste, the end-of-retrieval deadline will probably be pushed back by several decades. The end of decommissioning was scheduled for 2017 (*) and 2018 (*) for BNIs 165 and 166 respectively. BNI 166 Retrieval of waste stored in the pits of building 58 of BNI 166 Retrieval of waste to allow decommissioning of the facilities situated in a highly urbanised area • Construction of the new Measuring and conditioning equipment (EMC). * Deadline as presented in the last file subject to public inquiry or the deadline stipulated by ASN. ASN Report on the state of nuclear safety and radiation protection in France in 2023 355 • 14 • Decommissioning of Basic Nuclear Installations 14 05 15 08 11 04 06 07 13 AP 03 10 02 09 12 01
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