Abstracts ASN Report 2019

³ƏǣȇɎ ٮ nƏɖȸƺȇɎ ٮ Ƴƺɀ ٮ 0Əɖɴ ɀǣǼȒɀ The facility, authorised by Decree of 14 June 1971, consists of two silos whose purpose is the storage of irra- diated graphite sleeves coming from the operation of Saint-Laurent-des-Eaux A GCRs. Static containment of this waste is ensured by the concrete bunker structures of the silos, which are sealed by a steel lining. In 2010, EDF installed a geotechnical containment around the silos, reinforcing the control of the risk of dissemination of radioactive substances, which is the main risk presented by the installation. …ȵƺȸƏɎǣȒȇ Ȓǔ Ɏǝǣɀ zX ژ ٢ zX גוژ ٣ ǣɀ ǼǣȅǣɎƺƳ ɎȒ ɀɖȸɮƺǣǼǼƏȇƬƺ and maintenance measures (inspections and radiological monitoring of the silos, checking there is no water ingress, checking the relative humidity, the dose rates in the vicinity of the silos, the activity of the water table, and monitoring the condition of civil engineering structures). These actions are carried out satisfactorily on the whole. In the context of its new decommissioning strategy for the GCRs, EDF announced in 2016 its decision to start removing the graphite sleeves from the silos without waiting for the graphite waste disposal route to become available. To this end, EDF envisages creating a new graphite sleeve storage facility on the Saint-Laurent-des-Eaux site. EDF has postponed by one year –that is to say until the end of 2021– submission of the decommissioning file which will take into account the emptying, post-operational clean-out and demolition of the current existing. ASN Report on the state of nuclear safety and radiation protection in France in 2019 51 REGIONAL OVERVIEWOF NUCLEAR SAFETY AND RADIATION PROTECTION !0zÁ«0 ٳ à n (0 n…X«0