What new measures is EDF planning? EDF plans to install a water make-up system via a diversified ultimate water source, as well as a supplementary cooling system to improve the safety of the spent fuel pool. EDF has extended the scope of accident situations analysed with respect to the spent fuel pool. As result of these analyses, it has defined a new operational strategy for cooling the fuel assemblies in certain situations. Finally, EDF has provided justification that cooling of the fuel assemblies in the spent fuel pool would not be jeopardised by an accidental crash involving a light aircraft. The additional measures planned by EDF will constitute major improvements to the safety of the spent fuel pools. These new measures, most of which relate to the «hardened safety core», will significantly reduce the risk of fuel assemblies no longer being cooled under water and, in the majority of the situations considered, will enable a final postaccident state to be reached without pool boiling. For situations in which it would not be possible to achieve such a state using the cooling system or the supplementary cooling system, EDF must define measures to improve prevention of the associated accidents, as well as postaccident management measures. These different points are subject to requirements in ASNR’s decision. The results of the studies conducted by EDF, and the planned modifications, supplemented by compliance with the requirements set out by ASNR, will enable the objectives of this periodic safety review to be met. The ASNR’s decision Conditions for the continued operation of 1,300 MWe reactors beyond 40 years • 17
RkJQdWJsaXNoZXIy NjQ0NzU=