* See glossary page 21 The safety objectives of the Flamanville EPR* reactor have been taken as the reference for the continued operation of the 1,300MWe reactors beyond 40 years. On completion of the review, there will still be differences between the level of safety of the EPR* reactor and that of the 1,300 MWe reactors. This is because there are differences in design, such as the more favourable layout of the various EPR* reactor buildings, the protection of the fuel storage pool building, or the safety systems designed to cope with an accident. Nevertheless, the 4th periodic safety review* will bring the level of safety of the 1,300MWe reactors closer to that of the third generation reactors. EDF in particular plans to reinforce the electrical power and cooling supplies and the protection of the reactors against hazards of extreme intensity. The safety review will enable the radiological consequences of accidents to be reduced. It will also lead EDF to deploy safety improvements derived directly from the new generation reactors: this is for example the case with the function for stabilising and cooling the corium* inside the reactor containment*. Following their 4th periodic safety review*, will the 1,300 MWe reactors be just as safe as the new generation reactors? EDF periodically assesses possible changes in the hazards resulting from climate change and makes sure that these changes are not likely to compromise the protection of the NPPs. The 4th periodic safety review* will lead EDF to reinforce its NPPs so that they can withstand more intense climatic hazards. For example, within the framework of this review, EDF studies the ability of the installations to withstand higher temperature levels than those hitherto taken into account. Does the 4th periodic safety review of the 1,300 MWe reactors take account of climate change? PUBLIC INFORMATION AND PARTICIPATION 20 • Les cahiers de l’ASN • January 2024
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