EDF took account of this OEF and carried out reassessment studies of the operation of its facilities in air and water temperature conditions more severe than those initially included in the design. In parallel with development of these “extreme heat” baseline safety requirements, EDF modified its installations (such as the increase in the capacity of certain heat exchangers) and implemented operating practices optimising the cooling capacity of the equipment and improving the resistance of equipment susceptible to high temperatures. During the reactors’ periodic safety reviews, EDF takes account of climate change and is continuing to improve the capacity of its installations to deal with the effects of a heat wave. The capacity of certain cooling systems for equipment required for the nuclear safety case will in particular be improved. EDF has also initiated a climatic monitoring programme to anticipate climate changes which could compromise the temperature hypotheses adopted in its baseline requirements. As for the other hazards, ASN asks EDF to learn the lessons from the various heatwave events, along with their effects on the installations. GRAPH Trend in the number of significant events rated on the INES scale in the EDF Nuclear Power Plants 1 0 200 400 600 800 1,000 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 INES level 0 INES level 1 INES level 2 This graph includes data for the Fessenheim NPP up until 2020. 1 82 734 75 690 1 67 629 79 638 4 65 766 82 793 3 91 840 1 96 838 1 84 851 87 750 2 70 792 GRAPH Trend in the number of significant events by domain in the EDF Nuclear Power Plants 2 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 Safety Radiation protection Environment 0 200 400 600 800 1,000 This graph includes data for the Fessenheim NPP up until 2020. 93 120 689 112 116 640 79 109 586 77 122 583 98 130 688 75 169 686 83 171 745 61 174 740 68 158 762 56 136 687 46 140 714 ASN Report on the state of nuclear safety and radiation protection in France in 2023 303 • 10 • The EDF Nuclear Power Plants 10 05 15 08 11 04 14 06 07 13 AP 03 02 09 12 01
RkJQdWJsaXNoZXIy NjQ0NzU=