In 2022, the resolutions governing the intake, consumption of water and discharges into the environment and the limits on effluent discharges from the Bugey and Dampierre-en-Burly NPPs were updated by ASN. Finally, every year, the licensee of each NPP sends ASN an annual environmental report which notably contains a summary of the intakes from and discharges into the environment, any impacts they may have, and any significant events which have occurred. The impact of thermal discharges from the NPPs NPPs discharge hot effluents into watercourses or the sea, either directly, from those NPPs operating with “once-through” cooling, or after cooling of these effluents in cooling towers, enabling some of the heat to be dissipated to the atmosphere. Thermal discharges from NPPs lead to a temperature rise between the points upstream and downstream of the discharge which, depending on the reactors, can range from a few tenths of a degree to several degrees. These thermal discharges are regulated by ASN resolutions. Since 2006, provisions have been incorporated into the ASN resolutions for advance definition of the operations of NPPs in exceptional climatic conditions leading to significant warming of the watercourse. These special provisions are however only applicable if the security of the electricity grid is at stake. Waste management In compliance with the provisions of the Environment Code, EDF carries out waste sorting at source, differentiating in particular between waste from nuclear zones and other waste. For each installation, EDF produces a summary of the management of this waste, in particular presenting a description of the operations which are the cause of production of the waste, the characteristics GRAPH Trend in the number of significant events rated on the INES scale in the EDF Nuclear Power Plants between 2012 and 2022 1 0 200 400 600 800 1,000 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 935 936 837 830 817 765 697 717 835 875 934 INES Level 0 INES Level 1 INES Level 2 This Graph includes data from the Fessenheim NPP until 2020. GRAPH Trend in the number of significant events by domain in the EDF Nuclear Power Plants between 2012 and 2022 2 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 975 988 919 902 868 774 782 916 879 930 999 ESS ESR ESE 0 200 400 600 800 1,000 This Graph includes data from the Fessenheim NPP until 2020. 302 ASN Report on the state of nuclear safety and radiation protection in France in 2022 • 10 • The EDF Nuclear Power Plants 10
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