Abstracts ASN Report 2019

by BNIs (see chapter 3, point 4.1). The laws and regulatory texts concerning protection of the environment and applicable to ŅĸŁĶĻ ņ ĶłŀŃŅļņĸ ĺĸŁĸŅļĶ ŇĸŋŇņё ŀĴļŁĿŌ ŇĻĸ ŁʼnļŅłŁŀĸŁŇ łķĸё ŇĻĸ ŅķĸŅ łĹ ӊׇ ĸĵŅňĴŅŌ ӅӃӄӅׇĴŁķ ŅĸņłĿňŇļłŁņ ӅӃӄӆі іӃӆӉӃׇłĹ ӄӉׇ ňĿŌ ŅĸĺĴŅķļŁĺ ŇĻĸ ĶłŁŇŅłĿ łĹ ķĸŇŅļŀĸŁŇĴĿ ĸĹĹĸĶŇņ and the impact of BNIs on health and the environment, and 2017- іӃӈӋӋׇłĹ Ӊׇ ŃŅļĿ ӅӃӄӊׇŅĸĺĴŅķļŁĺ ŊĴŇĸŅ ļŁŇĴľĸ ĴŁķ ĶłŁņňŀŃŇļłŁё effluent discharge and environmental monitoring methods for PWR nuclear power reactors, as well as regulatory texts specific to each of the NPPs: ҄ decisions setting the procedures for water intake and consumption and environmental discharges of liquid and gaseous effluents (chemical and radioactive); ҄ decisions setting the environmental discharge limits for liquid and gaseous effluents (chemical and radioactive); these decisions are approved by the Minister responsible for nuclear safety; ҄ the Orders of the Prefect authorising water intake and discharges of liquid and gaseous effluents: pre-dating November 2006, they contain binding requirements concerning the discharge procedures and limits specific to a nuclear site. In order to apply the new regulatory architecture to all the ŅĸŁĶĻ ŅĸĴĶŇłŅņё ŅĸʼnļņļłŁ łĹ ŇĻĸ łŅķĸŅņ ĻĴņ Ŀĸķ Ňł ŇĻĸŀ being repealed, with the adoption of ASN resolutions. łŅ ĸĴĶĻ ņļŇĸё ņĸŇņ ŇĻĸ ĿļŀļŇ ʼnĴĿňĸņ ĹłŅ ĸŀļņņļłŁņё ŊĴŇĸŅ intake and discharge of effluents on the basis of the best available technologies in technically and economically acceptable conditions, taking into consideration the characteristics of the installation, its location and the local environmental conditions. ASN also sets the rules concerning the control of detrimental effects and the impact of PWRs on health and the environment. These requirements are notably applicable to the management and monitoring of water intake and effluent discharge, to environmental monitoring and to information of the public and the authorities (see chapter 3, point 4.1). In setting these requirements, ASN uses operating experience feedback from all the reactors as the basis, while also taking account of operational changes (change in conditioning of systems, anti-scaling treatment, biocidal treatment, etc.) and changes to the general regulations. ļŁĴĿĿŌё ĸʼnĸŅŌ ŌĸĴŅё ŇĻĸ ĿļĶĸŁņĸĸņ ņĸŁķ ĴŁ ĴŁŁňĴĿ environmental report which notably contains a summary of the intakes from and discharges into the environment, any impacts they may have, the significant events which have occurred and the future outlook. • Áǝƺ ǣȅȵƏƬɎ Ȓǔ ɎǝƺȸȅƏǼ ƳǣɀƬǝƏȸǕƺɀ ǔȸȒȅ Ɏǝƺ z¨¨ɀ 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 these 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. • xȒȇǣɎȒȸǣȇǕ Ȓǔ ɯƏɀɎƺ ȅƏȇƏǕƺȅƺȇɎ The management of the conventional and radioactive waste produced by the NPPs falls within the general framework of BNI waste management. The legal framework for the management of waste applicable to the NPPs comprises legislative and regulatory texts of general scope, notably the Environment Code, the ŅķĸŅ łĹ ӊׇ ĸĵŅňĴŅŌ ӅӃӄӅׇĴŁķ ŅĸņłĿňŇļłŁ ӅӃӄӈі іӃӈӃӋׇłĹ Ӆӄׇ ŃŅļĿׇӅӃӄӈ ĶłŁĶĸŅŁļŁĺ ŇĻĸ ņŇňķŌ łĹ ŊĴņŇĸ ŀĴŁĴĺĸŀĸŁŇ ĴŁķ the inventory of waste produced in BNIs. Ł ĶłŀŃĿļĴŁĶĸ ŊļŇĻ ŇĻĸ ŁʼnļŅłŁŀĸŁŇ łķĸё ĶĴŅŅļĸņ łňŇ ŊĴņŇĸ sorting at source, differentiating in particular between waste from ŁňĶĿĸĴŅ ōłŁĸņ ĴŁķ łŇĻĸŅ ŊĴņŇĸє łŅ ĴĿĿ ŇĻĸ ŊĴņŇĸё ĸŋĴŀļŁĸņ the study produced by the licensee regarding waste management. This document is specific to each facility, as required by the regulations (see “References” heading on asn.fr ). This document more specifically presents a description of the operations which are the cause of production of the waste, the characteristics of the waste produced or to be produced, an estimation of the waste ŇŅĴĹĹļĶ ʼnłĿňŀĸņ ĴŁķ Ĵ ŊĴņŇĸ ōłŁļŁĺ ŃĿĴŁє In addition, every year, each site sends ASN a summary report on its production of waste and the corresponding disposal routes, a comparison with the results of previous years, a summary of the site organisation and the differences observed with respect to the management procedures specified in the waste management study, the list of significant events which have occurred and the outlook for the future. nƺɮƺǼ א ɀǣǕȇǣˡƬƏȇɎ ƺɮƺȇɎ ƏǔǔƺƬɎǣȇǕ Ɏǝƺ ƺȅƺȸǕƺȇƬɵ ƳǣƺɀƺǼ ǕƺȇƺȸƏɎȒȸ ɀƺɎɀ Ȓȇ Ɏǝƺ !ǣɮƏɖɴً JȸƏɮƺǼǣȇƺɀ ƏȇƳ ¨ƏǼɖƺǼ z¨¨ɀ A significant nuclear safety event concerning a deficiency in the earthquake resistance of the piping of the emergency diesel generator ɀƺɎɀ ǣȇ Ɏǝƺ !ǣɮƏɖɴً JȸƏɮƺǼǣȇƺɀ ƏȇƳ ¨ƏǼɖƺǼ ژ z¨¨ɀ was rated level 2 by ASN in 2019. Each reactor has two emergency diesel generator sets, which provide redundant electrical power supply to certain safety systems in the event of the loss of off-site electrical power, more particularly in the wake of an earthquake. The significant event concerns a risk of damage to the pipes owing to their potential contact with the civil engineering structures of the emergency diesel generator sets in the event of an earthquake. This damage could lead to rupture of these pipes and failure of the emergency diesel generating sets. EDF initially detected this deviation at the end of October 2018 on one of the two emergency diesel generating sets for reactors 2 and 3 of the Tricastin NPP. On 6 May 2019, EDF notified ASN that, after characterisation, it also concerned the two emergency diesel generating sets for the reactors of the Civaux, Gravelines and Paluel NPPs, as well as one of the two emergency diesel generating sets of the Fessenheim, Cruas, Saint-Laurent-des-Eaux and Nogent-sur-Seine NPPs, as well as reactor 3 of the Dampierre-en-Burly NPP, reactors 2 and 3 of the Tricastin NPP and reactor 1 of the Blayais NPP. Repairs have been made on the reactors concerned. ASN Report on the state of nuclear safety and radiation protection in France in 2019 295 ׏׎ ٲ THE EDF NUCLEAR POWER PLANTS 10