Abstracts ASN Report 2019

ņłĿňŇļłŁє ļŁĶĸ ŇĻĸŁё ĻĴņ ķĸĶļķĸķ Ňł ŅĸŃĴļŅ ŇĻĸņĸ ŊĸĿķņє This subject is presented in a specific thematic sheet (see the introduction to this report). ASN also issued a favourable opinion on the processing proposed ĵŌ Ňł ŅĸņŇłŅĸ ŇĻĸ ĶłŁĹłŅŀļŇŌ łĹ ŇĻĸ łŇĻĸŅ ŊĸĿķņё ļķĸŁŇļĹļĸķ ŇĻĸ pre-conditions for performance of these operations and checked compliance with these conditions. ASN also initiated an analysis of the deviations which affected the stress-relieving heat treatment of the connection welds on ŇĻĸ ĴŁķ ŃŅĸņņňŅļņĸŅ ĶłŀŃłŁĸŁŇņ ĶĴŅŅļĸķ łňŇ ļŁ ŅĴŀĴŇłŀĸѡņ Saint-Marcel plant. • !ƺȸɎǣǔǣƬƏɎǣȒȇɀ Ȓǔ ƬȒȅȵǼǣƏȇƬƺ ǔȒȸ Ɏǝƺ IǼƏȅƏȇɮǣǼǼƺ 0¨« ȸƺƏƬɎȒȸ zɖƬǼƺƏȸ ¨ȸƺɀɀɖȸƺ 0ȷɖǣȵȅƺȇɎ ٢z¨0٣ At the end of the design and manufacturing checks and if they prove to be satisfactory in the light of the regulatory requirements, ASN issues certification of NPE compliance. During the course łĹ ӅӃӄӊׇĴŁķ ӅӃӄӋё ļņņňĸķ ŇĻĸ ʼnĸŅŌ ĹļŅņŇ ĶĸŅŇļĹļĶĴŇĸņє Ļĸ ĶłŀŃĿļĴŁĶĸ ĸʼnĴĿňĴŇļłŁ łĹ ŇĻĸ łŇĻĸŅ łŅ ĿĸʼnĸĿ ӄׇŁňĶĿĸĴŅ assemblies will continue in 2020. ASN also authorised the commissioning and operation of the ŅĸĴĶŇłŅ ʼnĸņņĸĿ ļŁ ӅӃӄӋє א ِ׏׏ِ ב ɀɀƺɀɀȅƺȇɎ Ȓǔ ƬȒȇɀɎȸɖƬɎǣȒȇً ɀɎƏȸɎ ٮ ɖȵ ɎƺɀɎɀ ƏȇƳ ȵȸƺȵƏȸƏɎǣȒȇ ǔȒȸ ȒȵƺȸƏɎǣȒȇ Ȓǔ Ɏǝƺ IǼƏȅƏȇɮǣǼǼƺ 0¨« ȸƺƏƬɎȒȸ Generally speaking, ASN considers that the organisation put ļŁŇł ŃĿĴĶĸ ĹłŅ ŇĻĸ ĿĴŀĴŁʼnļĿĿĸ ӆׇ ŅĸĴĶŇłŅ ņŇĴŅŇіňŃ ŇĸņŇņ ĴŁķ ŃŅĸŃĴŅĴŇļłŁ ĹłŅ ļŇņ łŃĸŅĴŇļłŁ ŊĸŅĸ ņĴŇļņĹĴĶŇłŅŌ ļŁ ӅӃӄӌє łŊĸʼnĸŅё ŀňņŇ ņňŃŃĿĸŀĸŁŇ ļŇņ ŃŅłĺŅĴŀŀĸ łĹ ĴķķļŇļłŁĴĿ inspections carried out as part of the equipment quality review and perform them rigorously. In addition, despite mobilising resources and significantly improving the organisation of the ņŇĴŅŇіňŃ ŇĸņŇņё ŀňņŇ ļŀŃŅłʼnĸ ŇĻĸ ŀĴŁĴĺĸŀĸŁŇ łĹ ŇĻĸ հ configurations and the tests performed on the temporarily modified installations. It must also improve the utilisation of the accrued experience feedback and the implementation of the ŅĸņňĿŇļŁĺ ĶłŅŅĸĶŇļʼnĸ ĴĶŇļłŁņє ļŁĴĿĿŌё ŀňņŇ ĸŁņňŅĸ ĴŃŃĿļĶĴŇļłŁ of a strategy for the conservation, maintenance and testing of the equipment and structures present on the construction site until the reactor is commissioned. In 2020, ASN will continue its oversight of these topics and will also ensure that the main ņĸĶłŁķĴŅŌ ņŌņŇĸŀņ ĴŅĸ ŅĸņŇłŅĸķ Ňł ĶłŁĹłŅŀļŇŌє ׇ א ِ׏ א ³ɎɖƳǣƺɀ Ȓȇ ȸƺƏƬɎȒȸɀ Ȓǔ Ɏǝƺ ǔɖɎɖȸƺ • 0¨« אژ Ł ŃŅļĿ ӅӃӄӉё Ĵņľĸķ ĹłŅ ļŇņ łŃļŁļłŁ łŁ ŇĻĸ ņĴĹĸŇŌ łŃŇļłŁņ for a PWR reactor project called EPR New Model (EPR NM), being ķĸʼnĸĿłŃĸķ ĵŌ ĴŁķ ŅĴŀĴŇłŀĸє This project aims to meet the general safety objectives for third- generation reactors. It aims to integrate the lessons learned from the design, construction and commissioning of the EPR reactors at ĿĴŀĴŁʼnļĿĿĸ ӆё ĿľļĿňłŇł ӆё ĴļņĻĴŁ ӄׇĴŁķ ӅׇĴŁķ ļŁľĿĸŌі łļŁŇ ё along with operating experience feedback from existing reactors. In addition, the design of this reactor will be incorporating all the ĿĸņņłŁņ ĿĸĴŅŁĸķ ĹŅłŀ ŇĻĸ ňľňņĻļŀĴ ĴļļĶĻļ ĴĶĶļķĸŁŇє Ļļņ more specifically entails reinforcing the design against natural ĻĴōĴŅķņ ĴŁķ ĶłŁņłĿļķĴŇļŁĺ ŇĻĸ ļŁķĸŃĸŁķĸŁĶĸ łĹ ŇĻĸ ļŁņŇĴĿĿĴŇļłŁ and the site in an accident situation (with or without core melt) until such time as the off-site resources can intervene. ASN examined the Safety Options Dossier (DOS) for the EPR NM with the support of IRSN, taking account of the recommendations łĹ ňļķĸ łє ӅӅׇłŁ ķĸņļĺŁє Ň ŇĻĸ ŅĸńňĸņŇ łĹ ё ŇĻĸ ŀĸŇ ļŁ ĴŁňĴŅŌ ӅӃӄӋׇŇł ĸŋĴŀļŁĸ ŇĻļņ ķłņņļĸŅє Ł ӅӃӄӋё ņĸŁŇ ļŇņ ķĸĶļņļłŁ Ňł ňŃĺŅĴķĸ ŇĻĸ ŇĸĶĻŁļĶĴĿ configuration of the EPR NM to a new version, called EPR 2. Ł ӄӉׇ ňĿŌ ӅӃӄӌё ŇĻňņ ŃňĵĿļņĻĸķ ļŇņ łŃļŁļłŁ łŁ ŇĻĸ ņĴĹĸŇŌ łŃŇļłŁņ ŃŅłŃłņĸķ ĹłŅ ŇĻĸ ŅĸĴĶŇłŅ ĴŁķ ļŇņ ׇӅ configuration upgrade. ASN considers that the general safety objectives, the safety baseline requirements and the main design options are on the whole satisfactory. ASN’s opinion identifies the subjects to be considered in greater depth prior to submitting a reactor creation authorisation application. Additional justifications are in particular needed on the break preclusion approach for the main primary and secondary piping, the approach for dealing with ĻĴōĴŅķņё ĹļŅĸ ĴŁķ ĸŋŃĿłņļłŁ ļŁ ŃĴŅŇļĶňĿĴŅё ĴŁķ ŇĻĸ ķĸņļĺŁ ĶĻłļĶĸņ ĹłŅ certain safety systems. In any creation authorisation application ĹłŅ Ĵ ŅĸĴĶŇłŅё ŊļĿĿ ĻĴʼnĸ Ňł ņŃĸĶļĹŌ ŇĻĸ ĴķķļŇļłŁĴĿ ņŇňķļĸņ ĴŁķ justifications provided in response to this opinion, as well as the resulting modifications to the safety options. • ³ȅƏǼǼ xȒƳɖǼƏȸ «ƺƏƬɎȒȸɀ Several Small Modular Reactor (SMR) projects are currently being developed around the world. These are reactors with a ŃłŊĸŅ łĹ Ŀĸņņ ŇĻĴŁ ӆӃӃׇ ĸё ĵňļĿŇ ļŁ Ĵ ĹĴĶŇłŅŌ ĴŁķ ķĸĿļʼnĸŅĸķ Ňł ŇĻĸļŅ ļŁņŇĴĿĿĴŇļłŁ ņļŇĸє ŅĸŁĶĻ ŃŅłĽĸĶŇ ļŁʼnłĿʼnļŁĺ ё ĸĶĻŁļĶĴŇłŀĸё ŅĸŁĶĻ ĿŇĸŅŁĴŇļʼnĸ ŁĸŅĺļĸņ ĴŁķ ŇłŀļĶ Energy Commission (CEA) and Naval Group is currently at the preliminary design stage. ASN considers that these projects are opportunities to develop reactors with significant nuclear safety improvements. • JƺȇƺȸƏɎǣȒȇ Xà ȸƺƏƬɎȒȸɀ ļŁĶĸ ӅӃӃӃё ļŁ ŃĴŅŇŁĸŅņĻļŃ ŊļŇĻ ĴŁķ ŅĴŀĴŇłŀĸё ĻĴņ been examining fourth-generation reactors, notably within the Ѣ ĸŁĸŅĴŇļłŁ ѣ ŁŇĸŅŁĴŇļłŁĴĿ łŅňŀ Ҏ ҏє ļʼnĸŁ ŇĻĴŇ ѡņ Astrid project has been abandoned, the industrial deployment of Generation IV reactors cannot be envisaged before the end of this century. ASN inspection on the Flamanville EPR construction site on the subject of non-destructive testing on completion of production Ȓǔ Ɏǝƺ ɯƺǼƳɀ ǔȒȸ Ɏǝƺ ȵǣȵǣȇǕ Ȓǔ Ɏǝƺ àਠƏȇƳ «0 ɀɵɀɎƺȅɀ ٫ ȵȸǣǼ א ׎׏ ז 310 ASN Report on the state of nuclear safety and radiation protection in France in 2019 ׏׎ ٲ THE EDF NUCLEAR POWER PLANTS