Abstracts ASN Report 2019

!ƏɎɎƺȇȒȅ ȇɖƬǼƺƏȸ ȵȒɯƺȸ ȵǼƏȇɎ The Cattenom NPP is situated on the left bank of the river xȒɀƺǼǼƺً ژד Ǹȅ ǔȸȒȅ Ɏǝƺ ɎȒɯȇ Ȓǔ ÁǝǣȒȇɮǣǼǼƺ ƏȇƳ ׏׎ ژ Ǹȅ ǔȸȒȅ Luxembourg and Germany. XɎ ƬȒȅȵȸǣɀƺɀ ǔȒɖȸ ׏ً ב ׎׎ ژ xáƺ ¨ȸƺɀɀɖȸǣɀƺƳ áƏɎƺȸ «ƺƏƬɎȒȸɀ ٢¨á«ɀ٣ ƬȒȅȅǣɀɀǣȒȇƺƳ ƫƺɎɯƺƺȇ ׏ ژהזח ƏȇƳ ׏ חח ׏ِ «ƺƏƬɎȒȸɀ ׏ً א ً ژב ƏȇƳ ג ƬȒȇɀɎǣɎɖɎƺ zXɀ ׏ גא ً ׏ דא ً ׏ ژהא ƏȇƳ ׏ ژוב ȸƺɀȵƺƬɎǣɮƺǼɵِ Along with the Paluel and Gravelines NPPs, it is one of the world’s largest NPPs in terms of installed power. ASN considers that, despite a relative improvement in 2018, the ɵƺƏȸ א ׎׏ ژח ɯƏɀ ȅƏȸǸƺƳ ƫɵ Ə ȇƺɯ ƳƺɎƺȸǣȒȸƏɎǣȒȇ ǣȇ Ɏǝƺ !ƏɎɎƺȇȒȅ NPP’s performance with regard to operation andmaintenance, but nevertheless without the safety measurement indicators falling significantly below the average for the EDF plants. The environmental protection results revealed satisfactory control in a context marked by a heatwave. Lastly, the radiation protection results remain contrasted despite the efforts made. Several events highlighted a lack of rigour in the preparation or performance of reactor operating activities, and technical deviations or document anomalies were observed duringwork ǣȇ Ɏǝƺ ǔǣƺǼƳِ áǣɎǝ ȸƺǕƏȸƳ ɎȒȅƏǣȇɎƺȇƏȇƬƺً א ׎׏ ژח ɯƏɀȅƏȸǸƺƳ ƫɵ Ə heavy schedule, with three reactors concerned bymaintenance outages, two of which partially overlapped, mainly due to delays caused by unforeseen events during restarting. In this high industrial workload situation, weaknesses emerged in the performance of the technical actions in some maintenance activities (leading to maintenance errors) or in equipment requalifications. The ability to manage unforeseen events, and significant event reporting times and quality of analysis remain satisfactory. The licensee took stock of the drop in performance and in late 2019 initiated an action plan to improve operating rigour. áǣɎǝ ȸƺǕƏȸƳ ɎȒ Ɏǝƺ ƺȇɮǣȸȒȇȅƺȇɎً א ׎׏ ژח ɯƏɀ ȅƏȸǸƺƳ ƫɵ Ɏǝƺ effects of the heatwave, with the water level of the River Moselle remaining very low for a long period. The site thus had to resort to operation by recirculatingwater from the adjacent Mirgenbach reservoir. Furthermore, substantial volumes of water were released from the Vieux-Pré reservoir into the River Moselle to compensate for the water intakes necessary for operation of the cooling towers. No accidental discharges were reported in 2019, but two events related to the control of discharges into water and the atmosphere were recorded. áǣɎǝ ȸƺǕƏȸƳ ɎȒ ȸƏƳǣƏɎǣȒȇ ȵȸȒɎƺƬɎǣȒȇً א ׎׏ ژח ɯƏɀ ȅƏȸǸƺƳ ƫɵ deviations concerning compliance with the basic rules of access to classified areas and the control of contamination dispersion, in a context of intense activity linked to the reactor outages. This ƫƺǣȇǕ ɀƏǣƳً Ɏǝƺ ɀǣɎƺ ټ ɀ ƬȒȅȅǣɎȅƺȇɎɀȅƏƳƺ ɀǣȇƬƺ א ׎׏ ژו ɎȒ ǣȅȵȸȒɮƺ radiation protection have been widely met. Lastly, regarding occupational safety, ASN has observed a drive on the theme of control of explosive atmosphere risks and this must be continued. An inspection into the legality of the conditions of operation of foreign companies on the French territory was carried out jointly with the inspectors of the Regional unit supporting and monitoring the fight against illegal work (Uracti) of the Regional directorate for enterprises, competition, consumption, labour and employment (Direccte). This inspection detected irregularities concerning subcontractor companies during the provision of their services. !ǝȒȒɿ ȇɖƬǼƺƏȸ ȵȒɯƺȸ ȵǼƏȇɎ The Chooz NPP operated by EDF is situated in the ȅɖȇǣƬǣȵƏǼǣɎɵ Ȓǔ !ǝȒȒɿً ה ׎ ژ Ǹȅ ȇȒȸɎǝ Ȓǔ !ǝƏȸǼƺɮǣǼǼƺ ٮ xƻɿǣljȸƺɀً in the Ardennes département . The site accommodates Ɏǝƺ ȸƳƺȇȇƺɀ z¨¨ً ƬƏǼǼƺƳ !ǝȒȒɿ ً ƬȒȅȵȸǣɀǣȇǕ ȸƺƏƬɎȒȸ ژ ٢ zX ژ ׏ בה ٣ً ȒȵƺȸƏɎƺƳ ǔ ȸȒȅ ׏ ژוהח ɎȒ ׏ חח ׏ً ǔȒȸ ɯǝǣƬǝ Ɏǝƺ final shutdown and decommissioning operations were ƏɖɎǝȒȸǣɀƺƳ ƫɵ (ƺƬȸƺƺ א ׎׎ ٮו ׏ ژדחב Ȓǔ ژוא ³ƺȵɎƺȅƫƺȸ א ׎׎ ו ً ƏȇƳ Ɏǝƺ !ǝȒȒɿ ژ ژ z¨¨ً ƬȒȅȵȸǣɀǣȇǕ ɎɯȒ ׏ً דג ׎ xáƺ ȸƺƏƬɎȒȸɀ ٢ zX ژ ׏ ژחב ƏȇƳ ׏ גג ٣ً ƬȒȅȅǣɀɀǣȒȇƺƳ ǣȇ א ׎׎׏ِ «ƺƏƬɎȒȸɀ ׏ ژ ƏȇƳ ژא ǣȇ ȒȵƺȸƏɎǣȒȇ ASN considers that the performance of the Chooz B NPP with regard to nuclear safety, radiation protection and environmental protection is on the whole in line with the general assessment of EDF plant performance. With regard to nuclear safety, ASN observes that momentum driving progress has been maintained despite the context of intense activity on account of the ten-yearly outage of reactor 2. As far as operation of the reactors is concerned, particular attention must nevertheless be paid to the quality of the risk analyses relating to work interventions in periods of heightened activity. In the area of maintenance, deficiencies in spare parts procurement were the cause of several significant events. The quality of the operational documentation can be further improved. Efforts must also be made in personnel training, particularly for activities that are complex or involve several specialities. Alongside this, all the actions contributing to optimisation of worksite radiation protection, from the preliminary risk analysis through to compliance with instructions, must be improved. The licensee must moreover maintain its vigilance in the control of radiological cleanliness of the facilities and increase the rigour of individual behaviour. ASN considers that the sites organisation for environmental protection is on the whole satisfactory. It notes in particular satisfactory and prompt management of the main events in this area. Lastly, the oversight ensured through the labour inspections revealed no major nonconformities, but regularly highlighted shortcomings in the optimisation of occupational radiation protection. ASN Report on the state of nuclear safety and radiation protection in France in 2019 55 REGIONAL OVERVIEWOF NUCLEAR SAFETY AND RADIATION PROTECTION GRAND EST