Abstracts ASN Report 2019

Reactor A undergoing decommissioning The reactor vessel decommissioning work continued in 2019, culminating in the packaging of the reactor vessel head and its shipping to the Aube disposal centre. On a more general note, ASN considers that the licensee must make progress in the areas of radiation protection, the monitoring of service providers and the environment. In the area of radiation protection, providing for the risk of alpha particle contamination is a major challenge for the site. A surge in the cases of on-site contamination was observed in 2019. These findings were made in particular during labour inspection missions on the decommissioning worksites. The licensee must make particular efforts to improve the situation in this respect, and that also includes the monitoring of service providers. With regard to the environment, ASN considers that the licensee must be particularly attentive to ensuring compliance with waste disposal routes. Iƺɀɀƺȇǝƺǣȅ ȇɖƬǼƺƏȸ ȵȒɯƺȸ ȵǼƏȇɎ The FessenheimNPP comprises two PWRs, each with a unit ȵȒɯƺȸ Ȓǔ ח ׎׎ ژ xáƺِ XɎ ǣɀ ɀǣɎɖƏɎƺƳ ׏ِ ژד Ǹȅ ǔȸȒȅ Ɏǝƺ JƺȸȅƏȇ ƫȒȸƳƺȸ ƏȇƳ ƏƫȒɖɎ ב ׎ ژ Ǹȅ ǔȸȒȅ ³ɯǣɎɿƺȸǼƏȇƳِ Áǝƺ ɎɯȒ ȸƺƏƬɎȒȸɀ ɯƺȸƺ ƬȒȅȅǣɀɀǣȒȇƺƳ ǣȇ ׏ ژווח ƏȇƳ ɯǣǼǼ ƫƺ ƳƺǔǣȇǣɎǣɮƺǼɵ ɀǝɖɎ down in 2020. ASN considers that the nuclear safety performance of the Fessenheim NPP remains satisfactory, as much in the operation of the reactors as in the implementation of the facility maintenance programmes; the facility is situated above the national average in the areas of safety and the environment, and in the average for radiation protection. Áǝɖɀً ǔȒǼǼȒɯǣȇǕ Ə ǕȒȒƳ ɵƺƏȸ א ׎׏ ז ً ȒȵƺȸƏɎǣȒȇ ǣȇ א ׎׏ ژח ȸƺɮƺƏǼƺƳ a number of events related to the reliability of maintenance interventions and operational control, but did not call into question the generally positive judgement of ASN. The good results in the number of reactor trips indicate the continued rigour of prevention actions in this respect. The site also displays excellent performance in the off-site and on-site transport of radioactive substances. The site’s organisation for the deployment of the On-site Emergency Plan (PUI) is found to be robust, and the responsiveness of the response teams and the personnel in charge of deploying the local emergency resources was noted very positively during the ASN inspections. ³z ȒƫɀƺȸɮƺƳ ɀƺɮƺȸƏǼ ƺɮƺȇɎɀ ǣȇ א ׎׏ ژח ɎǝƏɎ ǣȇƳǣƬƏɎƺ Ə ȸƺǼƏɎǣɮƺ weakness in the site’s management of the fire risk, such as with configuring the systems, monitoring the fire protection equipment, or the capacities of the response resources present on the site. However, no deviations were observed with regard to fire permits, sectorisation or the fire loads, which appear to be well managed. Áǝƺ ȅƏǣȇɎƺȇƏȇƬƺ ȵȸȒǕȸƏȅȅƺ ǔȒȸ א ׎׏ ژח ɯƏɀ ȸƏɎǝƺȸ ȵƏȸɎǣƬɖǼƏȸً with two reactor shutdowns for maintenance outages, scheduled belatedly due to the postponement of the initially planned final shutdown date, and with worksites adapted to the context of the forthcoming closure. This programme was carried out satisfactorily. ASN noted the strong determination of the site to maintain the facilities in exemplary condition, with a good degree of involvement of the personnel and management in the maintenance and condition of the facilities. With regard to environmental management, there were no events that called into question the generally positive judgement of the preceding years. nƏɀɎǼɵً ǣȇ Ɏǝƺ ƏȸƺƏ Ȓǔ ȸƏƳǣƏɎǣȒȇ ȵȸȒɎƺƬɎǣȒȇً א ׎׏ ژח ɯǣɎȇƺɀɀƺƳ Ə few events concerning accesses to classified areas and the control of the risk of contamination dispersion. This latter point reveals a potential weakness in the atypical decontamination activities, which will require particular vigilance in the context of the site’s future activities. A few deviations were noted with respect to the fire regulations for worker safety, but the site’s occupational safety performance remains satisfactory. 56 ASN Report on the state of nuclear safety and radiation protection in France in 2019 REGIONAL OVERVIEWOF NUCLEAR SAFETY AND RADIATION PROTECTION GRAND EST