ASN Report 2017

219 ASN report on the state of nuclear safety and radiation protection in France in 2017 Chapter 08  - Regional overview of nuclear safety and radiation protection Centre-Val de Loire The Orléans division regulates nuclear safety, radiation protection and the transport of radioactive substances in the 6 départements of the Centre-Val de Loire region. I n 2017, ASN carried out 130 nuclear safety and radiation protection inspections: 98 inspections of the nuclear installations on the EDF sites of Belleville-sur-Loire, Chinon, Dampierre-en-Burly and Saint-Laurent-des-Eaux, and 39 inspections in small-scale nuclear activities in the Centre-Val de Loire region. ASN carried out 71 days of labour inspections in the nuclear power plants. Eight significant events rated level 1 on the INES scale were notified by the licensees of the EDF nuclear installations in the Centre-Val de Loire region in 2017. In small-scale nuclear activities, 8 significant events of level 1 and one of level 2 on the ASN-SFRO scale were notified in the Centre- Val de Loire region. On the basis of the inspections conducted by the Orleans division, ASN inspectors drew up one violation report which was submitted to the competent Public Prosecutor. The installations and activities to regulate comprise: ཛྷ ཛྷ BNIs: -- the Belleville-sur-Loire NPP (2 reactors of 1,300 MWe); -- the Dampierre-en-Burly NPP (4 reactors of 900 MWe); -- the Saint-Laurent-des-Eaux site: the NPP (2 reactors of 900 MWe) in operation, as well as the 2 French Gas-Cooled Reactors (GCR) undergoing decommissioning and the irradiated graphite sleeve storage silos; -- the Chinon site: the NPP in operation (4 reactors of 900 MWe), the 3 French GCRs undergoing decommissioning, the Irradiated Material Facility (AMI) and the Inter- Regional Fuel Warehouse (MIR); ཛྷ ཛྷ small-scale nuclear activities in the medical sector: -- 8 external-beam radiotherapy departments; -- 3 brachytherapy departments; -- 10 nuclear medicine departments; -- 35 centres performing fluoroscopy- guided interventional procedures; -- 43 computed tomography scanners; -- some 2,700 medical and dental radiology devices; ཛྷ ཛྷ small-scale nuclear activities in the industrial and research sectors: 10 industrial radiography companies, including 4 gamma radiography contractors, about 330 industrial, veterinary and research radiography devices. 1. Assessment by domain 1.1 The nuclear installations Belleville-sur-Loire nuclear power plant ASN considers that the performance of the Belleville-sur- Loire NPP in radiation protection is on the whole in line with the general assessment of EDF, but its performance in safety and the environment has regressed. With regard to nuclear safety, there are still many significant events resulting from a lack of rigour in the management and monitoring of the facilities, and the improvement that was tangible in the first half of the year failed to be maintained. Consequently, in September 2017 ASN decided to place the Belleville-sur-Loire NPP under tightened monitoring. This decision was motivated firstly by recurrent deficiencies in the identification and analysis of the consequences of the anomalies affecting certain items of equipment important to safety. ASN also observed the apparent degraded condition of several items of equipment after successive postponements of maintenance operations. ASN will closely monitor application of the action plan put in place by EDF. With regard to the environment, and despite a positive organisational assessment, there are still deviations in the application of the rules concerning the containment of liquids and control of the discharge measuring facilities. NPP management has started taking measures to overcome the deteriorated state of certain facilities that can have an impact