Complementary-safety-assessments-french-nuclear-safety

- 46 - pressurisation to prevent the possible transfer of contamination. The sites will focus on the selfsufficiency of the BDS. Emergency management premises: fall-back centre The sites have a fall-back centre located off the site, generally at a distance of more than 5 km, and not under the prevailing winds. The purpose of this point is to accommodate the personnel in the event of site evacuation, so that they can be protected and informed. This point can also be used in a crisis as an assembly point for the personnel shifts present on the site. To achieve this, the organisation of the point must make it possible to impose the following route: check on contamination, decontamination of persons as necessary, clean zone for non-contaminated or decontaminated persons. It is important that this routing separate contaminated individuals from those who are not. The layout of the premises and the planned organisation must also be able to meet the needs of the personnel (sanitary facilities, water, food, iodine tablets). Periodic checks must be carried out to verify the contents of the fall-back centre. A procedure stipulating the organisation of the fall-back point and detailing its equipment must be present on the sites. Each site has a fallback centre, located off the site, which can accommodate the personnel in the event of site evacuation. However, too many fall-back centres are less than 5 km from the sites, such as at Golfech. Management of these premises needs to be improved on certain sites. Management of the fall-back point on the Golfech site needs to be improved as a whole. The capacity is satisfactory but one of the fall-back points seen during the inspections is not only for the licensee's personnel but is also stipulated in the PPI as a place for grouping the population. Some are short of supplies (food rations, clothing), while others need to overhaul the decontamination line. The lists of equipment present in the fall-back points are not always up-to-date or monitored. For the Tricastin and Cruas sites, the fall-back points were combined but ASN had not been informed beforehand. This was discovered on the occasion of the post-Fukushima inspections, which cannot be considered satisfactory. Management of the fall-back points located outside the sites can be improved as a whole. The inventories of the equipment present need to be produced and periodically checked, the decontamination lines need to be tested, in particular with checks on the satisfactory ergonomics of the premises (no crossover of the different circuits). Finally, some fall-back centres are not far enough from the sites in the event of a severe accident. Emergency management premises: emergency technical centre The emergency technical centre houses the ELC in an emergency situation. It is important for this centre to be equipped with tools and the technical documentation needed by these teams. The documentation must be up-to-date and the communication equipment needs to be regularly checked. The emergency technical centres inspected and the useful technical documentation they contain are satisfactory. Communication routes During the seismic inspections, the inspectors found that the documentation concerning the analysis of the impact of an earthquake on both the on-site facilities and the off-site facilities, in particular the communication routes for access to the site, were generally insufficient or non-existent. ASN considers that for each of its sites, EDF needs to analyse the impact of an earthquake, both off-site, in particular on the communication routes allowing access to the site, and on-site. Means of mitigation must be defined and implemented if the occurrence of an earthquake were to compromise the planned arrangements using the on-site and off-site communication routes which fail to withstand an earthquake. This subject must be handled by the complementary safety assessments. 2.5.4 General evaluation on the topic "management of accident situations" Accident situation management can be improved. The organisation implemented by the sites under the PUI is satisfactory, although certain points still need to be improved further:  management of the fall-back points;  certain agreements concluded with outside organisations.

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