- 167 - ASN considers that the emergency organisation implemented on the sites is satisfactory for the design-basis scenarios affecting a single installation. Nevertheless, EDF's current organisation and studies do not sufficiently address the management of a "multi-facility" emergency, possibly resulting from an external hazard, affecting all or part of the installations of a given site simultaneously and at different levels. In such a situation, ASN considers that the operating and emergency teams must be of adequate size to ensure all their duties on all the site's installations. ASN will therefore require EDF to supplement its organisation to take into account accident situations affecting all or part of the facilities of a given site simultaneously. ASN also considers it necessary, assuming an extreme situation of one of the types studied in the CSAs, for EDF to guarantee for each reactor the feasibility of all measures planned for in the operating documents (accident operating procedures, GIAG) with the operating and emergency teams present on the site, taking into account the necessary shift reliefs. ASN will issue a requirement on this subject. 6.1.2 Possibility of using existing equipment In the CSA specifications ASN asked EDF to address the following aspects of severe accident management: the possibility of using existing equipment, the provisions for using mobile devices (availability of such devices, time required to bring them to the site and put them into operation), the management of supplies (fuel for diesel generators, water, etc.), the management of radioactive releases and provisions to limit them, and the communication and information systems (internal and external). Possibility of using existing equipment: For the use of existing equipment, EDF indicates in the CSA reports that the equipment used is generally the SA-specific equipment and, if conditions permit and its use is compatible with the containment control objective, non-SA-specific equipment. There is a limited number of equipment items specific to the SA domain on the EDF sites. The measures required by the GIAG are predetermined and limited. They are based on the use of existing equipment items which are also predetermined and limited. Any other equipment utilisation or measure that might be requested by the National Emergency Organisation shall be jointly appraised by the various emergency teams to check that it is not of a prejudicial nature (particularly with regard to containment). ASN observes that as a general rule, the current baseline safety standard contains no hazard-resistance requirements for the SA-specific equipment (equipment and instrumentation). Consequently, EDF cannot guarantee the availability of existing equipment in the extreme situations studied in the CSAs. ASN will require EDF to integrate the equipment necessary for emergency management, including the SA equipment, into the "hard core" (see § 8). Furthermore, experience feedback from the Fukushima accident leads to questioning of the permanent availability and operability of the dosimetry and radiological protection equipment. ASN considers that the active dosimetry means, the measuring instruments for radiation protection and the personal and collective protection equipment must be permanently available on the sites and in sufficient quantity. ASN will issue a requirement on this subject. Provisions for using mobile devices: EDF indicates in the CSA reports that at present there is no specific national mobile device for severe accident management. There is however a local mobile device planned specifically for such situations: a processing unit for the plant unit radiation monitoring system (KRT) U5 for measuring the activity released during containment decompression by the venting-filtration system U5. Other mobile devices not specific to severe accident management can also be used if they have been set up before entry into the SA condition and if their operation is not contrary to the severe accident management objectives. As a general rule, the mobile devices called upon to manage all types of accident situation must be made available in predetermined times and conditions. Each site defines the organisation for putting into service and operating the mobile devices and guaranteeing their availability. To guarantee the availability of these devices, each one has a specific sheet describing its identification, its purpose, where it is stored, the service responsible for it, the duty function to contact for its
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