- 58 - (PC) or containing the intervention resources) and the utilities (in particular the gas and electricity supplies) are not designed to SSE standards. In particular, the R1 process building (materials recycling) would not withstand an earthquake and neither would the equipment it contains. The licensee intends to ensure that the facilities are made safe in the event of an earthquake. It has also deployed a seismic detection and cut-out system (DCS) which will be operational in January 2012 and which will automatically cut-off the utility supplies (especially explosive gases) in the event of an earthquake. The inspectors found that certain release monitoring systems had batteries (2h for the site's radiological monitoring devices for example), but that the seismic resistance of the environmental monitoring systems was not guaranteed. To conclude, the inspection of the FBFC on the earthquake topic brought to light the need to strengthen the R1 process building and rapidly finalise the service entry of the seismic cut-off system (DCS). 3.3.3 Other facilities ATPu The plutonium technology facility is equipped with a seismic detection system which would automatically cut off the water and electricity supplies to the facilities and trigger the BNI's on-site emergency plan (PUI). There are 6 accelerometers for the BNI, along with accelerometers in the centre which trigger FLS alerts. Inspection of these accelerometers is the responsibility of AREVA NC. The actuators controlled are positioned in the ATPu, the LPC and the LEFCA. The inspectors examined the seismic accelerometer checks carried out in 2010. They found that one device was faulty. The licensee nonetheless indicated that the failure of a single device would not compromise the safety function, owing to the redundancy of the accelerometers. In the inspection followup letter, ASN asked the licensee to submit its experience feedback on the reliability of the accelerometers and the time taken to replace this equipment if defective (availability of spares, qualification of persons involved, etc.). A number of the centre's water tanks are not designed to withstand the SSE and neither are the pumping systems. The licensee mentioned plans to build tanks for that purpose. The inspectors found that the walkie-talkies and the protective suits intended to protect the reconnaissance team personnel against the possible dissemination of radioactive substances are stored in the premises of BNI 32, which is not designed to withstand a strong earthquake defined as being of intensity greater than 5 on the MSK scale. Neither would the area designated as the advance command post (PCA) withstand such an earthquake. The inspectors found that the BNI 32 procedure detailing the steps to be taken following an earthquake needed to be updated to take account of the progress made with the decommissioning of the facility. To conclude, the inspectors found: satisfactory points: the seismic detection system is operational, steps are being taken to raise personnel awareness but need to be extended to all parties, including the contractors; points to be improved: the means of communication and the protective suits to be used in the event of an earthquake are stored in a room which would not withstand the earthquake; the post-seismic intervention procedures need to be updated to take account of the progress made with the facility decommissioning work. Masurca The inspectors found that in the event of an SSE, the facility would be unable to guarantee the availability (integrity and/or operability) of its emergency resources housed in structures not designed to withstand the SSE. The licensee however considers that the inventory of its active resources and their seismic design are no longer pertinent given that, in the current configuration, no active means are required to maintain the BNI in a safe state. Furthermore, the ability of the BNI's specific monitors to withstand an SSE is not guaranteed. In this respect, the BNI is no longer independent and would need to call in mobile resources
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