- 93 - As at 30th June 2011, the seismic conformity baseline applicable to the various reactors was as follows: Reactor Plant series Version of modifications implemented on the reactor (ten-yearly outage-VD) Applicable seismic baseline Conformity of the DBE with the earthquake chosen by EDF in accordance with the RFS for the version of the modifications applicable as at 30th June 2011 Bugey 2-4 CP0 VD3 RFS 2001-01 The new SSE was reassessed at 0.145 g, which requires the installation of reinforcements to restore the seismic margins. The work has been completed on these two units. Bugey 3-5 CP0 VD2 RFS I-2-C The earthquake adopted is covered by the DBE. However, the VD3 baseline showed the need for seismic reinforcements. The work is complete on Bugey 5 and will be completed on Bugey 3 in 2013. Fessenheim 1 CP0 VD3 RFS 2001-01 The earthquake to be taken into account remains covered by the design-basis earthquake.* Fessenheim 2 CP0 VD2 RFS I-2-C Far-field earthquakes remain covered by the "EDF 0.2 g" DBE. The near-field earthquakes involved a high-frequency overshoot of the design level, considered to have no impact on the safety of the facility. No modifications were implemented during VD2 (the high frequencies do not intercept the natural frequencies of the buildings). For the VD3 preparations, the earthquake to be considered remains covered by the design-basis earthquake (for RFS 2001-01).* Blayais CPY VD2 RFS I-2-C RFS 2001-01 was used in the preparations for VD3 and shows that the minimum fixed earthquake and the site SSE are both covered by the DBE. Chinon CPY VD2 RFS I-2-C The earthquake defined in RFS I-2-C encompassed the DBE. In the preparations for the VD3, the earthquakes resulting from RFS 2001-01 entailed an overshoot above 7 Hz. A study was carried out to demonstrate that there was no impact on the site structures, the buildings and the equipment of the nuclear island. A study is in progress concerning the reactor building internal structures. Cruas ** CPY VD2 RFS I-2-C The earthquake resulting from application of the RFS I-2-C is covered by the DBE. The earthquake resulting from application of the RFS 2001-01 shows an overshoot above 8 Hz. The analyses performed during the preparations for VD3 show that there is no impact on all the buildings and equipment.
RkJQdWJsaXNoZXIy NjQ0NzU=