Flamanville EPR: 1st milestone achieved with finalisation of the primary circuit mechanical erection
The mechanical erection of the Flamanville EPR’s main primary circuit* has been completed, as the large components have been installed and assembled (four steam generators, reactor vessel, pressuriser and reactor coolant pumps).
This stage marks the achievement of the first key milestone set by the EDF Group for the first quarter of 2016, in compliance with the schedule updated overt the summer of 2015.
Quality inspections performed demonstrated that all assembly operations fulfil the expected requirements. Only one weld out of the 32 performed on the primary circuit has to be reworked to ensure compliance.
After completion of the main building structure at the end of 2015 and finalisation of the primary circuit mechanical erection, construction of the Flamanville EPR continues to advance at a sustained pace towards the 2nd milestone as electromechanical erection accelerates and plant system test phases start (system by system). These operations will intensify in the second half of the year, in coordination with the suppliers and the teams in charge of reactor operation in order to prepare for system performance testing planned for 2017.
Xavier Ursat, Executive Director of EDF, in charge of New Nuclear Build, stated: “Achievement of the 1st milestone constitutes a key stage towards the start-up of the reactor scheduled for the last quarter of 2018. It attests to the effectiveness of the new organisational structure set up to ensure control of industrial construction activities and collective commitment of all our partners.”
*The primary circuit is a closed loop circuit, containing pressurised water. This water is heated in the reactor vessel when in contact with the fuel assemblies. The acquired heat is transferred to the secondary coolant in the steam generators to produce steam to drive the turbine generator.
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