PHENIX reactor hall
Located on the banks of the Rhône on the nuclear site at Marcoule in Gard, PHENIX was a prototype sodium-cooled fast reactor. It first went critical in 1973 and supplied its first electricity to the grid in July 1974. The reactor's thermal output was 580 MWth and it had a 250 MW turbine generator system. Major renovations were carried out in its last few years as a result of successive safety reviews. PHENIX was decommissioned in October 2009 after 36 years of faithful service.