The PHENIX reactor: a transmutation facility
Located on the banks of the Rhône on the nuclear site at Marcoule in Gard, PHENIX is a prototype power plant with a sodium-cooled fast reactor, a rare reactor type. It is France's main facility for carrying out studies of transmutation. PHENIX went into operation in 1973 and was upgraded in 1998 for the purpose of carrying out research, following the decommissioning of SUPERPHENIX, until October 2009 when it was also decommissioned.