Before the definitive shutdown of the reactor Phénix, a series of end of life tests were performed, by CEA (Commissariat à l’Energie Atomique et aux Energies Alternatives), EDF (Électricité de France) and AREVA, in order to enlarge the experimental database and to improve the research field on sodium cooled fast reactors. Due to this important opportunity, the IAEA (International Atomic Energy Agency) decided to establish a Coordinate Research Project among different countries to allow computational codes validation and results comparison. In this context, a benchmark was established on the “Control Rod Withdrawal Test Performed during the Phénix End-of-Life Experiments”, with the objective of the investigation on the flux and power local deformations in the core as a result of different control rod insertion and extraction configurations.