The decommissioning of a PWR experimental facility: from shutdown to removal from site - 000063

BR2 is one of the world's principal high-flux materials testing reactors and CALLISTO was one of BR2 principal irradiation experiments since the early 1990's, used for PWR fuel and material studies. The dismantling of CALLISTO began in 2015. The CALLISTO end of life decommissioning strategy aimed for waste, cost and dose uptake minimization and included: -) the unloading and removal of the in-pile sections, -) a closed-loop full system chemical decontamination for dose reduction, -) the complete dismantling of the loop, -) the further sorting and segmentation in a dedicated workshop, -) a hard chemical batch wise decontamination for unconditional release. The paper will describe this project in detail with a focus on decommissioning activities, dose uptake and material management.