CEA Valduc carries out dismantling projects for nuclear installations. Integrated within a unit specialized in this field, the student will be responsible for synthesizing the feedback (REX) from these activities as well as developing an innovative decontamination diagnostic solution. The student will capitalize and analyze the REX of dismantling projects carried out in recent years. The objective is to highlight good practices and points of vigilance through a summary note. These good practices will be added under the REX to the operator training cycle. Then, the student will study and test applications of autoradiography measurement for the dismantling of nuclear installations. The objective is to appropriate this technique and put a measuring station into service. Finally, it will propose operational uses of autoradiography applied to sanitation and dismantling sites.