Residual radioactivity of materials from decommissioning of fast reactors

This article examines the residual reactivity of materials from the decommissioning of fast reactors in Russian Federation states. The BN-800 reactor decommissioning is used as the basis of this paper. Based on a 40-year lifetime, the various long-lived nuclides formed by the activation process are noted, and the residual radiation effects as a function of time after decommissioning are plotted. Possibilities for optimizing construction with respect to residual radiation concerns are discussed, as are possible ways to further limit the radiation hazard during decommissioning operations.