Preliminary dose estimations for a lead fast reactor

As specified in the IAEA Safety Standards, the important sources of radiation and contamination against which protection for site personnel, the public and the environment has to be provided should be described and evaluated during the design stage of the reactor. Some of the main radiation sources during normal operation of the ELSY (European Lead Cooled System) reactor are analyzed and their contributions to the doses in few critical points from personnel radioprotection point of view are presented in the paper. Preliminary dose contributions due to lead coolant activation, due to stainless steel impurities removed by the coolant from the Internals (by corrosion/erosion) and due to the activated air flowing through the reactor vessel cooling system are also presented. The isotope inventories carried out for the analyzed reactor components could be also subsequently used in the radioprotection evaluations or in waste characterization and disposal. (authors)