COMPARISON OF WASTE DUE TO IRRADIATED STEELS IN THE ESFR AND DEMO

For either nuclear fusion or generation IV fission reactors to be viable as a commercial energy source the decommissioning and waste disposal solutions must considered during design. A multi-step simulation process combining Monte Carlo Neutron Transport simulations with inventory have been performed estimate activation of steels in key reactor components European Sodium-cooled fast Reactor (ESFR). Waste classifications based on UK regulations applied expected masses low level intermediate waste. The use reduced steels, EUROFER F82H, external core results factor 10 reduction percentage classified Intermediate Level (ILW). estimates are compared existing for Demonstration (DEMO). ESFR has lower ILW per total mass due irradiated DEMO. However, there is no Higher Activity (HAW) associated DEMO, arisings from spent fuel.