Approach to development of a high flux research reactor with pebble-bed core

At the Joint Institute of Power and Nuclear Research SOSNY, investigations have been carried out on the feasibility of a research reactor with pebble-bed core. The technical approach, physical calculation of the core, configurations considered and results obtained are described. It was concluded that for reaching maximum thermal neutron flux, frequent refuelling - in one or two days - would be required which could be achieved through hydro transportation of micro fuel elements. (author)