CORE SAFETY CALCULATIONS OF THE ALLEGRO CORE

摘要

Gas Cooled Fast Reactor (GFR) is one of the generation Ⅳ reactor concepts. The fast neutron spectrum and the high outlet temperature of the core make this concept a contributor to the sustainability of the nuclear technology. ALLEGRO will be a demo reactor about GFR technology and its realization represents a necessary milestone in developing an electricity producing GFR prototype of a larger, 2400 MWth power reactor (GFR2400). The high temperatures of the helium coolant as reaching 850°C allow high energy conversation efficiency (43-48%). Therefore, it requires special refractory fuels able to withstand these temperatures.