Analysis on different material attractiveness concept based on plutonium composition of FBR blanket system

Abstract

Material attractiveness levels based on the composition of plutonium isotopes have been investigated by adopting attractiveness (ATTR) and figure of merit (FOM) formulas as well as decay heat and spontaneous fission compositions. FOM formula requires relatively high doping rate of even mass plutonium than ATTR formula and it shows much lower material attractiveness level can be obtained when spontaneous fission neutron component is included as additional proliferation resistance component, which is combined with decay heat component. To denature plutonium based on Kessler's criterion for high technology level, it requires 2% MA doping in the blanket regions and loading 1% doping MA shows higher enough to denature plutonium of medium technology and low technology levels. Attractiveness level of weapon grade or high attractiveness level is shown by blanket fuel regions of Fast Breeder Reactor (FBR) with adopting ATTR1 and FOM1 formulas, while adopting ATTR2 and FOM2 formulas show core regions reach practically unusable level or low attractiveness level and blanket regions obtain weapon grade level or high attractiveness level for no MA doping case. MA > 1.6% of ATTR2 and MA > 3.6% of FOM2 in the blanket regions are enough to reach practically unusable level or low attractiveness level.