Closing the PWR fuel cycle with a molten-salt incinerator

We present a detailed study of a non-moderated Molten-Salt (MS) reactor, when operated as a transuranium elements burner, closing the nuclear fuel cycle of a PWR reactor. We evaluate its neutronic characteristics and main safety parameters, both in the first years of operation and in equilibrium fuel cycle. Influence of the carrier salt composition, neutron flux and feed composition on the burner performance are also studied. Our results show, that non-moderated MS burner can be operated as a critical burner reactor without fertile support in an acceptable range of parameters. The temperature feedback coefficients are relatively low, but we show that their further optimization is possible. (authors)