Development of breeding BWR core applicable to the advanced recycle system

In this paper, a reactor core performance of breeding BWR in both a conventional type recycle system assumed on purex method negligible on mixing of rare earth and noble metals and breeding BWR with actinide recycle system forming on mixing of rare earth at some ratio was investigated, to evaluate applicability of this reactor core to the recycle system. As a result, by using a dense fuel and neutron streaming effect, a concept on breeding BWR core capable of breeding the fuel and making its void coefficient negative was constructed at conventional core size. On this core, applicability to an advanced recycle system to recycle the spent LWR fuel by its dry processing and vibrational filling fuel processing was investigated. As a result, by effect of fast neutron spectra effect nuclides mixing into fuel in the advancing recycle system could be controlled to obtain forecasting of establishment on core with breeding performance. (G.K.)