Year
1975
Abstract
Nuclear fuel management requires the capability to predict the isotopic composition or inventory of nuclear fuel during its residence in, and upon discharge from a reactor. This capability is useful for in-core management to guide in reshuffling' and refueling schemes and for out-of-core management for warranty validation and accountability. The isotopic inventory generated by the irradiation of fresh fuel is determined in part by the environment in which it is exposed. Fuel shuffled from one region to another in a BWR may be expected to experience strong changes in environment because of the different void fractions and neutron energy spectra in which it may be placed.