CONJUNTO DE COMBUSTIBLE DESTINADO A SER UTILIZADO CON UN RE-ACTOR NUCLEAR DE AGUA BAJO PRESION

摘要

This invention relates to a fuel assembly for use with a pressurized-water nuclear reactor having spectral shift capability. …The fuel assembly is provided with a moderator fluid flow system (14, 22, 23) which is sealed and separate from the flow of moderator/coolant so as to permit moderating fluid (e.g. D2O or H2O or D2O/H2O mixtures) of variable neutron moderating effectiveness to be introduced for the purpose of spectral shift control without affecting the make-up of the moderator/coolant itself.