“…The question of a water-cooled reactor with self-sustaining U3/Th fuel has been explored in a number of studies, including the light water breeder reactor (Freeman et al, 1989), various light water moderated parametric reactor physics studies (Permana et al, 2007(Permana et al, , 2008Shwageraus et al, 2008;Yun et al, 2010;Lindley et al, 2014), reduced moderation boiling water reactors Shaposhnik et al, 2013;Lindley et al, 2014), and heavy water cooled pressurized water reactors (Takaki and Mardiansah, 2012), among many other studies. It is outside the scope of this paper to provide a comprehensive literature review or to develop such a reactor system.…”