al fissile uranium limitations (Kim et al. 6). Los Alamos is working at the Gen IV level in an effort to deal with nuclear reactor safety, continuing to develop the TRAC/RELAP Advanced Computational Engine (TRACE) code for modeling nuclear power plants and running simulated accident scenarios (ôNuclear Technology and Applications Research at Los Alamos National Laboratoryö). TRACE now includes liquid-metal fluid properties and is capable of tracking trace species, but scientists are looking ahead to hybrid code development, support of GEN IV reactor concepts, and linking TRACE to computational fluid dynamic or reactor physics analysis kernels (ôNuclear Technology and Applications Research at Los Alamos National Laboratoryö).
The initiative to develop Gen IV nuclear energy systems is a specific focus of the Nuclear Energy Research Initiative (NERI), which is currently developing new reactor systems that will be deployed within the next 20 years (ôNERIö). Among their projects is the Next Generation Nuclear Plant (N
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