Review and evaluation of available critical experiment data for HTGR non-proliferation fuel cycles

As part of the overall effort to resolve the issues of nuclear materials diversion and weapons proliferation, General Atomic (GA) has undertaken a study on the effective utilization on low enrichment uranium (LEU) fuel cycles in the High Temperature Gas-Cooled Reactor (HTGR). In the area of the core design, this work involved a thorough evaluation of the feasibility of various possible LEU fuel cycles including a definition of potential problems. Among the items considered in this core study were calculational methods for LEU fuel in HTGRs. In this regard, a review was undertaken of the available experimental data from critical facilities using LEU in HTGR or HTGR-like assemblies, which could be used to validate the physics design codes used at GA for the non-proliferation design work. The results of this review are summarized