Advancements in modeling fuel pulverization and cladding behavior during a LOCA
During a loss-of-coolant accident (LOCA), it is possible for nuclear fuel rods to undergo a three-step process known as fuel fragmentation, relocation, and dispersal (FFRD). The chance of FFRD occurring increases as the fuel burnup increases. To support the nuclear industry’s desire to increase the discharge burnup of nuclear fuels in light-water reactors (LWRs), it […]
Evaluation of Reduced Order Model for HT-9 Creep and Modifications to Current HT-9 Creep Model in BISON
In order to leverage existing reduced order models (ROM) for the modeling of LANL-developed HT-9 cladding constitutive behavior, mechanistic-based models have been implemented into BISON. It is posited that the increased fidelity of the ROM will show improvement over engineering-scale models in terms of comparison against experimental measurements. INL will assist LANL in implementing an […]
Evaluation of Mechanistic and Empirical Models against Existing FFRD and LOCA Experimental Databases
The desire of the nuclear industry to improve the economics of existing nuclear power plants has necessitated research into the potential of a phenomenon known as fuel fragmentation, relocation, and dispersal (FFRD). This phenomenon is possible during a loss-of-coolant accident (LOCA) at relatively high burnup. The Nuclear Energy Advanced Modeling and Simulation program has been […]
MARVEL Reactor Fuel Performance Report
The Microreactor Applications Research Validation and EvaLuation (MARVEL) project will produce a test bed at the Idaho National Laboratory (INL) for performing research and development on various operational features of microreactors to ultimately improve integration of microreactors to end-user applications. In order to construct and operate the MARVEL reactor in a timely manner, the system […]