Mexican results on the refined phase of the NEA lead-cooled fast reactor benchmark

This paper presents the Mexican team's work in the refined phase of the NEA/OECD Lead-cooled Fast Reactor Benchmark. The Benchmark consists of three independent exercises: a 2-D pin-level exercise, a 2-D subassembly/supercell-level exercise, and a 3-D full-core-level burnup exercise. The core described in the Benchmark is based on the Alfred Lead Fast Reactor design. It contains Fuel Subassemblies, Control and Safety Rods, Reflectors, and Shielding Subassemblies. In this refined phase, specifications not previously clearly defined were clarified to avoid confusion among participants, such as temperatures in different regions, material densities, and geometries under given temperatures, and an alternative method to simplify the burnup of the whole core. The Benchmark in the reported stage is still in the blind phase. Hence, no data was previously available to compare so this is the first comparison with other participants. Participation in the Benchmark implies a very complex exercise in developing methodologies of core modeling, the presented results are generally consistent with those of the other participants. The participation in this exercise can be considered a success even if there is still some refinement to be done. (author)