A high fidelity wall-resolved Large Eddy Simulation has been performed for the flow through a guide plate of a Control Rod Guide Assembly (CRGA) at a hydraulic Reynolds number of 10,000. The computational mesh contains more than 1 billion computational cells and the simulation is run over six flow passes, which corresponds to almost 1 million time steps. The pressure forces are computed for all the rods and their average and rms values analyzed. This simulation can be either used to validate coarser LES/URANS computations, to understand the origin of physical phenomena such as deformations and vibrations or to model the pressure load along a rod.