Analysis of the impact of weather conditions on hazard zones considering a specific configuration of a hydrogen refuelling station

The paper deals with the assessment of explosion-related hazards caused by a dispenser leakage in a hydrogen refuelling station. The first part of the paper discusses the impact of weather conditions on the hydrogen cloud dispersion using the Computational Fluid Dynamics (CFD) software. Different wind angles are investigated, and their impact is compared with windless conditions. Hydrogen flammability range zones are discussed. The study proposes hydrogen detector locations and analyzes the measurements across varying wind conditions. Based on the results from the first part, the consequences of a hydrogen explosion inside the storage building are determined using the LS-Dyna software. The application of the Johnson-Cook failure model enables the evaluation of the destruction of a trailer with hydrogen tanks and the whole structure of the storage building. Different masses of released hydrogen are considered, and the explosion consequences to the surroundings are discussed.