This presentation gives a short and clear overview of the requirements of TRGS 800 regarding the storage of hazardous substances. The focus is on effective fire protection measures that help prevent fires and explosions in storage areas and workplaces.The presentation explains how hazardous substances must be classified, stored, and separated from each other. It also introduces practical structural, technical, and organisational safety measures. Using typical examples from daily work, common mistakes and suitable solutions are shown.