Bottom loading of road tank trucks at oil terminals and refineries is introduced to minimize the VOC emissions and increase the environmental protection. It increase also the process efficiency by characterized by loading of fluids into closed tanker compartments with high loading rates. To prevent hazardous overfilling, the accumulation of electrostatic charges and the evaporation of emissions, an emergency shut-off system, supervised grounding, and vapor collection is mandatory by law and to ensure safe loading processes.