What is the purpose of a gas blanket in storage vessels?

The purpose of a gas blanket in storage vessels primarily revolves around preventing the ingress of air. When a storage vessel contains liquids or gases, changes in temperature and pressure can cause air to enter the vessel, leading to potential contamination and hazardous reactions, especially with flammable or reactive materials. The gas blanket creates a protective layer, typically composed of an inert gas, which helps maintain a safe and stable environment within the vessel, minimizing the risk of oxidation or explosive mixtures.

This function is crucial for ensuring the integrity of the stored materials and for safeguarding both the equipment and the surrounding environment. By maintaining a controlled atmosphere, the gas blanket also helps preserve the quality of the stored product, as exposure to air can lead to degradation or unwanted chemical reactions. The prevention of air ingress is essential in various applications, including the storage of chemicals, fuels, and food products.