What is purging in the context of tank operations?

Purging, in the context of tank operations, refers to the process of introducing inert gas into a tank. This is primarily done to displace any residual flammable vapors, thus minimizing the risk of explosion or fire during subsequent operations, such as maintenance or cleaning. The introduction of inert gas creates an environment where the concentration of flammable gases is reduced to a safe level, enhancing operational safety.

While removing all liquids from a tank, cooling the tank temperature, and cleaning the tank are all important aspects of tank operations, they do not specifically align with the definition of purging. Removing liquids is typically referred to as draining or emptying, cooling relates to temperature control for various substances, and cleaning would involve physical methods to remove residue or contaminants from the tank surfaces. Inert gas purging serves a distinct purpose focused on safety against fire and explosion risks.