What does purging refer to in the context of a tank?

Purging in the context of a tank specifically refers to the process of venting. This involves removing any vapors or gases from the tank that may be present, often to ensure safe conditions before any maintenance or repairs are conducted. Proper purging is essential as it helps prevent the buildup of flammable vapors and ensures that the atmosphere inside the tank is safe for workers who may need to enter or work around it. This process can involve the introduction of air or a suitable inert gas to displace potentially hazardous vapors. Therefore, understanding the importance of purging contributes significantly to safety and compliance in managing fuel tanks.