What is the function of an atmospheric tank?

An atmospheric tank is specifically designed to operate at atmospheric pressure, which can include slight variations up to around 1.0 psi. This type of tank is utilized to store liquids or gases that do not need to be kept under high pressure, making it suitable for applications in various industries, including medical gas systems. The key characteristic of an atmospheric tank is that it maintains pressures close to that of the surrounding environment, ensuring safety and preventing the dangers associated with high-pressure storage.

The other choices involve functions that do not align with the purpose of an atmospheric tank. For instance, a tank for flammable gases would typically require specific safety measures and pressure controls that are not characteristics of atmospheric tanks. Similarly, a pressure vessel designated for high-pressure gas storage operates at significantly higher pressures than what an atmospheric tank is designed for. Lastly, a container for liquid oxygen would require special considerations for cryogenic storage and pressures well above atmospheric levels, which again is outside the scope of an atmospheric tank’s purpose.