Storage tanks become pressurized when liquid is pumped in and compresses the existing tank vapor. Tanks also become pressurized due to increasing ambient temperatures, which cause the tank vapor to expand. To mitigate damage from these expanding tank vapors,
pressure relief valves are installed on tanks to prevent structural damage resulting from over-pressure.
Here is an excellent animation, courtesy of
Cashco, that shows how a pilot operated relief vent protects a storage tank from over pressurizing during a pump-in situation or during thermal heating conditions.
For more information on
tank relief valves, contact
Miller Energy at
www.millerenergy.com or by calling 908-755-6700.
