What is required at the intersection of vent piping when installing multiple tanks with separate fill pipes?

In a scenario where multiple tanks with separate fill pipes are installed, maintaining the appropriate venting is crucial for safety and efficiency. The requirement at the intersection of vent piping within this setup is that no size increase is needed.

This is primarily because the existing vent size is typically designed to handle the vapor displacement from the individual tanks, conforming to code specifications. Each tank's vent needs to allow for proper ventilation to prevent pressure buildup; thus, the system's design accounts for the capacity of the combined venting needs without necessitating a larger pipe.

When choosing to install multiple fills with their respective vents, it's vital to adhere to guidelines that specify that vent size should be adequate based on the volume and nature of the fuel being stored, but no increase in size is required simply due to the number of tank connections. In essence, the structure of the venting does not change merely with the addition of more tanks; it remains effective as long as the total vent area aligns with regulatory standards.

Understanding these principles ensures compliance with the Maine Fuel Code, as proper venting is essential for safety and operational effectiveness.