What size pipe is used as the gauge well on a cone roof tank with a floating pan?

When determining the appropriate size of pipe used as a gauge well on a cone roof tank with a floating pan, the choice of an 8-inch pipe is based on several factors related to functionality and efficiency. An 8-inch gauge well allows for adequate measurements of fluid levels while accommodating the floating roof mechanism that needs to maintain its buoyancy and function effectively.

Larger gauge wells help reduce the potential for issues such as clogging or obstruction, which is particularly important in tanks where vapors can condense, leading to the buildup of liquid in gauge wells. This size also ensures that adequate airflow is maintained, allowing for pressure equalization between the tank and the gauge, which is crucial for accurate readings and the overall safety of the tank system.

Using a pipe size smaller than 8 inches could pose complications in measurement accuracy and could lead to more maintenance issues over time due to increased susceptibility to blockages and pressure imbalances. Therefore, the choice of an 8-inch pipe size serves practical operational needs in the context of floating roof tanks.