What is the most common mode of failure in bolted tanks? Leakage?

Bolted tanks could experience failures similar to any other type of tank. But like all tanks, the risk of failure is dependent on the application and usage.

Leakage is the first and foremost concern when it comes to storage of liquids and bolted tanks are no exception. Even though our experience shows that leakage after a proper Hydrotest is rare, if leakage were to occur, it would be through the joints or a punctured hole and the repair is relatively simple. Read “How to repair a leak”.

Other modes of failure could be pressure or vacuum built up inside the tank, which would result in damage to the roof or tank wall. Such failures would happen when the vent on the tank is incorrectly sized or obstructed due to lack of maintenance.