External Floating Roof Tank Pontoon

Sketches are provided in the article depicting the pan type pontoon and double deck arrangement for external floating roof tanks.

External floating roof tank pontoon.

Diameter to store crude oil. In my humble opinion the double deck arrangement would be a more robust design but may cost extra and a detailed techno economic evaluation would be needed to arrive at the optimum option. The roof rises and falls with the liquid level in the tank. In principle this eliminates tank breathing loss and greatly reduces the evaporative lo.

For more than four decades advance tank has repaired and installed internal and external floating roofs that range from 15 to 300 in diameter. Double deck pontoon roofs which are designed with concentric annular pontoons with radial bulkheads in each pontoon section. Our maintenance teams can replace damaged legs seal weld pontoons repair leaks replace your outer rim and more. The low single deck is the more efficient of the two for 30 to 170 foot diameter tanks.

Beside ergil storagetech floating roof s economic benefits they also protect the environment by not releasing toxic gasses to the atmosphere. The pontoons in floating roof tanks play an essential role when it comes to performance in above ground storage tanks. Ergil storagetech internal floating roofs which minimize the evaporation losses of stored products such as jet fuels gasoline diesel and crude oil can be supplied as aluminium or stainless steel. It consists of an open topped cylindrical steel shell equipped with a roof that floats on the surface of the stored liquid.

The sketches shown illustrate the above single deck and double deck floating roof with the critical components for these structures. As opposed to a fixed roof tank there is no vapor space in the floating roof tank. The two preferred configurations for external floating roofs are the double deck and the low single deck with 30 minimum pontoon area. Pontoon type floating roofs are the most economical type of floating roofs in the market.

Roof designs shown have been used in tanks as large as 345 ft.