Single Deck Floating Roof Tank

Internal floating roofis where the roof floats on the product in a fixed roof tank.

Single deck floating roof tank.

Tank is clean gas and lead free and ready for hot work. There is a annular space with seal gland between the floating roof and the tank wall to separate air when stored liquid float up or down on the roof greatly reducing evaporation loss in the storage process. It is difficult to design pontoons for smaller di ameters and single deck roofs with larger diameters can be too flexible. No hours are included for a dedicated fire safety watch.

External floating roofis where the roof floats on the product in an open tank and the roof is open to atmosphere. A single deck type floating roof has an annular pontoon around the edge and a deck of single thickness in the center as seen in the diagram. Good access exists to tank for equipment and materials. The low single deck is the more efficient of the two for 30 to 170 foot diameter tanks.

Floating roof tanks is which the roof floats directly on top of the product. The annular pontoon is divided into several chambers by radial bulkheads. Floating roof atmospheric storage tanks. The floating roof of a floating roof tank is a floating roof floating on the surface of stored liquid floating up or down with the level of stored liquid.

A double deck roof is appreciably stronger than a single deck roof. Over the years jm dixon associates has undertaken the design of many floating roofs both double and single deck for world renowned clients such as philips 66 exxon mobil and ineos. Fabricate install new single deck annular pontoon floating roof the screening estimates are based upon the following assumptions.