Single Deck Floating Roof Tank

These include new builds together with the evaluation of existing roof designs for suitability such as analysing the various flotation cases and repair.

Single deck floating roof tank. The low single deck is the more efficient of the two for 30 to 170 foot diameter tanks. No hours are included for a dedicated fire safety watch. It is difficult to design pontoons for smaller di ameters and single deck roofs with larger diameters can be too flexible. Doorsheet is a minimum of 8 high x 8 6 wide.

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. 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. Tank is clean gas and lead free and ready for hot work. Good access exists to tank for equipment and materials.

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. 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. External floating roofis where the roof floats on the product in an open tank and the roof is open to atmosphere. The annular pontoon is divided into several chambers by radial bulkheads.

Internal floating roofis where the roof floats on the product in a fixed roof tank. There are 2 types of floating roof. A double deck roof is appreciably stronger than a single deck roof.