Double Deck External Floating Roof Tank

The low single deck is the more efficient of the two for 30 to 170 foot diameter tanks.

Double deck external floating roof tank.

The tank is in crude oil service and is 5000 m3 capacity. Single deck floating roof tank 12 figure 1 7. Larry post a reply. It consists of an open topped cylindrical steel shell equipped with a roof that floats on the surface of the stored liquid.

In the same sealing condition compared with external floating roof tank internal floating roof tank can further reduce the volatilization loss as a result of that compared with double deck floating roof on external floating roof tank shaded by fixed roof and the gas phase layer between fixed roof and internal floating plate have a more. The two preferred configurations for external floating roofs are the double deck and the low single deck with 30 minimum pontoon area. The principal types of floating roof designs which are installed in tanks which store crude and middle distillate products are summarized below. The tank is external double deck floating roof.

Double deck type floating roof 10 figure 1 6. Impact test exemption curve 23. Types of floating roofs in storage tanks. Double deck floating roof tank 13 figure 1 8.

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. Storage tank capacities and levels 15 figure 1 9. Schematic sketch of the stabilised condensate tank 17 figure 1 10. I appreciate your advice on the rate of fill.

Storagetech storage tank internal floating roofs storagetech has been proudly innovating designing manufactiring and installing external and internal pon. Floating roof tanks are commonly protected against lightning ignition by bonding the floating roof to the seal shoes at no less than 3m 10ft intervals use of insulating sections in the hanging linkages covering sharp points on hangers with insulating materials and installation of electrical bond straps across each pinned hanger joint. If anyone has other thoughts on maximum fill rate i would apreciate the help. I reviewed api 650 and 2003 and didn t find much specific information pertaining to fill rates.