Double Deck External Floating Roof Tank

Storage tank capacities and levels 15 figure 1 9.

Double deck external floating roof tank.

These are categorized as external floating roofs which are designed to meet requirements of api standards 650 appendix c. Larry post a reply. 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. Storagetech storage tank internal floating roofs storagetech has been proudly innovating designing manufactiring and installing external and internal pon.

I appreciate your advice on the rate of fill. Single deck floating roof tank 12 figure 1 7. The low single deck is the more efficient of the two for 30 to 170 foot diameter tanks. The two preferred configurations for external floating roofs are the double deck and the low single deck with 30 minimum pontoon area.

The tank is in crude oil service and is 5000 m3 capacity. Sketches are provided in the article depicting the pan type pontoon and double deck arrangement for external floating roof tanks. I reviewed api 650 and 2003 and didn t find much specific information pertaining to fill rates. External floating roof tank double deck type an external floating roof tank is a storage tank commonly used to store large quantities of petroleum products such as crude oil or condensate.

Double deck floating roof tank 13 figure 1 8. The principal types of floating roof designs which are installed in tanks which store crude and middle distillate products are summarized below. Impact test exemption curve 23. It consists of an open topped cylindrical steel shell equipped with a roof that floats on the surface of the stored liquid.

Schematic sketch of the stabilised condensate tank 17 figure 1 10. If anyone has other thoughts on maximum fill rate i would apreciate the help. The tank is external double deck floating roof. Types of floating roofs in storage tanks.