Single Deck Pontoon Floating Roof

Double deck floating roof tank 13 figure 1 8.

Single deck pontoon floating roof.

A in region with increased wind pressure where it is possible to tear the membrane from the product and it must be prevented. Single deck roofs which have distributed buoyancy across the entire roof area through the provision of localized buoyancy chambers which are welded to the top side of the roof center deck. Single deck type. A floating roof for liquid storage tanks comprising a stiff annular peripheral pontoon a single deck portion constructed in the form of a flexible diaphragm attached to the said pontoon adjacent the upper edge thereof and.

Double deck type floating roof 10 figure 1 6. 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. These include new builds together with the evaluation of existing roof designs for suitability such as analysing the various flotation cases and repair.

Schematic sketch of the stabilised condensate tank 17. Double deck pontoon roofs which are designed with concentric annular pontoons with radial bulkheads in each pontoon section. Fabricate install new single deck annular pontoon floating roof the screening estimates are based upon the following assumptions. Single deck floating roof tank 12 figure 1 7.

Storage tank capacities and levels 15 figure 1 9. The annular pontoon is divided into several chambers by radial bulkheads. Good access exists to tank for equipment and materials. Single deck floating roof with ring of pontoons in the periphery and many pontoons upon the membrane this kind of roof combines the strengths of the single deck and double deck floating roofs.

Single deck pontoon type floating roof 9 figure 1 5. Having thus described my invention what i claim as new and desire to secure by letters patent of the united states is. The upper surface of the pontoon is slanted down toward the center for drainage purposes and the lower surface. Main two types of floating roof tanks single deck floating roof in single deck roof which is also called pontoon roof the buoyancy is derived by the pontoons according to api 650 3.

Different roof configurations were shown in figure 100 1. The sketches shown. The deck of single deck floating roofs shall be designed to be in contact with the storage liquid during normal operation regardless of the service. Doorsheet is a minimum of 8 high x 8 6 wide.

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.