Floating Roof Double Deck Pontoon

Single deck pontoon type figure 1 4 double deck figure 1 5 special buoy and radially reinforced roofs floating roof tank will be further discussed in details in later chapter.

Floating roof double deck pontoon. Sketches are provided in the article depicting the pan type pontoon and double deck arrangement for external floating roof tanks. 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. The roof is consisted of a portion divided by the ring and radial bulkheads into several compartments and a portion called the flexible bay. Pontoon type floating roofs are the most economical type of floating roofs in the market.

Ergil storagetech internal floating roofs which minimize the evaporation losses of stored products such as jet fuels gasoline diesel and crude oil can be supplied as aluminium or stainless steel. The low single deck is the more efficient of the two for 30 to 170 foot diameter tanks. A double deck type floating roof has two complete decks covering the entire liquid surface. 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. 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. Types of external floating roof consist of. 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.

Figure 1 4 single deck pontoon type floating roof bob.