Internal Floating Roof Tank Legs

At low liquid levels the roof eventually lands and a vapor space forms between the liquid surface and the roof similar to a fixed roof tank.

Internal floating roof tank legs.

The interior and exterior of the floating roof support leg boot work together to provide resistance against product loss as well as environmental effects from outside the tank. Legs are adjustable to the desired normal operating level for each location. Internal floating roof tank is known as internal floating roof storage tank floating roof oil tank internal floating plate storage tank and internal floating plate oil tank etc. For more than four decades advance tank has repaired and installed internal and external floating roofs that range from 15 to 300 in diameter.

In the picture above the legs have been pulled up and pinned in the low legs position. The altech ifr has supporting legs which are adjustable from the topside while in service. The roof has support legs hanging down into the liquid. The roof leg is pinned through the sleeve in this position prior to landing the roof to do maintenance inside the tank.

Mesa etp floating roof support leg boots are made of mesathane 6036 laminated thermoplastic urethane tpu material. The picture above shows an external floating roof with the roof legs in the high position in this position there is typically about 6 of space between the floor and roof. The length of the legs must be adjustable from the top of the roof and the legs must be notched or perforated at the bottom to provide drainage. The support legs are usually retractable to increase the working volume of the tank.

The floating roof must be provided with landing legs that are designed to support the external floating roof under a uniform design load of at least 25 psf api 650 appendix c 3 10.