External Floating Roof Tank Construction

It consists of an open topped cylindrical steel shell equipped with a roof that floats on the surface of the stored liquid.

External floating roof tank construction.

External floating roof tank is known as external floating roof oil tank it is an open top floating roof tank without vault there is usually an external floating roof in it which can vertical float up and down. The external floating roof tank has a floating roof deck which is covered on the surface of oil and floats up and down with the oil level. The roof rises and falls with the liquid level in the tank. The floating roof is made up of various elements such as fittings decks and rim sealing systems.

19 ladder and well is a ladder that passes through a well and is used to access the tank bottom of an internal floating roof tank. External floating roof tanks are generally made of steel and only has a floating roof as the top covering. 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 floating roofs can be either external i e with open top tanks or internal i e inside fixed roof tanks.

Tanks with external floating roofs are used primarily to contain liquids with high vapor pressures when the vapor emissions from fixed roof tanks would exceed the standards set by the local jurisdiction. 18 internal floating roof tank is a storage tank equipped with a fixed roof and a floating roof which rests on the liquid being contained. 20 liquid mounted primary seal is a primary seal that is mounted. As there is almost no gas space between floating roof deck and oil level the evaporation loss of stored oil can be greatly reduced.