External Floating Roof Tank Construction

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 tank construction.

An external floating roof tank is a storage tank commonly used to store large quantities of petroleum products such as crude oil or condensate. 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. The floating roof decks are usually made of welded steel plates and can be of three types double deck pontoon and pan. 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. 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 floating roofs can be either external i e with open top tanks or internal i e inside fixed roof tanks. Floating roof tanks are commonly protected against lightning ignition by bonding the floating roof to the seal shoes at no less than 3m 10ft intervals use of insulating sections in the hanging linkages covering sharp points on hangers with insulating materials and installation of electrical bond straps across each pinned hanger joint.

Floating roof tanks are usually built in a gigantic size and this would involve various disciplines such as civil chemical mechanical fire safety construction inspection commissioning and operation. As there is almost no gas space between floating roof deck and oil level the evaporation loss of stored oil can be greatly reduced. 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. 20 liquid mounted primary seal is a primary seal that is mounted.