The floating roofs can be either external i e with open top tanks or internal i e inside fixed roof tanks.
Floating roof fixed roof tank.
A typical fixed roof tank consists of a cylindrical steel shell with a cone or dome shaped roof that is permanently affixed to the tank shell.
Floating roof tanks are generally about twice as expensive to construct as fixed roof tanks so there is a trade off of risk against cost.
An internal floating roof tank is a floating roof tank fixed an extra fixed roof on the floating roof to prevent floating roof from wind and rain and guarantee the quality of the stored oil.
The internal floating roof in a fixed roof tank with ifr design must float on the liquid surface except when the floating roof must be supported by the leg supports.
Floating roof tank can be divided into two types internal floating roof and external floating roof.
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.
Of currently used tank designs the fixed roof tank is the least expensive to construct and is generally considered the minimum acceptable equipment for storing liquids.
The continuous seal must.