External Floating Roof Tank Drain System

Ergil storagetech swivel joint drain system model no 800 ergil storagetech swivel joint roof drain system model 800 is especially applicable to external floating roof storage tank in order to drain the rain water.

External floating roof tank drain system.

The primary drain for an external floating roof is required to be 3 inch minimum for tanks up to 120 feet in diame ter and 4 inch minimum for larger diameters. Each drain line requires just a 500mm wide corridor to operate in between sump and shell nozzle. In tanks above 60m diameter it is advisable for safety reasons to fit more than one drain. Water buildup from rain and melting snow add a significant amount of weight on the floating roof system.

Drain water on external floating roofs may contain sediments and debris which causes the drains to malfunction. The matrix applied technologies drain system is easy to install in any tank. An external floating roof tank is a storage tank commonly used to store large quantities of petroleum products such as crude oil or condensate. We will provide installation drawings if you send us your drain data.

Draining rain water from an external floating roof is important to make sure the external floating roof will not build up too much water on top which could even cause sinking of the roof in the worst cases. It consists of an open topped cylindrical steel shell equipped with a roof that floats on the surface of the stored liquid. Adequate draining of this rain water is a very important aspect of safe and reliable operation of storage tanks with external floating roofs. Introduced in 1982 this system combines the flexibility of the various flexible hose pipe systems with the strength found in rigid pipe swivel joint systems.

Internal floating roof external floating roof seal al dome roof drain system floating suction oil skimmer tank fitting. With the correct material selection it is suitable for all kind of stored products. Especially in climates with high rainfall water can accumulate on the external floating roof.