Floating Roof Tank Drain Assembly

There is a annular space with seal gland between the floating roof and the tank wall to separate air when stored liquid float up or down on the roof greatly reducing evaporation loss in the storage process.

Floating roof tank drain assembly.

Empty tank drain pipeline 2. Isolate the tank 3. With our specialized field crews and equipment we have the capabilities to repair and completely overhaul tanks as part of api 653 out of service tank maintenance programs. Adequate draining of this rain water is very important for safe and reliable operation of storage tanks with external floating roofs.

Drain water on external floating roofs may contain sediments and debris which causes the drains to. Water on the roof is usually drained from a flexible hose that runs from a drain sump on the roof through the stored liquid to a drain valve on the shell at the base of the tank. Retesting for the presence of hidden vapor inside tank 8. Rain water and snow can accumulate on the roof eventually the roof may sink.

Tank cleaning vapor freeing 6. The drain will not exert undue force on the floating roof. The floating roof of a floating roof tank is a floating roof floating on the surface of stored liquid floating up or down with the level of stored liquid. 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.

Hmt s full range of services includes design construction maintenance inspection and repairs of aboveground storage tanks. The skimmer floats on the top product ex. Floating roof stabilization and cribbing 5. Drain systems especially in climates with high rainfall water can accumulate on the external floating roof.

Armor clad is designed and manufactured as a true flexible floating roof drain system with repetitive lay pattern. Mechanical repairs if. Ateco skimmer systems are a proven solution for draining a light liquid product off the top of a heavier product in a cone or dome roof storage tank. Scan inspection of the tank bottom walls welds man ways and nozzles 9.

The hmt s products are engineered to provide significant benefits to our customers in the form of increased working capacity reduced heel improved tank safety increased life span reduced emissions and reduced maintenance. Atmospheric testing inside tank 4. We have crews experienced performing in service internal floating roof ifr and external floating roof efr seal inspections and repairs. Oil over water to collect the lighter of two non mixable liquids into a vortex breaker.

The whole assembly is designed and manufactured in a single continuous length with no intermittent joints or couplings to restrict flow.