The spherical shape of this Tanks It creates a uniform stress distribution during internal loading, which causes Storage under pressure It becomes more suitable. Spherical tanks take up the least amount of floor space for pressurized storage and require less foundation, lining, fittings, and piping costs than other options..

one Spherical tank After designing and determining the consumables and thickness, etc., they are divided into different parts. The size of these parts depends on the diameter tank And it also has factory equipment. if possible tank divided into fewer parts with more surfaces, in that case the amount of welding operation for Tank installation is reduced.

Third party inspection

Because most of these reservoirs are very thick (More than 25 mm) and are designed from almost high-strength steels and have a significant carbon equivalent, and as a result, their welding starts with preheating according to specific instructions and according to Instructions Special also ends and cannot be used for any part of tank At the discretion of a number of welders Welding operation In this case, uneven distribution of thermal stresses and residual stresses welding It causes assembly of other parts to break and even cracks in some welded parts.(Related)

Engineering inspection of oil, gas, petrochemical and refinery equipment

Obviously, due to the sensitivity of these tanks, all welds should be tested quality They make sure. method Test usually Radiographic test (Radiography Test) And Ultrasonic test (Ultrasonic Test) And M.T (Magnetic test)are. After the completion of the welding work, it is time to open the nozzles, according to the existing map, the location of the nozzles is first marked, and then the cut position is removed by the cutting machine, the nozzle is placed in the place, and after dimensional control and leveling, Spherical tank It is worth mentioning that the nozzles are usually welded using U.T and M.T methods (Magnetic test) It is tested.