Oil tank fabrication
Safe industrial-scale storage of oil and its products
An oil tank is designed to store crude oil or petroleum products at industrial scale, and it must perform reliably against corrosion from sulphur compounds, environmental loads and swings in temperature and pressure. The roof type (fixed or floating), shell thickness and safety systems are chosen according to the product and the storage capacity.
Key features
Technical details
Safety requirements for oil tanks include a bund wall (dyke) to contain any spill, a suitable fire-fighting system, lightning protection and earthing to discharge static electricity, and standard safety distances between neighbouring tanks.
Drawing on its experience in designing and building storage tanks, Behineh Ab designs and builds oil tanks for your product, capacity and project safety requirements.
Technical specifications
Fixed roof or floating roof: choosing by product
For heavy, low-volatility products such as fuel oil, a fixed-roof tank is the more economical choice because evaporation losses are negligible. For volatile products such as gasoline and naphtha, a floating roof reduces the vapour space between roof and liquid, noticeably cutting evaporation losses and fire risk.
Shell thickness calculation to API 650
The thickness of each shell course of an oil tank is usually calculated by the one-foot or variable-design-point method of API 650. These methods take into account the hydrostatic pressure at the bottom of each course, the allowable stress of the steel and the joint efficiency, and the thickness of each course decreases from the bottom up.
Required safety systems for oil tanks
A bund wall around the tank contains any spill and should usually hold at least the volume of the main tank. An earthing system prevents static charge from building up (which could cause a spark), and fixed or semi-fixed fire-fighting equipment is required for a fast response to fire.
Applications and industries
Photo gallery
Oil tank gallery
Frequently asked questions
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Oil tank fabrication
Enter the pressure, temperature and fluid; our engineers send a technical proposal and price within 24 working hours.
- Written technical reply with a proposed concept drawing
- Site visit in Tehran and surroundings
- 24-month warranty on fabrication and welding
