With any change in the structure, function and fluid inside the reservoirs, there will be various stresses and loads in them. Most of the mechanical and thermal stresses are applied to the reservoirs. Loads such as impact, fluid movement, and fluid weight are among mechanical loads that lead to stresses such as hydrostatic stress inside the reservoir. The second category is the temperature loads on the reservoirs. One of the sources of thermal stress is temperature changes during the day and night or changes in the fluid inside, which affect the reservoir structure. By creating thermal stresses, tensile or compressive strains are applied to the structure and more specifically to the welding areas of metal reservoirs. In concrete reservoirs, due to the inequality of the coefficient of thermal expansion of concrete and rebar, a tension arises in their interface zone, which ultimately leads to the separation of concrete and rebar. As mentioned, this type of stress is more acute in metal reservoirs. In metal reservoirs, to protect against corrosion, different colors and coatings are used that do not stick to the body. Temperature changes, which are the cause of temperature stress and strain, weaken the middle area between the cover and the reservoir due to their periodicity, and finally end in the separation of the cover and the reservoir. This problem can be seen in many forms in all reservoirs and ultimately brings heavy expenses to the operating groups. By conducting scientific research and numerous tests, and by using the powerful forces of research and development, Farasath Zarfam Company was able to invent and implement a metal-composite reservoir for the first time in Tondgooyan Petrochemical, which can bear temperature changes up to 120 and the composite does not separate from the metal of the reservoir.

Farasath Zarfam Company has considered many different parameters to create proper adhesion of the composite. Because each of the parameters is very effective on the performance and service life of the metal-composite reservoir. These reservoirs can withstand even thermal shocks well. For example, if a fluid with a high temperature suddenly enters the reservoir and it is within the temperature tolerance range of the reservoir, it will not affect the composite. The aforementioned composite coating includes other functions as well. This coating can withstand some of the mechanical loads on the reservoir and increases the lifespan of the reservoir. But the very important efficiency of the composite coating is due to its resistance against changing chemical conditions. With the composite resistance against acidic and alkaline substances, which is a common property of industrial fluids, especially in the chemical and oil and gas industries, the metal of the reservoir is completely protected against them and leads to the non-imposition of very high repair and maintenance costs.

With unique knowledge and a capable executive team, Farasath Company is ready to consult, design and build metal-composite reservoirs to meet the needs of respected employers.