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Introduction
Fluid storage steel tanks are complex engineering structures that work in constant contact with aggressive media. Their durability depends not only on the quality of the material, but also on many external and internal factors: on projected decisions to conditions of operation. In this article, we will look at the main factors that affect the service life of the steel tank and how to control them.
1. The quality of materials and welding
The basic element of the reliability of the tank is a body material , usually carbon steel (for example, steel 3, 09G2C or other structural steels). Low quality metal can quickly lose strength in contact with liquids having corrosion or abrasive effect.
Welding work is also critical . The presence of disorders in the seams leads to depressurization, cracks and accelerated corrosion. That is why all welds should undergo non -destructive control - visual, ultrasonic, capillary or radiographic.
🔹 CONTROL:
- Use of certified steel.
- Automated or semi -automatic welding.
- Checking each seam before operating.
2. Anti -corrosion protection
Corrosion is one of the main enemies of steel tanks. Its effect reduces the thickness of the walls, reduces the strength of the structure and can cause emergencies. It is important to use the anti -corrosion coating and control its condition in a timely manner.
Polyurethane, alkyd or epoxy paints are commonly used for external surfaces. For internal - specialized dry -resistant epoxy formulations. Sand -cutting preparation before applying the coating provides its reliable grip to the metal.
🔹 CONTROL:
- Professional surface training (SA 2½ or SA 3).
- Choosing a coating depending on the liquid.
- Regular coating condition (every 1-3 years).
3. Terms of operation and environment
Seriously affect the wear of the tank of operating conditions : temperature fluctuations, humidity levels, ultraviolet radiation, air pollution, as well as the physico-chemical properties of the stored fluid.
Particularly aggressive substances (reservoir water, technical mixtures, chemicals) are accelerated by the aging processes of the tank. Reservoirs installed in high humidity or coastal regions also require additional protection measures.
🔹 CONTROL:
- Insulation or ventilation of the tank as needed.
- Protection against UV influenza (painting, canopies).
- Taking into account the chemical compatibility of materials with liquid.
4. Regular maintenance and inspection
Even a perfectly made tank requires routine maintenance . Regular technical inspection allows timely detection of damage, cracks, loss of protective coating or traces of corrosion.
The service program may include:
- external inspection of the tank;
- control of sediment level;
- inspection of the condition of welds;
- Checking the tightness of hatches and nozzles.
🔹 CONTROL:
- Development of maintenance schedule.
- Conducting internal and external examinations in accordance with DSTU/en/API.
- Documentation of each examination.
Conclusion
The service life of the steel tank is influenced by the set of factors: quality of materials, welding, efficiency of anti -corrosion protection, conditions of operation and observance of service regulations. Only a comprehensive approach to the projection, production and further operation allows you to significantly extend the life of the structure and avoid emergencies.
For enterprises working with petroleum products and other technical liquids, control over the condition of the tanks is not just a duty, but a strategically important element of safety and production efficiency .
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