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The Most Common Operational Problems of Acid-Resistant Tanks and How to Avoid Them
Acid-resistant tanks are important equipment in plants across many industries, such as chemical, food, and pharmaceutical. Their durability and resistance to aggressive substances make them widely used. However, even the highest quality steel tanks can become damaged over time if not properly operated and maintained. In this article, we will discuss the most common operational problems of acid-resistant tanks and how to avoid them.
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Corrosion and Its Effects
Although acid-resistant tanks are made of stainless steel, this does not mean they are completely immune to corrosion. The most common types of corrosion are:
- Pitting corrosion – occurs as a result of damage to the passive layer on the tank's surface.
- Crevice corrosion – develops in hard-to-reach places, e.g., in welds.
- Intergranular corrosion – appears as a result of improper heat treatment of the material.
How to avoid it?
- Regular inspection of the tank's surface condition.
- Using appropriate cleaning and passivating agents.
- Avoiding prolonged contact with aggressive substances without proper protection.
Accumulation of Contaminants and Scale
In tanks, especially those used for storing liquids, deposits can accumulate, which leads to a decrease in their efficiency and an increased risk of corrosion.
How to avoid it?
- Regular washing and disinfection of tanks.
- Using filters and water treatment systems.
- Using specialized agents for removing deposits.
Mechanical Damage
During use, steel tanks can be exposed to various types of mechanical damage, such as cracks, dents, or damage to welds.
How to avoid it?
- Careful transportation and installation of tanks.
- Limiting exposure to impacts and excessive loads.
- Regular technical inspections and immediate repair of minor damages.
Improper Operation of Tanks
Tanks used in various processes can be exposed to unsuitable operating conditions, e.g., excessively high temperatures, chemical incompatibility with the tank material, or improper filling and emptying.
How to avoid it?
- Adhering to the manufacturer's operating recommendations.
- Selecting the appropriate tank for the specific substance.
- Regular training of personnel in the use of tanks.
Problems with Seals
Leaks in acid-resistant tanks can lead to spills, which threatens safety and can cause material losses.
How to avoid it?
- Regular replacement of seals and inspection of connection points.
- Using sealing materials resistant to the stored substances.
- Monitoring the pressure inside the tank.
Summary
Proper operation of acid-resistant tanks is the key to their longevity and trouble-free performance. Regular maintenance, proper cleaning, and adherence to the manufacturer's recommendations will help avoid problems related to corrosion, deposits, mechanical damage, or leaks. Thanks to these actions, steel tanks, both new and used, can serve for many years without the need for costly repairs or replacement.