Water tanks are essential assets, serving residential and commercial needs alike. However, being metal objects in constant contact with water, they are prone to corrosion over time. It’s crucial to understand that corrosion in a water system can lead to compromised water quality, unpleasant taste, and potential health risks. Moreover, if left unaddressed, corrosion can ultimately cause the complete failure of the water tank.
Fortunately, corrosion in metal water storage tanks can be prevented or effectively managed, ensuring the continued functionality of your water storage system. As the adage goes, “prevention is better than cure,” it’s advisable to take proactive steps and prepare for any eventualities, knowing that corrosion can be mitigated with the right approach.
In this article, we will explore strategies for preventing corrosion in metal water storage tanks, providing valuable insights to help safeguard your structures against corrosion.
What is Tank Corrosion?
Corrosion in tanks occurs due to electrochemical reactions between the metal surface and the surrounding soil or groundwater, causing deterioration of the metal surface. In essence, the tank material dissolves in the water contained within the tank, causing harm to the tank’s integrity.
According to the Environmental Protection Agency (EPA), approximately half of all underground storage tanks show signs of corrosion by the time they reach 15 years old.
What Causes Corrosion in Water Tanks?
Recalling your chemistry class, you might remember that metals or steels undergo chemical reactions when exposed to water and oxygen, leading to chemical changes.
Here are some of the primary reasons why corrosion occurs in water storage tanks with metal cages:
- Oxidation:
One of the primary reasons for corrosion in water tanks is the oxidation of metals. This occurs when oxygen in the water reacts with the metal, leading to its degradation. There are typically two forms of oxidation: galvanic corrosion and chemical oxidation.
Galvanic corrosion occurs when dissimilar metals come into direct contact or are exposed to battery acid. On the other hand, chemical oxidation results from the interaction between metal ions and atmospheric oxygen.
- Rust Formation:
Rust is essentially the buildup of iron ions on the surface of a metal object. When iron is exposed to air or water, it undergoes a chemical reaction, forming a powdery substance known as rust. Over time, this rust accumulates on the metal surface, potentially creating holes that compromise its structural integrity and may cause leaks.
- Carbonation:
Corrosion can also be triggered by the presence of carbon dioxide in water. Concrete’s natural alkalinity decreases through a process called carbonation, where carbon dioxide interacts with hydrated cement paste in pore water. As carbon dioxide from the atmosphere penetrates the concrete, it creates mild carbonic acids within the pore solution of the concrete.
How to Prevent Corrosion in Water Tanks?
Despite the significant risk of tank corrosion and subsequent damage, there are preventive steps you can take to avoid such situations.
Here are Some Tips to Follow:
- Ensure proper tank installation
Ensure the tank is installed correctly, with its cap securely sealed to prevent groundwater leakage. Regularly check the seams for any signs of leakage.
- Schedule regular inspections
Arrange for professional inspections promptly whenever equipment or components show signs of malfunction.
- Maintain your tank diligently
Strictly adhere to the manufacturer’s maintenance instructions during routine upkeep. Avoid overfilling the tank to prevent issues.
- Install and maintain safety valves
Ensure all safety valves are installed and operational to prevent tank overflow during emergencies or malfunctions.
- Check for signs of corrosion
Regularly inspect your tank for any stains, bulging, or leaking joints, as these are indicative of corrosion. Stay vigilant and conduct thorough inspections.
By staying vigilant and taking responsible actions, you can prevent further damage and ensure your tank remains in optimal condition.
Storage Tank Preservation? We got You Covered!
Ensuring the protection of your tank from damage is a crucial responsibility, with numerous factors to consider and adhere to. If you feel overwhelmed by the task of tank inspection and maintenance, fret not. Professional water tank service companies are well-equipped to efficiently handle the job on your behalf.
At Tank Inspections Vegas by American Tanks, we prioritize client satisfaction above all else. With over two decades of industry experience, we specialize in servicing industrial and commercial tanks, as well as tank liners. As licensed providers, we ensure strict compliance with international standards for protection and safety.
We continuously stay abreast of the latest innovations in the field to better serve your needs. Contact us today and let us know how we can assist you!
Call Tank Inspections Vegas by American Tanks at +1 800 656 0167
Or email at info@tankinspections.vegas
