Raven Tanks: Corrosion Mitigation Strategies for Above-Ground Storage Tanks

Corrosion poses a significant threat to the structural integrity of above-ground storage tanks, potentially compromising their contents and necessitating costly repairs or replacements. Raven Tanks understands the critical importance of corrosion reduction for maintaining optimal tank performance and longevity. In this article, we will explore effective strategies to minimize corrosion risks, including the selection of protective coatings and liners, regular inspections, and the implementation of comprehensive maintenance programs. These best practices are designed to protect your tank investment, ensuring the safety and efficiency of your storage system. 


Choosing the Right Protective Coatings 

The initial line of defense against corrosion in above-ground storage tanks involves selecting appropriate protective coatings. These coatings act as a shield, guarding the tank material against corrosive elements and extending the tank’s operational life. Considerations for coating selection include the tank material, environmental conditions, and the stored substance. Raven Tanks offers insights into various protective coatings: 


  • Epoxy Coatings: Known for excellent adhesion, durability, and corrosion resistance, epoxy coatings are versatile and suitable for various applications and environments. 
  • Polyurethane Coatings: Renowned for resistance to UV radiation and abrasion, polyurethane coatings provide added protection against environmental elements. 
  • Zinc-Rich Primers: Offering galvanic protection, zinc-rich primers use zinc as a sacrificial anode to shield the underlying steel from corrosion. 


Consulting with a Raven Tanks coating specialist is essential for selecting the most suitable coating tailored to your specific tank and application requirements. 


Implementing High-Quality Tank Liners 

In addition to protective coatings, tank liners play a crucial role in reducing corrosion risks in above-ground storage tanks. Tank liners act as an additional barrier, shielding the tank material from both stored substances and external environmental conditions. Raven Tanks emphasizes the importance of selecting the right tank liner materials: 


  • PVC Liners: Known for excellent chemical resistance and durability, PVC liners are versatile and suitable for various storage applications. 
  • Polyolefin Liners (Polyethylene and Polypropylene): Offering outstanding flexibility and stress-crack resistance, polyolefin liners are ideal for tanks experiencing frequent temperature and pressure fluctuations. 
  • Butyl Rubber Liners: Renowned for robust, puncture-resistant characteristics, butyl rubber liners excel in applications with a high risk of punctures and abrasions. 


Collaborating with Raven Tanks specialists ensures the selection of the most appropriate tank liner for your specific needs and application. 


Regular Inspections for Early Corrosion Detection 

Frequent inspections of above-ground storage tanks are vital for detecting early signs of corrosion and implementing timely corrective measures. Raven Tanks emphasizes the necessity of inspections conducted by experienced professionals well-versed in various tank types, materials, and corrosion identification methods. Inspection methods include visual inspections, ultrasonic thickness testing, and magnetic particle testing. 

Regular inspections not only enable the early detection and mitigation of corrosion but also provide an opportunity to assess the condition of protective coatings and liners. Damaged or worn coatings and liners can leave your tank vulnerable to corrosion, emphasizing the importance of repair or replacement to maintain the integrity of your tank system. Establishing a routine inspection schedule allows for proactive corrosion management, thereby extending the life of your storage tank. 


Comprehensive Maintenance Programs for Corrosion Control 

Developing a comprehensive maintenance program tailored to your specific tank type, material, and application is paramount for mitigating corrosion risks in above-ground storage tanks. Key elements of an effective maintenance program include: 


  • Regular Cleaning and Debris Removal: Internal and external tank cleanliness prevents the build-up of contaminants that contribute to corrosion. Adhering to manufacturer recommendations and industry best practices ensures thorough inspections and cleanings. 
  • Cathodic Protection: Implementing cathodic protection systems, such as galvanic anodes or impressed current systems, counteracts corrosion by making the tank surface less anodic, thereby reducing the corrosion rate. 
  • Monitoring Environmental Conditions: Keeping a watchful eye on the tank’s surrounding environment helps track changes that could accelerate corrosion. Environmental monitoring equipment, like humidity sensors, aids in detecting alterations impacting the tank’s integrity. 
  • Protective Equipment Maintenance: Regularly inspecting and maintaining the integrity of protective coatings and liners ensures they remain in good condition and effectively prevent corrosion. Timely repairs or replacements are scheduled as necessary. 
  • Staff Training: Educating personnel responsible for tank maintenance and operations about best practices for corrosion control, inspection techniques, and the importance of proactive maintenance enhances their ability to identify and address corrosion risks early. 


Raven Tanks emphasizes that, by implementing a tailored maintenance program aligned with your specific tank and application, you can effectively manage corrosion risks and ensure the ongoing performance and safety of your above-ground storage tank. 


Safeguard Your Storage Tank Investment with Raven Tanks 

In conclusion, effectively managing corrosion in above-ground storage tanks involves strategic choices such as selecting the right protective coatings and liners, conducting regular inspections, and implementing a comprehensive, proactive maintenance program. Raven Tanks is dedicated to helping you safeguard your storage tank investment. 

Raven Engineering Group  

1800 770 899  


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