Above ground storage tanks (ASTs) are critical assets across industries such as oil and gas, chemical processing, water treatment, and fuel storage. However, their exposure to the elements makes them highly vulnerable to corrosion, which can lead to costly leaks, environmental hazards, and equipment failure. At Kent Offshore, we specialise in advanced above ground storage tank corrosion protection solutions that extend tank lifespan, improve safety, and ensure regulatory compliance.
Why corrosion protection matters
Corrosion is a natural electrochemical process where metal reacts with environmental factors such as water, oxygen, and chemicals. For ASTs, this degradation can occur externally due to weather exposure or internally from the stored product or condensates. If left unaddressed, corrosion can lead to serious problems including:
- Structural weakness and tank failure
- Environmental contamination from leaks
- Increased maintenance costs
- Regulatory penalties
- Risk to human safety
Effective above ground storage tank corrosion protection not only helps prevent these issues but also contributes to sustainable asset management and reduced total cost of ownership.
Common causes of AST corrosion
Understanding the root causes of AST corrosion helps in selecting the right mitigation strategies. Key contributors include:
- Environmental exposure: Humidity, rainfall, salt-laden air, and temperature variations accelerate corrosion on external tank surfaces.
- Internal conditions: The chemical nature of the stored product, pH levels, and the presence of water or sediment contribute to internal corrosion.
- Poor coatings or insulation: Deteriorated protective coatings, lack of cathodic protection, or inadequate insulation can expose tank surfaces to corrosive agents.
- Design and construction flaws: Inadequate drainage, poor welding techniques, or the use of incompatible metals can create corrosion-prone areas.
At Kent Offshore, we conduct detailed assessments to identify corrosion risks and tailor a protection plan that addresses both environmental and operational conditions.
Our approach to corrosion protection
We take a holistic approach to above ground storage tank corrosion protection, combining preventative design, high-performance materials, and industry-best practices. Our services include:
1. Surface preparation and protective coatings
Applying high-quality protective coatings is one of the most effective ways to guard ASTs against corrosion. Our team prepares surfaces through abrasive blasting or other cleaning methods to ensure optimal adhesion. We then apply corrosion-resistant epoxy, polyurethane, or zinc-rich coatings based on the tank’s location and service conditions.
2. Cathodic protection systems
We design and install cathodic protection systems that use sacrificial anodes or impressed current systems to prevent the electrochemical reaction that causes corrosion. This is particularly useful for tank bottoms and other hard-to-coat areas.
3. Tank inspections and corrosion monitoring
Routine inspection and monitoring are key to maintaining effective above ground storage tank corrosion protection. Our team uses non-destructive testing (NDT), ultrasonic thickness measurements, and corrosion probes to track degradation and recommend timely interventions.
4. Maintenance and rehabilitation
Whether your AST needs touch-up work or a complete refurbishment, we provide scalable maintenance solutions that include spot repairs, recoating, and replacing worn-out protection systems. This ensures continued performance and compliance with industry standards such as API 653.
Industry standards and compliance
Compliance with national and international standards is a major aspect of AST management. Kent Offshore ensures that all our above ground storage tank corrosion protection services align with recognised codes such as:
- API 653 (Tank Inspection, Repair, Alteration, and Reconstruction)
- NACE SP0193 (External Cathodic Protection of On-grade Carbon Steel Storage Tank Bottoms)
- ISO 12944 (Protective Paint Systems)
- Environmental Protection Agency (EPA) guidelines
By staying up to date with regulations, we help clients avoid legal risks and maintain a high standard of operational integrity.
Why choose Kent Offshore?
Kent Offshore has earned a reputation for delivering reliable, cost-effective asset protection solutions in some of the world’s most demanding environments. Our corrosion engineers and technicians bring years of hands-on experience across multiple sectors, providing clients with peace of mind and long-term value.
Here’s what sets us apart:
- Customised protection strategies for every project
- Use of industry-leading materials and technologies
- Fast response and turnaround times
- Deep knowledge of offshore and onshore corrosion challenges
- Commitment to safety, quality, and environmental responsibility
Conclusion
Corrosion can significantly reduce the life and safety of above ground storage tanks, but with proactive intervention, it can be effectively managed. Kent Offshore offers comprehensive above ground storage tank corrosion protection services that safeguard your assets, reduce operational risks, and ensure compliance with industry regulations.
To learn more about how we can support your storage tank protection strategy, contact Kent Offshore today.
