Anti-corrosion treatment for storage oil tanks is a systematic process that safeguards the tank's structure from rust, chemical erosion, and environmental damage—extending its lifespan and preventing leaks that could harm the environment or compromise stored oil quality.
Surface Preparation
- Thoroughly clean inner and outer surfaces to remove contaminants
- Remove rust, oil residues, dirt, and old coatings
- Use methods like sandblasting, chemical cleaning, or mechanical grinding
- Repair any cracks, dents, or structural defects
- Sandblasting creates a rough, clean surface that enhances coating adhesion
Coating Application
- Use UV-resistant and moisture-proof coatings for external surfaces
- Apply chemical-resistant coatings for internal surfaces
- Ensure compatibility with the type of oil stored
- Apply using spraying, brushing, or rolling methods
- Apply multiple layers with proper drying time between coats
Protective Liners
- Install liners for tanks storing highly corrosive oils
- Use materials like fiberglass, rubber, or specialized plastics
- Create a physical barrier between metal and stored oil
- Especially useful for older tanks or less corrosion-resistant materials
- Ensure tight sealing at joints and edges to prevent seepage
Cathodic Protection
- Ideal for large metal tanks, especially buried or high-moisture environments
- Use sacrificial anodes that corrode instead of the tank metal
- Alternatively, use impressed current systems with external power source
- Redirects corrosion away from the tank structure
- Creates a protective layer that inhibits rust formation
Inspection & Maintenance
- Conduct periodic inspections for coating damage, liner leaks, or anode wear
- Promptly repair any scratches, chips, or peeling in coatings
- Test current or anode condition in cathodic protection systems
- Keep exterior free of standing water and vegetation
- Regular maintenance ensures long-term effectiveness
By following these steps—surface preparation, coating application, liner installation (if needed), cathodic protection, and ongoing maintenance—anti-corrosion treatment for a storage oil tank is carried out effectively, ensuring the tank remains structurally sound and functional for years.