Fuel Storage Tank Painting Guidelines
Proper painting of fuel storage tanks requires careful attention to temperature conditions, as they directly affect paint adhesion, drying time, and long-term durability.
Cold Temperature Challenges
Below 50°F (10°C): Chemical reactions slow down, delaying drying and curing. This can lead to poor adhesion, causing peeling or flaking. Cold conditions thicken paint, making application difficult and potentially requiring excessive thinning that weakens protective properties. Moisture condensation can mix with wet paint, causing bubbling or blistering.
High Temperature Challenges
Above 90°F (32°C): Accelerated drying can trap solvents, creating cracked or wrinkled finishes. Paint becomes runny, leading to drips on vertical/curved surfaces. Sunlight-exposed tanks may cure unevenly, reducing flexibility needed for thermal expansion/contraction.
Key Qualification Requirements
- Surface temperature must be at least 5°F above dew point
- Air and surface temperatures should remain within range for 48 hours after application
- Use infrared thermometers for accurate surface temperature measurement
- Consider paint-specific additives for temperature extremes
- Avoid direct sunlight during application on hot days