Protecting the integrity of an aboveground storage tank requires more than quality construction. Routine API 653 inspections help identify corrosion, monitor structural condition, and extend the service life of tanks used to store liquid fertilizer and other products.
At Heartland Tank Services, we continue to follow the principles established by our founder, Chris Brooks, who believed that quality inspections are one of the best ways to protect both people and long-term investments.
Why API 653 Inspections Matter
Liquid fertilizer places unique demands on storage tanks. With a specific gravity typically ranging from 1.3 to 1.5, these products create greater structural loads than many petroleum products. Combined with their corrosive nature, these conditions make regular API 653 tank inspections essential.
API 653 inspections help tank owners:
- Detect corrosion before it becomes a structural problem.
- Evaluate the condition of the tank shell, floor, and roof.
- Plan repairs before unexpected failures occur.
- Extend the service life of storage tanks.
- Improve safety and support regulatory compliance.
Ultrasonic Thickness Testing
One of the most important parts of an API 653 inspection is ultrasonic thickness (UT) testing.
UT testing measures the remaining thickness of the steel throughout the tank shell, floor, and roof. Each measurement is carefully documented so inspectors can compare future readings from the same locations and track corrosion over time.
This data helps owners make informed maintenance decisions and identify potential issues before they become expensive repairs.
Preparing a Tank for Inspection
A successful inspection requires more than simply emptying the tank.
Inspectors must be able to clearly see the steel surfaces. Tanks without coatings or PVC liners often require thorough power washing and, in some cases, abrasive cleaning to remove hardened scale that can conceal corrosion beneath the surface.
Every area inside the tank should be accessible so inspectors can evaluate the entire structure, not just the lower shell courses.
Protect Your Storage Tank Investment
Routine API 653 inspections provide valuable information about the condition of your aboveground storage tank, helping owners improve safety, reduce long-term maintenance costs, and maximize asset life.
At Heartland Tank Services, we continue to build on the philosophy established by our founder, Chris Brooks: perform inspections thoroughly, address issues early, and help customers protect their investment for decades to come.