Regular API-653 inspections are crucial for tank longevity and state regulatory requirements. Let our certified inspectors help you complete this task in a timely and professional manner. In conducting these specific inspections, Heartland Tank Services’ API certified inspectors have the priority of ensuring that your tank is safe, reliable, and fit for continued service.

What is an API 653 Tank Inspection?

This API Standard applies to atmospheric welded or bolted above ground storage tanks that were constructed to the API 650 standard or its predecessor, API 12C. Inspections analyze the tank for whether it is fit for continued service based on criteria analyzing the safety of the structure components.

The components examined during the inspection are the foundation, tank bottom, shell courses, roof, attached appurtenances (nozzles, manways, fill pipes, etc.), ancillary equipment (stairways, railings, etc.), and internal PVC liner if applicable. The examinations involve visual inspection as well as ultrasonic thickness measurements of the shell, roof, and floor. Based on the observations and comparison to API 650 tank requirements, the certified tank inspector will detail any needed repairs, suggested repairs, and the maximum tank or liner fill height.

For more details on Tank Inspections, see our article Determining When You Need A Liquid Fertilizer Storage Tank Inspection.

Monthly Inspections

Monthly inspections should be conducted by the owner of the tank and the results should be recorded in a log. Essentially, you need to visually inspect the outside of the tank for any corrosion, settling of the tank, leaks, or any other type of condition that has changed since the last monthly inspection. Tanks change very slowly over time, so it is important to record any observations to see any pattern and allow you to repair any issue in its infancy instead of permitting it to become a large problem.

Formal API 653 Inspections

Tanks change in ways that cannot be visually detected and that is why formal API inspections are required. Heartland Tank Services’ certified inspectors will used their trained eyes to visually inspect the inside and outside of the tank and use techniques, such as ultrasonic thickness measurements to test the welds and tank plate thicknesses to ensure they are secure.

For liquid fertilizer tanks, no federal requirements exist as to how often an API 650 tank must be inspected. Most states and regulatory agencies require periodic inspections. In line with the recommendations of The Fertilizer Institute, states with inspection requirements have time periods of between 5 and 10 years for inspections. State inspection requirements are usually tied to obtaining or renewing an operation license or permit.

Are you unsure of your state’s tank inspection requirements? Heartland Tank Services tracks all state requirements, so just contact us to find out when you need your tank inspected. To learn more, click here.