Certified Storage Tank Inspection and Testing (NDT)
in the Aurora, IL area

API 653 inspections are required for large, field-erected aboveground storage tanks (ASTs) that are constructed to the API 650 standard. In Aurora, these tanks are commonly used by petroleum terminals, manufacturing plants, chemical facilities, and utilities to store fuel, oil, or hazardous liquids. If your tank is over 75,000 gallons, made from welded-steel construction, has a diameter of 30 feet or more, or a height of 50 feet or more, there's a high likelihood it falls under API 653 requirements.

STI SP001 inspections are typically required for shop-fabricated aboveground storage tanks under 75,000 gallons, often found at gas stations, commercial facilities, and industrial properties. If you're storing oil or hazardous substances in Aurora, you may be subject to the EPA's Spill Prevention, Control, and Countermeasure (SPCC) rules for this inspection.

The frequency depends on the tank size, contents, and regulatory classification. In general, API 653 recommends formal external inspections every 5 years and internal inspections every 10-20 years. STI SP001 inspection frequency is determined by their size, category, and risk factors. We can help determine your specific schedule.

Yes. All our inspectors hold API 653 and STI SP001 certifications and are trained in accordance with industry and regulatory standards. We are fully qualified to perform inspections anywhere in Illinois, including Aurora.

Facilities in Aurora that store 1,320 gallons or more of oil aboveground must comply with the EPA’s Spill Prevention, Control, and Countermeasure (SPCC) Rule. That includes maintaining a certified SPCC Plan with routine inspections of tanks, piping, and secondary containment systems. While the EPA doesn’t mandate exact intervals, it requires that inspections be conducted according to industry standards such as API 653 (for large field-erected tanks) and STI SP001 (for shop-fabricated tanks).

Illinois does not have a separate AST regulatory program for most aboveground tanks, but facilities must still follow applicable fire code and spill prevention guidelines. Additionally, the Illinois EPA and Office of the State Fire Marshal (OSFM) may become involved in the event of a leak or inspection inquiry. Maintaining clear inspection records is key to demonstrating due diligence and compliance with both federal and state expectations.

If your facility in Aurora, Illinois, operates aboveground storage tanks, we provide the required API 653 or STI SP001 inspections and deliver thorough documentation to support your SPCC Plan and regulatory readiness. Our role is to inspect your tanks according to the applicable standards and provide the necessary records to show compliance.