Certified Storage Tank Inspection and Testing (NDT)
in the Fitchburg, MA area

API 653 inspections are required for large, field-erected aboveground storage tanks (ASTs) that are constructed to the API 650 standard. In Fitchburg, 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 Fitchburg, 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 Massachusetts, including Fitchburg.

Under 40 CFR 112 (SPCC Rule), facilities that store 1,320 gallons or more of oil in ASTs (≥ 55 gal per container) and are likely to discharge into navigable waters must maintain an SPCC Plan. This includes conducting documented inspections of tanks, piping, valves, and secondary containment systems.

502 CMR 5.00 (via the MA State Fire Marshal) requires ASTs over 10,000 gallons (excluding water-only tanks) to obtain state permits and undergo inspections by a qualified, certified inspector as part of the five‑year use-permit renewal process. The regulation mandates inspections in line with an approved standard (e.g., API 653 or STI SP001), certified by a “Qualified Tank Inspector,” such as an API 653 or STI SP001 certified professional. Records must be submitted to the State Fire Marshal within 14 days of inspection.

We support Fitchburg-area facilities operating aboveground storage tanks (ASTs) by performing certified API 653 and STI SP001 inspections—and by providing the detailed reports and documentation required to demonstrate compliance with EPA SPCC rules and Massachusetts AST regulations.