Title 22, SPCC, SWPPP, AST
                   348 CONCORD DRIVE
               MENLO PARK, CA 94025
                             866 388 0404

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STI SPOO1 Tank Inspections

The Steel Tank Institute, STI, Standard for the Inspection of Aboveground Storage Tanks, SP001, is the endorsed standard for the inspection of factory built storage tanks listed in CFR 40 Part 112 under the SPCC regulations. The standard is risk based which means that tanks whose failure causes greater damage to the environment are inspected with increased frequency and detail. The inspection standard defines the frequency and detail by three categories of risk and four categories of size. It also specifies inspection standards and frequency for containers used to transport hazardous materials.


In addition to defining the inspection of the tanks, it also defines the inspection criteria for the tanks ancillary equipment, pumps, valves, vents and piping.