STI SP001 – Above Ground Storage Tank Inspection

STI SP001 – Above Ground Storage Tank Inspection

The STI SP001 standard contains inspection and evaluation criteria for shop-built and small field-erected tanks not governed by API 653 codes, but require regular inspection and maintenance to remain compliant. This includes storage tanks up to 50,000 gallons (189,271 liters), including tanks that are portable, skid-mounted, liner-equipped, double-walled, and partially buried. This standard also covers the inspection of smaller portable containers such as 55-gallon drums, intermediate bulk containers or (IBC’s), and other container that are constructed of metal or plastic. Inspections are required at recommended intervals to remain compliant with the code and environmental regulations.

Equipment Covered

  • Double-Wall Steel Tanks
  • Single-Wall Steel Tanks
  • Vertical Atmospheric Storage Tanks
  • Horizontal Drum Type Steel Tanks
  • Underground Storage Tanks
  • Portable Containers

Services Offered

  1. Formal External Inspection
  2. Formal Internal Inspection
  3. Ultrasonic Thickness Testing (UTT)
  4. Automated Ultrasonic Thickness Testing (AUT)
  5. Corrosion Mapping
  6. MFL/MFE Floor scan Inspection
  7. Monthly and Annual Checklist Inspections
  8. Portable Container Checklist Inspections
  9. Leak Testing
  10. Leak detection
  11. Seal inspection
  12. Post repair
  13. Dike Survey
  14. Spill Prevention Control and Countermeasure (SPCC) Plan Development and Review
  15. Corrosion rate and remaining life evaluations
  16. Fitness for Service (FFS) Evaluations
  17. Risk Based Inspection (RBI)
  18. Inspection Work Plan (IWP) Development and execution
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