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Qualitech
Inspection Solutions

API - 653 Inspection

The American Petroleum Institute (API) 653 standard Covers the maintenance, inspection, alteration and repair of steel, field-erected aboveground storage tanks (ASTs) built to API 650 or API 12C standards. The inspection program examines four main tank components: the roof and it structure, shell, bottom and the tank foundation. These components directly affect the tank’s structural integrity and liquid storage capability.

QUALITECH NDT INSPECTION methods

  • A-scan ultrasonic thickness measurements.
  • B-scan Advanced ultrasonic imaging for tank bottom plate
  • Magnetic Flux Leakage technique for tank bottoms.
  • Vacuum box testing for bottom plate lap welds and shell to bottom weld.
  • Magnetic Particle for shell to bottom welds.
  • Visual inspections are performed by experienced API 653 qualified inspectors.
  • Geometric Optical Measurements.
  • Pit Gauging.
comprehensive api 653 inspection
API-653 Inspection
API 653 INSPECTION

Understanding your assets in depth

A licensed inspector since 1999, Qualitech has incomparable experience with hundreds of API 653 inspections. Our engineering evaluation includes:
  • Repair recommendations
  • Next Inspection Interval calculations
  • Shell & Bottom Settlement evaluations.
  • Shell Out of Roundness
  • Remaining life for Bottom, Shell, & Roof
  • Shell Safe fill height calculations
  • Other evaluations as per API 653 4.3.3.5 guidance
  • Evaporative Loss calculations as per API- Chapter 19
  • Floating roof primary & secondary seals inspection as per 40 CFR part 60
Reach out for more information

Disclose flaws and defects in the structure of the tank caused by corrosion, tank subsidence, or historical incorrect repairs.

Identify areas of risk and repair before a leak occurs.

Comprehensive tests and inspections enable full compliance with guidelines and regulations.

Engineering Calculations for Remaining Shell Life, and Remaining Thickness for Floor and Roof.

experience of over 20 years

proven technology

overall recommendations

One step ahead

Our line of products

Guided Wave Testing

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Guided Wave Testing

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BlueSky®️ Primary & Secondary

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Storage tank primary and secondary seal.