Tube Inspection
Tube Inspection
Tube Inspection is essential for maintaining the reliability and efficiency of heat exchangers, boilers, condensers, and fin-fan coolers, where tube failures can lead to leaks, cross-contamination, unplanned shutdowns, and costly repairs. At Assessfie, our advanced tube inspection services detect corrosion, erosion, pitting, cracking, and wall thinning at an early stage—helping operators extend equipment life and maintain safe operations.
Why Tube Inspection Is Critical
Tubes operate under high pressure, temperature, and corrosive environments. Even minor defects can result in significant operational losses. Regular tube inspection enables early detection of degradation, prevents sudden failures, and supports informed maintenance and replacement decisions.
How Tube Inspection Works
- Tubes are cleaned and prepared for inspection where required.
- Suitable inspection techniques are selected based on tube material, diameter, and service conditions.
- Probes are inserted into the tubes to scan internal and external conditions.
- Inspection data is analyzed to identify defects, measure wall loss, and assess tube integrity.
- Certified inspectors deliver detailed reports with recommendations for repair, plugging, or replacement.
Technologies & Techniques We Use
Magnetic Flux Leakage (MFL)
- Used primarily for ferromagnetic tubes.
- Detects corrosion, pitting, and metal loss by measuring magnetic flux leakage.
- Enables rapid screening of large tube bundles.
Remote Field Testing (RFT)
- Ideal for ferromagnetic tubes such as carbon steel.
- Detects internal and external corrosion, wall thinning, and cracking.
- Effective even in the presence of tube supports.
Near Field Testing (NFT)
- Specialized technique for fin-fan cooler tubes.
- Sensitive to internal corrosion and pitting near the tube surface.
- Minimizes interference from fins and tube supports.
Internal Rotary Inspection System (IRIS)
- Ultrasonic-based technique providing highly accurate, quantitative wall thickness measurements.
- Produces detailed cross-sectional profiles of tube condition.
- Often used for confirmatory inspections and fitness-for-service assessments.
Tube Inspection Applications
Our tube inspection services support a wide range of industrial applications, including:
- Heat Exchangers & Condensers
- Boilers & Steam Generators
- Fin-Fan Air Coolers
- Refineries & Petrochemical Plants
- Power Generation Facilities
- Chemical Processing Units
Benefits of Our Tube Inspection Services
- Early detection of tube degradation and corrosion
- Prevention of leaks and unplanned shutdowns
- Optimized maintenance and tube replacement planning
- Improved equipment efficiency and reliability
- Reduced downtime and lifecycle costs
- Compliance with inspection and safety standards
Standards & Regulations
Our Tube Inspection services comply with recognized international standards and industry codes to ensure accurate, repeatable, and globally accepted results.
International Standards
- ISO 15548 — NDT equipment performance verification
- ISO 9712 — Qualification and certification of NDT personnel
ASTM Standards
- ASTM E376 — Measurement of coating thickness (where applicable)
- ASTM E309 — Eddy current examination of tubular products
- ASTM E1004 — Eddy current testing of tubing
Industry-Specific Standards
- API 510 — Pressure vessel inspection
- API 660 — Shell-and-tube heat exchangers
- API 661 — Air-cooled heat exchangers
- ASME Section V — NDT requirements
Personnel Qualification Standard
- SNT-TC-1A — Qualification and certification of NDT personnel
