Wall Thickness Measurement
Wall thickness measurement determines the remaining material thickness of piping, vessels, tanks, and other components affected by corrosion or erosion.
What this term means in maintenance
Wall thickness measurement determines the remaining material thickness of piping, vessels, tanks, and other components affected by corrosion or erosion.
Why thickness is measured
Measurements help identify:
- Corrosion
- Erosion
- Remaining life
- Minimum-thickness risk
- Inspection interval
- Repair need
Practical example
Ultrasonic readings are taken at fixed corrosion-monitoring locations on a process pipe.
Trending
Consistent locations and methods allow corrosion rate and remaining life to be estimated.
Acceptance
Results should be compared with approved minimum thickness, design requirements, and engineering assessment.
Common mistake
Taking readings at different uncontrolled points makes year-to-year trends unreliable.
Related concepts
Related maintenance terms
Keep exploring connected CMMS, reliability, and maintenance planning terms.
Ultrasonic Testing
Ultrasonic testing uses high-frequency sound waves to detect internal flaws or measure material thickness.
Corrosion Under Insulation
Corrosion Under Insulation is external corrosion that develops beneath thermal insulation and may remain hidden until significant damage occurs.
Static Equipment
Static equipment is process or facility equipment without a primary rotating mechanism, such as vessels, tanks, piping, structures, and heat exchangers.
Glossary FAQs
- Why is wall thickness measured?
To monitor corrosion, erosion, minimum thickness, remaining life, and repair need.
- What method is commonly used?
Ultrasonic thickness measurement.
- Why must locations remain consistent?
Different points can show different thickness and distort corrosion trends.