High-Accuracy Weld Inspection & Flaw Sizing
What Is It
Precision Weld Inspection Using TOFD
Detect, Locate, and Precisely Size Internal Weld Flaws.
Time of Flight Diffraction (TOFD) is an advanced ultrasonic technique that detects defects by analyzing diffracted ultrasonic signals from the edges of a flaw.
It provides accurate depth measurements and detailed digital inspection data - ideal for pipeline welds, pressure vessels, boiler components, and critical fabrication.
TOFD is ideal for:
- Pipeline welds
- Pressure vessels
- Boiler components
- Structural welds
- Critical fabrication
Why TOFD
Why Choose TOFD?
High Sensitivity
Detect planar defects such as cracks and lack of fusion.
Accurate Sizing
Measure defect depth and dimensions precisely.
No Radiation
A safer alternative to radiography in many inspection environments.
Fast Results
Digital imaging enables quick analysis and reporting.
How It Works
Our TOFD Inspection Method
Inspection Planning
Review component geometry, weld configuration, and inspection requirements.
Probe Setup
Position and calibrate the TOFD probes.
Ultrasonic Scanning
Capture diffraction signals from potential defect edges.
Data Analysis
Interpret signals and determine defect location and size.
Digital Reporting
Provide inspection images, measurements, and recommendations.
Our Services
Our TOFD Inspection Services
Weld Flaw Detection
Identify cracks, lack of fusion, slag, and other internal discontinuities.
Pipeline Weld Inspection
Inspect seam and girth welds in critical pipeline systems.
Pressure Component Inspection
Assess boilers, vessels, headers, and other pressure parts.
Integrated NDT
Combine TOFD with PAUT or conventional UT for broader coverage.
Also supports shutdown inspections and life-assessment programs.
Applications
Applications of TOFD Testing
Pipeline & Header Welds
Inspect critical welded sections across pipelines and boiler headers.
Pressure Vessels
Assess weld integrity in vessels and pressure-containing equipment.
Storage Tanks
Inspect welded joints across tank fabrication.
Heavy Fabrication
Weld inspection for large fabricated structures and components.
Power Plant & Oil & Gas Equipment
Inspect welds across power generation and oil & gas assets.
Why IRC
Why IRC Engineering Services?
25+ Years in Advanced NDT
Proven experience in critical inspection applications.
Certified Experts
ASNT Level II/III professionals trained in advanced ultrasonic techniques.
Code-Compliant Testing
Inspection performed in accordance with applicable industry standards.
Pan-India Reach
Field inspection support across India.
Clear Reporting
Detailed flaw sizing, digital records, and actionable recommendations.
Client Testimonials
What Our Clients Say
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