Advanced Time of Flight Diffraction (TOFD) for Precise Weld Inspection

Qualitest Offshore Inc, based in Guyana, offers advanced Time of Flight Diffraction (TOFD) Ultrasonic Testing Services for offshore and onshore applications. TOFD is a high-resolution ultrasonic inspection technique used to detect, size, and monitor flaws in welds with superior accuracy compared to conventional UT methods.

TOFD uses a pair of probes placed on either side of a weld to transmit and receive ultrasonic waves. The diffraction of these waves at defect tips allows for precise flaw sizing and characterization. TOFD is ideal for critical components such as pressure vessels, pipelines, structural welds, and pressure boundaries in the oil & gas, power generation, and marine sectors.

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Industries and Assets We Inspect

We provide TOFD services for:

• FPSO modules, offshore platform piping, and risers
• Onshore process piping and pressure vessels
• Welded structures in fabrication shops near Georgetown
• Boilers, chillers, and heat exchangers
• Storage tanks and other critical infrastructure

This technique is particularly effective for detecting cracks, lack of fusion, and other weld defects that may not be visible with other NDT methods. TOFD also supports flaw monitoring during plant shutdowns and asset life-extension programs.

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Benefits of TOFD Ultrasonic Testing

• High accuracy in defect detection and sizing
• Permanent record with digital data capture and reporting
• Rapid scanning of long welds and components
• Non-intrusive and requires minimal surface preparation
• Compliance with ASME, ISO, and other global standards

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Why Choose Qualitest Offshore Inc

Our skilled technicians are trained to deliver TOFD inspections under various offshore and onshore conditions. We use state-of-the-art equipment and industry-leading practices to provide clear, reliable data that supports safe operation and regulatory compliance.

We proudly serve the inspection needs of FPSOs, offshore structures, fabrication yards, and industrial facilities throughout Guyana.

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Contact Us Today

Partner with Qualitest Offshore Inc for accurate and efficient TOFD Ultrasonic Testing Services across Guyana’s energy and infrastructure sectors.

📧 Email: guyana@qualitest.gy
📞 Phone: +592 751 6883

Let us help ensure your welds meet the highest safety and quality standards—onshore or offshore.