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Time of Flight Diffraction

This ultrasonic inspection technique is commonly performed on welds and weld overlays, piping,
pressure vessels, clad material, storage tanks and structural steel. As fabricated heavy wall vessels and
piping can be thoroughly assessed for fabrication flaws with TOFD.

Applications

The main applications of this service are:

To verify compliance with fabrication requirements for
piping and vessels in accordance to standards such as:
ASME Section I, Code Case 189, or ASME VIII Division 1 and 2
For in-service defect monitoring
For detecting defects during the manufacturing process

Advantages

The main advantages of this service are:

High degree of repeatability
Position and size data for every flaw can be compared for
repeat scans of the same area to track flaw growth or
corrosion rates both generally and for individual pits
Not limited by defect orientation
Precise defect sizing capability
Sensitive to all kinds of defects
Portable, battery operated testing device
On-line, volume inspection
Very fast scanning
Set-up independent of weld configuration
Amplitude insensitive, acoustical coupling less critical

Equipment

Equipped with the following equipmment:

SIUI SYNCSCAN 3 (up to 04 TOFD channels)
SIUI probes and wedges collection for inspection of a large
range of welding configuration and materiel
CPS 02A Chain scanner for PAUT and/or TOFD inspection
Calibration and validation blocs for different materials,
application and thickness range