This method employs high frequency sound pulses that are emitted from a transducer; this sound wave is induced in to the material through a probe which is usually in contact with the material. These sound waves propagate through the material, and are reflected back to the probe when they reach an interface. The reflected waves are transmitted back through the probe and connecting leads to a detector which can be either analogue or digital. The sounds waves are then displayed as a series of signals on a monitor and the qualified inspector can measure, and interpret these signals to allow accurate evaluation of the internal structure of the material.

In the PCN certification scheme Ultrasonic Testing is separated into three specific product sectors for certification purposes, these are

* Welds

* Wrought Products (Forgings)

* Castings

The welds sector is further sub divided

into groups, these are

* Plate Butt Welds

* Pipe Butt Welds

* Constructional “T” Joint

* Nozzles

* Nodes

Ultrasonic Testing Welds (Plate) - Level I

    • Ultrasonic testing terminology
    • Basic ultrasonic concepts
    • Ultrasound
    • Principals of ultrasonic testing
    • Flaw detector (operation and use)
    • Defect location and sizing techniques
    • Use of calibration and reference blocks
    • Plotting systems
    • Application of a written instruction
    • Examination of samples, welds, castings and wrought products
    • Report writing and discussion of relevant standards and specifications (BS EN etc.)

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