What is Ultrasonic TOFD?
Time of Flight Diffraction is an Ultrasonic technique developed originally to improve the sizing accuracy of flaws previously detected by other means. Early applications of the technique advanced from solely sizing flaws to applications relying on TOFD for principle detection means, this pioneering technology resulted in major flaws being missed due to poor application and a general lack of understanding by persons operating the equipment.
What are the responsibilities of an individual who is certified to UT TOFD Level 2?
An individual certified to UT TOFD Level 2 has demonstrated competence to perform NDT according to UT TOFD procedures. Within the scope of the competence defined on the certificate, Level 2 personnel may be authorised by the employer to:
- Select the UT TOFD technique for the test method to be used;
- Define the limitations of application of the testing method;
- Translate NDT codes, standards, specifications and procedures into NDT instructions adapted to the actual working conditions;
- Set up and verify equipment settings;
- Perform and supervise tests;
- Interpret and evaluate results according to applicable standards, codes, specifications or procedures;
- Prepare UT TOFD written instructions
- Carry out and supervise all tasks at or below level 2;
- Provide guidance for personnel at or below level 2, and
- Report the results of UT TOFD test