CEN - PREN 17290
Non-destructive testing - Ultrasonic testing - Examination for loss of thickness due to erosion and/or corrosion using the TOFD technique
|Publication Date:||1 September 2018|
|ICS Code (Non-destructive testing):||19.100|
This document specifies the application of the time-of-flight diffraction (TOFD) technique in testing of metals for quantifying loss of thickness due to erosion and/or corrosion.
This document applies to all types of corrosion or erosion damage, particularly those defined in ISO 16809.
This test applies to unalloyed or low-alloyed steel materials.
It applies to components with a nominal thickness ≥ 6 mm. For smaller thicknesses feasibility tests will be performed to validate the technique. For other materials, feasibility tests are essential too.
The TOFD technique can be used here as a stand-alone technique or in combination with other nondestructive testing techniques, during manufacturing and for testing in-service, in order to detect material loss caused by erosion and/or corrosion.
This technique is based on analysis of TOFD images established using reflected and/or diffracted ultrasonic signals.
This document does not specify acceptance levels.