BS EN 583-6:2008 Non-destructive testing - Ultrasonic examination - Time-of-flight diffraction technique as a method for detection and sizing of discontinuities
This European Standard defines the general principles for the application of the Time-Of-Flight Diffraction
(TOFD) technique for both detection and sizing of discontinuities in low alloyed carbon steel components. It
could also be used for other types of materials, provided the application of the TOFD technique is performed
with necessary consideration of geometry, acoustical properties of the materials and the sensitivity of the
examination.
Although it is applicable, in general terms, to discontinuities in materials and applications covered by
EN 583-1, it contains references to the application on welds. This approach has been chosen for reasons of
clarity as to the ultrasonic probe positions and directions of scanning.
Unless otherwise specified in the referencing documents, the minimum requirements of this standard are
applicable.
Unless explicitly stated otherwise, this standard is applicable to the following product classes as defined in
EN 583-2:
? class 1, without restrictions;
? classes 2 and 3, restrictions will apply as stated in Clause 9.
The inspection of products of classes 4 and 5 will require special procedures. These are addressed in
Clause 9 as well.
The techniques to use TOFD for weld inspection are described in CEN/TS 14751.
The related acceptance criteria are given in prEN 15617.
BS EN 583-6:2008 history
2014BS EN ISO 16828:2014 Non-destructive testing. Ultrasonic testing. Time-of-flight diffraction technique as a method for detection and sizing of discontinuities
2009BS EN 583-6:2008 Non-destructive testing - Ultrasonic examination - Time-of-flight diffraction technique as a method for detection and sizing of discontinuities
1993BS 7706:1993 Guide to calibration and setting-up of the ultrasonic time of flight diffraction (TOFD) technique for the detection, location and sizing of flaws