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Dr. Yossi SHOEF
NDT Inspector
Gabi Shoef Ltd, Israel, Joined Dec 2005, 19

Dr. Yossi SHOEF

NDT Inspector
Gabi Shoef Ltd,
Israel,
Joined Dec 2005
19
17:20 Apr-14-2014
Acceptance levels for UT

Could anyone explain what is the X Value in the acceptance graphs of EN 1712 OR EN 11666. What is the meaning of 1.5 thickness for example?

Mario Talarico
NDT Inspector,
Italy, Joined May 2010, 423

Mario Talarico

NDT Inspector,
Italy,
Joined May 2010
423
21:41 Apr-14-2014
Re: Acceptance levels for UT
In Reply to Dr. Yossi SHOEF at 17:20 Apr-14-2014 (Opening).

Yossi,
in EN 1712: is the length dimension of indication , measured along the longitudinal axis of the weld; so also represents the longitudinal axis of the weld in geometric configuration figures ('Reference System' x, y, z).
In EN 11666 indicates the longitudinal axis of the welding.

In the acceptance tables the length scale is represented in units thickness (t): so if the thickness is 30 mm then 1,5 t is 45 mm; 0.5 t is 15 mm.
In En 1714 and EN-ISO 17640 the definition of t is “thickness of base material (thinner element)”, while in EN 1712 and EN ISO 11666 't' is generic. It is not clear how the definition of En 1714(17640) is compatible with the EN 1712(11666).
To complete, in EN 1714, X is the distance between '0 ' point and the beginning of the indication in the longitudinal axis X (so also represents the axis). The same for EN-ISO 17640.
Normally a 'X' field is created in the report to enter the distance from indication to '0 'point and a field dx for the indication length (the same for the other two axes: ±Y, with dy if necessary; Z, with dz if necessary) as in EN 1714-17640, and all usually understand.
Greetings
Mario

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