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Technical Discussions
Engineering, Integrity and NDT of Equipment Static
TP Group S.A, Colombia, Joined Apr 2011, 6


Engineering, Integrity and NDT of Equipment Static
TP Group S.A,
Joined Apr 2011
04:39 Aug-09-2019
Phased Array Scan C - Corrosión

Somebody know if any standard ASTM or ISO BS about the inspection corrosion by Phased Array method Scan C and have you information about accuracy ou minimum detection of loss wall thickness with equipment as MX2 example 0.1mm etc

Turkey, Joined Oct 2014, 39


Joined Oct 2014
06:46 Aug-11-2019
Re: Phased Array Scan C - Corrosión
In Reply to Fabian at 04:39 Aug-09-2019 (Opening).


I have same concern about standards referring to in-service inspection specifically corrosion mapping, I searched for that but it was not successful. API is developing a recommended practice (API RP 586) which is about application of advanced NDT methods of in-service inspection, but unfortunately is not released yet.

Accuracy of C-SCAN corrosion mapping directly depends on PA probe frequency, other factors such as surface condition, painting etc also can affect this.
Using a 5 MHz PA probe in normal condition, an accuracy of less than 1 mm is easily achievable.
Hope it helps


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