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

Fabian

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

 
 Reply 
 
Arman
Engineering,
Turkey, Joined Oct 2014, 39

Arman

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

Fabian,

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
Arman

 
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