RE: [MW:22800] leak in welded joint

Agree with Georgios.

 

As complement you could inspect your welded joint with advance ultrasonic testing (phased-array). This is a volumetric inspection method too, and with correct transductor and personnel, you  could have a good precision to evaluated and categorize the indication using acceptable and non-acceptable criteria from B31.3

 

regards

 

Miroslav Tadic
Integrity Enginner
CEE
Gerencia de Producción - Mantenimiento
YPFB Chaco S.A.

 

De: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] En nombre de george.dilintas@gr.bureauveritas.com
Enviado el: martes, 03 de febrero de 2015 04:10
Para: materials-welding@googlegroups.com
Asunto: Re: [MW:22795] leak in welded joint

 

The detection of defects by RT is limited by a certain number of factors like:

Density
Penetration
Geometrical unsharpness
 
You have to thoroughly review your RTs for Code compliance
best regards

Dr. Georgios Dilintas

Authorized Nuclear Inspector
Authorized Inspector Supervisor

I&F REGIONAL TECHNICAL MANAGER
BUREAU VERITAS PIRAEUS - GREECE

Tel: +30 210 40 63 113 /4 /5
Fax: +30 210 40 63 118
Cell: +30 69 44 64 62 04


"'raouf salhi' via Materials & Welding" ---03/02/2015 05:10:16---Dear experts; We have a skid of piping 10 " and 2 " API 5L welded and inspected according B 31.3.

From: "'raouf salhi' via Materials & Welding" <materials-welding@googlegroups.com>
To: "materials-welding@googlegroups.com" <materials-welding@googlegroups.com>
Date: 03/02/2015 05:10
Subject: [MW:22791] leak in welded joint
Sent by: materials-welding@googlegroups.com

---

Dear experts;

We have a skid of piping 10 " and 2 " API 5L welded and inspected according B 31.3.

we made already the internal hydro test (  two houres at 375 bar) in workshop and the result was satisfactory , we repeat the same hydrotest in the client workshop and we found a leak in one 2 " joints.

the RT report for this weld mention only undercut ( acceptable).

how we can explain this ?

regards

SALHI Raouf
QA/QC Engineer

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