RE: [MW:22799] leak in welded joint

Make a Failure Analisys, include macro and micrography of failed zone and fracture surface and all evidence available. Then try to find the failure mechanisms among all the tasks performed in the construction, transportation and test, in this order: test, transportation, construction/assemble/welding, materials.

Example: just imagine that the skid was lifted by the 2" pipe wich joint failed.

 Regards,
César Alexis Viteri Pérez

---

Date: Mon, 2 Feb 2015 13:50:25 +0000
From: materials-welding@googlegroups.com
To: materials-welding@googlegroups.com
Subject: [MW:22791] leak in welded joint

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

--
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
Visit this group at http://groups.google.com/group/materials-welding.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/581386843.973075.1422885025165.JavaMail.yahoo%40mail.yahoo.com.
For more options, visit https://groups.google.com/d/optout.