Thursday, February 5, 2015

[MW:22810] Re: leak in welded joint

Hello,

Defects can survive an hydrotest, then it can grow and appears as a leak, as César Vitero wrote some defects could grow during logistics or assembling.

Sergio Muñoz
IWE-IIW
http://Weld-ING.tk

El lunes, 2 de febrero de 2015, 22:10:12 (UTC-5), raouf salhi escribió:
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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