Thursday, November 3, 2011

RE: [MW:12849] Welding Defect Photo

Thank you very much for this resource.  It is very helpful. 
 
I notice what TWI describes as "lack of root fusion" and what ASME B31.3 describes as "incomplete penetration" are in fact one and the same.  
 
In normal service, a girth butt weld designed under ASME B31.3, a weld is allowed 38 mm of "incomplete penetration" for every 150 mm of weld. BUT zero "lack of fusion".  Many RT interpreters under ASME B31.3 confuse the 2 indications, leading to unnecessary rework and an artificially high repair rate.  Can any of our experts speak to this?
 
Warm regards,
 
Darcy Morin    


From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Anil Hegde
Sent: Wednesday, November 2, 2011 11:24 AM
To: materials-welding@googlegroups.com
Cc: harryeng.09@gmail.com
Subject: Re: [MW:12831] Welding Defect Photo

Hope this will help you.


tc

On Wed, Nov 2, 2011 at 3:39 PM, Harry Patel <harryeng.09@gmail.com> wrote:
Dear Sirs,
 
Anybody have welding defect photo like incomplet fusion,incomplete penetration, root concavity in pipe.
 
I hope for your reply.
 
Thank you very much in advance.

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