RE: [MW:13767] Incomplete pen vide B31.3 2004 Ed

Hi

 

Ref B31.3

 

The applicable NDT method for this defect is VT and RT.  If it is an open joint check the depth of IP by visual. But in RT you can approximately identify( Not measure) the depth by difference in contrast relative to the IQI contrast at that location

BR

M.Vijayan

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Shashank Vagal
Sent: Tuesday, February 21, 2012 2:12 PM
To: materials-welding@googlegroups.com
Subject: Re: [MW:13764] Incomplete pen vide B31.3 2004 Ed

 

Thanks, Manpreet and others, It was captured during RTFI and the lengths were 12 mm and 25 mm at 2 different locations. I have already given both as repair. But the contractor came with this table which shows Category M fluid, girth weld, weld imperfection ' Incomplete Pen' is referred to as B. On the following page, B refers to "depth" of IP to between ≤1mm and ≤ 0.2Tw (whichever is lower is implied) and not length. Now, that is one tough task to determine depth of an IP, by RT at least. In Cum Length, < 38 mm in 150 mm, we have acceptance. So, is my judgement correct or no? Best regards, Shashank Vagal --- On Tue, 21/2/12, manpreet <manpreetsin88@rediffmail.com> wrote: From: manpreet <manpreetsin88@rediffmail.com> Subject: Re: [MW:13762] Incomplete pen vide B31.3 2004 Ed To: materials-welding@googlegroups.com Date: Tuesday, 21 February, 2012, 1:49 PM Hi, As per ASME B31.3, acceptance criteria for incomplete penetration is:- between ≤1mm ann ≤0.2Tw was it caught by Radiography or ultrasonic testing? If UT then there is possibility that what you are referring to "incomplete penetration" might actually be "Lack of sidewall fusion" for which table 341.3.2 Note 7 states that "tightly butted unfused root faces are unacceptable". Regards Manpreet Singh On Tue, 21 Feb 2012 09:11:51 +0530 wrote >Gents, REF: B31.3 Ed 2010, Table 341.3.2 Weld joint of 8" dia x 7 mm thick 106 Gr B, Fluid Service Normal, Category M. Welding Process: GTAW + SMAW. Is incomplete pen allowed as per this code to any extent ? Please advise. Regards, Shashank Vagal -- > To post to this group, send email to materials-welding@googlegroups.com > To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com > For more options, visit this group's bolg at http://materials-welding.blogspot.com/ > The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents. >   Follow Rediff Deal ho jaye! to get exciting offers in your city everyday. -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.

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