Re: [MW:19076] Tank annular bottom plate welding visual inspection

Dear sir, can we check by RT of that area and compare density of defect to annular plate? B,se UT phase array is not in the contract. As 3mm backing strip we may got complete penetration at annular plate.
Sent from Mobile

Jorge Mejía Lema <jmejialema@gmail.com> wrote:

Ok!! Mr. Sam, I will recommend to do UT Phase Array, to discover if the annular plate has a good welding thickness. The backing is only to get a welding penetration.

Regards,

jml

2013/10/24 Sam <onlyprivate2007@gmail.com>

dear experts,

During weld visual inspection of storage tank annular bottom plate butt joints welding with backing strip, i found some length (50 mm) with excess penetration and Burn through (root concavity) on backside (soil side). it means it is on backing strip side.

annular plate thickness = 10 mm

backing plate thickness = 3 mm

1) may be burn through defect is only in backing strip or it may extend up to annular plate ?

2) i have removed excess penetration from backing strip side. we can see some fusion problem at backstrip. but is there chance it will extend upto annular plate ?

How will we evaluate this defects ?accept or reject. because we may got full penetration for annular plate and defects are in only backing strip. it is very difficult to remove full joint and reweld with new backing strip.

regards,

sam.

--
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/
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
 
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.
---
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.
For more options, visit https://groups.google.com/groups/opt_out.

--
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/
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
 
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.
---
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.
For more options, visit https://groups.google.com/groups/opt_out.

--
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/
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
 
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.
---
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.
For more options, visit https://groups.google.com/groups/opt_out.