Dear Suresh,
Thanks a lot for your response please note customer wants this to be repaired by us before dispatch. Now the problem is the vessel is PTFE lined and this lining will be spoiled if we do any weld repair because of heat.
With kind regards,
Vinod Kumar Kataria
GM - Operations
Bliss Anand Private Limited,
92B/93B Sector 5
IMT Manesar,Gurgaon,
National Capital Region Delhi.
India .
Phone : +91-124-4366000 (9 Lines)
Mobile Phone : +91-9560199004
Fax : +91-124-2290884
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Suresh
Sent: Tuesday, February 01, 2011 1:59 PM
To: materials-welding@googlegroups.com
Subject: Re: [MW:9630] Weld Repair on PTFE lined vessel
Dear Vinod Ji ,
Are you sure that you need to go for repair ? I need to ask one question , why TPI was accepted this hydro test If they have been rejected this weld defect . Normally we do hydro after inspected all welds and materials .
As you concerned ,it is SS 316 , and 2 mm WT , As long as that weld joint was prooved it was good sound weld in the hydro @ 10 Bar .I do not think so It is necessary do repair .
If you really need to go for repair then you have to g for re hydro again.(I think so ).
I you go for repair : Please ensure that how much the depth of under cut and use very low current due to 2 mm thick when you are going for fill up ...
Thank you
Suresh
On Tue, Feb 1, 2011 at 1:26 PM, Vinod Kataria <vinod.kataria@blissanand.com> wrote:
It is SS-316, 2” NB vessel design Code is B-31.3
With kind regards,
Vinod Kumar Kataria
GM - Operations
Bliss Anand Private Limited,
92B/93B Sector 5
IMT Manesar,Gurgaon,
National Capital Region Delhi.
India .
Phone : +91-124-4366000 (9 Lines)
Mobile Phone : +91-9560199004
Fax : +91-124-2290884
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Bathula Raghuram (Mumbai - PIPING)
Sent: Tuesday, February 01, 2011 1:06 PM
Subject: RE: [MW:9624] Weld Repair on PTFE lined vessel
What is the code and material of construction?
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Vinod Kataria
Sent: Tuesday, February 01, 2011 12:42 PM
To: materials-welding@googlegroups.com
Subject: [MW:9622] Weld Repair on PTFE lined vessel
Dear All,
Please see the attached photo for the undercut and advice if it is possible to repair this on PTEF lined vessel the vessel. The size is 2” NB and wall thickness is 2mm with inside PTFE lining of 4mm. We have imported this vessel from Germany but during 3rd party inspection it is rejected because of this undercut. The working pressure of this vessel is only 3.5 bar and its successful withstood a hydro test pressure of 10 bar.
Now I request all the expert to please advice if we can repair this undercut if yes than please provide me some guideline or some procedure to carry out this repairing.
Thanks in advance for your kind help.
With kind regards,
Vinod Kumar Kataria
GM - Operations
Bliss Anand Private Limited
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Thanks & Best Regards,
Suresh
Mobile No: 91-92 92 905 905
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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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