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

To: 'materials-welding@googlegroups.com'

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 3^rd 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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