Re: [MW:10800] weld joint leak failure @ shoe support

Dear Hafiz,

Grind clean the surface and perform grp lamination to a thickness of around 6mm thk.(considering fluid pressure <= 15 bar)

Regards

Anish Dev. S

On Thu, Apr 21, 2011 at 3:02 PM, Hafiz Ali Alvi <alimalvi300@hotmail.com> wrote:

Dear Raghuram,

Pipe material is ASTM A106, containing process fluid and Hot Fuel Oil. Actually extent of failure is also not very clear to us because they have installed clamps on leak points. Some are below pipe support and some are on elbows and fittings.

Please see attached picture for reference.

Regards.

Date: Thu, 21 Apr 2011 16:44:39 +0530
Subject: Re: [MW:10779] weld joint leak failure @ shoe support
From: raghurambathula@gmail.com
To: materials-welding@googlegroups.com

what is the material grade, and fluid? can you more details about the type and extent of defects.

On Thu, Apr 21, 2011 at 3:45 PM, Hafiz Ali Alvi <alimalvi300@hotmail.com> wrote:

Dear All,

We have a problem of weld joint leak failure of insulated line on shoe support. So far we recommend installation of pipe clamps to stop leakage. Pipe sizes are 1" and 2" for total 8 locations.
Now my question is:

1) Is it permissible to just grind of the location of leakage on straight pipe and reweld? Because the other solution is to remove effected pipe and add new pipe piece and reweld support.
2) Is it permissible for socket weld joints (elbow or olet) to grind the existing weld and reweld the joint again?

Regards.

Hafiz Ali Alvi

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