Re: [MW:12059] Roller marks

Dear Experts,

Operating temperature = below 120deg

But it is CRA clad piping spools.

Found visible this defect after blasting.

0.5-0.6mm radial deep/3mm width not sharp corner.

And wall thickness is more than the standard.

On Mon, Aug 1, 2011 at 5:18 PM, Venkateswaran <k.venkateswaran@ionexchange.co.in> wrote:

Dear Navaneethakumar,

 

We faced the same problem. when i was working in one of the neuclear power project for utility water piping(SA106 gr.b) ,we rejected the pipes because the depth of impression is more and visually  we can  able to detect.(after painting it will show more ripple like apperance.)

 

Better reject the pipes.

 

Regars

 

K.Venkateswaran

 

----- Original Message -----

From: sudhakar kuppuswamy

To: materials-welding@googlegroups.com

Sent: Sunday, July 31, 2011 8:33 PM

Subject: Re: [MW:12012] Roller marks

Mr Navaneethakumar,

                  Please can you  give more details like design code,service condition. design temperature and pressure.

if the  service condition are   high pressure&temperature  then these are not acceptable..!!

if it is normal  pressure  and temperature depends on service condition you  can make your  judgement and accepted..!! 

simply rejecting is not a correct solution always !!!!

with regards,

sudhakar.k

On Sun, Jul 31, 2011 at 2:20 PM, navanee kumar <dnkuit@gmail.com> wrote:

Dear Experts,

Is it acceptable roller marks on the pipe?

Please find attached photographs.

Thanks&Regards,
Navaneethakumar.D.
+971505583738

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With regards,
Sudhakar.k

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Thanks&Regards,
Navaneethakumar.D.
+971505583738

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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.