Re: [MW:19875] RE: 19867] PWHT on P91 support (Pad +Shoe)

Dear All

As per my opinion, It is Acceptable with Normal Clause of Heat Treatment, it was not in contact with P 91 material ,  So Not  Need to Heat treatment of CS.

but it is Actually Depend upon thickness of weld Bead of Carbon Steel Plate with P91 Material   and  More on  Heat  which Was Produced During Carbon Steel welding Pad .

But Geometry show that , if  you do Heat Treatment only to P91 material it will surely effect on  CS Support , so it is better you do Heat treatment to Whole Assembly include CS support To Avoid Stress Concentration .

Dear friend :Please Put one thing in mind ,Heat Treatment always show benefit to any Material within if  it 's within Temperature range so Do not worry .

Dear jhen: I am Looking your response on my  explanation .

Regards

RItesh Rajput 

Sr.Manager 

United Piping Solution Group

On Thu, Jan 16, 2014 at 9:14 AM, Babur Khan <mbabur.bwp@gmail.com> wrote:

Dear Sumod,

As per attached figure no need PWHT for CS tissue because no direct contact with (P91) material.

  

On Wed, Jan 15, 2014 at 7:54 PM, John Henning <jhenning@deltak.com> wrote:

Grade 91 in the as welded condition is susceptible to stress corrosion cracking – you decide.

 

John A. Henning

Welding & Materials

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of sumod s
Sent: Wednesday, January 15, 2014 5:54 AM
To: materials-welding
Subject: [MW:19867] PWHT on P91 support (Pad +Shoe)

 

Dear experts,

PWHT is done on pipe(P91) to pad (P91) weld. Is it required to do PWHT on pad (P91) to support shoe (CS) fillet weld. Please refer the attachment for details.

Sumod

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Regards

BABUR KHAN LASHARI

Welding Inspector

Mob: +966 (0) 56 2179280

         +92334 6186285  

Skype Id : babur.lashari

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