Friday, July 29, 2011

Re: [MW:11982] DOT/DWT qualification

Dear Prasu,
 

The simple answer read it carefully.

 

Essential variable: The variable which affects the properties of the weld metal is known as essential variable. Change in essential variable requires requalification of PQR.

 

Welding Technique is Non essential variable and hence will not affect the properties of the weld metal and no requalification of PQR is required.

 

The DOT/DWT technique it will not affect the properties of the weld metal and hence Requalification of PQR is not required nor the welders Requalification required if welders are qualified for suitable position and thickness range of base metal.

AS PER MY KNOWLEDGE

 

Hope the answer to the question

 

Regards

ABDUL JABBAR KHAN  

 
normally for requalification of PQR the
--- On Fri, 29/7/11, Prasu Cutie <pracuty@gmail.com> wrote:

From: Prasu Cutie <pracuty@gmail.com>
Subject: [MW:11976] DOT/DWT qualification
To: materials-welding@googlegroups.com
Date: Friday, 29 July, 2011, 4:57 PM

Dear Experts,
Is welder qualification & PQR qualification is required for DOT/DWT technique????? *(As per Sec.IX)

DOT-- Double operator technique
DWT-- Double welder technique

Awaiting for reply!!!!!!!!!

Regards
prasu
--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
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.

--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
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.

No comments:

[MW:34820] RE: 34813] Clarification in Rate of heating and cooling.

Hello,   Please see the response below.   Regards.   P. Goswami, P. Eng, IWE.   From: materials-welding@googlegroups.com <materials-weld...