Re: [MW:11986] DOT/DWT qualification

If in your case, conditions require simultaneous operation where one welder may affect another welder, I believe you want to go for a WQT (not PQR) with the same conditions.

However if the job is like welding a pipe and welders are already qualified, that doesn't need a new qualification.

It's up to your judgement...!!!

Ramin  Kondori

   QC/Welding Engineer 

         IWE AT 0070

   

On Fri, Jul 29, 2011 at 7:51 PM, abdul khan <abdul_khan2010@yahoo.co.in> wrote:

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.

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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.