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Re: [MW:3920] WPS & PQR clarification

By Materials & Welding
Hi,
 
in my opinion...first you will make a preliminary or proposed pWPS and as per the mentioned variables( please note that VARIABLES, which means they can vary) you will make test coupon. In PQR you will enter the actual (range) values which you will get during the PQR run. and if all the required tests are passed, the pWPS will be amended and it becomes the actual WPS.
 
If you run the PQR first, I can ask you a question " Which procedure you are going to qualify?"
 
regards,
Nandesh

--- On Wed, 30/12/09, mahen dran <cbemahendar@yahoo.com> wrote:

From: mahen dran <cbemahendar@yahoo.com>
Subject: [MW:3917] WPS & PQR clarification
To: materials-welding@googlegroups.com
Date: Wednesday, 30 December, 2009, 12:31 PM

Dear Group
 
 Good day,
--------------------------------------------------------------------------------------------------------------------------------
Still I have confusion on WPS and PQR terms.
 
1. WPS to be created  first , with respect to  selection of process, electrode and current  etc.
2. PQR is developed  after WPS ,by entering the the actual variation  relevant to the WPS.
 
|Corresponding reference numbers are to be entered  in each other.
 
This is the information  from ASME IX codes.
 --------------------------------------------------------------------------------------------------------------------------
But there is a controvercial  statement  from some of our colleques, PQR to be developed first and  Supporiting PQR  reference number is to be entered in the WPS.
 
Please clarify this confusion .
 
 
mahendra
KSA
 
 
 

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