Re: [Bulk] [MW:3927] WPS & PQR clarification

Before carrying out any welding, we should ensure that the resultant welding meet the requirements of code. That's why Welding procedure (WPS) is established. WPS contains all essential & non essential varibales as per referencing code, Based on WPS the test sample is welded and actual records of all essential variables are recorded. After completion of welding, the sample will go for Testing (tensile test, bend test). After successful completion of all testing, all details (welding variables) will be recorded on a form, that is called as Procedure qualification record (PQR).

 

PQR is actual welding record. This PQR  can be used to support many WPS.

 

With only Qualified WPS, we can go ahead with welding.

 

Hope this is clear.

 

Mhaskar Aly

Kuwait.

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From: Chaitanya Purohit <chaitanya_purohit@yahoo.co.in>
To: materials-welding@googlegroups.com
Sent: Wed, December 30, 2009 5:01:18 PM
Subject: Re: [Bulk] [MW:3926] WPS & PQR clarification

In simple words in construction language I can explain WPS / PQR as follows....

there will be Drawing approved for Construction = WPS prepared in initial stage
Construction process as per approved Drawing = Qualifiying PQR and Testing
As built Preparation and using the approved drawing for Proto type items = Modified WPS based on PQR data, used during welding of similar welds in future

Hope I made it clear....

Regards.
C. K. Purohit
Eng-Tech Weld1
Sr Welding Inspector

2009/12/30 mahen dran <cbemahendar@yahoo.com>

Dear Group

 

 Good day,

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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.

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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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