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Re: [MW:23285] Multiple WPS from single PQR

By Materials & Welding
Inaddition to what George has highlighted

1. For a dissimilar thickness weld between Base Material 6mm thick to 19 mm thick example like a shell to dished End and a skirt to a shell.
 
Thanks & Regards
J.Gerald Jayakumar
0091-9344954677

From: "george.dilintas@gr.bureauveritas.com" <george.dilintas@gr.bureauveritas.com>
To: "Ri@z" <materials-welding@googlegroups.com>
Sent: Thursday, August 6, 2015 6:15 PM
Subject: Re: [MW:23280] Multiple WPS from single PQR

Many advantages like:
1. Partial penetration welds
2. Combination with other processes 
3. Welding of small bore piping with GTAW


Sent from my BlackBerry 10 smartphone.


From: Ri@z
Sent: Πέμπτη, 6 Αυγούστου 2015 - 13:24
To: Materials & Welding
Reply To: materials-welding@googlegroups.com
Subject: Re: [MW:23276] Multiple WPS from single PQR


Thank You For reply


My humble doubt is, 1 ) weld metal deposition is restricted to be max 6 mm for gtaw, and 13 mm for SMAW, what is the advantage of having 19 mm as  Qualified base metal thickness. For separate process there is no advantage of Base metal Qualified as per QW-451 ie 1.5 to 2T

AM I RIGHT ???


On Thursday, 6 August 2015 14:02:14 UTC+5:30, George Dilintas wrote:
Backing is a welders qualification essential variable. For PQR it is a nonessential one.
The Base metal qualification range is the same for the 3 cases

Sent from my BlackBerry 10  smartphone.
From: 'Bijay' via Materials & Welding
Sent: Πέμπτη, 6 Αυγούστου 2015 - 09:55
To: materials-welding@googlegroups com
Subject: Re: [MW:23273] Multiple WPS from single PQR

But for SMAW single process you have to give Metal baking as the GTAW weld Metal act as metal baking.

From:"Ri@z" <riaz.r...@gmail.com>
Date:Thu, 6 Aug, 2015 at 11:58 am
Subject:[MW:23271] Multiple WPS from single PQR



Dear Sir,,


I have one PQR with 3 mm GTAW weld deposit and 6.5 mm SMAW deposit. Base metal thickness is 9.5 mm and impact is not required.

Please correct me if any of the following is NOT correct as per Sec IX

1) Combined Process (GTAW + SMAW) up to a thickness of 1.5 to 19 MM (2T)

2( Single process wps of SMAW with weld metal thicjness 13 MM and qualified base metal thickness is 1.5 mm to 13 mm

3)  Single process WPS of GTAW  with weld metal thickness of 6 MM and Qualified base metal thickness is 1.5 to  6 mm




Please help!!

Riaz 

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