dear experts
I have two PQR both of them according to section ix the first as smaw and the secod PQR as gtaw my inquiring can I combined them in single production joint .
in addition I have gmaw PQR can I combined with smaw or gtaw or both .
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I have two PQR both of them according to section ix the first as smaw and the secod PQR as gtaw my inquiring can I combined them in single production joint .
in addition I have gmaw PQR can I combined with smaw or gtaw or both .
On Monday, October 21, 2013 5:23 PM, John Henning <jhenning@deltak.com> wrote:
The last statement, highlighted in red, is horse hockey. If you can complete a joint with a process, you can complete a portion of the joint with a process. Combining processes from different WPSs in a joint is an efficiency decision. Typical is doing one PQR with a coupon with GTAW only and a second PQR coupon with another process, typically a fill process, (SAW, GMAW, FCAW, SMAW) – there is no practical reason why these two cannot be combined.
Per Section IX, the WPSs do not even have to be combined into a single PQR - See QW-220.4 Combining of Welding Procedures, subsection (a) : " More than one WPS having different essential, supplementary essential, or nonessential variables may be used in a single production joint. Each WPS may include one or a combination of processes, filler metals, or other variables. . . ."
Don't confuse some customer's requirements with Code.
John A. Henning
Welding & Materials
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Saravanan Sornam
Sent: Monday, October 21, 2013 5:28 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:19023] Combination of two welding process with diffrent PQR
Sent: Monday, October 21, 2013 5:28 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:19023] Combination of two welding process with diffrent PQR
Hi ,
Since you are going to weld tank butt joints with SMAW and SAW process , you write a WPS with combination as per QW 200.4 (b) and check whether you have SMAW PQR with min. 13 mm thk plate qualified.
Also ensure any limitations given in your client spec for combination process requirements.
Talk to your client about your proposal before taking decision .
If they not agreed and not complying ASME - IX , then you have to qualify SMAW and SAW together.
FYI, simply you cannot combine 2 different welding process for a single joint without having proof.
Regards
Saravanan
Korea
Since you are going to weld tank butt joints with SMAW and SAW process , you write a WPS with combination as per QW 200.4 (b) and check whether you have SMAW PQR with min. 13 mm thk plate qualified.
Also ensure any limitations given in your client spec for combination process requirements.
Talk to your client about your proposal before taking decision .
If they not agreed and not complying ASME - IX , then you have to qualify SMAW and SAW together.
FYI, simply you cannot combine 2 different welding process for a single joint without having proof.
Regards
Saravanan
Korea
On Oct 21, 2013 5:53 PM, "mervin dio" <mervin_kid@yahoo.com> wrote:
sir,
Yes we are going to use this combination process and we are going to use this in tank storage the actual thicknes to be weld is 12mm plate.
I have a doubt because this two welding process is approve with separate WPS & PQR.
MERVIN C.DIO
QC.WELDING INSPECTOR
AL SUWAIKET SUPPORT
QC.WELDING INSPECTOR
AL SUWAIKET SUPPORT
From: Saravanan Sornam <saravanshyla@gmail.com>
To: materials-welding@googlegroups.com
Sent: Monday, October 21, 2013 2:34 AM
Subject: Re: [MW:19012] Combination of two welding process with diffrent PQR
To: materials-welding@googlegroups.com
Sent: Monday, October 21, 2013 2:34 AM
Subject: Re: [MW:19012] Combination of two welding process with diffrent PQR
Hi Mervin ,
Yes you can combine these 2 Processes, provided you have to fulfil ASME-IX, QW 200.4 (b) requirements .
In your case , if you want to use SMAW on root side, the SMAW 's PQR basemetal thk should be Min. 13 mm and you should have used SMAW until full thickness of basemetal .
Also ensure you can access inside for back gouging or grinding to remove slags after you weld SMAW on root side in Ur production joint.
What is Ur actual plan, where R U going to use this combination process, what basemetal thk. Is any Pipe involved in Ur query ?
Provide all the details, if possible .
Cheers,
Saravanan,
Korea
On Mon, Oct 21, 2013 at 1:03 AM, hany alfy <hanyon_alfy@yahoo.com> wrote:
yes it can be most of time use Smaw for root then can apply Saw or Fcaw Regards, HA |
From: Mervin <mervin_kid@yahoo.com>; To: <materials-welding@googlegroups.com>; Subject: [MW:19000] Combination of two welding process with diffrent PQR Sent: Sun, Oct 20, 2013 2:42:12 AM
Hi to all, Can you give me a suggestion if the two welding process can be combined or can be used in production joint without PQR of this two welding process. * we have a qualified wps for smaw And we have a wps qualified for saw may question is can we use this two wps. Thanks Mervin Sent from my iPhone -- 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/ http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm 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. --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. |
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