Hi Mr.Lakhsman, ASME Sec.IX-QW200.4 allows to combine 2 or more WPS's.Please find below the Extraction. QW-200.4 Combination of Welding Procedures (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. Where more than one WPS specifying different processes, filler metals, or other essential or supplementary essential variables is used in a joint, QW-451 shall be used to determine the range of base metal thickness and maximum weld metal thickness qualified for each process, filler metal, or set of variables, and those limits shall be observed. Alternatively, qualification of WPSs for root deposits only may be made in accordance with QW-200.4(b). When following a WPS that has more than one welding process, filler metal, or set of variables, each process, filler metal, or set of variables may be used individually or in different combinations, provided (1) the essential, nonessential, and required supplementary essential variables associated with the process, filler metal, or set of variables are applied (2) the base metal and deposited weld metal thickness limits of QW-451 for each process, filler metal, or set of variables are applied (b) For GTAW, SMAW, GMAW, PAW, and SAW, or combinations of these processes, a PQR for a process recording a test coupon that was at least 1⁄2 in. (13 mm) thick may be combined with one or more other PQRs recording another welding process and any greater base metal thickness. In this case, the process recorded on the first PQR may be used to deposit the root layers using the process(es) recorded on that PQR up to 2 t (for shortcircuiting type of GMAW, see QW-404.32) in thickness on base metal of the maximum thickness qualified by the other PQR(s) used to support the WPS. The requirements of Note (1) of tables QW-451.1 and QW-451.2 shall apply.
Thanks & Regards,
(Karthik)
Karthikeyan.S QA/QC Manager Getabec Energy Co.,Ltd. 379,Moo6,Soi8,Nikhomphatana, Rayong-21180, Thailand. Phone: 0066 38 897035-8 (Off) Fax: 0066 38 897034 Hand Phone: 0066 892512282
--- On Wed, 7/27/11, lakshman kumar <lakshmankumar4@gmail.com> wrote:
From: lakshman kumar <lakshmankumar4@gmail.com>
Subject: RE: [MW:11948] QW 200.4(b)
To: materials-welding@googlegroups.com
Date: Wednesday, July 27, 2011, 4:09 PM
I hope that Combine WPS may not be prepared with the individual - different process - PQR's (Say GTAM+SMAW+SAW) This is my view and experience. If anyone is having the code provision against the above statement, request you please provide the clause no and code reference. Thanks and Regards................? | 
| Lakshman Kumar.B|Manager- QA/QC |Lanco Infratech Limited Plot No 1255 | Sanjeevani chowk | Mahanadi vihar | Cuttack 753004 Phone : + 91 671 2445033 | Mobile : +91 9937286851 |www.lancogroup.com Go Green|The future will thank you | Please note that my "Lanco group" mail is not working properly at some times, request you keep a copy to personal mail ID lakshmankumar4@gmail.com From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Karthik
Sent: Wednesday, July 27, 2011 2:07 PM
To: materials-welding@googlegroups.com
Subject: Re: [MW:11947] QW 200.4(b) | Hi, You are right.While combine 2 or more wps's,the root pqr specimen shall be minimum of 13mm thickness. 379,Moo6,Soi8,Nikhomphatana, Phone: 0066 38 897035-8 (Off) Hand Phone: 0066 892512282
--- On Tue, 7/26/11, yash yagnik <yash2223@gmail.com> wrote:
From: yash yagnik <yash2223@gmail.com>
Subject: [MW:11943] QW 200.4(b)
To: materials-welding@googlegroups.com
Date: Tuesday, July 26, 2011, 11:23 PM
Can anybody give detail interpretation of this clause?? For example I am describing below mentioned problem. I want to weld 100mm thick plate for use of Heat Exchanger with Impact requirement and with the help of multiple processes - Root GTAW followed by SMAW and SAW. I already have three PQR of individual process with GTAW - Thck 10mm , SMAW - 25mm thk and SAW - 50mm thk. All are satisfying imapct requirement. NOW Can I use prepare a WPS with supporting of this three PQR? My Interpretation of this clause is as under: I can prepare this WPS with the help of this three PQR but my WPS will be qualified for thickness of 10mm to 20mm hence I cannot use this WPS for intended job. If I can have PQR of GTAW with plate thickness of 13mm I can use this PQR and range will be 13mm to 100mm as root run GTAW PQR with thickness of 13mm or more will qualify for any greater thickness base material root run welding. If my interpretation is wrong or any new ideas/views or Observations are there from you people i would like to understand it. --
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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. --
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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