Hi,
When combination WPS,Base metal range will not be limited for each process.But weld metal thickness is limited
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 Sat, 3/19/11, Sundaram Elumalai <Elumalai.Sundaram@starfab.com.sa> wrote:
From: Sundaram Elumalai <Elumalai.Sundaram@starfab.com.sa>
Subject: [MW:10434] process thk -AWS
To: materials-welding@googlegroups.com
Date: Saturday, March 19, 2011, 5:09 PM
Dear Mr.Karthikeyan, Please give me your opinion for the following. Recently we have qualified one PQR with SMAW – Root and HOT pass. FCAW – Fill and Cap. Base Metal thickness: 25.4mm / 10" Pipe Dia Code : AWS D1.1,2010. SAES-W-013. Since SAES-W-013 Clause 5.4.2 is confirming that FCAW process shall not be used for Root and we have followed the same condition during the PQR qualification. 
Our interpretations are as follows: 1. As per the AWS D1.1, Table 4.2 - If we use the plate thickness of 25mm over, qualification range will be 10mm to unlimited. 2. I have stated in the WPS that SMAW process is only for root and hot pass and FCAW for FILL &CAP. 3. Based on the SAES-W-013 and AWS Table 4.2, the QUALFICATION range for the WPS is 10mm to unlimited or 0.5 to 1.5 of base metal thickness. 4. For the combination of Welding Process ( SMAW+FCAW), The thickness limitations will not be applicable for each process since root and Hot Pass of SMAW is not for FILL & CAP 5. SMAW WELD METAL is backing for FCAW. 6. We always use the WPS as SMAW –ROOT /HOT Pass & FCAW – FILL&CAP. 
Clarification required: 1. For the combination of welding process, the thickness limitation will not be for each process. 2. Base metal Qualification range will be considered for both the process. ( as below). 
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