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[MW:4388] RE: 4338] Robot - WOPQ?

By Materials & Welding
The section you cite does not apply to overlay welding.  It only applies to studs,  insulation pins, fins, etc.
 
Paragraph UW-29 (b) defines what the exemption applies to:  " The welder and welding operators used in welding non-pressure attachments, which have essentially no load carrying function (such as extended heat transfer surfaces, insulation support pins, etc.) to pressure parts shall comply with . . ."
 
Weld overlay does not meet the criteria above so your welding operators will have to be qualified appropriately per Sc IX.
 
John Henning

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of PREM SHANKARDUTT NAUTIYAL
Sent: Thursday, February 25, 2010 10:06 AM
To: materials-welding@googlegroups.com
Subject: [MW:4338] Robot - WOPQ?

Dear All

We have a typical situation.
We want to do overlay by FCAW and want to deploy robot for this i.e by automatic welding.
The construction code is ASME Sec VIII Div.1

Now as per ASME Sec VIII Div1, UW29(b)(2)-- "when welding is done by any automatic welding process, performance qualification testing is not required".
So do we need not do any WOPQ ?? Is performance qualification required or not ??
Pls.. advise..

Regards

Prem Nautiyal

PREM S NAUTIYAL
CELL : 9820313278

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