Hi, For Welder Qualification,SMAW polarity is not an essential variable(QW353).If he qualifies with DCEP he can qualify for both. But for PQR,Change in polarity is a supplementary essential variable.Then you have to follow QW409.4. 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, 8/28/10, prem_nautiyal <prem_nautiyal@rediffmail.com> wrote:
From: prem_nautiyal <prem_nautiyal@rediffmail.com>
Subject: Re: [MW:6777] Polarity qualification?
To: materials-welding@googlegroups.com
Date: Saturday, August 28, 2010, 6:20 PM
Hi If you are referring ASME Sec IX, then as per the table of QW-253 which talks about welding variables procedure specifications, refer QW-409.4 (Electrical characteristics), change in current or polarity is considered as supplementary essential variable for Impact requirements and Non-essential if you don't have any Impact requirements. Regards Prem Nautiyal On Sat, 28 Aug 2010 15:26:12 +0530 wrote >Dear all If one qualifies in DCEP for SMAW, Whats the range qualified for those either DCEP only or both (DCEP& DCEN)? any limits given in specs? where? Thanks -- 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. -- 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.
|
--
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.
No comments:
Post a Comment