Re: [MW:5898] 6GR qualified welder. As per AWS D1.1

Dear Philip,

 

I have responded to your query earlier that, you are 100% is correct with the interpretation.

 

If you qualify the welder in 6GR , the welder is qualified to weld all position with backing. In case of TKY joint of Pipes, the backing is difficult & tedious , so the root pass will act as a backing for the remaining welding .

 

This one has to be proved by your WPS by macro cross section.

 

May be you come up with agreement with your client and Class in the form of written statement and sign off.

 

For example ; API 5L X100 pipes in TKY joint , i'll use the E9016G in root (Which will act as backing) & E11018MH4 for rest  which will be welded without backing by welder qualified in 6GR position.

 

Note : Provide Root gap 4 ~ 5 mm which will ensure CJP of joint.

 

Thanks & Regards,

 

K.Babu

Singapore

 

 

----- Original Message -----

From: Shashank Vagal

To: materials-welding@googlegroups.com

Sent: Thursday, July 08, 2010 3:09 AM

Subject: Re: [MW:5896] 6GR qualified welder. As per AWS D1.1

Philip, Please give more details on the PQR and production weld. Shank 08037756442 --- On Fri, 2/7/10, Philip, Taiye (Lagos) <Taiye.Philip@deltaafrik.com> wrote: From: Philip, Taiye (Lagos) <Taiye.Philip@deltaafrik.com> Subject: [MW:5828] 6GR qualified welder. As per AWS D1.1 To: materials-welding@googlegroups.com Date: Friday, 2 July, 2010, 6:29 PM Hello gents,    I have a query on butt joint welding with 6GR qualified welder. As per AWS D1.1 (2006) Table 4.10 Note d, 6GR qualified welder is qualified for all position. However, they are not qualified to weld production weld butt joint welded from one side without backing or welded from both side without backing. In this case, it is considered as single side welding without backing. Pls could some one in the house clarify more on these if I am right or wrong as per D1.1 interpretations?     Regards Philip Taiye Principal QA/QC Welding Engineer (MIPs Quality Control) DeltaAfrik Engineering Limited 2nd Floor, City Express Bank Building Plot 1637 Adetokunbo Ademola Street Victoria Island, Lagos   Nigeria Phone: +234-1-461-8508, +2341-461-6137 ext. 1257 Cell: +234-(0)-803-803-1396 Fax: +234-1-262-2418 e-mail: taiye.philip@worleyparsons.com     *** WORLEYPARSONS GROUP NOTICE *** "This email is confidential. If you are not the intended recipient, you must not disclose or use the information contained in it. If you have received this email in error, please notify us immediately by return email and delete the email and any attachments. Any personal views or opinions expressed by the writer may not necessarily reflect the views or opinions of any company in the WorleyParsons Group of Companies." -- 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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