Dear Friends. I'm new to this Forum.
Question 1- Can a 6GR Welder qualified to AWS D1.1 also qualified to ASME SECT IX as well?
Yes, ASME does not mention anything on 6GR Position but included QW-303.3/QW-461.9-"special positions".
Also,ASME Sect IX-QW-461.9-6G welder qualified for all positions excluding "Special Positions"
Isnt it 6GR position fall into Special Position according to ASME Sect IX? If not why?

My Welder Certifcate for 6GR welder include ASME Qualification Range-is it right? If not why?
In my opinion. 6GR position welder is more competent than 6G welder as he has to weld with Restriction Ring. For both 6G & 6GR- Only RT required.

Question 2 -AWS D1.1-Table 4.10 -6GR Qualification Range for Production Pipe Welding with Note d.-Can someone explain me in detail. For both 6G and 6GR-Backgouging not possible except for larger diamegter pipe/tubular wherer internal access possible.

Thanks

Question 1- Can a 6GR Welder qualified to AWS D1.1 also qualified to ASME SECT IX as well?

No. AWS permits the Engineer of Record to accept "other" qualifications, which could include ASME IX however ASME IX does not accept the qualifications of other codes.

Also,ASME Sect IX-QW-461.9-6G welder qualified for all positions excluding "Special Positions"
Isnt it 6GR position fall into Special Position according to ASME Sect IX? If not why?

6GR is an AWS and EEMUA-158 position. I suppose ASME "might" recognise 6GR as a special position however in order to qualify the welder the restricting ring would have to be in place, therefore a 6G would NOT qualify a 6GR.

My Welder Certifcate for 6GR welder include ASME Qualification Range-is it right? If not why?
In my opinion. 6GR position welder is more competent than 6G welder as he has to weld with Restriction Ring. For both 6G & 6GR- Only RT required.

6GR is a more difficult joint than 6G. I have worked with Companies that specify 6GR for ASME IX qualifications so if this is the case, it's right. RT is "permitted" for welder qualification under ASME IX rules, in certain cases however mechanical testing is the preferred method.

Question 2 -AWS D1.1-Table 4.10 -6GR Qualification Range for Production Pipe Welding with Note d.-Can someone explain me in detail. For both 6G and 6GR-Backgouging not possible except for larger diamegter pipe/tubular wherer internal access possible.

I have the 2004 Edition of AWS D1.1 and cannot find Note d to Table 4.10; can you be more specific?

Dear Sir

1) I was referring to AWS D1.1-2008-Table 4.10-Welding and Welding Operator Qualification-Production Welding Position Qualified. "Note d- Not qualified for joint welded from one side without backing, or joint welded from two sides without backgouging". Pls explain


2) 6G welder not qualified to 6GR BUT how about 6GR qualifiaction range?

Thanks

See Figure 4.27 for qualification of tube or piping without backing however even if you do this test, it still would not be accepted by ASME IX. While it is possible to test to both codes simultaneously, the person testing has to be very aware of test requirements for BOTH codes.

6GR qualification is accepted for all positions.

Dear Sir

Is there any where in ASME mentioned that other code performance qualification not accpetable?Is there technical background/reason for ASME not accepting other code qualifications?

Pls explain "Note d- Not qualified for joint welded from one side without backing, or joint welded from two sides without backgouging"

Isn't root weld can be seen as backing weld? Normally, no backgouging not applicable for pipe welding as
SMAW-using LB52U full penetration & so does for other process such as GTAW.

Btw is it possible to post this query via internet access - Pls give website / e-mail add.

Thanks in advance

Nalla, as far as I know, it is NOT stated in ASME IX that qualification in accordance with other codes cannot be accepted, but it shouldn't need to be. The user of codes and standards is expected to have some level of technical competency.

ASME IX is NOT a stand-alone code, it is invoked by other codes and standards which may further add, delete or modify the requirements of ASME IX.
Those other codes and standards do not say qualify in accordance with ASME IX or AWS, they specifically state ASME IX. That will be your requirement.

There are differences in application between ASME and AWS. While the weld doesn't know which code it will be tested to, the welding engineer, inspector or supervisor should know which code is appropriate and applicable.

Dear Friends
Thanks for all the advise. 6GR(AWS) & 6G(ASME) - call for Full Penetration by the both codes respectively. When a welder qualified to 6G , he shall be also QUALIFIED TO 6GR and vice versa as long essentials/supplementary essentials remain unchanged. Can someone help in understanding true reason of the variation/restriction set by the codes.Offcourse None of the codes reject but keep silent about it.
I want to issue one welder certificate both code qualification. The reason
1) Less Paperwork
2) Less welders required to weld all the joint types in various positions

Dear Nalla, AWS Code is related to pipe without pressure only structural member ( pipe, plate, etc).
ASME Code is related to pipe with pressure (industrial pipe).
Please, if someone disagree, just let me know.
A welder is generally qualified by one Code at time.
best wishes,
Norberto

Dear Friends
AWS D1.1 included 6GR qualification with limitation and 6G position for pipe welding
ASME Sect IX - no mention of 6GR qualification/ position
6G welder can weld pipe butt welding with accessibility to backgouging to ensure full penetration.. 6G welder not required.
Is 6G welder qualified to weld T-Y-K -weld connections(6GR position)?

Thanks for all the inputs

Nalla,
As Norberto has stated one is a structural code and one is a vessel / piping pressure code.
You cannot combine the relevant information for two codes on the one form.
They have totally different diameter and thickness qualification ranges.
Regards,
BB

Hi Friends
I take note of all your advise. But neither codes dont have any provisions prohibiting my understanding
Cant I consider "Special Position" as mentioned in ASME Sect IX-QW-303.3 inclusive of 6GR - T-Y-K Connections.?
Pls dont misunderstood my intentions. I only want to have better understanding by clarifying these grey area atleast in my point of view.

By the way can someone guide me on how to go about include attachment?I want attach my typ 6GR Welder cert.