Welder qualification Position range doubt? 4G doubt qualifies for?

[Srinivas Engr]

Dear All

If one welder qualifies in 4G...
As of practical he qualifies to all structural position tat 3g, 2G.

as per AWS D1.1, he only qualifies for 4G only - overhead.

pl clear me.. That if welder qualify to weld all position? or is he
only qualify for overhead?

Thanks
Srinivas

[Muhammad Naveed Sabir]

As per AWS D1.1 Table4.1  4G position only Qualifies for Overhead.

But i am sending you one document please find the attached document & review.

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Thanks & Best Regards

Muhammad Naveed Sabir

[Arnab Bakshi]

As per ASME Sec IX : QW 461.9, if a welder is qualified in 4G on plate(groove), he gets qualified as follows:

(i) On Plate & Pipe( >24 in OD, groove weld) : Flat(1G) and Overhead(4G)

(ii) On Pipe( <=24 in OD, groove weld) : Flat(1G) for pipe OD > 23/8 in.

(iii) On Plate & Pipe( fillet weld) : Flat(1G), Horizontal(2G) and Overhead(4G).

 

please feel free to correct me if I am wrong.

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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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Arnab Bakshi
Welding Engineer,
APIL Durgapur

(Alumnus)Dept. of Metallurgical and Materials Engg
NIT Durgapur