Dear Mr. Gohil,
Whenever you will qualify any welder, you have to consider all the essential variables QW353, QW356.
The F-No will chage for SMAW , and for GTAW may be the F-No wil be same.
If all the essential variables of QW 353 (SMAW) and QW 356 (GTAW) dosen't change , then you can qualify the welders accordingly.
Kind Regards,
Sukamal Naskar
Senior Welding Engineer
Bohler Welding
On Sat, Mar 19, 2011 at 11:36 AM, Narendra Gohil <ngohil@qafco.com.qa> wrote:
Dear Experts,
As per ASME sec.IX- QW423.1 mentioning Base metals for welder qualification and also mentioning qualified production base metals against that.
Like; P-or S-No.1through P -or S- No.11,P- or S-No. 34,and P- or S-No.41 through P- S-No.49 and against that same grouping and range of P- or S-No. mentioned for qualified production base metals.
That means if a welder qualified with as for example in CS(P no-1) welding(GTAW or SMAW any one ) with preheating and PWHT welding parameters,he can qualified with Low alloy steel like (P.No.4 or other in low alloy steel).
I have been questioned by our Inspection experts and I don't have answer other than mentioned in QW401.2"essential variable"(Performance).
Thanks & Rgds.
Narendra Gohil
Welding Engineer
QAFCO
Ph.+974-44228289(O)
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Sukamal
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