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Re: [MW:10760] QW -350 WPQ WELDING VARIABLES; P-Number Clarification,,,

By Materials & Welding

Hi Shaunak,
 
If the welder is qualified by GTAW process only in CS (Pno1), he can also weld SS (Pno 8) with GTAW process. Since both are having same F no. But not vice versa.
 
But If the welder is qualified by SMAW process only in CS (Pno1), he can not be qualified to weld SS (Pno 8) with SMAW process. Since both are having different F nos.
 
Hope this will be more clear!
 
Cheers!
 
Raj
 

 
On Wed, Apr 20, 2011 at 8:09 AM, Shaunak Upadhyay <shanupadhyay@gmail.com> wrote:
Dear Friend,

You are correct that if any welder qualified with P1 material then range of his qualification P1 to P15f, P34, P41 to P49

But at same F-No. also essential variable. By this if any welder qualify in P1 then he cannot weld in P8 (SS 304) because change in F-No. essential variable.

Regards,
Shaunak 


On Tue, Apr 19, 2011 at 8:09 PM, Srinivas Engr <srinivas.gmsrini@gmail.com> wrote:
Dear All,

as per ASME sec 9,

For welder qualification,
as per QW -350, P-Numbers are essential variable.
so change in p number needs to requalified.
& G-Number is not an essential variable. its no issues with G-Number.

1) My question is the above said are right or not..?
If any correction. pl let me know...

Q2) & is the welder qualified to weld P1 to P11, P34, P41 to 49.?

clear me on above issues..

Thanks & Regards
Srinivas

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