Wednesday, April 10, 2013

[MW:17328] PWHT for Gr. P91/P22/P11 during welder qualification

Dear experts,

 

We know that PWHT can be avoided for  welder qualification (Ref:QW-301.2) even if WPS has PWHT. My doubt is whether it is required to do PWHT while performing welder qualification for Gr. P91/P 22/ P11. Kindly clarify.

 

S.Binoy

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