Tuesday, July 28, 2009

[MW:2835] Toughness Requirement for Dissimiller Weld

 

 

Dear All,

 

We have a  job ( hydro generator) material SA 387 Gr.11 CL 2 + SS347 ( clad) ,required impact testing at (minus)-18 Deg.C with energy value 33 J average (irrespective of MDMT ),having some nozzles (LWNR) material is SA 182 F 347.   

For  Welding Procedure Qualification of Dissimilar metals Nozzle to Shell joint ( P4 To P8) using electrodes by E309L , weld Impact test is required or not?

As per ASME SEC VIII Div 1 – UHA-51 (e) it is exempted ,

Please advise.

 

Thanks in advance.

 

 

 

 



 


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