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  1. engrshanas512

    Time between Welding and PWHT

    We welded P91 one year back, but till we did not perform PWHT.
  2. engrshanas512

    Time between Welding and PWHT

    Since one year we did not perform PWHT :(
  3. engrshanas512

    Time between Welding and PWHT

    Dear Colleagues, I am aware all of above techniques. What I am asking, there is some time limit between P91 welding and PWHT, say 3, 7 or Max 29 days, if we do not organise PWHT within 29 days, it will lead us SCC crack. I am wondering to where I can get aforementioned info i.e time between...
  4. engrshanas512

    Time between Welding and PWHT

    Many thanks for your of your comments, as per my study, According to Babcock & Wilcox, the time between completion of welding and PWHT should be limited to 14 days maximum to minimize the risk of SCC: Gold M, Hainsworth J, Tanzosh J M, ‘Service experience with design and manufacturing...
  5. engrshanas512

    P91 filler wire and Cr content issue

    Thanks my friend and it is solved now. Issue was seen on the plate
  6. engrshanas512

    Time between Welding and PWHT

    Hi All, Can any body tell me to where I can find time between welding and PWHT for P91 materials especially for Power Piping. Thanks Regards Muhammad
  7. engrshanas512

    P91 filler wire and Cr content issue

    I just want to some important/critical points on the subject: The whole dispute we had on welding was the root pass for P91 for the first layer itself which should be 8 and above. However code allows after welding 1st layer PMI reading should be 7.2 and above. ASME Section II part A calls...

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