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What is your design code, Sec VIII div 1 is mandatory RT after PWHT only for Ferritic SS grades. But if I am the inspector may insist for NDT after PWHT since thick is high in your case, alternately you may propose UT after PWHT instead of RT.
From: Vijay Singh [mailto:vijays@tpc.ae]
Sent: Wednesday, February 27, 2008 10:34 AM
To:
Subject: RE: 611] Re: ELEMENT WHICH GIVE LOW TEMP TOUGHNESS TO SA333 Gr.6
I need your inputs
SS 321 Pipe , 42 mm thickness , welded . radiography was performed after welding and report cleared by TPI was OK with not a single repair advice on 224 mtrs…... ASTM allows radiography before PWHT , but client is insisting on radiography after PWHT . Is there any change in results if radiography is done after PWHT as compared to the radiography results before PWHT.
What is the logic for asking for radiography after PWHT if ASTM allow it.
rgds
Vijay
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