Hi Everybody
"For P-Nos. 3, 4, and 5 materials, examination shall be performed after completion of any heat treatment" this phrase is from ANSI B31.3 para 341.3(a) Examination Requirements.
Regards,
H.Nikdin
To: materials-welding@googlegroups.com
Date: Tue, 29 Sep 2015 07:29:37 +0200
From: george.dilintas@gr.bureauveritas.com
Subject: Re: [MW:23580] Regarding RT before or after PWHT
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"For P-Nos. 3, 4, and 5 materials, examination shall be performed after completion of any heat treatment" this phrase is from ANSI B31.3 para 341.3(a) Examination Requirements.
Regards,
H.Nikdin
To: materials-welding@googlegroups.com
Date: Tue, 29 Sep 2015 07:29:37 +0200
From: george.dilintas@gr.bureauveritas.com
Subject: Re: [MW:23580] Regarding RT before or after PWHT
As a rule NDT has to be performed after all fabrication steps including PWHT. Some codes allow exceptions
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| From: Ajay Sent: Τρίτη, 29 Σεπτεμβρίου 2015 - 07:37 To: materials-welding@googlegroups.com Reply To: materials-welding@googlegroups.com Subject: [MW:23575] Regarding RT before or after PWHT |
Dear Sir,
As we all aware that PWHT and RT both are different in nature, in general we perform RT after PWHT(Where PWHT is required to be perform after welding).
However it is not written anywhere that RT is to be performed after PWHT only.
My question now is , can we perform RT first and then go for PWHT? will it be acceptable ????.
I have seen many client inspectors asked contractors to perform PWHT first then RT whereas their specifications does not say anything in this regard.
All experts are requested to throw light on the subject. Documented proof/literature , if any, to support this will be higly appreciable.
regards,
Ajay
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