As per ASME sec viii div 1,No 42 , VIII-1-98-09,NDT can be performed
before PWHT as well.
in my opinion, Doing a DP test is not a big deal,if client asking for
it,you should fulfill his requirements.
Regards
Manpreet Singh
Welding Engineer
Spiecapag
On Sun, 30 May 2010 12:34:57 +0530 wrote
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Dear All,
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I have conducted Overlay PQR qulification (316L OVERLAY ON SA516 Gr.70N) as per ASME Sec IX.
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As per ASME SEC IX QW-453, note 4, 5, 9, we have conducted
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1. DP test after every layer(total 3layers) in as-welded condition.
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2. 4-Side bend tests in PWHT condition.
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3. Chemical analysis from overlay specimen in as-welded condition.
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Job requirement:
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316L weld overlay on SA516 Gr.70, vessel will under PWHT at 620 Deg.C.
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ASME Div.1 Cladded Vessel.
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Client Comments on PQR.
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client is demanding us to provide DP report After PWHT of the overlay.
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Client says PWHT is essential variable, DP test & bend tests should be conducted after PWHT.
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Query.
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Is it Code (Sec.IX or Div.1 ) requirement to conduct DP test after PWHT ?.
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If it is code requirement, pl. provide the reference from code.
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if any code interpretations available, pl. provide the same.
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regards
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P.Rao.
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