IQI Selection in DWSI Technique
pradip kumar sil
Can any one answer the following: one inches butt weld is radiograped
double wall single image technique. The wall thickness is 2.91 mm and
weld reinforcemnt is 1.6mm. In accordance with ASME-V article-2 T-276
what will be the thickness that the penetrameter based on. In another
way the thickness that the penetrameter based on will be
(2.91mm+1.6mm=4.51mm) or (2.91 mm+2.91mm+1.6mm +1.6 mm=9.02mm) ?
The "interpretation" of ASME Section V clearly defines the "Material
thickness" in question.
The height of weld reinforcement at both sides of pipe is applicable
in this case &
which wire is be visible
Looking forward to have your answer with appreciation.
Many Thanks in advance
Regards
Pradip
Doni Afrizal
See T-276.2 (a). Thickness based on nominal single wall thickness plus estimated reinforcement as per reference code.
Regards
Doni Afrizal
pradip kumar sil
As per Sec V which IQI ( 1A /1B ) to be used and which wire to be
visible for 1" & 2.9 mm thickness DWSI technique.
Regards
Pradip
CHINTUKUMAR GANDHI
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Dear Sir,
Please find the Extracts of Clause T276.2 (a) of Article 2 of ASME Sec. V Ed. 2010.
The thickness on which the IQI is based is the nominal single-wall thickness plus the estimated weld reinforcement not to exceed the maximum permitted by the referencing Code Section. Backing rings or strips shall not be considered as part of the thickness in IQI selection. The actual measurement of the weld reinforcement is not required.
Basis on the above, you will have to select either Hole type IQI Designation 12 or 1A wire identity No. 5 or both you can place on the weld for judging better sensitivity.
Thanks & regards,
C. R. GANDHI (Manager- Q.A./ Q.C.) --- On Fri, 6/1/12, pradip kumar sil <prad...@gmail.com> wrote: |
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