What i interpret from the query is that the thickness of test coupon welded for PQR i.e while qualifying the WPS was 15mm.
Hence as per ASME SecIX, QW-451:which states the Procedure qualification thickness limits, the range of thickness "T" of base metal qualified will be 5mm to 30mm (2T).
Actually the question is not very clear and imp. details like impact requirements are missing ...
All are requested to pose clear,detailed to the point queries so that they can get correct answers / solutions.
Regards
Prem Nautiyal
Cell:9820313278
On Sun, 11 Oct 2009 14:06:21 +0530 wrote
>thickness limits are defined in QW 403.6 and 403.8, diameter is not a restriction for procedure but thickness limits are.to weld 20mm thickness your PQR test coupon thickness shall be at least 10mm
On Sun, Oct 11, 2009 at 10:53 AM, Shashank Vagal
Hi Group Members,Please see the following and advise.Shashank Vagal
Query:
dear every one,
i have this problem i need to know the thickness range or pipes diameter
range for the wps in which standard i think its in asme sec 9 but where ???
for exmple if i have wps for thickness 15 is it cover the 20 mm
waiting answer please
regards
My Reply:
A WPS is a guideline to ensure joint integrity as proven by
PQR + applicable mech tests + NDT. It is intended for all job sizes once the
welding technique used proves itself in these tests. The sizes etc come in to
picture by qualifying welder on test coupons of a given size as per your job
requirements. ASME IX stipulates weld metal deposit and not job size. Please
ref to QW 450 - 461.
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PREM S NAUTIYAL
CELL : 9820313278
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