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IMPACT TESTING FOR WPS

IMPACT TESTING FOR WPS

(OP)
Hi :

I have a question on the welding procedure . ASME IX is used for the welding procedure qualification but Supervised project under b31.3. Impact testing is required.

PQR: GTAW + SMAW;
Test coupon thickness: 23.83mm;
Deposited welds thickness: GTAW: 5.0mm; SMAW: 18.83

now: we need welding ONLY with GTAW.

I can use this PQR to support a WPS with impact testing, just for gtaw.


Thanks for your help.

JATE

RE: IMPACT TESTING FOR WPS

Yes and No. For Sec. IX, You can use the PQR for GTAW only.....however, the min. base metal qualified is 5/8" with impacts. Your max weld metal qualified for GTAW is 10mm.

RE: IMPACT TESTING FOR WPS

In addition, the min. base metal qualified is 5/8" for fillet welds as well.

RE: IMPACT TESTING FOR WPS

And per B31.3 you are qualified to 1/2 T (approximately 12 mm) minimum, so you won't be able to use the gtaw process for full pen groove welds.

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