Hera are some recommendations to qualify PQR for In service welding of split Tee.
· The requirement for production welding in section 5/7 should be applied to in-service welding except for the additional requirement given in the appendix-B.
· For circumferential fillet weld Dia, thickness and base metal are not the essential variables as per Appendix B, Para B.2.2.1.1 and 2.2.1.3.(additional requirements) but not for longitudinal groove weld.
· For in service welding PQR needs to be qualified as per fig B-2.
· Mechanical test should be as per Table B-1.
· C.E and pipe operating conditions shall be mentioned in the procedure.
Regards
Faisal Shahzad Meer
TEL :+966 3 6795805-7 Ext. 124|www.gccksa.com
E-mail fmeer@gccksa.com
+966 - 553919249
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of anas k
Sent: Saturday, November 29, 2014 5:25 PM
To: materials-welding@googlegroups.com
Subject: [MW:22419] WPS - In service welding
Dear Experts,
I am in a situation to establish WPS for in service piping as per 1104 Annex B. The WPS is for a split tee tie in joint (Encirclement Tee)
Split tee ASTM A 516 Grade B
Header pipe 24" sch 60 (API 5L Grade B)
How to select the thickness range ?
How to select dia range ?
What are the essential variables ?
Please guide me to make a preliminary WPS.
Thanks & Regards
Anas Karanath
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