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RE: [MW:22428] WPS - In service welding

By Materials & Welding

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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