WPS's for pipelines in service??

Date 06-11-2012 23:02

Hi all.
Someone could clarify this issue;

Application is correct weld with SMAW process with ASME WPS performed under oil pipelines in service, supported with the recommendations API 2201? Since we saw API 1104 APPENDIX B WELDING IN SERVICE.

By 3.2 Inspector (***)

Date 06-13-2012 01:28

Yes.
Which issue?

By MKNIK

Date 06-13-2012 05:21

hello inspector, thank you for atention me

sorry for my english bad.

Concerning the previous post;

Service pipes in wall thickness are higher than ¼ ", API 1104 Appendix B focuses on wall thickness less than ¼". is correct use of a WPS performed under ASME, with low hydrogen electrodes?

By 803056

Date 06-18-2012 10:39

If the pipe is in-service and it is used for the transportation of petroleum products, API 1104 Appendix B is the guide you should follow.

The WPS and the welder must be qualified using the apparatuses described and depicted in Appendix B to simulate the effects of rapid cooling on the weld and HAZ and to demonstrate the welder will not burn a hole through the line pipe wall.

Best regards - Al

By MKNIK

Date 06-23-2012 14:29

HELLO
WE ALSO APPLY API 1104 APPENDIX B IN PIPES IN SERVICE WITH A WALL THICKNESS GREATER THAN 1/4 "??Thank you for your help and patience

By jarsanb (***)

Date 06-27-2012 13:49

If that is a question you are requesting an answer to...I would say yes. API 1104 appendix B should be applied to all thickness that are in-service. The 1/4" that you refer to is applied to burn through potential. Hydrogen cracking, which is the other main concern, also needs to be addressed.