PWHT for Branch connection weld

[quatle]

Hello everybody

as subject, I have many joints Olet (weldolet/Nipoflange) are seft reinforement more than 25mm welded to pipe run 10''SCH80(15.09mm) & 12"SCH80(17.48). As per ASME B31.3 2014 defined that Tm+Tc>25mm in FIG.328.5.4F is need to PWHT or preheat 95deg without PWHT. but currently we are used WPS qualified by PWHT.

my question: Do we need to perform PWHT in case?

 

[DekDee]

quatle,
If your welding procedure is as per ASME IX you must PWHT or qualify a new PQR/WPS without PWHT,
Regards,
DD