Hi everybody,
I know it's not an AWS subject, but perhaps someone is able to solve my doubt. I have a welded branch connection- please take a look at the sketch attached. Pipe header ASTM a 335 Gr p 11- P N° 4- thickness 25.4 mm/ Branch connection ASTM a 335 Gr p 11- P N° 4- thickness 16.0 mm (PWHT). It was welded with a weld detail according to # 331.1.3, Fig-328.5.4D, sketch (1). Tab-331.1.1 specify that the thickness range regarding to PWHT must be > 13.0 mm. My question is does this welded branch connection need to be submitted to PWHT? Thank you all in advance.
Norberto