Table PW-39-3 circumferential butt welds under Section I

[Tony1t]

Do the postweld heat treatment exemptions for circumferential butt welds noted in Table PW-39-3 apply to the welds illustrated by Figure PW-16.1, illustration (a)?
Thank you in advance

 

[GD2]

Tricky question. Do we even consider a nozzle welding (full penetration butt weld) as circumference butt weld? Open to debate.

GDD
Canada

 

[r6155]

1) The circunferential (joint) weld is clear and does not depend on whether it is full or partial penetration, butt welding or any welding method. Fig PW-16.1(a) is not a butt weld
2) Table PW-39.3 applies to Figure PW-16.1(a)

Regards

 

[IdanPV]

Refer to the below Interpretation, its apply to Figure PW-16.1(z) but I assume that you can draw conclusions from it regarding your case as well

Standard Designation: BPV Section I

Edition/Addenda: 2010

Para./Fig./Table No: PW-39, Table PW-39-3, Figure PW-16.1(z)

Subject Description: Section I Inquiry, PW-39, Table PW-39-3, Figure PW-16.1(z), Postweld Heat Treatment Requirements

Date Issued: 03/19/2013

Record Number: 13-264

Interpretation Number : I-13-09

Question(s) and Reply(ies):
Question 1: Are the tube to header welds illustrated by Figure PW-16.1(z) considered circumferential butt welds??
Reply 1: No.

Question 2: Do the postweld heat treatment exemptions for circumferential butt welds noted in Table PW-39-3 apply to the welds illustrated by Figure PW-16.1(z)??
Reply 2: No.

 

[r6155]

Table PW-39-3 General Notes (a)(3)applies. See 2023 edition.
Fig PW-16.1(a) is not a circunferential joint

Regards

 

[DekDee]

Tricky question. Do we even consider a nozzle welding (full penetration butt weld) as circumference butt weld? Open to debate.

Currently working on an ASME VIII Div I project and this issue came up.
ASME VIII Div I clearly differentiates between butt joints (in the same plane) and corner joints (90 degrees to each other).
ASME I notes exactly the same terminology for butt joints (in the same plane) but no mention of corner joints ?