Dear KCR
Kindly refer to ASME Sec. VIII Div 1 2010, fig: UW 13.1 (l) and note under the same which reads "When thick is equal to.........." also look at 2 of page no. 122. Strictly speaking SF is not required when the thickness of shell and dished end are equal and the joints are made by butt welds. When there is a difference in thickness the 1:3 transition that needs to be made shall be within the SF.
However, as a good engineering practice the butt weld shall be avoided in the knuckle area.
Gopal
From: kcrtechnical <kcrtechnical@gmail.com>
To: materials-welding@googlegroups.com
Sent: Thursday, 5 January 2012 2:08 PM
Subject: [MW:13413] Straight Face Requirement in Dished End..Reg.,
Dear Friends,
Is there any specific requirement specified any PV Codes regarding requirement of Straight Face in Dished Ends.
Best regards
K C R
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