UG-27(g), UW-9(c) tapered transitions; flange design.
UG-27(g), UW-9(c) tapered transitions; flange design.
(OP)
Hi,
In the UG-27 Thickness of shells under internal pressure (g), any reduction in thickness within a shell course [...] shall be in accordance with UW-9.
Then UW-9(c) tapered transitions, minimum length of taper is required where offset is higher than (1/4 the thickness of smaller section or 3mm).
If I am to design an integral type flange to Appendix 2, shall this UW-9(c) requirement apply to hub length, which has also requirements in Fig. 2-4 sketches (6), (6a), (6b), which are that if slope>1/3, minimum hub length is 1.5 times the thickness of smaller section (go)?
yours truly,
tigny
In the UG-27 Thickness of shells under internal pressure (g), any reduction in thickness within a shell course [...] shall be in accordance with UW-9.
Then UW-9(c) tapered transitions, minimum length of taper is required where offset is higher than (1/4 the thickness of smaller section or 3mm).
If I am to design an integral type flange to Appendix 2, shall this UW-9(c) requirement apply to hub length, which has also requirements in Fig. 2-4 sketches (6), (6a), (6b), which are that if slope>1/3, minimum hub length is 1.5 times the thickness of smaller section (go)?
yours truly,
tigny





RE: UG-27(g), UW-9(c) tapered transitions; flange design.
Yours,
RE: UG-27(g), UW-9(c) tapered transitions; flange design.
If so, then UW-9 (c) applies in my opinion.
The key words in UW-9 are this.........shall be provided at joints between sections that differ in thickness.......
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RE: UG-27(g), UW-9(c) tapered transitions; flange design.
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RE: UG-27(g), UW-9(c) tapered transitions; flange design.
thank you for your input.
I am currently updating an in house excel file so I wanted to check this particular element; it's for an integral design so I thought those chapter of ASME could mix.
tigny