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Minimum Requirements for attachment welds at openings

Minimum Requirements for attachment welds at openings

Minimum Requirements for attachment welds at openings

(OP)
Hello!

To calculate the minimum size of attachment welds for nozzles and flange to nozzle neck welds (UW-16 and UW-21, respectively), is "tn" defined as the nominal thickness of nozzle wall minus corrosion allowance minus 12.5%tn of mill tolerance (when pipe is used)?

Thank you!

RE: Minimum Requirements for attachment welds at openings

Checking my notes going back to 1980's, Tn does not include corossion allowance.

RE: Minimum Requirements for attachment welds at openings

As defined in UW-16, tn is the nominal thickness of nozzle wall: this indicates the thickness that's specified in the drawings.

prex

http://www.xcalcs.com
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RE: Minimum Requirements for attachment welds at openings

What fun! If you use pipe,UW-16 sends you to UG-45 and footnotes.Then to UG-25 and UG-8. Remember all must be addressed.

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