×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Allowable Loads and Moments in Head Nozzles

Allowable Loads and Moments in Head Nozzles

Allowable Loads and Moments in Head Nozzles

(OP)
We need the maximum loads in moments for a 36"-150# nozzle located at the top of a column. The WRC-107/297 is only for shell nozzles. The loads charts available for is up to 30". Please tell me how we do to get these values.

RE: Allowable Loads and Moments in Head Nozzles

FE/NOZZLE OR NOZZLE PRO. WWW.PAULIN.COM

RE: Allowable Loads and Moments in Head Nozzles

mmechanical,

The 36" nozzle is quite a large size for a nozzle in top of the column, however, you probably don't get the piping loads for a 36" pipe size. Usually, the loads imposed on that nozzle are much lower and you should work with  estimated operating loads instead of theoretical, design loads, or you should discuss with your piping designer to limit the loads, by clever piping lay-out. Usually, the FEA is not warranted for such simple nozzle load, but you are the final judge for the complexity of external loads and the feasibility of an expensive FEA.

Cheers,

gr2vessels

RE: Allowable Loads and Moments in Head Nozzles

Any way to extrapolate the charts for a first approximation?

RE: Allowable Loads and Moments in Head Nozzles

Extrapolate the charts?  My simple answer is NO.  Have you looked at the WRC 107 charts?  Some of them are not monotonic increasing/decreasing, so how would you go about extrapolating?  Too dangerous for my liking....

RE: Allowable Loads and Moments in Head Nozzles

(OP)
Thanks for your answer. We have a chart, which I don't now the autor, this chart has a formula, base on that formula we will calculate the allowable load in the nozzle.

RE: Allowable Loads and Moments in Head Nozzles

Double check the application scope of your formula. If it's just an empirical one, more cautions need to take. Based on years experiences on local stress calcs around a large opening, I do not trust any analytical formula at all. If there is no thermal loads, FEPipe or Nozpro is a good choice.

BTW, what is the ratio of the d/D (nozzle dia / head dia)?

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources