×
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

Operating or design conditions for nozzle loads

Operating or design conditions for nozzle loads

Operating or design conditions for nozzle loads

(OP)
To the best of my knowledge, API 610 does not specify whether the loads obtained from operating or design conditions should be used when comparing nozzle loads to the allowables.

Is it up to the discretion of the client or are there fixed rules?

RE: Operating or design conditions for nozzle loads

If you look closely at ASME B31.3, you will find that "design conditions" are only used in that code with respect to pressure design.  It is the combination of pressure and temperature (that can occur together) that results in the greatest wall thickness or highest pressure rating.  It is not necessarily the highest temperature, or the condition that gives the greatest load on the pumps.  For flexibility analysis, from which loads on pumps are deterined, the code specifies "metal temperature for the thermal cycle under analysis."  See para. 319.3.1. Having said that, a designer or owner could choose to have the design conditions considered as one of the thermal cycles to be evaluated, which is commonly done, but this is not a code requirement.

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