×
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

Nozzle Schedule - PV Elite

Nozzle Schedule - PV Elite

Nozzle Schedule - PV Elite

(OP)
Hello all,
I am designing a closed drain drum using PV Elite.
Size: 75" ID and 18.67' S/S.
Design P is 125psig @120 deg F.
Mat'l is CS + 3mm.

My piping designer has done wall thickness calculation and selected SCH 40 for the pipes.
Using this schedule for my 4" nozzles fail in PV Elite.

Should I proceed to sch 80?
This is the only way I knew that my nozzles could pass, by increasing the sch.
I have tried reinforcement but it didn't work.
please advise.

Thanks for your anticipated response

"Let he that thinks he is standing beware that he does not fall".

RE: Nozzle Schedule - PV Elite

shady2554. are you designing to any particular Code of construction? If so, are you familiar with the rules relevant to you class of work? Are you familiar enough with your software to understand in what way it is telling you the nozzle is failing?

Regards,

Mike

The problem with sloppy work is that the supply FAR EXCEEDS the demand

RE: Nozzle Schedule - PV Elite

(OP)
Thank you SnTMan for your prompt response. As for your questions:
Yes am designing to ASME VIII Div 1.
Yes, I'm not an expert in the field, so to some extent I am familiar with the relevant rules, otherwise I wouldn't be here to ask questions.
Yes, I am familiar enough with my software, I have used it previously in a couple of projects.
So when I have a UG-45 Failed error [Minimum Nozzle neck thickness], I do understand that.
So please sir, I would appreciate your expertise in putting this ache to rest.

What can i do?

"Let he that thinks he is standing beware that he does not fall".

RE: Nozzle Schedule - PV Elite

shady2554, UG-45 rules are relevant only to minimum required nozzle neck thickness. This thickness is determined by several conditions as per the rules. These rules are not concerned with opening reinforcement, limits thereof, weld details and sizes, end preparation or any other aspect of the nozzle.

So, if a nozzle is failing on UG-45 thickness, the only way to correct it is to increase the nozzle neck thickness.

Regards,

Mike

The problem with sloppy work is that the supply FAR EXCEEDS the demand

On Edit
: Your piping designer is not bound by UG-45. The nozzle wall and attached piping wall are commonly mis-matched

RE: Nozzle Schedule - PV Elite

(OP)
Thanks Mike.
Really appreciate.

"Let he that thinks he is standing beware that he does not fall".

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

eBook - Mastering Tolerances for Machined Parts
When making CNC machined parts, mastering tolerances can be challenging. Are general tolerances good enough? When does it make sense to call out for tighter tolerances? Do you need a better understanding of fits, datums, or GD&T? Learn about these topics and more in Xometry's new e-book. Download Now
eBook – How to Choose the Correct Corrosion Testing Method
When designing a metal component, engineers have to consider how susceptible certain alloys are to corrosion in the final product’s operating environment. In a recent study by NACE (National Association of Corrosion Engineers), it was estimated that the direct and indirect costs of corrosion in the United States is approximately 6.2% of the GDP. In 2016, that cost exceeded $1 trillion dollars for the first time. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close