×
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

Lifting Lugs

Lifting Lugs

Lifting Lugs

(OP)
Client has ordered a U stamped pressure vessel with -29C MDMT.
Client specification also states that lifting lugs shall be designed for -45C MDMT.

Question:
How do you establish the MDMT of lifting lug
which design code can be used for MDMT

Thanks in advance.

RE: Lifting Lugs

Look at Section VIII, Div 1 and select an appropriate lug material based on UCS-66.

RE: Lifting Lugs

(OP)
Dear Metengr

Thanks for a quick response.

Is ASME code applicable to design of lifting lugs ?

Thanks

RE: Lifting Lugs

Nope -- lifting lugs are a structural appurtnance that is not addressed by Sect VIII.

RE: Lifting Lugs

Impact test of lifting lugs is not required by ASME code. However you can apply impact test requirements in Section VIII to lifting lugs.

RE: Lifting Lugs

aiwa,
It is really simple. Your Client requested you to provide welded lifting lugs of material compatible with the equipment material, impact tested at -45C (does not seem they asked your opinion on what the MDMT should be). Regardless of your opinion over the sanity of this request, they are paying you to give them what they ask for. Also, the welding of the attachment has to comply with the code and Client specification, ie qualified for -45C if the Client wants that. Tha ASME VIII code allows in some cases a reduction in the testing temperature, you have to read the code to see if you qualify for that reduction. Alternatively, give us details of the design conditions and the forum will advise you the appropriate MDMT.
Cheers,
gr2vessels

RE: Lifting Lugs

"That ASME VIII code allows in some cases a reduction in the testing temperature, you have to read the code to see if you qualify for that reduction."

Seems you'd want the waiver to be an "increase" in measuring temperature, since he didn't want to go "down" to -45C

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