×
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

MDMT Flat head

MDMT Flat head

MDMT Flat head

(OP)
Hi fellows, I'm performing a fitness for service (API 579 Part 3) on a Exchanger who works at low temperature. When I check the design data it has a minimum temperature of -10°C.
The flat head has a thickness of 209mm (SA-105). When I check the minimum temperature trough the toughness curves of ASME VIII, I found that the Minimum temperature is 18°C. I'm useing the curve "B" and the goverment thicknes as 209mm/4
There's some restriction to this kind of component?

Regards

RE: MDMT Flat head

Either a stress reduction was used as permitted by UCS-66 or it could have been done wrong. Alternatively, if it was fabricated prior to the introduction of low temperature requirements (1987 Edition of the Code) carbon steels could go down to as low as -20°F prior to requiring impact testing. If it was impact tested I believe you would see that on the Data Report.

RE: MDMT Flat head

Regarding the UCS-66 statement, see if there's a breakdown of MAWP by component for the exchanger and read into the coincident ratio mentioned in one of the figures of UCS-66.

Thanks,
Ehzin

RE: MDMT Flat head

(OP)
Thanks pdiculous963 and Ehzin, I couldn't found the date of the ASME VIII used in that time

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