×
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

Api-650 or ASME Sec.VIII?

Api-650 or ASME Sec.VIII?

Api-650 or ASME Sec.VIII?

(OP)
Hello all,

I have a question about which design code is to be used when designing atmospherical tanks or at a very low pressure but they are not vertical or/and cilindrical as defined in API-650. Is it possible to use ASME Sec.VIII? Are there specific codes for those purposes?

Thank you all

RE: Api-650 or ASME Sec.VIII?

Check out API-620.

You can use ASME Sec VIII on some vessels/tanks but you will end up with a very sturdy high price tank. Check out the API Specs and see if your tank falls under either tank spec.  The cost difference between a tank company and ASME fabricator is quite extensive.  A tank fabricator will be able to do the on-site fabrication if it's needed.
We always tried to stay with the tank codes if possible.

RE: Api-650 or ASME Sec.VIII?

Atmospheric I would stil use asme sec 8 with allowances for a little pressure, say 5 to 15 psi,
you will have to consider all the parammeters as loads and corrossion, seismics and more. even if not stamped.
ERomero

RE: Api-650 or ASME Sec.VIII?

carletes,

API-620 is commonly used for tanks operating between 2.5 and 15 psig as well as tanks that operate out of the temperature range of API-650. API-620 is used for flat bottomed tanks as well as tanks with dished heads.

Tanks designed, fabricated, inspected but not stamped to ASME VIII are commonly specified for use in the process chemical industry for pressures from 2.5 to 15 psig. These tanks are only marginally more expensive than other alternatives WHEN NOT CODE STAMPED.... This type of tank typcally has two dished heads and is commonly supported on two saddles (horizontal axis) or multiple legs (vertical axis.....

What are you storing and what is the vapor pressure at 110F ?

Come back !!???


MJC

"There comes a time in the affairs of man when he must take the bull by the tail and face the situation." W.C. Fields  

RE: Api-650 or ASME Sec.VIII?

For conventional carbon steel, a flat bottom tank per ASME Section VIII is competitive in price versus an API standard tank until you get above approx. 20 ft Diameter x 20 T-T; then as it gets larger , the API tank will continue to get cheaper.  

The more you learn, the less you are certain of.

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