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


How to specify the maximum operatio

How to specify the maximum operatio

How to specify the maximum operatio

How to specify the maximum operational level for fuel storage tanks ???

RE: How to specify the maximum operatio

API 2350

RE: How to specify the maximum operatio

Look at API 650 figure 5.4

You have a "design liquid level" (DLL) - basically the bottom of your overflow pipe / slot in the tank.

If you have a floating roof, then this is limited by the roof depth to avoid any part of the floating roof going beyond the top of the tank wall.

Then there is a volume or level distance from DLL to normal max fill level (NFL).

This is decided by each operator / designer in turn.

Often the requirement is that at maximum fill rate there is at least 15 minutes from when liquid goes past the NFL before it exceeds the DLL. This allows sufficient time for the operator to do something BEFORE the tank over flows.

For very large tanks this can sometimes also be expressed as a distance which allows the tank level gages to recognize the difference from one level to the next (e.g. 150mm between normal, high level and high high level).

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

RE: How to specify the maximum operatio

Sorry - 2350 is overflow prevention, not operational limits, but is probably still good reading material for you.

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!


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