×
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

Refinery Storage Tank Thermowells Immersion Lengths

Refinery Storage Tank Thermowells Immersion Lengths

Refinery Storage Tank Thermowells Immersion Lengths

(OP)
Gents,
I'm looking for an industry standard/guide for immersion lengths of thermowells directly mounted in storage tanks. We have tanks from 12ft to 57ft in diameter. Only info I've found is an old Shell standard for (process ?) 'vessels', stating an immersion length of 18 inches. Thanks.

RE: Refinery Storage Tank Thermowells Immersion Lengths

Try this link:

thread698-186164: Thermowells

______________________________________________________________________________
This is normally the space where people post something insightful.

RE: Refinery Storage Tank Thermowells Immersion Lengths

(OP)
Thanks.
Senility is a wonderful thing.
I even put my 10cents work in that already discussed topic !!

RE: Refinery Storage Tank Thermowells Immersion Lengths

(OP)
I found the details in the API publication 'Manual of Petroleum Measurement Standards, Chapter 7 - Temperature Determination'. API recommend a minimum projection of 36" into the tank (from the side) if the rtd/thermocouple inside the well is being used for custody transfer. If it's a local bi-metallic dial thermometer, recommended minimum is 12".
Point to note though, the publication has a lot of detail on temperature monitoring especially in 'custody transfer service' where acuracy plays a big part with respect to liquid volume and expansion due to heat. Well worth the read !

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