×
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

Tank Insulation: Shell vs. Shell+Roof

Tank Insulation: Shell vs. Shell+Roof

Tank Insulation: Shell vs. Shell+Roof

(OP)
Hi,
For insulating big tanks in oil industry, what have you  seen: Just Shell insulated or  Shell and Roof both insulated?
I'm here in Canada.

Thanks for all replies

RE: Tank Insulation: Shell vs. Shell+Roof

It will usually be economic to insulate the roof. The ones I see are insulated. Special care is needed for the roof insulation design to avoid corrosion under the insulation.

HAZOP at www.curryhydrocarbons.ca

RE: Tank Insulation: Shell vs. Shell+Roof

The heat transfer coefficient in the vapor space is lower than the liquid, so the roof is less economical; however, I have seen it done even down here in Louisiana!  

I have done the calculations but don't have them handy.  If it's worth doing anywhere I'm sure Canada would be a place where it's worthwhile!  

RE: Tank Insulation: Shell vs. Shell+Roof


Thermal insulation of storage tanks is based in the stored product characteristics and  typical weather conditions of storage area. There are tanks Just Shell insulated and tanks  Shell and Roof both insulated.

Luis

RE: Tank Insulation: Shell vs. Shell+Roof

Pl. note the following:
1. Uninsulated hot tanks may have much more under-roof corrosion due to condensation of hot vapors/moisture.
2. If you are heating the tank to maintain the liquid temperature, it will be better to insulate the roof to reduce the heating steam (A cost/benefit analysis may show you the truth).
3.If the shell insulation is only for personal protection, you dont need to insulate the tank.
4.Emergency venting sizing will be affected by the decision to do away with roof insulation.
 Finally tell us what is the service of the tank to a get a better answer!

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