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!

*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.

Jobs

Reuse Pressure Vessel as Storage Tank

Reuse Pressure Vessel as Storage Tank

(OP)
A client is wanting to reuse an existing vertical pressure vessel as a atmospheric storage tank. What are some consideration that needs to be looked at for something like this? The product is COS Solvent and tank will have a nitrogen blanket. Thank you.

RE: Reuse Pressure Vessel as Storage Tank

Similar to the tank design, the design should be considered to protect the vessel, such as a proper pressure and vacuum protection, adequate chemical spill containment, etc.

RE: Reuse Pressure Vessel as Storage Tank

To add to mk3223 with regard to spill containment, a high liquid level alarm is advisable as well product labeling, hazard identification consistent with hazcom, and instructions for product loading, unloading, etc... Make an internal inspection, if possible, to determine if it free of debris, has no serious pits, no scale etc... external piping should be in good condition, properly supported and any welded attachment structurally sound.

RE: Reuse Pressure Vessel as Storage Tank

(OP)
Thank you both for the replies.

RE: Reuse Pressure Vessel as Storage Tank

other than material and corrosion issues, not a lot IMO. Clearly you will have a lot more metal than you need and the nozzles might be in the wrong locations for say emptying the tank or being able to monitor liquid level, but depends on what the vessel was used for and now.

E.g. outlet nozzle on a PV is often off the bottom of the vessel so if you've got any debris you will get it in the outlet when using it as a tank.

On the plus side you won't have to worry much about pressure or vacuum collapse...

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

RE: Reuse Pressure Vessel as Storage Tank

Just thinking, anybody wonder what impact the re-purposing will have on the vessel nameplates?

-Will your changes affect the rated design pressure (e.g. not greater than 15 psi?)

-What about contacting the manufacturer and informing them of changes to their pressure vessel. Can you get a revised vessel nameplate re-rating the design pressure to atmospheric storage tank pressures?


Just thinking....slow day...

Jeff
Pipe Stress Analysis Engineer
www.xceed-eng.com

RE: Reuse Pressure Vessel as Storage Tank

Quote:

what impact the re-purposing will have on the vessel nameplates?
It's the engineer's decision. But, it isn't required to re-rate the vessel to the lower pressure just because of the operation condition changed.
Yes, the vessel can be re-rated with a new name tag, if needed.

RE: Reuse Pressure Vessel as Storage Tank

(OP)
Thanks for all the input. The operating pressure will be much lower than what it is rated for. And mk3223 you answered my question that i was going to ask about the nameplate thumbsup.

RE: Reuse Pressure Vessel as Storage Tank

Why rerate, your vessel has a higher designpressure?

RE: Reuse Pressure Vessel as Storage Tank

I would leave the original nameplate in place so that in the future when personnel changes as time goes and there is no one else from the time the change took place, there will be inquiries about the rating of the tank.

RE: Reuse Pressure Vessel as Storage Tank

(OP)
Re-rating the vessel is due to thinning of the vessel shell and heads. Going to keep it an ASME vessel but no require a code stamp.

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


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