×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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.

Students Click Here

pipeline preservation

pipeline preservation

pipeline preservation

(OP)
We have a operative crude oil pipeline of lenght 10 KM. We need to isolate from th emain system and prserve it for a long period.What sort of presrvation we use and which one is better. We believe that it is better to prserve by gasoil, or diesel oil to keep tha status of such for along period and without any more major corrosion. Kindly Advice
Nitrogen is good but at teh same time their will be some corrosion will take place, because nitrogen only will reduce the oxygen content on the pipeline , at the same time we have to keep the pipeline under pressure of 1.5 bar and we should continuesly check the pressure along the pipeline
Kinldy we need your advice to presrve such pipeline with above conditions

RE: pipeline preservation

How long?

Dry N2 would be the best option. The pipeline can be filled at a rate which will displace all other gas to be pushed out ahead of the N2. Separation of air and N2 can be maintained if necessary during filling and drying procedures by the use of spheres or sealing pigs.

If your diesel contains water, the water will collect at the bottom of the pipe and at low spots along the pipeline. Diesel may also contain other elements, such as sulfur. Those can introduce chemical and microbe induced corrosion, so it is not the best option. I would not use diesel if you intend to preserve the pipeline for more than 1yr. If you do, try to settle or filter out any water and other deleterious materials that may be contained in that diesel.

RE: pipeline preservation

I agree - Remove the crude and dry and get it as dry as you can then blow some N2 and then pack it.

Make sure you put warning signs and positively isolate the pipe to prevent nitrogen leaking out and creating danger from asphyxiation.

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

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! Already a Member? Login


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

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