×
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

What is back tension during the umbilical installation and service?

What is back tension during the umbilical installation and service?

What is back tension during the umbilical installation and service?

(OP)
Guys, I was involved a project on the umbilcal analysis. I was confused about the 'back tension' . Anyone have information about this?  

3x

RE: What is back tension during the umbilical installation and service?

Backtension is usually described as the tension required to hold the umbilical during the lay operation.   

RE: What is back tension during the umbilical installation and service?

If your umbilical is stored on a reel and is then being laid by a tensioner, you have 2 tensions;

1) the tension on the seaward side of the tensioner = the lay tension
2) a usually lower tension between the reel and the tensioner = the back tension

RE: What is back tension during the umbilical installation and service?

(OP)
Thanks for the reply. Seems the back tension was used to define the installation load on the umbilical created by the tensioner.
My further question was that after the umbilical was laid on the seabed, some of them are taut or just 'sit' on the seabed without any tension?  I heard it might be taut. When it was taut, there should be a tension in the umbilical, how to call this force and how big it was, how to detemine?
thanks again.
 

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