Smart questions
Smart answers
Smart people
Join Eng-Tips Forums
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Member Login




Remember Me
Forgot Password?
Join Us!

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips now!
  • 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!

Join Eng-Tips
*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 from Indeed

Link To This Forum!

Partner Button
Add Stickiness To Your Site By Linking To This Professionally Managed Technical Forum.
Just copy and paste the
code below into your site.

gilbert123 (Mechanical) (OP)
22 Jul 02 23:48
Can someone please tell me what type of piping is used for nitrogen gas and where I could find specs for nitrogen gas piping. Thanks all
ralphsare (Structural)
23 Jul 02 8:18
as long as the temp is above minus 29C, you'll be ok with carbon steel.
TD2K (Chemical)
23 Jul 02 9:18
You don't give any idea what type of pressures or temperatures you are talking about.  If this is cryogenic temperatures or very high pressure, the following won't apply.

Nitrogen is commonly used within refineries as a purge gas to remove hydrocarbons from equipment before it is turned over to maintenance and to remove air from equipment before returning it to service.  Steam can also be used to hydrocarbon free equipment.

The nitrogen piping specifications I've seen have been just plain carbon steel good for nitrogen at ambient temperatures and up to a few hundred psig.  Essentially, they've been the same as our specs for light, sweet hydrocarbons.  If you have a compressed air piping spec (not instrument air as this typically calls for galvanized piping), that should work since air is already 79% nitrogen by volume.
slowlearner (Chemical)
23 Jul 02 10:43
Nitrogen produce by Air Saparation units regardless of temp. and pressure is using Carbon steel piping.

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!

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