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

REMOVING GAS DISTRIBUTION PIPE

REMOVING GAS DISTRIBUTION PIPE

(OP)
A contractor is removing old natural gas distribution pipe(8" steel) from a roadway. Is this pipe considered hazardous waste and need to be sent to the landfill or is it good to go to metal recycling yard? The pipe still smells like natural gas.

RE: REMOVING GAS DISTRIBUTION PIPE

Natural gas is odorless.

What you are probably smelling is methyl mercaptan or ethyl mercaptan, added in tiny quantities to the distribution system to make gas leaks easily detectable.

From bioreference.net:

Quote:

It can react with or be adsorbed metallic pipe materials, particularly when corroded, and will bind to soil particles. Explosions have occurred where underground gas leaks went unnoticed because the mercaptan was filtered out by the soil.

... which doesn't address the issue of whether a pipe with adsorbed mercaptan requires special care.

Mike Halloran
Pembroke Pines, FL, USA

RE: REMOVING GAS DISTRIBUTION PIPE

This suggests that you could possibly get rid of the mercaptan with H2O2:

http://www.h2o2.com/industrial/applications.aspx?p...

It doesn't address the issue of whether you should do so, or if you are required to do so.

Mike Halloran
Pembroke Pines, FL, USA

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