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!
  • Students Click Here

*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


n2 Blanket

n2 Blanket

n2 Blanket

We are planning to load Hopper Railcars with Bisphenol A and adding n2 nitrogen as a blanket. Any ideas on how? Our laoding method is from super sacks to a agriculture tipe conveyor tube to top of railcar manhole. Suggestion on applying this idea? This is all new to us.

RE: n2 Blanket

We have used N2 as a blanketing agent in some applications of our business by connecting flexible hoses between pressure regulators, mounted on high pressure N2 cylinders, and receiving containers fitted with threaded connectors. Since our containers were for the storage of various vehicle fuels, to determine acceptability of the inert gas blanket, we tested for the displaced concentration of flammable vapors released thru the tank vents. In larger tanks of 1000 gallon and more, we used dry ice as a blanketing means and again tested the vented vapors. For hoses we made our own by purchasing reels of welding N2 hoses to which we crimped on connectors.

Since I have never dealt with Bisphenol A, I have no idea as to the reason for blanketing this product stored in RR cars unless this safety procedure is mandated, therefore, there should be some requirements about the needed N@ concentration which obviously would have to be tested at the vents. It stands for reason that the vents need to be as remotely located from the point source of the N2 gas and that there is no contamination issue between hoses and product. There should be no need to lubricate the connectors also.

RE: n2 Blanket

I should also mentioned that if your operation is a continual one, you may want to check into bulk storage of N2, however, discuss with the supplier the requirements associated with this type of set up. Our operation had to be flexible since it was sporadic and conducted in different job sites.

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!


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