×
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!
  • 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

Jobs

Cryogenics

Cryogenics

Cryogenics

(OP)
In low temp liquids, and the welding of inner vessel in Dewars.  Does the liquid saturate the weld and pass over to the vacuum space?  Is the use of Barium and or Barium compounds getters and Liquid Oxygen considered hazardous and explosive?

RE: Cryogenics

The liquid does not transfer to the vacuume space in a properly welded tank. However if you have bad welds (porosity) then you can have problems. Proper Quality control and welding systems design for welding in Dewars in very important.

I do not know about your question regarding Barium and Barium getters. I would need more information regarding your application to assess the hazard. More information would be helpful to allow understanding of concentration and form of Barium.

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