×
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

RT4 for hydrogen?

RT4 for hydrogen?

RT4 for hydrogen?

(OP)
I saw a pressure vessel used to conserve hydrogen (generated by a small electrolysis h2 generator) for an industrial process (to supply H2 for a H2 cooled generator in power plant). The U plate says MAWP 300psi@200F/ MDMT300psi@-20F, "FOR HYDROGEN" and RT4. The operation pressure is much lower than the MAWP.
Is it OK to use a pressure vessel(ASME VIII DIv 1) for hydrogen with RT4? I thought it should be highly inspected with RT1.

RE: RT4 for hydrogen?

RT4 is a catch-all for anything not explicitly covered by RT1/RT2/RT3. You have to look through the U-1 form and likely the calculations for clarification on exactly what was done. They may have even done more x-ray inspection than is required by RT1 (or much less...).

RE: RT4 for hydrogen?

Quote (DavidCR )

Is it OK to use a pressure vessel(ASME VIII DIv 1) for hydrogen with RT4? I thought it should be highly inspected with RT1.

I don't recall that the Code requires any particular degree of RT for H2 service.

Regards,

Mike

The problem with sloppy work is that the supply FAR EXCEEDS the demand

RE: RT4 for hydrogen?

The Code is generally agnostic with respect to service. Personally, I would not purchase a vessel in hydrogen service (including a high partial pressure of hydrogen) that had many design details otherwise permitted by Div 1. It's the responsibility of the owner/purchaser to ensure that the vessel being purchased it suitable for the service.

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