×
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

ASME VIII safety valves in an ASME I constructed power boiler

ASME VIII safety valves in an ASME I constructed power boiler

ASME VIII safety valves in an ASME I constructed power boiler

(OP)
Dear all,

Can we install ASME VIII safety valves in an ASME I constructed power boiler?

I'm commissioning an ASME I power boiler and our safety valve manufacturer have difficulty in achieving re-seat 4% below set pressure. The best we achieve so far is 7% below set pressure, and now the debate is that the safety valves are at least meeting ASME VIII requirement, hence seeking a compromise to accept the valves. Just fyi, the 7% below set pressure is still above our max operating temp.

Thanks for your help!

RE: ASME VIII safety valves in an ASME I constructed power boiler

How could the manufacturer have difficulties achieving 4% blowdown? It's either an ASME I certified safety valve or it's not. If you asked for an ASME I certified valve and the manufacturer delivered an ASME VIII I would expect them to replace it. What kind of valve are we talking about here, does it meet the 3% criteria (certified capacity at 3% above set pressure)?

RE: ASME VIII safety valves in an ASME I constructed power boiler

(OP)
It meets the 3% above set pressure criteria with ease. But yes, we're demanding the manufacturer to replace the safety valves to replace since it doesn't meet our requirement. I just wanted to double check if there is such thing as ASME VIII PSV in an ASME I boiler, because I have not heard of it before. Thanks!

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