×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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.

Students Click Here

NACE Standard for perfect drain means after hydrostatic testing?

NACE Standard for perfect drain means after hydrostatic testing?

NACE Standard for perfect drain means after hydrostatic testing?

(OP)
I'm looking for the NACE Standard for hydrotesting.

Is there a perfect drain means for preventing contamination of Cl? (Or any recommended means for drain?)

We had a GHT Reactor which is cladded with S.S. 321.

We should do a hydrostatic test with it.

Unfortunately it's cladded with S.S. 321, there's a possibility that Cl SCC occurs.

Here are the points I'm worried about...

  1. Is there any special means to prevent contamination of hydrotesting media (we use C.C.C.? How can we fully drain or dry it? Just an air blowing and purge for long time is an answer?

  2. Have you ever experienced hydrostatic testing for an equipment which is capable of occurring Cl SCC? How do you drain totally? Do you have any special technical standard for it?

Thanks for your kindness.

Have a nice day~!

RE: NACE Standard for perfect drain means after hydrostatic testing?

RE: NACE Standard for perfect drain means after hydrostatic testing?

If your water has less than 150 ppm don't worry about a thing, just air dry.  If you have higher chloride content and can enter the vessel, you can hand dry with no ill effects.  The more internals with crevices in the vessel, the more you need to worry about ClSCC from hydrotest water.  

There are also additives for hydrotest water that contain very high chlorides to help prevent, or at least greatly minimize the possibility of chloride cracking.  Just do some research

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! Already a Member? Login


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

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