×
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

Inspection Plugs on hot insulation

Inspection Plugs on hot insulation

Inspection Plugs on hot insulation

(OP)
Hi All,

Our contractor is proposing to install inspection plugs on hot insulated piping that can be removed for inspection of CUI. I understand the theory that they replicate the conditions of the pipe and can easily be removed for inspection, but I'm more concerned with how they perform in practice. My concern is that given the unpredictable nature of CUI, inspecting these very small plug sections wont actually provide any more confidence to the integrity of the piping and we'll end up having to remove insulation anyway during inspection campaigns. What's others experience here, is installing inspection plugs a best practice that actually helps with monitoring for CUI, or are they a 'well meaning but useless' endeavor?

RE: Inspection Plugs on hot insulation

The inspection points themselves can become areas of weakness. Prob need to be at the bottom of the pipe.

I guess they could allow access for long range UT between welds and flanges, but yes. it's like any spot inspection - only gives you a small chance of finding anything.

How many and what separation / size?

what type of insulation?

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

RE: Inspection Plugs on hot insulation

It’s down to the owner to define the inspection strategy, not the insulation contractor. API, DNV, EFC, and a few others have documents that help.

Steve Jones
Corrosion Management Consultant

www.linkedin.com/in/drstevejones

All answers are personal opinions only and are in no way connected with any employer.

RE: Inspection Plugs on hot insulation

What's the operating temperature of the pipe? Once you hit a certain temp, CUI isn't relevant.

RE: Inspection Plugs on hot insulation

Chose points in pipe where corrosion is more susceptible to occour such as lower points of condensation, then proceed, and choose your plugs on insulation according the API of CUI.(API Recommended Practice 583).

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



News


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