×
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

Code boundary issue
2

Code boundary issue

Code boundary issue

(OP)
Gentelmen,

I'm back with another issue,  We are building a HRSG type boiler.  My drawings supplied by the designer call the Interconnecting pipe, which connect the HP, IP, LP, drums to the internal modules as Section 1 Boiler Proper.  My AI is calling this same piping Section 1/B31.1 wich totally changes the NDT required.  The design company published a weld schedule, in which all required NDT is listed. My list matched this exactly, until the AI made his interpatation.  What would be the best course of action to argue this point with my AI.  I built another HRSG, just down the road from here using a AI from the same office, his interpatation matched the designers. Can the AI change the designers boundaries.

RE: Code boundary issue

Your AI is correct. Boiler piping is under administrative Authority of Section I. However, the technical requirements of B31.1 apply.

RE: Code boundary issue

fatcobra,
Back in the 90's I was the AI on a number of field erected, modular type HRSG units so I understand your confusion.  See Figure PG-58.3.1 of Section I, metengr and your AI are correct.
Regards,
RLS

RE: Code boundary issue

(OP)
Guys this piping goes directly from the modules Which is boiler internal piping, to the Drums which is also Boiler Internal piping, how is it possible to have a two foot code break between the two.

RE: Code boundary issue

(OP)
Also, how could one of the leading designers in HRSG type boiler's, whom have built these on the same design all over the united states, have been incorrect in every one they have built in the past.  These are cookie cutters the same rules apply to every one.  HRSG type boilers are not the same as convential boilers, and there fore boundary specifications have to be different.  If you look at PG 58.3.1 everthing classified as BEP is leaving the boiler. The piping I am discussing goes directly from the HP drum into the HP evaporator, there is no valve of any type.

RE: Code boundary issue

fatcobra,
Relax, all is well. Read the Preamble to Section I, fourth, fifth, and seventh paragraphs.
Regards,
RLS

RE: Code boundary issue

fatcobra;
Please read the Preamble in Section I. This is the first thing one must do to completely understand what is considered boiler proper and individual components that are connected together.

RE: Code boundary issue

(OP)
I read this last night, but as I am fairly new to the interpatation game, I wanted to see if i was reading it correctly.  Thanks guys.

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