×
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

Section 1 Bolting

Section 1 Bolting

Section 1 Bolting

(OP)
Where are allowable bolt stress values found for Section 1 equipment?

Table 3 of Section II does not appear to include Section 1 equip.

RE: Section 1 Bolting

Here is my take on your specific question - the fabrication of pressure retaining items for boilers typically deals with welded construction, with only riveted construction prior to the 1940's (approximate). Bolting used in flanges or for internal hardware in boiler drums, etc would be furnished under misc items that the design engineer would specify. Flanges for use on boiler external piping and hardware would be supplied under ASME B16.5 with bolting requirements under Power Piping Code, ASME B31.1.

RE: Section 1 Bolting

(OP)
I am attempting a boiler repair requiring bolts holding together a category H fitting designed to Section I.

RE: Section 1 Bolting

What is the service temperature of the bolts that are securing the fitting?

RE: Section 1 Bolting

Whenever I hear questions regarding Section I Boilers and Bolting I can't help remembering the USS Iwo Jima accident in October 1990 regarding incorrect fasteners (nuts) on bolting.
Here is link to an article that was reprinted with permission of The National Board of Boiler and Pressure Vessel Inspectors BULLETIN, [Summer 1997).

http://www.esmagazine.com/CDA/Archives/61fb42aefcca8010VgnVCM100000f932a8c0____

RE: Section 1 Bolting

(OP)
725 psi/800 F

RE: Section 1 Bolting

ASME SA 193 Grade B16 studs should be acceptable.

RE: Section 1 Bolting

(OP)
B7/B16 will do fine under section 8, but that is not the question here.

RE: Section 1 Bolting

rickylee

Yor answer will not be "cut and dried" See the "Introduction" in SecI. The answer metengr has given you would be acceptable in my book.

RE: Section 1 Bolting

rickylee,
Does this interpretation help explain what deanc and metengr are trying to say? Just remember that the tables in PG-23.1 were moved to Section II Part D


Interpretation:    I-77-14
Subject:    Section I, Use of SA-193, SA-194, and SA-479
Date Issued:    April 25, 1977
File Number:    BC-75-417

Question: May SA-193 Bolting, SA-194 Nuts, and SA-479 Bars and Shapes be used in Section I construction? They are listed in Section II but do not appear in Section I paragraphs concerning allowable materials?

Reply: Bolting and nuts for bolts are not provided for specifically in Section I; i.e., they are not included in the stress Table PG-23.1. SA-193 Bolting and SA-194 Nuts meet the intent of Section I wherein it is provided in the Preamble that where complete details are not given, it is intended that the Manufacturer, subject to the approval of the Authorized Inspector, shall provide details of design and construction which will be as safe as otherwise provided by the rules in the Code.

RE: Section 1 Bolting

(OP)
Thanks to all.

Rick

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