Full Content is available to subscribers

Subscribe/Learn More  >

Flange Assembly Bolt Load Selection Based on Leak Before Break Analysis

[+] Author Affiliations
Warren Brown

The Equity Engineering Group, Shaker Heights, OH

Paper No. PVP2006-ICPVT-11-93075, pp. 127-135; 9 pages
  • ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference
  • Volume 3: Design and Analysis
  • Vancouver, BC, Canada, July 23–27, 2006
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4754-3 | eISBN: 0-7918-3782-3
  • Copyright © 2006 by ASME


The selection of an appropriate assembly bolt load has an upper bound limited by an actual, or perceived, maximum allowable bolt load for the joint. Often, this limit may be selected based on examination of stress levels in the flanges. Present guidelines for selection of the appropriate bolt assembly stress (ASME PCC-1, [1]) use higher bolt loads than the allowable stress levels specified in the design code (ASME VIII, Div. 1, [2]), without justification of why this is an acceptable practice. The basis is, appropriately, the lack of mechanical failure of flanges within industry when bolt loads of that magnitude are employed. Since the basis is industry practice, it is difficult for the end-user to know when it is possible to extend the limits. This is particularly important in cases of joints that are problematic to seal, which may require assembly bolt loads in excess of those found in ASME PCC-1. This paper develops a complete technical basis for why it is acceptable to load flanges beyond the limits of ASME PCC-1 without risk of mechanical failure of the joint. The limits of applicability of such a bolt load selection philosophy are also defined. The paper discusses the practical application of high bolt loads in achieving leak-free joint operation.

Copyright © 2006 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In