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Development of Design Rules for Nozzles in Pressure Vessels for the ASME B&PV Code, Section VIII, Division 2

[+] Author Affiliations
Zhenning Cao, David A. Osage, J. C. Sowinski

The Equity Engineering Group, Inc., Shaker Heights, OH

Les Bildy

Codeware, Inc., Sarasota, FL

Paper No. PVP2011-57356, pp. 311-320; 10 pages
  • ASME 2011 Pressure Vessels and Piping Conference
  • Volume 3: Design and Analysis
  • Baltimore, Maryland, USA, July 17–21, 2011
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 978-0-7918-4453-3
  • Copyright © 2011 by ASME


The theory behind the pressure-area method that is incorporated in the ASME B&PV Code, Section VIII-2 is presented in this paper. Background and insight to the nozzle rules of ASME B&PV Code, Section VIII, Division 2, Part 4, paragraph 4.5 are also provided. Recommendations for modifying the current nozzles rules, those published in ASME B&PV Code, Section VIII, Division 2, 2010 Edition, is given based on continuing research and development efforts. A comparison between experimental results, results derived from detailed finite element analysis (FEA), the rules prior to the VIII-2 Rewrite (2004 Edition), and the rules in VIII-2 are provided in terms of a design margin and permissible maximum allowable working pressure (MAWP) computed with the design rules. A complete description of the theory including a commentary and comparison to experimental results is provided in WRC529 [1].

Copyright © 2011 by ASME



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