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Flange Joint Assembly Considerations for Critical Service Connections

[+] Author Affiliations
Rod T. Mueller

Carmagen Engineering, Inc., Rockaway, NJ

Paper No. PVP2006-ICPVT-11-93093, pp. 111-123; 13 pages
  • ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference
  • Volume 2: Computer Technology
  • Vancouver, BC, Canada, July 23–27, 2006
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4753-5 | eISBN: 0-7918-3782-3
  • Copyright © 2006 by ASME


Flange joints, especially in high temperature critical services, continue to represent one of process industry’s more significant challenges in achieving reliable leak-tight piping. The paper will provide guidelines to help the user categorize critical services where flange joints warrant particular attention in their assembly. Unlike welded piping joints, flange joints do not have specific assembly qualification procedures recognized by current piping or PV Codes. The paper presents an approach to flange assembly procedures and quality control to improve the reliability of critical service bolted joints. The importance of effective assembly crew training and qualifications will also be emphasized. While the techniques have evolved with petrochemical service applications, they would be of interest to other process industries where flange leakage is a key concern.

Copyright © 2006 by ASME



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