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Recent Design Approaches of Large Bore Piping Exeeding 100 of Ratio D/T

[+] Author Affiliations
Toshio Mabuchi

Chiyoda Corporation, Yokohama, Japan

Masataka Shinohara

Chiyoda Advanced Solutions Corporation, Yokohama, Japan

Paper No. PVP2004-2609, pp. 149-155; 7 pages
  • ASME/JSME 2004 Pressure Vessels and Piping Conference
  • Design and Analysis of Pressure Vessels, Heat Exchangers and Piping Components
  • San Diego, California, USA, July 25–29, 2004
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4672-5
  • Copyright © 2004 by ASME


Integration and scale up of utility facilities tend to use large bore pipes which are thinner than ever to reach an optimum design. The size range of pipe from 50” to 120” in diameter and ratio of diameter to thickness (D/t) ranges from 100 to 215 are chosen for the optimum design. These size ranges are outside the scope of conventional standards such as ASME piping codes and pipe fitting codes. They are treated in a limited manner in the design guide or manual such as provided by AWWA[1]. However these conventional codes shall be paid much attention when extrapolating the design methods beyond the limitation of conventional methods especially for large bore piping. Also as the detailed analysis methods assure reliable operation, the current design method by using Finite Element Analysis (FEA) has been proposed. It is applied to deal with piping design for the large bore piping in recent overseas projects, such as for the layout of piping, stress concentration on pipe fittings, optimum saddle configurations, and special heavy duty anchor.

Copyright © 2004 by ASME
Topics: Design , Pipes



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